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Brookhaven National Laboratory

Members of the quantum materials team, from left, Gregory Doerk, Jerzy Sadowski, Kevin Yager, Young Jae Shin and Aaron Stein. Photo from BNL

By Daniel Dunaief

Henry Ford revolutionized the way people manufactured cars through automation, speeding up the process, reducing waste and cutting costs.

Similarly, at Brookhaven National Laboratory, researchers like the newly hired Young Jae Shin, who is a staff scientist at the Center for Functional Nanomaterials, hopes to improve the process of automating the handling of thin flakes of material used in a next generation technology called quantum information science, or QIS.

Working with scientists at Harvard University and the Massachusetts Institute of Technology, Shin is looking for ways to handle these flakes, which are one atom thick, of two-dimensional layers from different materials. Stacked together, these flakes can help create structures with specific electronic, magnetic or optical properties that can be used as sensors, in communication, or encryption.

Young Jae Shin at Harvard University, where he was a post doctoral researcher. Photo from Y. Shin

“Researchers are building these kinds of customized structures manually now,” explained Kevin Yager, leader of the CFN Electronic Nanomaterials Group, in an email. “QPress [Quantum Material Press] will allow us to automate this.” At this point, QPress is just starting, but, if it works, it will “absolutely allow us to accelerate the study of these materials, allowing researchers to find optimal materials quickly,” Yager continued.

Theoretically, quantum computers overcome the limitations of other systems, Shin explained.

The flakes come from the exfoliation of thin structures taken from a bulk material. This is akin to a collection of leaves that fall around trees. According to Yager, the structures scientists hope to make would be akin to a collection of leaves from different trees, put together to make a new structure or material with specific properties. “The idea is for the robot to sift through the flakes, and identify the ‘best’ ones and to stack these together into the right structure. The ‘stacking’ will involve combining flakes of different materials,” he said.

The less desirable flakes typically are the wrong size, have tears, ripples or other defects and have contaminants. Groups of scientists are predicting the kinds of layered designs that will have desired properties.

Shin suggested that the CFN supports the needs of the end user community, as CFN is a “user-based facility.”

Physicists at Harvard and MIT plan to use the QPress to study unusual forms of superconductivity. By tapping into materials that conduct electricity without losing energy at lower temperatures, researchers may make progress in quantum computing, which could exceed the ability of the current state-of-the-art supercomputers.

Stacking the flakes can create new materials whose properties not only depend on the individual layers, but also on the angle between the stacks. Scientists can change one of these new structures from having metallic to having insulating properties, just by altering the relative angle of the atoms. The challenge, however, is that putting these fine layers together by hand takes time and generates errors which, BNL hopes, an automated approach can help reduce.

“Ultimately, we would like to develop a robot that delivers a stacked structure based on the 2-D flake sequences and crystal orientations that scientists select through a web interface” to a machine, Charles Black, the head of the Center for Functional Nanomaterials at BNL, explained in a recent BNL feature. “If successful, the QPress would enable scientists to spend their time and energy studying materials, rather than making them.”

Barring unforeseen delays, scientists anticipate that they will be able to build a machine that creates these flakes, catalogs them, stacks them and characterizes their properties within three years. These functions will be available online in stages, to allow the use of the QPress prior to its completion.

Each stage in the QPress process uses computer software to reduce the effort involved in generating and interpreting usable structures.

Minh Hoai Nguyen, an assistant professor in the Department of Computer Science at Stony Brook University and doctoral student Boyu Wang from the Computer Vision Lab at SBU are creating a flake cataloger, which will use image analysis software to scan and record the location of flakes and their properties.

“The flakes that scientists are interested in are thin and thus faint, so manual and visual inspection is a laborious and error-prone process,” Nguyen said in the BNL feature.

At BNL, Shin is one of three scientists the Upton-based facility is hiring as a part of this effort. They are also seeking robot or imaging process experts. Shin has “been in the CFN just a short while, but is already having an impact- — for instance, allowing us to handle classes of two-dimensional materials that we were not working with before,” Yager said.

The field of quantum information science is extremely competitive, with researchers from all over the world seeking ways to benefit from the properties of materials on such a small scale. The United States has been investing in this field to develop leadership science in this area.

The University of Tokyo has developed an automation system, but Shin explained that it is still not perfect.

Yager said that numerous unknown applications are “waiting to be discovered. Researchers are working hard on real quantum computers. Prototypes already exist but creating viable large-scale quantum computers is a major challenge.”

A resident of on-site housing at BNL, Shin was born in the United States and grew up in Korea. He is married to Hyo Jung Kim, who is studying violin at Boston University. 

As for the work Shin and others are doing, Yager suggested that the effort has generated considerable interest at the CFN.

“There is huge excitement at BNL about quantum research broadly and QPress in particular,” said Yager. Shin is “a big part of this — bringing new technical knowledge and new enthusiasm to this ambitious project.”

From left, Supervisor Ed Romaine, Councilman Dan Panico, honoree Cathy Cutler and Town of Brookhaven Receiver of Taxes Louis Marcoccia at the March 21 event. Photo from BNL

Cathy Cutler, director of the Medical Isotope Research & Production program at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory, was honored for her scientific accomplishments at Town of Brookhaven’s 33rd annual Women’s Recognition Night, held on March 21 at Town Hall in Farmingville. The Shirley resident was among 13 women honored for their contributions to a variety of fields at a public ceremony that celebrated the significant achievements of local women during Women’s History Month.

At BNL, Cutler and her team collaborate on research with radiopharmaceuticals for cancer therapy, and they make radioisotopes required for this research as well. These radioisotopes would otherwise not be available but are, thanks to the high-energy Brookhaven Linac Isotope Producer (BLIP) that is part of the extensive particle accelerator infrastructure for the Relativistic Heavy Ion Collider — a U.S. Department of Energy Office of Science User Facility for fundamental nuclear physics research located at Brookhaven.

Radiopharmaceuticals are vital for “noninvasive,” personalized cancer treatments that provide patients with high-impact doses to combat tumors without damaging nearby healthy cells. With more than 20 years’ experience developing and evaluating radiopharmaceuticals, Cutler is helping lead their development for “theranostics” that combine medical therapies with diagnostic medical tests.

“I am honored to receive this award from the Town of Brookhaven,” said Cutler, who acknowledged the contributions of her colleagues in the success of her research and the isotope program at BNL. “Brookhaven Lab is one of just a few facilities in the DOE complex that can produce certain critical medical isotopes. We are hopeful that this research will lead to improved treatment options for cancer patients.”

“The Town of Brookhaven is pleased to recognize Cathy Cutler for her achievements as an outstanding scientist, leader, and role model for those aspiring to careers in science, technology, and engineering,” said Town of Brookhaven Supervisor Ed Romaine (R).

Cutler joined BNL in 2015 after earning a doctorate in inorganic chemistry from the University of Cincinnati and spending nearly 17 years at the University of Missouri Research Reactor Center. She serves as a mentor to young scientists, has received numerous awards and holds several patents.

In addition to her role at the lab, Cutler has served as chair of the Society of Nuclear Medicine and Molecular Imaging’s committee on radiopharmaceuticals. She is a board member for the society’s Therapy Center of Excellence and Center for Molecular Imaging Innovation and Translation and an executive board member for the Society of Radiopharmaceutical Sciences.

For more information, please visit www.science.energy.gov.

Enyuan Hu with images that represent electron orbitals. Photo from Enyuan Hu

By Daniel Dunaief

Charging and recharging a battery can cause a strain akin to working constantly without a break. Doctors or nurses who work too long in emergency rooms or drivers who remain on the road too long without walking around a car or truck or stopping for food can function at a lower level and can make mistakes from all the strain.

Batteries have a similar problem, as the process of charging them builds up a structural tension in the cathode that can lead to cracks that reduce their effectiveness.

Working with scientists at Brookhaven National Laboratory and the Stanford Synchrotron Radiation Lightsource, Enyuan Hu, an assistant chemist at BNL, has revealed that a doughnut-shaped cathode, with a hole in the middle, is more effective at holding and regenerating charges than a snowball shape, which allows strain to build up and form cracks. 

At this point, scientists would still need to conduct additional experiments to determine whether this structure would allow a battery to hold and regenerate a charge more effectively. Nonetheless, the work, which was published in Advanced Functional Materials, has the potential to lead to further advances in battery research.

“The hollow [structure] is more resistant to the stress,” said Hu. Lithium is extracted from the lattice during charging and changes the volume, which can lead to cracks.

The hollow shape has an effective diffusion lens that is shorter than a solid one, he added.

Yijin Liu, a staff scientist at Stanford’s Linear Accelerator Center (SLAC) and a collaborator on the project, suggested that the result creates a strategic puzzle for battery manufacture.

Enyuan Hu with drawings that represent images of metal 3d orbitals interacting with oxygen 2p obits, forming either sigma bonds (above) or pi bonds (below).
Photo from Enyuan Hu

“On the one hand, the hollow particles are less likely to crack,” said Liu. “On the other hand, solid particles exhibit better packing density and, thus, energy density. Our results suggest that careful consideration needs to be carried out to find the optimal balance.” The conventional wisdom about what caused a cathode to become less effective involved the release of oxygen at high voltage, Hu said, adding that this explanation is valid for some materials, but not every one.

Oxygen release initiates the process of structural degradation. This reduces voltage and the ability to build up and release charges. This new experiment, however, may cause researchers to rethink the process. Oxygen is not released from the bulk even though battery efficiency declines. Other possible processes, like loss of electric contact, could cause this.

“In this specific case of nickel-rich layered material, it looks like the crack induced by strain and inhomogeneities is the key,” said Hu.

In the past, scientists had limited knowledge about cracks and homogeneity, or the consistent resilience of the material in the cathode.

The development of new technology and the ability to work together across the country made this analysis possible. “This work is an excellent example of cross-laboratory collaboration,” said Liu. “We made use of cutting edge techniques available at both BNL and SLAC to collect experimental data with complementary information.”

At this point, Hu estimates that about half the battery community believes oxygen release causes the problem for the cathode, while the other half, which includes Hu, thinks the challenge comes from surface or structural problems. 

He has been working to understand this problem for about three years as a part of a five-year study. His role is to explore the role of the cathode, specifically, which is his particular area of expertise.

Hu is a part of a Battery500 project. The goal of the project is to develop lithium-metal batteries that have almost triple the specific energy currently employed in electric vehicles. A successful Battery500 will produce batteries that are smaller, lighter and less expensive than today’s model.

Liu expressed his appreciation for Hu’s contributions to their collaboration and the field, saying Hu “brings more than just excellent expertise in battery science into our collaboration. His enthusiasm and can-do attitude also positively impacts everyone in the team, including several students and postdocs in our group.”

In the bigger picture, Hu would like to understand how lithium travels through a battery. At each stage in a journey that involves diffusing through a cathode, an anode and migrating through the electrolyte, lithium interacts with its neighbors. How it interacts with these neighbors determines how fast it travels. 

Finding lithium during these interactions, however, can be even more challenging than searching for Waldo in a large picture, because lithium is small, travels quickly and can alter its journey depending on the structure of the cathode and anode.

Ideally, understanding the journey would lead to more efficient batteries. The obstacles and thresholds a lithium ion needs to cross mirror the ones that Hu sees in everyday life and he believes he needs to circumvent these obstacles to advance in his career.

One of the biggest challenges he faces is his comfort zone. “Sometimes, [comfort zones] prevent us from getting exposed to new things and ideas,” he said. “We have to be constantly motivated by new ideas.”

A cathode expert, Hu has pushed himself to learn more about the anode and the electrolyte.

A resident of Stony Brook, Hu lives with his wife, Yaqian Lin, who is an accountant in Port Jefferson, and their son Daniel, who attends Setauket Elementary School.

Hu and Lin met in China, where their families were close friends. They didn’t know each other growing up in Hefei, which is in the southeast part of the country.

Hu appreciates the support Lin provides, especially in a job that doesn’t have regular hours.

“There are a lot of off-schedule operations and I sometimes need to leave home at 10 p.m. and come back in the early morning because I have an experiment that requires my immediate attention. My wife is very supportive.”

As for his work at BNL, Hu said he “loves doing experiments here. It has given me room for exploring new areas in scientific research.”

Justin Zhang

Justin Zhang, a junior at Ward Melville High School in East Setauket, won first place in the 2019 Model Bridge Building Contest at the U.S. Department of Energy’s Brookhaven National Laboratory in Upton.

In this annual regional competition, coordinated by BNL’s Office of Educational Programs, high school students across Long Island design, construct and test model bridges made of basswood that are intended to be simplified versions of real-world bridges. Participants must apply physics and engineering principles to meet a stringent set of specifications. Their bridges are judged based on efficiency, which is calculated using the weight of the bridge and the amount of weight it can support before breaking or bending more than one inch. A separate award is given to the student with the most aesthetic design.

For this year’s competition, 132 students from 15 high schools registered bridges. Fifty-two students representing nine schools qualified. An awards ceremony to honor the winners was held at BNL on March 15.

Zhang, whose bridge weighed 12.75 grams and had an efficiency of 2819.03, was unable to attend the ceremony because he was participating in the New York State Science Olympiad. Zhang’s father accepted the award on his behalf.

“I had built bridges, towers, and, more recently, boomilevers (kind of like the arm at the end of a crane) as a participant on my school’s Science Olympiad team and I really love civil engineering,” said Zhang. 

“So, the Bridge Building Contest perfectly fit both my past experience and interests. Through the competition, I was able to improve upon the ideas that I had developed in years prior working on engineering challenges and apply some new things that I had learned. It was particularly challenging for me to adjust to all the specific rules involved in the construction process,” he explained.

Gary Nepravishta, a freshman at Division Avenue High School in Levittown, took second place with his bridge weighing 18.2 grams and having an efficiency of 1949.45.

With a mass of 13.88 grams and efficiency of 1598.68, the bridge built by senior William Musumeci of Smithtown High School East won third place. “I built one bridge and tested it to see where it broke, and then I used a computer-aided design program to make a stronger bridge.” said Musumeci, who will be attending Farmingdale University to study construction engineering.

Sophomore Benjamin Farina of John Glenn High School in Elwood won the aesthetic award for best-looking bridge.

An honorary award was given to retired BNL engineer Marty Woodle, who was recognized for his 40 years of service as a volunteer for the competition. 

“If you become an engineer, you are not necessarily trapped into one little aspect of science,” said Woodle. “The world is open to you to do some really fascinating work.”

Zhang’s and Nepravishta’s bridges have been entered into the 2019 International Bridge Building Contest, to be held in Baltimore, Maryland, in early April. For more information, visit www.science.energy.gov.

Staff from Brookhaven National Laboratory and Germany’s Centre for Advanced Materials during a recent meeting to discuss a future collaboration, from left, Oleg Gang, group leader for Soft and Bio Nanomaterials; Norbert Huber, the director of the ZHM; Charles Black, the director of the CFN; Patrick Huber, a principal investigator; Priscilla Antunez and Dario Stacchiola, group leader for the Interface Science and Catalysis team. Photo by Joseph Rubin/BNL

By Daniel Dunaief

Priscilla Antunez is a scientist with some unusual expertise. No, she doesn’t run experiments using a rare or expensive piece of equipment; and no, she hasn’t developed a way to understand the properties of unimaginably small particles that assemble themselves and may one day help run future technology.

What Antunez brings to the Center for Functional Nanomaterials, or CFN, at Brookhaven National Laboratory is a background in business. That puts her in a position to help the scientists who run experiments at the CFN or the researchers at BNL, or elsewhere, who study the properties of catalysts or self-assembling small materials.

“This opportunity for me is a maximization of my impact on science,” said Antunez, who joined BNL from Illinois’ Argonne National Laboratory in December. If she were to run her own lab, she would be involved in a project or a handful of projects. “[At BNL] I have the opportunity to help many scientists with their work,” she said.

Priscilla Antunez Photo by Joseph Rubin/BNL

Her assistance will take numerous forms, from acknowledging and celebrating the science the 30 researchers at the CFN and the 600 scientists from around the world who visit the center perform, to developing broader and deeper partnerships with industry.

Her long-term goal is to build a strategy around specific projects and establish partnerships to advance the science and technology, which might include industry.

“We are trying to make [the information] widely available to everyone,” Antunez said. “We are proud of what they’re doing and proud of how we’re helping them accomplish their goals. We’re ultimately getting their science out there, helping them with viewership and readership.”

She is already writing the highlights of scientific papers, which she hopes to share widely.

In addition to sending research updates to the Department of Energy, which sponsors the BNL facility, Antunez will also try to broaden the audience for the research by sharing it on LinkedIn, posting it on the website, and, in some cases, sending out email updates. The LinkedIn page, for now, is by invitation only. Interested readers can request to join at https://www.linkedin.com/groups/8600642.

Antunez takes over for James Dickerson, who has become the first chief scientific officer at Consumer Reports, where he leads the technical and scientific aspects of all activities related to CR’s testing and research, including food and product safety programs. Antunez and Charles Black, the director of the CFN, decided to expand Antunez’s role as assistant director.

Her job is “to help the CFN develop its overall strategy for making partnerships and nurturing them to be successful and have impact,” Black explained in an email.

“For the CFN to thrive in its second 10 years of operations will require us to form deeper relationships with scientific partners, including CFN users, research groups around the world, industries and other national labs,” he said.

Indeed, Black, Oleg Gang, who is the group leader for Soft and Bio Nanomaterials, Dario Stacchiola, the group leader for the Interface Science and Catalysis team, and Antunez recently met with Norbert and Patrick Huber, from Hamburg’s Centre for Advanced Materials.

“We had group and individual discussions to explore complementary areas of research,” said Antunez.

After scientists from the centers meet again to develop research plans, she can “help as much and as early as the CFN scientists need.” She can also coordinate between the CFN and the Contracts Office if the center needs a Cooperative Research and Development Agreement.

The scientist encourages CFN scientists to visit whenever they believe they have an idea that might have an application. She’s had meetings with the Tech Transfer Office and CFN groups and is hoping to put more such gatherings on the calendar.

The CFN is continuing to grow and will be adding five or six new scientific staff positions, Black said. Antunez will “oversee a strategy that helps all CFN staff form deep, productive partnerships that produce new nanoscience breakthroughs.

Black explained that it was an “exciting, challenging, important job and we’re thrilled to have someone as talented and energetic as [Antunez] to take it on.”

Indeed, Antunez was such an effective researcher prior to venturing into the business world that the CFN had tried to hire her once before, to be a postdoctoral researcher in the area of self-assembly. At that time, Antunez had decided to move toward business and took a job at Argonne National Laboratory. “In the end it has worked out well for CFN, because [Antunez] gained valuable experience at Argonne that she has brought to BNL and is using every day,” said Black.

The CFN has divided the work into five groups, each of which has a team leader. Antunez is working on their current partnerships and recruiting needs. She meets with the group leaders during regular management meetings to discuss overall plans, work and safety and the required reports to the DOE.

Antunez lives in Mineola with her husband, Jordan S. Birnbaum, who is the chief behavioral economist at ADP. When she was in college at Universidad de Sonora, Antunez wanted to double major in science and contemporary dance. At the public university in Mexico at the time, she had to choose one or the other, despite an invitation from one of the founding professors of the school of dance to major in dance.

Nowadays, Antunez, who earned her doctorate in chemistry from the University of Southern California, goes to the gym and takes yoga and dance classes, but doesn’t study the art form anymore.

With her science background, Antunez anticipated becoming a teacher. Her current work allows her to share her expertise with scientists. She has also been able to work with some postdoctoral researchers at BNL.

As for her work, Antunez appreciates the opportunity to build connections between scientists and industry. “Most of our technologies are on the basic research side and so the partnerships are much more fluid, which gives us a lot more flexibility in terms of our strategic partners,” she said.

R.C. Murphy Junior High School and Harbor Country Day School take home honors

Great Neck South Middle School’s Team 1 edged out R.C. Murphy Junior High School of Stony Brook to take first place in the Long Island Regional Middle School Science Bowl held at the U.S. Department of Energy’s Brookhaven National Laboratory in Upton on March 2.

Longwood Junior High School in Middle Island placed third and Harbor Country Day School in St. James placed fourth.

Twelve teams took part in the competition and were made up of four students, one alternate and a teacher who served as an adviser and coach. Presented in a fast-paced question-and-answer format, each team was tested on a range of science disciplines including biology, chemistry, Earth science, physics, energy and math.

As the winning team, Great Neck South will be awarded an all-expenses-paid trip to the National Finals in Washington, D.C., scheduled to take place from April 25 to 29. The top 16 middle school teams in the National Finals will win $1,000 for their schools’ science departments.

“The National Science Bowl has grown into one of the most prestigious and competitive science academic competitions in the country, challenging students to excel in the STEM fields so vital to America’s future,” said U.S. Secretary of Energy Rick Perry. “I am proud to oversee a department that provides such a unique and empowering opportunity for our nation’s students.”

Danielle Davey, a science teacher from Harbor Country Day School, said she was happy that her team placed in the competition. “This was our first year participating in the competition and we’re happy that we took fourth place,” said Davey. “I told my students this is about teamwork and just do your best. We are grateful to Brookhaven Lab for hosting the event and we plan to be back next year!”

Participating students received a Science Bowl T-shirt, and winning teams also received trophies, medals and banners, courtesy of event sponsor Brookhaven Science Associates, the company that manages and operates the lab for DOE.

For more information, visit www.bnl.gov.

Photos courtesy of Brookhaven National Laboratory

Michael Jensen on a container ship in the Pacific Ocean, where he was measuring marine clouds. Photo from M. Jensen

By Daniel Dunaief

They often seem to arrive at the worst possible time, when someone has planned a picnic, a wedding or an important baseball game. In addition to turning the sky darker, convective clouds can bring heavy rains and lightning.

For scientists like Michael Jensen, a meteorologist at Brookhaven National Laboratory, these convective clouds present numerous mysteries, including one he hopes to help solve.

Aerosols, which come from natural sources like trees or from man-made contributors, like cars or energy plants, play an important role in cloud formation. The feedbacks that occur in a cloud system make it difficult to understand how changes in aerosol concentrations, sizes or composition impact the properties of the cloud.

“One of the big controversies in our field is how aerosols impact convection,” Jensen explained in an email. “A lot of people believe that when a storm ingests aerosols, it makes it stronger, because there are changes to precipitation and particles in the clouds.”

This process is called convective invigoration, which could make it rain more.

Another group of scientists, however, believes that the aerosols have a relatively small effect that is masked by other storm processes, such as vertical winds. 

Strong vertical motions that carry air, water and heat through the atmosphere are a signature of convective storms.

Jensen will lead an effort called Tracking Aerosol Convection Interactions Experiment, or TRACER, starting in April of 2021 in Houston that will measure the effect of these aerosols through a region where he expects to see hundreds of convective storm clouds in a year. 

From left, Donna Holdridge, from Argonne National Laboratory; Michael Jensen, kneeling; and Petteri Survo, from Vaisal Oyj in Helsinki, Finland during a campaign in Oklahoma to study convective storms. The team is testing new radiosondes, which are instruments sent on weather balloons. Photo from M. Jensen

The TRACER team, which includes domestic and international collaborators, will measure the clouds, precipitation, aerosol, lighting and atmospheric thermodynamics in considerable detail. The goal of the campaign is to develop a better understanding of the processes that drive convective cloud life cycle and convective-aerosol interactions.

Andrew Vogelmann, a technical co-manager of the Cloud Properties and Processes Group at BNL with Jensen, indicated in an email that the TRACER experiment is “generating a buzz within the community.” 

While other studies have looked at the impact of cities and other aerosol sources on rainfall, the TRACER experiment is different in the details it collects. In addition to collecting data on the total rainfall, researchers will track the storms in real time and will focus on strong updrafts in convection, which should provide specific information about the physics.

Jensen is exploring potential sites to collect data on the amount of water in a cloud, the size of the drops, the phase of the water and the shapes of the particles. He will use radar to provide information on the air velocities within the storm.

He hopes to monitor the differences in cloud characteristics under a variety of aerosol conditions, including those created by industrial, manufacturing and transportation activities.

Even a perfect storm, which starts in an area with few aerosols and travels directly through a region with many, couldn’t and wouldn’t create perfect data.

“In the real atmosphere, there are always complicating factors that make it difficult to isolate specific processes,” Jensen said. To determine the effect of aerosols, he is combining the observations with modeling studies.

Existing models struggle with the timing and strength of convective clouds.

Jensen performed a study in 2011 in Oklahoma that was focused on understanding convective processes, but that didn’t hone in on the aerosol-cloud interactions.

Vogelmann explained that Jensen is “well-respected within the community and is best known for his leadership” of this project, which was a “tremendous success.”

Since that study, measurement capabilities have improved, as has modeling, due to enhanced computing power. During the summer, Long Island has convective clouds that are similar to those Jensen expects to observe in Houston. Weather patterns from the Atlantic Ocean for Long Island and from the Gulf of Mexico for Houston enhance convective development.

“We experience sea breeze circulation,” Jensen said. Aerosols are also coming in from New York City, so many of the same physical processes in Houston occur on Long Island and in the New York area.

As the principal investigator, Jensen will travel to Houston for site selection. The instruments will collect data every day. During the summer, they will have an intensive operational period, where Jensen and other members of the TRACER team will forecast the convective conditions and choose the best days to add cloud tracking and extra observations.

Jensen expects the aerosol impact to be the greatest during the intermediate strength storms. 

The BNL meteorologist described his career as jumping back and forth between deep convective clouds and marine boundary layer clouds.

Jensen is a resident of Centerport and lives with his wife Jacqui a few blocks from where he grew up. Jacqui is a banker for American Community Bank in Commack. The couple has a 22-year-old son Mack, who is a substitute teacher at the Harborfields school district.

Jensen describes his family as “big music people,” adding that he plays euphonium in a few community band groups, including the North Shore Community Band of Longwood and the Riverhead Community Band.

As an undergraduate at SUNY Stony Brook, Jensen was broadly interested in science, including engineering. In flipping through a course catalog, he found a class on atmospheric science and thought he’d try it.

Taught by Robert Cess, who is now a professor emeritus at SBU, the class “hooked” him.

Jensen has been at BNL for almost 15 years. Over that time, he said the team has “more influence in the field,” as the cloud processing group has gone from six to 18 members. The researchers have “expanded our impact in the study of different cloud regimes and developed a wide network of collaborations and connections throughout the globe.”

As for his work in the TRACER study, Jensen hopes to “solve this ongoing debate, or at least provide new insights into the relative role of aerosols and dynamics.”

Third-place winners from Commack High School from left, Luke Maciejewski, Nathan Cheung, Riley Bode, Louis Vigliette and Kevin Chen. Photo from BNL
Commack and Walt Whitman high schools take home honors
Fourth-place winners from Walt Whitman High School in Huntington Station, from left, Rena Shapiro, Eliot Yoon, Matthew Kerner and Aiden Luebker. Photo from BNL

Brookhaven National Laboratory in Upton held its annual Long Island Regional High School Science Bowl on Jan. 26. Out of 20 teams from across Long Island, Levittown’s Island Trees High School took the top spot and was awarded an all-expenses-paid trip to the National Finals in Washington, D.C., scheduled for Apr. 25 to 29. 

Old Westbury’s Wheatley School took home second place; Commack High School placed third; and Walt Whitman High School in Huntington Station placed fourth.

The event was just one of the nation’s regional competitions of the 29th Annual DOE National Science Bowl (NSB). 

A series of 111 regional high school and middle school tournaments are held across the country from January through March. Teams from diverse backgrounds are each made up of four students, one alternate, and a teacher who serves as an adviser and coach. These teams face off in a fast-paced question-and-answer format where they are tested on a range of science disciplines including biology, chemistry, Earth science, physics, energy and math. The NSB draws more than 14,000 middle- and high-school competitors.

“The National Science Bowl has grown into one of the most prestigious and competitive science academic competitions in the country, challenging students to excel in the STEM fields so vital to America’s future,” said U.S. Secretary of Energy Rick Perry. “I am proud to oversee a Department that provides such a unique and empowering opportunity for our nation’s students, and I am honored to congratulate Island Trees High School for advancing to the National Finals, where they will be competing against some of the brightest science, technology and engineering students across the country.”

The top 16 high school teams and the top 16 middle school teams in the National Finals will win $1,000 for their schools’ science departments. Prizes for the top two high school teams for the 2019 NSB will be announced on a later date.

In the competition at Brookhaven Lab, participating students received a Science Bowl T-shirt and winning teams also received trophies, medals and cash awards. Prizes were courtesy of BNL’s event sponsor, Brookhaven Science Associates, the company that manages and operates the lab for DOE.

For more information, visit www.science.energy.gov

Sam Aronson. Photo courtesy of BNL

By Daniel Dunaief

Sam Aronson, the retired head of Brookhaven National Laboratory, has set his sights on a new project far from Long Island.

Teaming up with Acacia Leakey, the project management and engineering consultant of a company called SOSAED and a member of the famed family that has made seminal discoveries about human evolution in Kenya, Aronson would like to stimulate the growth of businesses through the use of solar power that provides products and services.

“This [part of Africa] is an area where there’s really little infrastructure,” Aronson said. “We’re looking to help people get up on the economic pyramid.”

The people Aronson and Leakey would like to help are representative of the one billion people without access to electric power. Two-thirds of them live in sub-Saharan Africa.

Through SOSAED — which stands for Sustainable Off-grid Solutions for African Economic Development — Aronson and Leakey are working with the Turkana Basin Institute of northern Kenya, Stony Brook University, Strathmore University in Nairobi and other Kenyan educational institutions and businesses to integrate business creation in off-grid areas into the larger Kenyan economic ecosystem.

The group would like to create a business model, using local workers and managers, for a range of companies, Leakey explained.

SOSAED plans to start with a small-scale solar-powered clothing production business, which would create affordable clothing for the heat, including skirts, shirts and shorts. SOSAED expects to build this plant adjacent to the TBI research facility.

Ideally, the manufacturer will make the clothing from local material. The clothing business is a pilot project to see whether the model can work for other types of projects in other areas. The Turkana Basin Institute will provide some of the infrastructure, while SOSAED will acquire the equipment and the raw materials and training to do the work.

SOSAED hopes the project will become “self-sustaining when it’s up and running,” Aronson said. “To be sustainable, it has to be the work of local people.” He hopes what will differentiate this effort from other groups’ attempts to build economic development is the commitment to maintenance by people living and working in the area.

“To an extent, the suitability of technology is rarely rigorously considered when humanitarian or generic development projects are implemented,” Leakey explained in an email. “Not only are the skills required for maintenance an important consideration, the availability of spare parts and the motivation and ability to pay for these are also important.”

Developing a system that includes upkeep by people living and working in the area could “make a project move ahead on its own steam,” Aronson said. The area has limited infrastructure, although some of that is changing as new roads and government-funded water projects begin.

Leakey suggested that a long-term project would need extensive participation of the users in every step of the development and implementation. “The project will likely look very different once complete to how we envisage it now, and part of our success (if it comes) will lie in working in a way which allows a great degree of flexibility as it is unlikely we’ll design the ‘right’ system the first time around,” she explained in an email.

In areas with mature systems, Leakey suggested that some organizations had difficulty changing direction, retrofitting existing systems or adapting new technology. New York, she explained, is struggling to adopt sustainable technologies to the extent that it could. “Legislative and physical infrastructure imposes unfortunate roadblocks in the way of clean technologies,” she wrote in an email. “We’re fortunate that with electricity provision we have a fairly blank slate” in Kenya and that the “Kenya government also recognizes the value of off-grid initiatives.”

Leakey appreciates the support TBI played in helping to create SOSAED and is grateful for the ongoing assistance. Through Stony Brook University, SOSAED is beginning to engage business students on economic questions. In the future, the group may also work with engineering students on technological challenges.

“Research may include developing new productive uses of solar power, optimizing the existing system and using the site to rigorously test technologies developed at Stony Brook,” she explained.

Aronson’s initial interest in this project came from his technological connection to Brookhaven National Laboratory, where he retired as the director in 2015. He has been eager to bring new technology to a population he is confident they can help in a “way that makes sense to them and addresses their needs.”

With the support of the Turkana Basin Institute and Stony Brook, Aronson hopes to have a functioning solar hub and factory near TBI that serves a few surrounding villages within the next 18 months. “That’s a very ambitious goal,” he acknowledged. “We’re working in an environment that, because of the history and development, people you’re trying to serve are somewhat skeptical that you’re serious and that you have the staying power to make something that looks like what you’re talking about work.” 

While Aronson and Leakey are continuing to make connections in Kenya with government officials and residents interested in starting businesses, they are searching for ways to make this effort financially viable.

SOSAED is raising money through philanthropic grants and foundations to get the project going. Eventually, they hope to approach venture capital firms who are patient and prepared to invest for the longer term in a number of projects.

After they have an initial example, they will approach other financial backers with more than just a good idea, but with a model they hope will work in other locations.

Aronson lauded the effort and knowledge of Leakey. “We wouldn’t be making much progress right now for a variety of reasons in Kenya if [Leakey] hadn’t come on board,” Aronson said. “I value in the extreme her ability to get the work done.”

SOSAID would like to submit proposals to funding sources that can drive this concept forward.

If this effort takes root, Aronson believes there is a “tremendous market out there.” That would mean this would “become a much bigger organization.”

Francis Alexander. Photo from BNL

By Daniel Dunaief

Now what? It’s a question that affects everyone from the quarterback who wins the Super Bowl — who often says something about visiting a Disney facility — to the student who earns a college degree, to the researcher who has published a paper sharing results with the scientific community.

For some, the path forward is akin to following footsteps in the snow, moving ever closer to a destination for which a path is clear. For others, particularly those developing new technology, looking to unlock mysteries, the path is more like trudging through unfamiliar terrain.

The technology at facilities like Brookhaven National Laboratory, which includes the powerful National Synchrotron Light Source II and the Center for Functional Nanomaterials, among others, enables scientists to see processes at incredibly fine scales.

While these sites offer the promise of providing a greater ability to address questions such as what causes some batteries to die sooner than others, they also cost considerable money to use, putting pressure on researchers to ask the most fruitful question or pursue research that has the greatest chance for success.

Francis Alexander. Photo from BNL

That’s where people like Francis Alexander, the deputy director of Brookhaven National Laboratory’s Computational Science Initiative, and his team at BNL can add considerable value. Alexander takes what researchers have discovered, couples it with other knowledge, and helps guide his fellow laboratory scientists to the next steps in their work — even if he, himself, isn’t conducting these experiments.

“Given our theoretical understanding of what’s going on, as imperfect as that may be, we take that understanding — the theory plus the experimental data — and determine what experiments we should do next,” Alexander said. “That will get us to our goal more quickly with limited resources.”

This approach offers a mutually reinforcing feedback loop between discoveries and interpretations of those discoveries, helping researchers appreciate what their results might show, while directing them toward the next best experiment.

The experiments, in turn, can either reinforce the theory or can challenge previous ideas or results, forcing theoreticians like Alexander to use that data to reconstruct models that take a wide range of information into account.

Alexander is hoping to begin a project in which he works on developing products with specific properties. He plans to apply his knowledge of theoretical physics to polymers that will separate or grow into different structures. “We want to grow a structure with a [particular] function” that has specific properties, he said.

This work is in the early stages in which the first goal is to find the linkage between what is known about some materials and what scientists can extrapolate based on the available experiments and data.

Alexander said the aerospace industry has “models of everything they do.” They run “complex computer simulations [because] they want to know how they’d design something and which design to carry out.”

Alexander is currently the head of a co-design center, ExaLearn, that focuses on exascale, machine-learning technologies. The center is the sixth through the Exascale Computing Project. Growth in the amount of data and computational power is rapidly changing the world of machine learning and artificial intelligence. The applications for this type of technology range from computational and experimental science to engineering and the complex systems that support them.

Ultimately, the exascale project hopes to create a scalable and sustainable software framework for machine learning that links applied math and computer science communities to create designs for learning.

Alexander “brings to machine learning a strong background in science that is often lacking in the field,” Edward Dougherty, a distinguished professor in the Department of Electrical and Computer Engineering at Texas A&M, wrote in an email. He is an “excellent choice to lead the exascale machine learning effort at Brookhaven.”

Alexander is eager to lead an attempt he suggested would advance scientific and national security work at the Department of Energy. “There are eight national laboratories involved and all the labs are on an equal level,” he said. 

One of the goals of the exascale computing project is to build machines capable of 10 to the 18th operations per second. “There’s this enormous investment of DOE” in this project, Alexander said.

Once the project is completely operational, Alexander expects that this work will take about 30 percent of his time. About 20 percent of the time, he’ll spend on other projects, which leaves him with about half of his workweek dedicated to management.

The deputy director recognizes that he will be coordinating an effort that involves numerous scientists accustomed to setting their own agenda.

Dougherty suggested that Alexander’s connections would help ensure his success, adding that he has “established a strong network of contacts in important application areas such as health care and materials.

The national laboratories are akin to players in a professional sporting league. They compete against each other regularly, bidding for projects and working to be the first to make a new discovery. Extending the sports metaphor, members of these labs often collaborate on broad projects, like players on an all-star team competing against similar teams from other nations or continents.

Alexander grew up in Ohio and wound up working at Los Alamos National Laboratory in New Mexico  for over 20 years. He came to BNL in 2017 because he felt he “had the opportunity to build something almost from the ground up.” The program he had been leading at Los Alamos was large and well developed, even as it was still growing. 

The experimental scientists at BNL have been receptive to working with Alexander, which has helped him achieve some of his early goals.

Ultimately, Alexander hopes his work increases the efficiency of numerous basic and applied science efforts. He hopes to help experimental scientists understand “what technologies we should develop that will be feasible” and “what technologies would be most useful to carry experiments out.”