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Displaying 1 - 25 of 1861

Hydration of a side-chain-free n-type ladder semiconducting polymer driven by electrochemical doping

January 11, 2023
Jiajie Guo, Lucas Flagg, Duyen Tran, Shinya Chen, Ruipeng Li, Nagesh Kolhe, Rajiv Giridharagopal, Samson A. Jenekhe, Lee J. Richter, David Ginger
We study the organic electrochemical transistor (OECTs) performance of the ladder polymer, poly(benzimidazobenzophenanthroline) (BBL) in an attempt to better understand how an apparently insoluble side-chain free polymer is able to operate as an OECT with

Micro- and Nanoscale Surface Analysis of Late Iron Age Glass from Broborg, a Vitrified Swedish Hillfort

January 11, 2023
Jamie Weaver, Bethany Matthews, James Neeway, Lorena Nava Farias, Jose Marcial, Bruce Arey, Jennifer Soltis, LiBor Kovarik, Michael Schweiger, Nathan Canfield, Tamas Varga, Mark Bowden, John McCloy, Eva Hjarthner-Holdar, Rolf Sjoblom, Mia Englund, Erik Ogenhall, Edward Vicenzi, Claire Corkhill, Clare Thorpe, Russell Hand, David Peeler, Carolyn Pearce, Albert Kruger
Archaeological glasses with prolonged exposure to biogeochemical processes in the environment can be used to understand glass alteration, which is important for the safe disposal of vitrified nuclear waste. Samples of mafic and felsic glasses with

Measuring Dimensionality of Cell-Scaffold Contacts of Primary Human Bone Marrow Stromal Cells Cultured on Electrospun Fiber Scaffolds

January 1, 2023
Carl Simon Jr., Peter Bajcsy, Joe Chalfoun, Michael Paul Majurski, Mary C. Brady, Mylene Simon, Nathan Hotaling, Nick Schaub, Allison Horenberg, Piotr Szczypinski, Dongbo Wang, Veronica DeFelice, Soweon Yoon, Stephanie Florczyk
The properties and structure of the cellular microenvironment can influence cell behavior. Sites of cell adhesion to the extracellular matrix (ECM) initiate intracellular signaling that direct cell functions such as proliferation, differentiation and

Mechanism of Bismuth Stimulated Bottom-up Gold Feature Filling

December 30, 2022
Daniel Josell, Trevor Braun, Thomas P. Moffat
The mechanism that underlies 〖Bi〗^(3+)-stimulated extreme bottom-up Au filling of trenches and vias in slightly alkaline 〖Na〗_3 Au(〖SO〗_3 )_2+〖Na〗_2 〖SO〗_3 electrolytes is explored. The remarkable void-free feature filling and self-passivation behavior

Symmetry-dependent ultrafast manipulation of nanoscale magnetic domains

December 23, 2022
Nanna Hagstrom, Rahul Jangid, F. N. U. Meera, Diego Turenne, Jeffrey Brock, Erik Lamb, Boyan Stoychev, Justine Schlappa, Natalia Gerasimova, Benjamin Van Kuiken, Rafael Gort, Laurent Mercadier, Loic Le Guyader, Andrey Samartsev, Andreas Scherz, Giuseppe Mercurio, Hermann Durr, Alexander Reid, Monika Arora, Hans Nembach, Justin Shaw, Emmanuelle Jal, Eric Fullerton, Mark Keller, Roopali Kukreja, Stefano Bonetti, Thomas J. Silva, Ezio Iacocca
Symmetry is a powerful concept in physics, but its applicability to far-from-equilibrium states is still being understood. Recent attention has focused on how far-from-equilibrium states lead to spontaneous symmetry breaking. Conversely, ultrafast optical

Probing Accelerated Salt-Induced Relaxation Dynamics of Laponite Suspensions Using X-Ray Photon Correlation Spectroscopy Measurements and Molecular Dynamics Simulations

December 22, 2022
Sohaib Mohammed, Meishen Liu, Qingteng Zhang, Suresh Narayanan, Fan Zhang, Greeshma Gadikota
Linking the physics of the relaxation behavior of visco-elastic fluids as they form arrested gel states to the underlying nano-scale structure and energetic interactions is essential for developing predictive controls. In this study, laponite suspensions

2D honeycomb transformation into dodecagonal quasicrystals driven by electrostatic forces

December 7, 2022
Sebastian Schenk, Oliver Krahn, Eric J. Cockayne, Holger Meyerheim, Marc de Boissieu, Stefan Foerster, Wolf Widdra
Dodecagonal oxide quasicrystals are well established as examples of long range aperiodic order in two dimensions. However, despite investigations by scanning tunneling microscopy (STM), low-energy electron diffraction (LEED), low-energy electron microscopy

Synthesis, Structure, Te Alloying, and Physical Properties of CuSbS2

October 30, 2022
Dean Hobbis, Kaya Wei, Hsin Wang, Joshua B. Martin, George S. Nolas
Materials with very low thermal conductivities continue to be of interest for a variety of applications. We synthesized CuSbS2 employing a mechanical alloying technique in order to investigate its physical properties. The trigonal pyramid arrangement of

Circular Economy in a High-Tech World

October 18, 2022
Kelsea Schumacher, Martin L. Green
The proliferation of electronics, batteries, and solar panels in recent decades has resulted in a substantial generation of end-of-life (EoL) "high-tech" products. Currently, these products follow a largely linear – extract, make, use, dispose – model, but

Snappy: A New Automated Testing Machine for Monitoring the Break Evolution Process during Single Fiber Fragmentation Test

October 14, 2022
Ami Ahure Powell, Richard Sheridan, Berkay Yucel, Sezen Yucel, Evan Rust, Jeremiah Woodcock, Jeffrey Gilman, Surya R. Kalidindi, Gale A. Holmes
A measurement of interfacial shear strength (IFSS) in fiber reinforced polymer (FRP) materials remains elusive after more than fifty years. This is due in part to the many sources of uncertainty, the time-consuming nature of the measurements, and the large

Density changes in amorphous silicon induced by swift heavy ions

October 4, 2022
Sjoerd Roorda, Amelie Lacroix, Stephanie Codsi, Gabrielle Long, Fan Zhang, Steven Weigand, Christina Trautmann
Pure and gold-doped amorphous silicon membranes were irradiated with swift heavy ions (75 MeV Ag or 1.1 GeV Au ions) and studied by small angle X-ray scattering. The samples that were irradiated with 1.1 GeV Au ions produced a scattering pattern consistent

Towards the Physical Reliability of 3D-Integrated Systems: Broadband Dielectric Spectroscopic (BDS) Studies of Material Evolution and Reliability in Integrated Systems

September 30, 2022
Papa Amoah, Joseph J. Kopanski, Yaw S. Obeng, Christopher Sunday, Chukwudi Okoro, Lin You, Dmirty Veksler
In this paper, we present an overview of our current research focus in developing non-destructive metrology for monitoring reliability issues in 3D-integrated electronic systems. We introduce a suite of non-destructive metrologies that can serve as early

High-Throughput Nanopore Fabrication and Classification Using Xe-Ion Irradiation and Automated Pore-Edge Analysis

September 26, 2022
Michal Macha, Sanjin Marion, Mukesh Tripathi, Martina Lihter, Alex Smolyanitsky, Andras Kis, Aleksandra Radenovic
Large-area nanopore drilling is a major bottleneck in state-of-the-art nanoporous 2D membrane fabrication protocols. In addition, high-quality structural and statistical descriptions of as-fabricated porous membranes are key to predicting the corresponding
Displaying 1 - 25 of 1861