News

April, 2019
Tuominen is Featured in National Nanotechnology Podcast

For a special 15th anniversary episode of its podcast series, “Stories from NNI,” the National Nanotechnology Initiative this month features an interview with physics professor Mark Tuominen, associate dean for research and innovation in the College of Natural Sciences and a fellow of the American Physical Society. In the podcast, he reflects on highlights from NNI history and some of its notable accomplishments.

Tuominen, who was instrumental in establishing the National Science Foundation’s (NSF) Center for Hierarchical Manufacturing on campus as well asthe National Nanomanufacturing Network, recalls that he has always enjoyed making things, but it wasn’t until he was a postdoctoral researcher at Harvard that he became involved in nanotechnology, then called mesoscopic physics. He made and measured hundred-nanometer-scale electron tunneling devices known as single-electron transistors which, because of their small size, could control electrons one by one, or two by two if they are superconductors. “Derivatives of these devices are now used as quantum bits or qubits in quantum computing research and development,” he notes.

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February, 2019
Bradley Receives Top Early Career Grant

Laura Bradley, assistant professor of polymer science and engineering, recently was awarded a five-year, $500,000 Faculty Early Career Development (CAREER) Program grant by the National Science Foundation (NSF) that will support her research on producing soft materials with ordered and oriented architectures for advanced applications in membranes and surface coatings.

Soft materials such as liquids, polymers, foams, gels and colloids can be shaped and re-shaped for use in a variety of applications, says Bradley, such as membranes with pores that are vertically oriented, which increases permeability while maintaining selectivity, or what’s allowed to pass and what is not. Commercial membranes currently suffer from low pore densities and high cost, she adds. Her future projects will study the production of scaffolds for biomedical applications such as tissue engineering.

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February, 2019
UMass Amherst Honors College Will Welcome Astronaut Cady Coleman

UMass Amherst alumna and retired NASA astronaut Cady Coleman will deliver the Commonwealth Honors College 2019 Kathryn and Paul Williamson Lecture. Coleman’s free, public talk, “Lessons from Space Lead Straight Back to Earth,” is on Wednesday, Feb. 27, at 5 p.m. in the Honors College events hall.

Established in 2000 by alumni Kathryn and Paul Williamson, this lecture series brings distinguished visitors to the university to interact with Commonwealth Honors College students and present public talks.

Coleman, a former U.S. Air Force colonel, has logged nearly 4,500 hours and 180 days in space as a NASA astronaut. She is a veteran of two space shuttle missions and participated in a six-month tour on the International Space Station. Coleman earned a doctorate in polymer science and engineering from UMass Amherst and a bachelor’s degree in chemistry from the Massachusetts Institute of Technology.

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February, 2019
Emrick, Crosby and Colleagues Create ‘Clean-and-Repair’ Nanotechnology

In this month’s cover story in the journal Advanced Materials, polymer scientists Todd Emrick, Al Crosby and colleagues describe a new approach using liquids for simultaneously cleaning nanoparticle debris from surfaces and depositing that debris into damaged regions of the same surfaces, a process that quickly and efficiently “heals” them.

As Emrick recently told the editor of the “Spotlight” feature for the online nanotechnology news service Nanowerk, “For many types of structural materials, we wish to rapidly detect damage and discover mechanisms to quickly heal those damaged regions. Ideally a detection and repair system would deploy so rapidly that repair would begin before damage becomes severe. Our approach seeks to move in that direction – autonomous, easily deployed, and efficient transport/delivery/healing systems for materials.”

Applications include any type of structural material,from automotive coatings to microfluidic devices to bio-implants, in which one wants rapid healing immediately after damage, he adds.

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January, 2019
UMass Amherst Researchers Offer New Physics Rule to Find Mechanical Strain

Addressing a physics problem that dates back to Galileo, three University of Massachusetts Amherst researchers this week propose a new approach to the theory of how thin sheets can be forced to conform to “geometrically incompatible” shapes – think gift-wrapping a basketball – that relies on weaving together two fundamental ideas of geometry and mechanics that were long thought to be irreconcilable.

Theoretical physicist Benny Davidovitch, polymer scientist Greg Grason and doctoral student Yiwei Sun, writing in Proceedings of the National Academy of Sciences, suggest and demonstrate via numerical simulations that naturally flat sheets forced to change their curvature can accommodate geometrically-required strain by developing microscopic wrinkles that bend the sheet instead of stretching it to the breaking point, a solution that costs less energy, as well.

This advance is important as biotechnologists increasingly attempt to control the level of strain encountered in thin films conforming to complex, curving and 3D shapes of the human body, for example, in flexible and wearable sensors for personalized health monitoring, they explain. Many of these devices rely on electrical properties of the film which is shown to be highly vulnerable to stretching, but which can tolerate some bending.

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January, 2019
UMass Amherst Materials Chemists Tap Body Heat to Power ‘Smart Garments’

Many wearable biosensors, data transmitters and similar tech advances for personalized health monitoring have now been “creatively miniaturized,” says materials chemist Trisha Andrew at the University of Massachusetts Amherst, but they require a lot of energy, and power sources can be bulky and heavy. Now she and her Ph.D. student Linden Allison report that they have developed a fabric that can harvest body heat to power small wearable microelectronics such as activity trackers.

Writing in an early online edition of Advanced Materials Technologies, Andrew and Allison explain that in theory, body heat can produce power by taking advantage of the difference between body temperature and ambient cooler air, a “thermoelectric” effect. Materials with high electrical conductivity and low thermal conductivity can move electrical charge from a warm region toward a cooler one in this way.

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January, 2019
UMass Amherst Enters Master Research Agreement with PPG, Global Leader in Paints, Coatings and Specialty Materials

The University of Massachusetts Amherst has entered into a master research agreement with PPG, a Pittsburgh-based company that is a global leader in paints, coatings and specialty materials.

UMass Amherst and PPG chose to enter the master agreement to streamline and encourage collaboration between PPG and university scientists. Increased collaboration exposes UMass Amherst graduate and undergraduate students to the needs and opportunities at PPG, and it provides PPG with visibility and access to talented students for future hiring demands. The agreement allows for dialogue between faculty with diverse expertise and PPG experts, enhancing the possibilities for collaboration on multiple technology fronts.

PPG will be working initially with faculty researchers in chemical engineering and polymer sciences, says James D. Capistran, former executive director of the UMass Innovation Institute, who negotiated the finalized agreement.

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December, 2018
NSF Supports UMass Amherst Scientists Creating New Discipline

A team of three researchers at the University of Massachusetts Amherst recently was awarded a three-year grant from a new National Science Foundation program to pursue an unusual intersection of their disciplines, which aims to grow an entirely new field, “touch-based bacterial communication,” on their campus and beyond.

Polymer scientist Maria Santore, physicist Mark Tuominen and microbiologist Sloan Siegrist will receive $975,000 from NSF’s new “Convergence Program,” which aims to create new fields of study to address scientific issues by bringing together investigators from disciplines that are somewhat removed from each other, Santore explains.

She says, “Our program’s novelty includes a bridging of soft materials, microbiology, nano-electronics and electrical signaling to determine how bacteria respond to mechanical and electrical signals and how these signals can be exploited to manipulate bacteria. ”

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December, 2018
Russell Elected Fellow of National Academy of Inventors

The National Academy of Inventors (NAI) has elected Thomas P. Russell, Silvio O. Conte Distinguished Professor of polymer science and engineering, to the rank of NAI Fellow. The NAI recognized Russell for demonstrating “a highly prolific spirit of innovation in creating or facilitating outstanding inventions that have made a tangible impact on the quality of life, economic development and welfare of society.” 

He will receive the honor at a fellows induction ceremony April 11at Space Center Houston in Texas, where Andrew H. Hirshfeld, U.S. Commissioner for Patents for the United States Patent and Trademark Office, will provide the keynote address. 

Russell says, “It is most rewarding to be honored for doing what you enjoy doing. Scientific research, pushing the limits and pursuing the unknown, is a joy.”

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November, 2018
Adhesion Society Honors Crosby for Outstanding Achievements in Research

Alfred Crosby, professor of polymer science and engineering, was recently honored with the 2019 Award for Excellence in Adhesion Science sponsored by 3M Company. It is the Adhesion Society’s premier award for outstanding achievements in scientific research relating to adhesion, including “scientific contribution that has significantly improved our understanding of the phenomenon of adhesion, or a contribution to the technology of adhesion or adhesives that has had significant impact on the adhesion/adhesives industry, and a world-wide recognition of that achievement.”

Among other contributions over the past 20 years, Crosby’s research group invented Geckskin, a new adhesive technology made of simple, inexpensive materials including a soft pad integrated into a stiff fabric that can hold up to 700 pounds on a smooth surface such as glass and is reusable. Working with Duncan Irschick, a professor in biology, the team demonstrated that Geckskin adhesive devices are based on key properties of the gecko foot, toe pad, bones and tendons, and translated them into a commercially practical technology.

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