Science & Technology

Organizers of the 3rd annual Genome Engineering: The CRISPR-Cas Revolution event, from left, Maria Jasin, Jonathan Weissman, Jennifer Doudna and Stanley Qi. Photo courtesy of CSHL

By Daniel Dunaief

One day, the tool 375 people from 29 countries came to discuss in late July at Cold Spring Harbor Laboratory may help eradicate malaria, develop treatments for cancer and help understand the role various proteins play in turning on and off genes.

Eager to interact with colleagues about the technical advances and challenges, medical applications and model organisms, the participants in Cold Spring Harbor Laboratory’s third meeting on the CRISPR-Cas9 gene editing system filled the seats at Grace Auditorium.

Jason Sheltzer. Photo from CSHL

“It’s amazing all the ways that people are pushing the envelope with CRISPR-Cas9 technology,” said Jason Sheltzer, an independent fellow from Cold Spring Harbor Laboratory who presented his research on a breast cancer treatment.

The technology comes from a close study of the battle between bacteria and viruses. Constantly under assault from viruses bent on commandeering their genetic machinery, bacteria figured out a way of developing a memory of viruses, sending out enzymes that recognize and destroy familiar invaders.

By tapping into this evolutionary machinery, scientists have found that this system not only recognizes genes but can also be used to slice out and replace an errant code.

“This is a rapidly evolving field and we continue to see new research such as how Cas1 and Cas2 recognize their target, which opens the door for modification of the proteins themselves, and the recent discovery of anti-CRISPR proteins that decrease off-target effects by as much as a factor of four,” explained Jennifer Doudna, professor of chemistry and molecular and cell biology at the University of California at Berkeley and a meeting organizer for the last three years, in an email.

Austin Burt, a professor of evolutionary genetics at the Imperial College in London, has been working on ways to alter the genes of malaria-carrying mosquitoes, which cause over 430,000 deaths each year, primarily in Africa.

“To wipe out malaria would be a huge deal,” Bruce Conklin, a professor and senior investigator at the Gladstone Institute of Cardiovascular Disease at the University of California in San Francisco and a presenter at the conference, said in an interview. “It’s killed millions of people.”

Carolyn Brokowski. Photo by Eugene Brokowski

This approach is a part of an international effort called Target Malaria, which received support from the Bill and Melinda Gates Foundation.

To be sure, this effort needs considerable testing before scientists bring it to the field. “It is a promising approach but we must be mindful of the unintended consequences of altering species and impacting ecosystems,” Doudna cautioned.

In an email, Burt suggested that deploying CRISPR in mosquitoes across a country was “at least 10 years” away.

CSHL’s Sheltzer, meanwhile, used CRISPR to show that a drug treatment for breast cancer isn’t working as scientists had thought. Researchers believed a drug that inhibited the function of a protein called maternal embryonic leucine zipper kinase, or MELK, was halting the spread of cancer. When Sheltzer knocked out the gene for MELK, however, he discovered that breast cancer continued to grow or divide. While this doesn’t invalidate a drug that may be effective in halting cancer, it suggests that the mechanism researchers believed was involved was inaccurate.

Researchers recognize an array of unanswered questions. “It’s premature to tell just how predictable genome modification might be at certain levels in development and in certain kinds of diseases,” said Carolyn Brokowski, a bioethicist who will begin a position as research associate in the Emergency Medicine Department at the Yale School of Medicine next week. “In many cases, there is considerable uncertainty about the causal relationship between gene expression and modification.”

Brokowski suggested that policy makers need to appreciate the “serious reasons to consider limitations on nontherapeutic uses for CRISPR.”

Like so many other technologies, CRISPR presents opportunities to benefit mankind and to cause destruction. “We can’t be blind to the conditions in which we live,” said Brokowski.

Indeed, Doudna recently was one of seven recipients of a $65 million Defense Advanced Research Projects Agency award to improve the safety and accuracy of gene editing.

The funding, which is for $65 million over four years, supports a greater understanding of how gene editing technologies work and monitors health and security concerns for their intentional or accidental misuse. Doudna, who is credited with co-creating the CRISPR-Cas9 system with Emmanuelle Charpentier a scientific member and director of the Max Planck Institute for Infection Biology in Berlin, will explore safe gene editing tools to use in animal models and will specifically target Zika and Ebola viruses.

“Like most misunderstood disruptive technologies, CRISPR outpaced the necessary policy and regulatory discussions,” Doudna explained. The scientific community, however, “continued to advance the technology in a transparent manner, helping to build public awareness, trust and dialogue. As a result, CRISPR is becoming a mainstream topic and the public understanding that it can be a beneficial tool to help solve some of our most important challenges continues to grow.”

Visitors enjoyed a wine and cheese party on the Airslie lawn during the event. Photo from CSHL

Cold Spring Harbor Laboratory plans to host its fourth CRISPR meeting next August, when many of the same scientists hope to return. “It’s great that you can see how the field and scientific community as a whole is evolving,” Sheltzer said.

Doudna appreciates the history of Cold Spring Harbor Laboratory, including her own experiences. As a graduate student in 1987, Doudna came across an unassuming woman walking the campus in a tee-shirt: Nobel Prize winner Barbara McClintock. “I thought, ‘Oh my gosh, this is someone I revere,” Doudna recalled. “That’s what life is like” at the lab.

Brokowski also plans to attend the conference next year. “I’m very interested in learning about all the promises CRISPR will offer,” she said. She is curious to see “whether there might be more discussion about ethical and regulatory aspects of this technology.”

Brookhaven Town Supervisor Ed Romaine and Councilman Dan Panico, on left, with the new food scrap composters. Photo from Town of Brookhaven

As far as the Town of Brookhaven is concerned, going green is not just a casual practice — it’s a moral obligation to ensure Long Island’s future.

In the last few months, Supervisor Ed Romaine (R) and members of the town board have launched a series of environmentally friendly initiatives and continued ongoing efforts that encourage local residents to
reduce their carbon footprints and preserve the serenity of their surroundings.

“Whenever there are ways to benefit the environment, I’m 100 percent involved [and] I’m blessed by an extremely supportive town board,” Romaine said, highlighting an especially strong partnership with Councilwoman Jane Bonner (C-Rocky Point). “I don’t want to say Jane is my environmental soulmate, but she and I are on the exact same page. She is one of my cheerleaders in every manner, shape or form.”

Other environmental actions taken by Brookhaven:

– A 127-acre solar farm called Shoreham Solar Commons will be constructed on the recently closed Tallgrass Golf Course.

– The extension of the Pine Barrens to include 800 acres of national property around the former Shoreham nuclear plant will go forward upon Gov. Andrew Cuomo’s (D) signed authorization.

A multiyear project to convert all 40,000 of Brookhaven’s streetlights to LED bulbs has begun with 5,000 already converted.

– Through a partnership with U.S Rep. Lee Zeldin (R-Shirley) and the Federal Emergency Management Agency, the town has secured funding to fix stormwater infrastructures along the North Shore, from Miller Place to Shoreham.

– A center at Ceder Beach in Mount Sinai  has been established to grow millions of oysters and sea clams that filter and clean the water.

In May, Bonner held her fifth bi-annual Go Green event at the Rose Caracappa Senior Center in Mount Sinai. It’s the town’s biggest recycling event where residents can dispose of unwanted medication and prescriptions and recycle old TVs and computers, as well as paper. The e-waste drive gathered 15,000 pounds of electronic waste and shredded 13,580 pounds of paper products and 26 boxes of unwanted pharmaceutical drugs, according to the town.

The councilwoman also hosted a Homeowner’s Guide to Energy Efficiency forum at the center later in the month, educating residents on how to get a free energy audit, affordable home energy improvements and save $1,000 a year on home energy bills. Through this effort, less fossil fuels are used to heat and light homes.

“We take it very seriously,” Bonner said of the town’s green initiatives. “We have a moral obligation to be good stewards of the Earth and this transcends party lines. Regardless of party affiliation, we all know we can do a better job of taking care of the planet.”

Aside from providing free compost and mulch to residents at Brookhaven Town Hall, officials also recently utilized a $5,000 grant to rip up the back lawn of the property to plant and restore native Long Island grasses, from which seeds can be collected and used.

In June, the town officially authorized the nonprofit Art & Nature Group Inc. to transform Brookhaven’s historic Washington Lodge property into a community nature center that offers environmental education programs.

Romaine and Councilman Dan Panico (R-Manorville) organized Brookhaven’s Food Scrap Composting pilot program at town hall last month, with hopes to expand it as a townwide initiative.

Through the program, town employees can deposit food waste, such as banana peels and coffee grinds, into organic material collection containers placed throughout the buildings, which are then collected and composted to be used for garden beds around town buildings.

“We must provide alternative waste management solutions like these if we are going to provide a cleaner, greener earth for future generations,” Panico said in a statement.

Alexander Krasnitz. Photo from CSHL

By Daniel Dunaief

If homeowners could find insects in their home, confirm that they were termites and locate nests before the termites damaged a house, they’d save themselves numerous problems. The same holds true for cancer.

Using the latest molecular biology techniques, researchers at Cold Spring Harbor Laboratory including Associate Professor Alexander Krasnitz and Professor Michael Wigler have explored ways to detect cancer earlier.

Unlike other scientists, who have created tests that reveal the genetic probability of developing cancer, Krasnitz and Wigler developed a blood test to reveal the presence of a tumor that might be hard to spot. Such a test could be particularly valuable for cancers such as ovarian and pancreatic cancer, which can be inoperable by the time they present clinical symptoms.

Urging what Wigler described as a “call to arms,” Krasnitz said they created a blood test, called copy number variation, that they hope will be economically feasible. In copy number variation, sections of genes are repeated. While healthy cells have copy number variation, cancer cells use them like a Jack Nicholson mantra in “The Shining,” where the repetition of “all work and no play makes Jack a dull boy” becomes a calling card for a killing spree.

In cancer, chromosomes or chromosome arms are duplicated or deleted. Sometimes, a narrow region of the genome undergoes amplification, creating multiple copies of the region. Other times, a region of the genome may be lost. Genome-wide copy number variation is a hallmark of cancer. Copy number variation occurs often amid the disruption of DNA repair mechanisms and the breakdown in the way DNA separates into daughter cells during division.

In a recent article in Trends in Molecular Medicine, Krasnitz, Jude Kendall, Joan Alexander, Dan Levy and Wigler — all scientists at CSHL — suggest the potential for single-cell genomic analysis that searches for the presence of copy number variations could raise the alert level for cancer, signaling the need to search more closely for developing tumors.

In most massive cancers in the population, including breast, ovarian and prostate cancer, copy number variation is “ubiquitous,” Krasnitz said. Screening for these changes could provide “evidence for the presence of something abnormal,” which can be validated through other tests, Krasnitz said.

Copy number variation, on its own, is not sufficient to detect cancer, Krasnitz said. Researchers need evidence of similar abnormal copy number profiles in multiple cells. For this test to have clinical relevance, it would need to minimize false positives, which could create alarm and lead to future tests that might not be warranted, while also avoiding false negatives, which would miss the presence of cancer.

The main sources of false positives could come from copy number variation that’s already in cells in the blood that randomly look like a tumor. Cells with partially degraded DNA can have high copy number variation, which the researchers have observed. These profiles, however, arise from random processes and typically look different from each other. Cells from a cancer clone, however, have similar copy number profile.

Cancers with low copy number variation were a minority among the 11 cancers the scientists studied and include a type of colorectal cancer called microsatellite-unstable. If these CSHL researchers developed a preclinical test, they would look for additional ways to detect such cancers.

While numerous technological innovations required for the test exist, including copy number profiling of single cells and methods to enrich specimens from blood for suspected tumors, Krasnitz explained that considerable work remains before its clinical use, including establishing tumor cell counts in the blood of early patients, making single-cell profiling cheaper and finding optimal ways to identify the tissue of origin.

They are planning to study newly diagnosed patients to observe the presence of circulating cells from tumors. Once the scientists prove that the test has some predictive value, they need to ensure that it is economical and that they can follow up with patients to find tumors.

At this point, it’s unclear what the presence of copy number variation might reveal about the type of tumor, which could be a slowly growing or an aggressive type. Additionally, an abnormal indication from this type of analysis wouldn’t reveal anything about the type of cancer. Further tests, including on RNA, would help direct doctors to a specific organ or system.

Apart from his work with Wigler, Krasnitz also has numerous collaborations, including one with CSHL Cancer Center Director David Tuveson.

In his work with Tuveson, Krasnitz is ensuring that the organoid models Tuveson’s lab creates, which are living replicas of tumors taken from patients, faithfully reflect the genetic make up of the tumors. That, Tuveson said, is a significant undertaking because it can validate the organoid model for exploring the biology of tumors.

“This is a deliverable that many people are waiting for,” Tuveson said. The researchers want to make sure “what we grew is what the patient had in the first place.” So far, Tuveson said, the data looks good and the scientists don’t have any examples of the genetics of the organoids differing from that of the tumor.

Krasnitz also attempts to predict an organoid’s response to drugs that haven’t been tested yet based on the organoid’s reaction to other drugs. Tuveson reached out to Krasnitz to work with his group. He said Krasnitz is “a major player” and is “very skilled” in the type of analysis of big data his group generates through the genome, the transcriptome and drug screens. “He’s able to look at those three types of information and make sense of it,” Tuveson said.

Krasnitz is grateful for the support of the Simons Foundation, the National Institutes of Health and the Breast Cancer Research Foundation for his work with Wigler. The most recent article with Wigler is an “invitation for the [research] community to join in the effort,” Krasnitz said. “We want collaborators and more competition in this area.”

The planetarium’s new show Sunstruck explores the birth of our sun. Image from Vanderbilt Planetarium

The Suffolk County Vanderbilt Reichert Planetarium, 180 Little Neck Road, Centerport has premiered two intriguing new shows for the summer and brought back a popular show.

New on the playbill is Sunstruck! during which visitors can travel back in time to experience the birth of our sun and solar system. Discover how the sun came to support life, how it threatens life as we know it and how its energy will one day fade away. Show runs Tuesdays through Sundays at 3 p.m. through Sept. 3.

Also new this summer is Laser U2. Enjoy the classics and modern hits of the band U2, one of the greatest bands of the last three decades. This concert is set against a backdrop of the latest laser art. Your eyes and ears will be your guides into an immersive journey through this British band’s rise and success. Show runs on Friday and Saturday nights at 10 p.m. through Sept. 3.

Finally, back by popular demand is Pink Floyd: The Wall. Based on the 1979 album of the same name, this is the tale of the rock star named Pink Floyd and his downward spiral into madness. This gripping and spellbinding musical journey is beautiful, haunting, powerful and thought provoking. Show runs on Saturday nights at 9 p.m. through Sept. 3.

Tickets for the daytime shows are $13 adults, $12 seniors and students, $9 children. (This price includes required general admission fee.) Tickets for the evening shows are $10 adults, $9 seniors and students, $8 children ages 12 and under. For further information, please call 631-854-5579 or visit www.vanderbiltmuseum.org.

Elizabeth Boon, back row, center, with graduate students from her lab at Stony Brook University. Photo from Elizabeth Boon

By Daniel Dunaief

It was in the back of Elizabeth Boon’s mind for the last decade. How, she wondered, could the switch that is so critical to life not be there and yet still allow for normal functioning? She suspected that there had to be another switch, so the associate professor in the Department of Chemistry at Stony Brook University, spent the last five years looking for it.

Sure enough, she and graduate students including Sajjad Hossain, found it.

Bacteria, like so many other living creatures, need to have a way of detecting nitric oxide gas. At a high enough concentration, this gas can kill them and, indeed, can kill other living creatures as well, including humans.

Nitric oxide is “toxic to any organism at a high enough concentration,” Boon said. “Most organisms have ways of detecting high concentrations … to avoid toxic consequences.” Other research had found a way other bacteria detect this toxic gas through a system called H-NOX, for heme nitric oxide/ oxygen binding protein.

When bacteria live together in colonies called biofilms, many of them typically rely on a signal about the presence of nitric oxide from the H-NOX protein. And yet, some bacteria survived without this seemingly critical protein. “We and others have shown that H-NOX detection of nitric oxide allows bacteria to regulate biofilm formation,” Boon explained.

Elizabeth Boon with her family, from left, Sheridan, 3, Cannon, 7, Beckett, 1, with her husband Isaac Carrico, who is also an Associate Professor in the Chemistry Department at Stony Brook University. Photo by Alfreda James

Named the nitric oxide sensing protein, or NosP, Boon and her team discovered this alternative signaling system that has some of the same functional group as the original mechanism. When activated in one bacteria, the Pseudomonas aeruginosa, this signaling mechanism causes biofilm bacteria to react in the same way as they would when an H-NOX system was alerted, by breaking up the colony into individuals. Using a flagella, an individual bacteria can move to try to escape from an environment containing the toxic gas.

Nicole Sampson, a professor of chemistry at Stony Brook University, suggested that this work was groundbreaking. While some biofilms are benign or even beneficial to humans, including a biofilm in the human gut, many of them, including those involved in hospital-borne infections, can cause illness or exacerbate diseases, particularly for people who are immunocompromised. Bacteria in biofilm are difficult to eradicate through drugs or antibiotics. When they are separated into individuals, however, they don’t have the same rigid defenses.

“They are resistant to most forms of treatment” when they are in biofilms, Boon said. “If we could get the bacteria to disperse, it’d be much easier to kill them. One of the hopes is that we could develop some sort of molecule that might loosen up the film and then we could come in with an antibiotic and kill the bacteria.”

Boon and her team published their results on the cover of the magazine ACS Infectious Disease, where they presented evidence of what they describe as a novel nitric oxide response pathway that regulates biofilm in the bacteria P. aeruginosa, which lack the H-NOX gene. The day the lab discovered this other protein, they celebrated with a trip for frozen yogurt at Sweet Frog.

In an email, Sampson said that finding the mechanism through which bacteria responds to nitric oxide “is important for developing therapies that target biofilms.”

While Boon is pleased that her lab found an alternative nitric oxide signaling system that answered a long-standing question about how some bacteria could respond to an environmental signal that suggested a threat to the biofilm, she said the answer to the question, as so many others do in the world of science, has led to numerous other questions.

For starters, the lab doesn’t yet know the structure of the NosP. “Not all proteins are immediately willing to crystallize,” Boon said. “We’re hopeful we’ll have a structure soon.” She knows it has a heme group, which includes an iron ion in the middle of an organic compound. That’s where the nitric oxide binds.

“We’d like to have the structure to piece together how that signal is relayed out to the end of the protein and how that gets transferred to other proteins that cause changes in behavior,” she said. The NosP is longer than the H-NOX protein, although they appear to have the same function.

Boon has also found that some bacteria have both the H-NOX and the NosP, which raises questions about why there might be an apparent redundancy. In organisms that have both proteins, it’s tempting to conclude that these bacteria live in a broader range of environments, which might suggest that the two systems react to the gas under different conditions. At this point, however, it’s too early to conclude that the additional sensing system developed to enable the bacteria to respond in a wider range of conditions.

Boon believes the nitric oxide system could be a master regulator of bacterial biofilms. “Detecting nitric oxide might be one of the first things that happen” to protect a bacteria, she said. The reason for that is that bacteria, like humans, use iron proteins in respiration. If those proteins are blocked by nitric oxide, any organism could suffocate.

Boon believes a multistep therapeutic approach might work down the road. She believes breaking up the biofilm would be an important first step in making the bacteria vulnerable to attack by antibiotics. She and her graduate students work with bacteria in the lab that generally only cause human disease in people who are already immunocompromised. Even so, her staff takes safety precautions, including working in a hood and wearing protective equipment.

Boon and her husband Isaac Carrico, who is an associate professor in the Department of Chemistry at Stony Brook University, have a 7-year-old son Cannon, a 3-year-old daughter Sheridan and a 1-year-old son Beckett. Boon said she and her husband are equal partners in raising their three children.

In her work, Boon is excited by the possibility of addressing new questions in this nitric oxide mechanism. “We’re trying to cover as much ground as fast as possible,” she said.

Electric Dream Expo at Tesla Science Center in Shoreham brings hundreds

It’s no shock that the legacy of Nikola Tesla, the man responsible for alternating current electricity, resonates so profoundly in Shoreham, given it’s where the Serbian-American inventor’s last remaining laboratory sits.

So in honor of his 161st birthday, more than 600 residents of all ages and from all over the map journeyed to the historic Shoreham site, the Tesla Science Center at Wardenclyffe, for a supercharged celebration of the prolific pioneer.

Under sunny skies Saturday, July 8, the center kicked off its Electric Dream Expo, an all-afternoon event for all things Tesla-inspired.

From interactive exhibits of 3-D printers, high school robotics and old ham radios to demonstrations of the Tesla coil and Tesla-oriented augmented reality, to science-based activities for kids, the event carried a theme of technological innovation of the past, present and future.

“We’re just so thrilled to see so many people are interested and incredibly humbled knowing what Tesla represents to people.”

— Jane Alcorn

Vibrant Tesla cars were also on display throughout the grounds with raffles for 24-hour test drives available to the public. A Tesla impersonator, in full Victorian-era garb, walked around the premises and was photographed with attendees.

The grand event was even broadcast live to more than 50,000 people on Facebook with the help of a hovering drone.

While the center has held birthday celebrations for Tesla in the past, this one was the biggest yet and was also in acknowledgement of the 100th anniversary of the dismantling of his legendary and ahead-of-its-time wireless transmitting tower, which sat on the Shoreham property before being torn down July 4, 1917.

“It seemed important that we do something with a little more bang,” Jane Alcorn, Tesla Science Center board president said of this year’s event, the funds from which would go toward the development of the long-awaited Tesla museum and science center in the laboratory. “It’s exhilarating and humbling. We’re just so thrilled to see so many people are interested, and incredibly humbled knowing what Tesla represents to people.”

Dozens of vendors, including Brookhaven National Lab, North Shore Public Library, Museum of Interesting Things, Custer Institute & Observatory and Long Island Radio & TV Historical Society, set up at tables as people wearing Tesla shirts and pins browsed and bonded over their shared interest in the man who paved the way for several modern gadgets like cellphones. TVs and radios.

“He’s the father of just about everything we use … the hero of modern science,” Manorville resident and longtime Tesla researcher Axel Wicks said.

“He’s the father of just about everything we use … the hero of modern science.”

— Axel Wicks

Rachel Zyats, of Rocky Point, said she was excited that Tesla was finally getting the credit he deserved, as somebody who was greatly overshadowed by rival Thomas Edison

“Tesla was the real inventor,” Zyats said. “I think it’s great that more people are starting to learn about [him].”

Lynbrook mother Leeanne Chiulli and her 11-year-old daughter Kate, wearing a T-shirt with the slogan, “Never underestimate a woman who loves Nikola Tesla,” said the creator is their idol. James Angell, a retired engineer from Commack, pointed to Tesla as a hero in the field of science.

“Tesla is one of the greatest geniuses in the last 100 years in engineering and electrical theory,” Angell said, noting his early development of quantum mechanics. “One hundred years before anyone started talking about it today, Tesla was talking about it. [He] had a concept years and years before anyone thought of it. [So] it’s very encouraging to see so many people who now have an interest in Tesla and his inventions.”

Standing at one of the booths was Joseph Sikorski, a Babylon-based filmmaker who made a documentary entitled “Tower to the People” about the history of Wardenclyffe and Tesla’s accomplishments there.

“Tesla is a great unifier and it’s awesome to see him opening a lot of doors for people of all types,” he said.

Several speakers took to the podium in front of the historic brick building where Tesla built his laboratory in 1901 with the help of renowned architect Stanford White.

“[He] had a concept years and years before anyone thought of it. [So] it’s very encouraging to see so many people who now have an interest in Tesla and his inventions.”

— James Angell

William Terbo, Tesla’s grandnephew, was also in attendance, recounting memories of his great-uncle.

With Suffolk County Legislator Sarah Anker (D-Mount Sinai) alongside, Brookhaven Town Supervisor Ed Romaine (R) presented Alcorn and Marc Alessi, executive director, with a proclamation for their work in keeping Tesla’s legacy alive. “Long live Tesla, long live ideas, long live science,” Romaine said.

At the end of the ceremony, young Kyle Driebeek, of Connecticut, performed “America the Beautiful” and “Happy Birthday” on the theremin, a Russian electronic instrument played without physical contact. Tesla-decorated birthday cake was also served.

Rock Brynner, professor, author and son of famous actor Yul, read Tesla-related excerpts from his book about the New York Power Authority’s origins and expressed his joy in seeing so many people in attendance.

“I expected to see maybe three kids and a sullen nanny, and instead there’s this enormously enthusiastic crowd … it’s wonderful,” Brynner said. “In the 1930s, a journalist asked Albert Einstein what it was like to be the most brilliant genius in the world and Einstein replied, ‘I don’t know, you’ll have to ask Nikola Tesla.’ I urge all of you to learn more about Tesla. His story is enthralling and tragic, beautiful and terribly moving.”

Standing near one of the X-ray scattering instruments, Kevin Yager holds a collection of samples, including a self-assembling polymer film. Photo courtesy of BNL

By Daniel Dunaief

Throw a batch of LEGOs in a closed container and shake it up. When the lid is opened, the LEGOs will likely be spread out randomly across the container, with pieces facing different directions. Chances are few, if any, of the pieces will stick together. Attaching strong magnets to those pieces could change the result, with some of the LEGOs binding together. On a much smaller scale and with pieces made from other parts, this is what researchers who study the world of self-assembled materials do.

Scientists at the Center for Functional Nanomaterials and at the National Synchrotron Light Source II at Brookhaven National Laboratory experiment with small parts that will come together in particular ways based on their energy landscapes through a process called self-assembly.

Every so often, however, a combination of steps will alter the pathway through the energy landscape, causing molecules to end up in a different final configuration. For many scientists, these so-called nonequilibrium states are a nuisance.

Above, Kevin Yager listens to sonified data. When data is sonified, it is translated into sound. Photo by Margaret Schedel

For Kevin Yager, they are an opportunity. A group leader at the CFN who works closely with the NSLS-II, the McGill University-educated Yager wants to understand how the order of these steps can change the final self-assembled product. “In the energy landscape, you have these peaks and valleys and you can take advantage of that to move into a particular state you want,” Yager said. “The high level goal is that, if we understand the fundamentals well enough, we can have a set of design rules for any structure we can dream up.”

At the CFN, Yager manages a nanofabrication facility that uses electron-beam lithography and other techniques to make nanostructures. He would like to fabricate model batteries to show the power of nanomaterials. He is also determined to understand the rules of the road in the self-assembly process, creating the equivalent of an instruction manual for miniature parts.

In future years, this awareness of nonequilibrium self-assembly may lead to revolutionary innovations, enabling the manufacture of parts for electronics, drugs to treat disease and deliver medicine to specific locations in a cell and monitors for the detection of traces of radioactivity or toxins in the environment, among many other possibilities.

Yager’s colleagues saw considerable opportunities for advancement from his work. Nonequilibrium self-assembly has “significant potential for a broad range of nanodevices and materials due to its ability to create complex structures with ease,” Oleg Gang, a group leader in Soft and Bio Nanomaterials at the CFN, explained in an email. Yager is an “excellent scientist” who produces “outstanding results.”

One of the things Yager hopes his research can develop is a way to “trick self-assembly into making structures they don’t natively want to make” by using the order of steps to control the final result.

As an example, Yager said he developed a sequence of steps in which nanoscale cylinders pack hexagonal lattices into a plane. These lattices tend to point in random directions as the cylinders form. By following several steps, including sheer aligning a plane and then thermal processing, the cylinders flip from horizontal to vertical as they inherit the alignment of the sheered surface. Flipping these cylinders, in turn, causes the hexagons all to point in the same direction. When Yager conducted these steps in a different order, he produced a different structure.

Broadly speaking, Yager is working on stacking self-assembling layers. In his case, however, the layers aren’t like turkey and swiss cheese on a sandwich, in which the order is irrelevant to the desired final product. Each layer has a hand in directing the way the subsequent layers stack themselves. Choosing the sequence in which he stacks the materials controls their structure.

Yager is working with Esther Takeuchi and Amy Marschilok at Stony Brook University to develop an understanding of the nanostructure of batteries. Gang suggested that Yager’s expertise is “invaluable for many scientists who are coming to the CFN to characterize nanomaterials using synchtrotron methods. In many cases, it would probably be impossible to achieve such quantitative understanding without [Yager’s] input.”

Yager and his wife Margaret Schedel, an associate professor in the Department of Music at Stony Brook University who is a cellist and a composer, live in East Setauket. The couple combined their talents when they sought ways to turn the data produced by the CFN, the NSLS and the NSLS-II into sound.

Scientists typically convert their information into visual images, but there’s “no reason we can’t do that with sound,” Yager said. “When you listen to data, you sometimes pick up features you wouldn’t have seen.”

One of the benefits of turning the data into sound is that researchers can work on something else and listen to the collection of data in the background, he said. If anything unexpected happens, or there is a problem with a sample or piece of equipment, they might hear it and take measures more rapidly to correct the process. “This started as a fun collaboration,” Yager said, “but it is useful.”

Schedel is working on sonifying penguin data as well. She also sonified wave data on Long Island. “By listening to the tides quickly, larger patterns emerge,” she said, adding that Yager thought the idea was theoretically interesting until he listened to misaligned data and then he recognized its benefit.

Schedel’s goal is to see this sonification effort spread from one beamline to all of them and then to the Fermilab near Chicago and elsewhere. She wants sonification to become “an ear worm in the science community.”

While Schedel introduced Yager to the world of sound in his research, he introduced her to sailing, an activity he enjoyed while growing up in the suburbs of Montreal. When she sails with him, they are “half in and half out of the boat,” Schedel said. It’s like two people “flying a kite, but you are the kite. You have to learn how to counterbalance” the boat. They hike out so they can take turns faster without tipping over, she said.

The Tesla Science Center at Wardenclyffe is located at 5 Randall Road in Shoreham. File photo by Wenhao Ma

Shoreham’s Tesla Science Center at Wardenclyffe is hosting the Electric Dream Expo Saturday, July 8 — a community event honoring science innovator Nikola Tesla’s 161st birthday, as well as the 100th anniversary of the dismantling of Tesla’s famous wireless transmitting tower. The Electric Dream Expo is comprised of an afternoon Science & Innovation Expo from 2 to 6 p.m. on the site of Tesla’s last existing laboratory in Shoreham, with exhibits, demonstrations, food and entertainment.

There will also be an evening of Tesla entertainment, called Summer Electrified!, from 8 to 10 p.m. at Shoreham-Wading River High School, 250A Route 25A, Shoreham, featuring Tesla-inspired performances.

Technological innovation of the past, present and future is the expo’s theme, and attendees at the daytime Science & Innovation Expo will experience Tesla-themed exhibits and activities for all ages, including a HAM radio presentation, displays by The Museum of Interesting Things and Long Island Radio & TV Historical Society, Tesla coil exhibit, 3-D printer and robotics demos, interactive exhibits of Tesla inventions and a Tesla car display.

Tours and a special presentation of innovation will feature the history of Tesla’s 187-foot wireless transmitter tower, built on the Shoreham site in 1907 and dismantled 100 years ago. The tower’s base remains as a focal point, along with Tesla’s Wardenclyffe Laboratory, built from 1901 to 1905 by renowned architect Stanford White, and now being renovated into an immersive science and education center.

The Summer Electrified! an evening of Tesla entertainment, features ArcAttack!, a musical light show using Tesla coil technology, as well as a unique lineup of performances and readings focused on Tesla’s life and legacies.

Admission to the Science & Innovation Expo is $15 for ages 13 and over, $5 for ages 5 to 12 and free for children under 5. Tickets for the Summer Electrified! performances are $25 per person 13 and over, $12 for ages 5 to 12 and free for children under 5. Admission to both events is $35 for 13 and over, $15 for ages 5 to 12 and free for children under 5. A special price of $25 per car covers admission to the daytime Science Innovation Expo for all passengers, and is limited to the first 50 car tickets purchased. Tickets can be purchased at www.teslasciencecenter.org.

HXN team members, from left, Evgeny Nazaretski, Ken Lauer, Sebastian Kalbfleisch, Xiaojing Huang, Yong Chu, Nathalie Bouet and Hanfei Yan. Photo courtesy of BNL

By Daniel Dunaief

There’s precision in measurements and then there’s the world of Yong Chu. The head of a beamline that’s housed off to the side in a separate, concrete structure from similar efforts at Brookhaven National Laboratory, Chu led the design, construction and commissioning of a sophisticated beamline with a resolution of as low as 3 nanometers, which he hopes will get down to 1 nanometer within a year.

Just as a measure of contrast, a human hair is about 80,000 nanometers wide. Why so fine a resolution? For starters, seeing objects or processes at that high level can offer insights into how they function, how to improve their manufacture or how to counteract the effects of harmful processes.

With a battery, for example, the Hard X-ray Nanoprobe, or HXN beamline, could help reveal structural weaknesses in the nanostructure that could cause safety issues. In biology, numerous functions involve sub-cellular organelles that respond to proteins. Proteins are typically smaller than the HXN beamline can image, although researchers can tag the proteins with metals, which allows Chu, his colleagues and visiting scientists to see an aggregate of these proteins.

The HXN beamline can also help explore environmental problems, such as how plants transport harmful nanoparticles to their fruits or how artificial compounds absorb nuclear waste. Imaging beamlines that use micro-focused beams typically offer spatial resolution of 10 microns, 1 micron or even 100 nanometers, according to Ryan Tappero, the head scientist at the X-ray Fluorescence Microprobe at BNL, who has used the HXN for his research. Using the NSLS II source properties and a new x-ray optics development routinely offers resolution of 10 nanometers, which pushes the spatial resolution down by another factor of 10, which makes the HXN, according to Tappero, a “game changer.”

Tappero described Chu as a “rock star” and suggested he was an “exceptional beamline scientist” who is “very knowledgeable about X-ray optics.”

BNL houses 19 beamlines at the National Synchrotron Light Source II, a state-of-the-art facility large enough that scientists ride adult tricycles inside it to travel from one beamline to another and to transport supplies around the facility. BNL is building another nine beamlines that it hopes to have operational within the next 18 months. Each of these beamlines offers a different way to explore the world of matter. Some beamlines do not use a focused beam, while others produce beams with high angular or high energy resolution. Imaging beamlines such as the HXN produce a small beam size.

The HXN beamline has the highest spatial resolution of any beamline at the NSLS-II. Scientists building the HXN grew a nanofocusing lens with a dedicated deposition system that was constructed at the NSLS-II Research and Development lab. The system grew a nanofocusing lens a layer at a time, alternating materials and controlling the thickness at better than 1 nanometer, Chu explained.

The beamline where Chu works has padded walls, a door separating it from the rest of the light source and a monitor that records the temperature to the thousandths of a degree. “We are constantly monitoring the temperature around the X-ray microscope and inside of the X-ray microscope chamber,” he said. Around the microscope, he can keep the temperature stable within 0.03 degree Celsius. In the chamber, the scientists maintain the temperature at better than 0.003 degree Celsius.

So, now that Chu and his colleagues built their beamline, have the scientists come? Indeed, the interest in using the HXN has been well above the available time slots. For the three cycles each year, BNL receives about four requests for each available time. This reflects the unique qualities of the instrument, Chu said, adding that he doesn’t expect the rate to drop considerably, even as the HXN continues to operate, because of the ongoing demand.

Researchers have to go through a peer review process, where their ideas are graded for the likelihood of success and for the opportunity to learn from the experiments. All beam time proposals are reviewed by external expert panels, which examine the scientific merit, appropriateness of use of the facility, capability of proposers and quality of prior performance and the research plan and technical feasibility.

Chu fields about 10 calls per month from scientists who want to speak with him about the feasibility of their ideas. He may suggest another station at the NSLS-II or at the Advanced Photon Source at Argonne National Laboratory in Chicago, where he was a beamline scientist starting in 1999.

“I know many of the beamlines” at the Advanced Photon Source, he said. “I recommend some of the potential users to perform experiments at the APS first before coming to the HXN.” By the time scientists arrive at his beamline, Chu said he’s gotten to know them through numerous discussions. He considers them “as a guest” at the HXN hotel. “We try to make sure the experimental needs for the users are met as much as possible,” he said.

The HXN beamline has three staff scientists and two postdoctoral fellows who remain in contact with scientists who use the facility. “For most of the users, at least one of us is working throughout the weekends and late evenings,” said Chu.

Not just a staff scientist, Chu is also a user of the HXN, with currently one active general user proposal through a peer review process in which he is collaborating with Stony Brook University and BNL scientist Esther Takeuchi to explore the nanostructure of metal atoms during phase separation in batteries.

Chu and his wife Youngkyu Park, who works at Cold Spring Harbor Laboratory as a research investigator in basic and preclinical cancer research, live in Northport. The couple’s 22-year-old son Luke is attending Nassau Community College and is planning to transfer to Stony Brook this fall to study engineering. Their daughter Joyce is 18 and is enrolled in the Parsons School of Design in New York.

Chu grew up in Seoul, South Korea, and came to the United States when he was 18. He attended Caltech. While Chu’s parents wanted him to become a doctor, he was more inspired by a cartoon called Astro Boy, in which a scientist, Dr. Tenma, is a hero solving problems. As for the work of the scientists who visit his beamline, Chu said the “success of individual users is the success of the beamline.”

SBU graduate student and grand niece of world renowned anthropologist Richard Leakey, Acacia Leakey, draws a sketch of huts in the village of Ambodiaviavy, Madagascar as the children look on. Photo from Mickie Nagel

By Daniel Dunaief

 

Mickie Nagel recently returned from the island nation of Madagascar, and she’s filled with ideas, inspiration, observations and opportunities. One of the three founders of a new nongovernmental organization called BeLocal, the Laurel Hollow resident spent several weeks with Stony Brook University graduate students Leila Esmailzada and Acacia Leakey taking videos and gathering information about life in Madagascar.

The goal of the new organization is to share this footage and insight with undergraduate engineers at SBU, who might come up with innovations that could enhance the quality of life for the Malagasy people.

In one village, a man showed her a three-inch lump on his shoulder, which he got by dragging a long stick with bunches of bananas that weigh over 100 pounds along a clay footpath out of the forest. People also carry rice that weighs over 150 pounds on their heads, while many others haul buckets of water from rivers and streams to their homes while walking barefoot.

In addition to transportation, Nagel also found that villagers around Centre ValBio, a Stony Brook research station, had basic food and water needs. Over 17 years ago, another group had installed four water pumps in a village to provide access to water. Only one pump now works.

SBU graduate student Leila Esmailzada helps villagers in Ambodiaviavy, Madagascar, clean rice. The job is usually delegated to the children who pound the rice for 30 minutes. Photo by Mickie Nagel

As for food, some villagers in Madagascar spend hours preparing rice, including beating off the husks and drying the rice. They store this hard-earned food in huts that are often infiltrated with rats, who consume their rice and leave their feces, which spreads disease.

Traveling with Esmailzada and Leakey, Nagel not only helped document life in these villages but also searched for information about available resources to drive engineering innovations, while Leakey gathered information about an invasive species of guava.

“Ideally, if any projects require wood, then they should incorporate guava sticks into their design, as opposed to planks from forest trees,” explained Leakey in an email sent from Madagascar. The graduate student, who recently earned her bachelor’s degree at Stony Brook, will be recording the average thickness of the stems, the average length of a straight piece and the load capacity of the branches. Leakey plans to return from the African continent in the beginning of August.

Leakey also visited metalworkers to explore the local capacity. The raw materials come from scrap metal dealers, who often get them from old car parts.

Nagel started BeLocal with her husband Jeff Nagel and a classmate of his from their days as undergraduates at Carnegie Mellon University, Eric Bergerson. Indeed, BeLocal fulfills a long-standing goal of Jeff Nagel’s. Before freshman year in college, Nagel told Bergerson that he wanted to do something that had a positive impact on the world.

While the founders have contributed through their work, their jobs and their families, they found that partnering with Stony Brook University and Distinguished Professor Patricia Wright in Madagascar presented a chance to have a meaningful impact on life on the island nation.

Nagel, whose background is in marketing, visited Madagascar over two years ago, where she traveled for over a hundred hours on a bus through the country. “You just see people living below the poverty line and you see how that plays out in normal day-to-day activities,” she said. “You see a young mom carrying a child on her back and one on her front, with heavy produce on her head and you just think, ‘Wow, there has to be an easier way for some of this.’”

Mickie Nagel, far right, on an earlier trip to Central ValBio with her daughters Gabrielle, far left, and Lauren, center. when they first visited Centre ValBio. Photo by Heidi Hutner

When Nagel returned from her initial trip to Madagascar with her daughters Gabrielle, 18, and Lauren, 17, she and her husband thought people around the world would likely want to help but that not everyone could afford to travel that far.

Nagel recalls Bergerson, who is the director of research at the social data intelligence company Tickertags, telling her that they “don’t have to travel there. You can videotape the daily challenges and crowd source” innovations.

That’s exactly what Leakey and Esmailzada did for the last few weeks. Leakey said she is looking forward to working with senior design students as they go through their projects at Stony Brook and is eager to see how they understand the situation “through the footage and pictures we collect.”

The BeLocal approach isn’t limited to Madagascar, the BeLocal founders suggested. Indeed, given the distance to an island famous for its lemurs, animated movies and an Imax film that features primates with personality, BeLocal could have started in a Central American country like Belize.

Mickie Nagel, however, urged them to start at a location where they would immediately have the trust of local residents. That, she suggested, came from the over quarter of a century of work from Wright, an award-winning scientist who has not only helped preserve Ranomafana [National Park in Madagascar] but has also helped bring health care and education to the villages around the CVB research station. Wright and the Malagasy people have a “mutual respect for each other,” Nagel said.

“People have been exceptionally warm and welcoming,” Leakey said. Getting people accustomed to the presence of cameras hasn’t been straightforward, as people sometimes stop what they are doing, but the guides have helped make the villagers more comfortable.

Jeff Nagel, who works at a private equity firm in New York City, explained that Madagascar is the first step for BeLocal. This effort “can be expanded to other countries or other areas,” Nagel said. “It doesn’t have to be engineers and universities,” but can be instituted by creative people everywhere.

At this point, BeLocal is not looking for any additional funding but might consider expanding the effort at this time next year. Nagel said this fall, they will look for professional engineers to advise on projects. “We would like people who are interested in participating or just keeping up with developments to come and register on our website, www.BeLocalgrp.com,” she suggested.

The site, which the group is upgrading, is up and running. Bergerson explained that they have a “lot of infrastructure to build on” to create the crowd sourcing platform.

Jeff Nagel suggested that this effort is designed to use technology constructively. “Technology’s job, first and foremost, is to help humanity,” he said. “This is a chance to use it in a way that matters to people.”