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Search Publications

NIST Authors in Bold

Displaying 26 - 50 of 1941

Evaluating Contaminant Effects and Blend Ratios on the Alkaline Hydrolysis of PET Textile Streams

September 5, 2025
Author(s)
McKenzie Coughlin, Thomas Forbes, Zois Tsinas, Amanda Forster, Charlotte Wentz, Maxwell Mevorah, allison carranza, Amy Engelbrecht-Wiggans
The increasing amounts of discarded textiles represent a potentially valuable resource that could be reclaimed, for example, by chemical techniques. This work underscores the significance of advancing chemical recycling techniques for multi-component

Material Needs and Measurement Challenges for Advanced Semiconductor Packaging: Understanding the Soft Side of Science

August 27, 2025
Author(s)
Ran Tao, Polette Centellas, Stian Romberg, Anthony Kotula, Gale Holmes, Amanda Forster, Christopher Soles, Bob Allen, Edvin Cetegen, William Chen, Jeff Gotro, Mark Poliks
This perspective builds upon insights from the National Institute of Standards and Technology (NIST)-organized workshop, "Materials and Metrology Needs for Advanced Semiconductor Packaging Strategies," held at the 35th annual Electronics Packaging

Effect of Ionic Liquids on the Structure of Ionomer Inks

July 28, 2025
Author(s)
Tyler Martin, Kimber Stamm Masias
This study investigates the impact of ionic liquids (ILs) on the structure and performance of catalyst inks used in proton exchange membrane fuel cells (PEMFCs). Using contrast variation small-angle neutron scattering (CV-SANS), we elucidate the structural

Advanced Metrology Suite for Linking Residual Stress to Fundamental Properties of Thermoset Packaging Materials

June 26, 2025
Author(s)
Polette Centellas, Stian Romberg, Ran Tao, Alexander Landauer, Karl Schoch, Huong Giang Nguyen, Gale Holmes, Gery Stafford, Christopher Soles
Residual stresses inevitably develop in thermosetting materials used for semiconductor packaging during the curing process and in service. Understanding the development of these deleterious stresses is necessary for improving predictive models and

Enabling data-driven design of block copolymer self-assembly

June 21, 2025
Author(s)
Chiara Magosso, Irdi Murataj, Michele Perego, Gabriele Seguini, Debra Audus, Gianluca Milano, Federico Ferrarese Lupi
Abstract Here we present a database composed of scanning electron microscope images of self-assembled block copolymers. The fabrication process parameters, structural properties and microscope information are all contained in the image metadata, making a

An Autonomous Agent for Soft Material Structural Optimization and Discovery

June 6, 2025
Author(s)
Tyler Martin, Austin McDannald, Aaron Kusne, Peter Beaucage
The pace of formulation (re)development and design is rapidly increasing as both consumers and new legislation demand products that do less harm to the environment while maintaining high standards of performance. To meet this need, we have developed an

Controlling Impact Mitigation via Stimuli-Responsive Bouligand Nanostructures

May 16, 2025
Author(s)
Sujin Lee, Katherine Evans, Jeremiah Woodcock, Jan Obrzut, Liping Huang, Christopher Soles, Edwin Chan
Critical to their survival, natural organisms have developed exoskeletons that can withstand and inflict damage over their lifetime. The Bouligand structure of the exoskeleton plays a key role in toughness and damage resistance under external impacts

Sterilizable Vertical n-Type Organic Electrochemical Transistors for Skin-conformal ECG Monitoring

May 6, 2025
Author(s)
Ji Hwan Kim, Inho Lee, Won-June Lee, Dongjoon Shin, Hyeongbeom Lee, Lucas Flagg, Jagrity Chaudhary, Liyan You, Keehoon Kang, Jianguo Mei, Sungjun Park
The development of stable, high-performance epidermal biosignal monitoring devices is critical for advancing wearable healthcare technologies. Here, we present a novel electrochemical transistor-based biosignal sensor utilizing a 4-terminal vertical

Multistage Networks for Glassy Holographic Photopolymers

April 29, 2025
Author(s)
Alexander Osterbaan, Andrew Sias, Marianela Trujillo-Lemon, Kieran Fung, Jason Killgore, ROBERT MCLEOD, Christopher Bowman
In the writing of holographic photopolymers, the addition of a third stage cure to the typical polyurethane matrix and acrylate writing monomer steps is used here to modify the ultimate thermomechanical properties of the final holographic photopolymer

Bridging the Impact Response of Polymers from the Nanoscale to the Macroscale

April 18, 2025
Author(s)
Kyle Callahan, Katherine Evans, Santanu Kundu, Edwin Chan
Impact from a fast-moving object is a common event, but it can vary greatly in terms of scale, speed, and energy depending on the specific case. Recent research has suggested that scaling analysis can be used to relate the impact performance of materials

Controlling Doping Levels of n-PBDF Through Chemical Dedoping and Doping

April 15, 2025
Author(s)
Zhifan Ke, Lucas Flagg, Dean DeLongchamp, jianguo mei
Doping levels of conjugated polymers determine their conductivity, energetics, and optical properties. The recent discovery of highly conductive n-doped Poly (3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dione) (n-PBDF) has opened new possibilities for n-type

The Role of Side Chains and Hydration on Mixed Charge Transport in n-type Polymer Films

March 30, 2025
Author(s)
Lucas Flagg, Lee Richter, Jokubas Surgailis, Victor Druet, Sophie Griggs, Xiaocui Wu, Stefania Moro, David Ohayon, Christina Kousseff, Adam Marks, Iuliana Petruta Maria, Hu Chen, Maximilian Moser, Giovanni Costantini, Iain McCulloch, Sahika inal
Introducing polar ethylene glycol (EG) side chains to a conjugated polymer backbone is a well-established synthetic strategy to design organic mixed ion-electron conductors (OMIECs). However, the impact that film swelling has on mixed conduction properties

Marine debris impacts on Hawaiian green sea turtles (Chelonia mydas): High prevalence of hook-and-line fishing gear in strandings

March 29, 2025
Author(s)
Marthe Hoiberg, Jan Borgelt, Philip Mostert, Shawn Murakawa, Summer Martin, Jon Gelman, Jennifer Lynch, Francesca Verones
Stranding data are critical for monitoring threats to sea turtles. By analyzing four decades of green turtle (Chelonia mydas) strandings from the Main Hawaiian Islands, we elucidate temporal and spatial trends. In Hawai'i, fibropapillomatosis (FP) has been

Rheology and Microstructural Behavior of Semidilute Suspensions of Semiflexible Rods across Five Decades of Shear Rate

February 18, 2025
Author(s)
Paul Salipante, Ryan Murphy, Steve Kuei, Jeffrey Fagan, Christopher Sims, Kathleen Weigandt, Steven Hudson
Rod-like particles are efficient rheology modifiers and are commonly found in a variety of biological and industrially relevant suspensions, from biofilaments to worm-like surfactant micelles. These suspensions display strong shear-thinning behavior, and
Displaying 26 - 50 of 1941
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