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Displaying 501 - 525 of 2122

Solution Structure of Zinc-Seamed C-alkylpyrogallol[4]arene Dimeric Nanocapsules

January 15, 2021
Author(s)
Harshita Kumari, Wei G. Wycoff, Collin M. Mayhan, Steven R. Kline, Joshua R. So, Carol A. Deakyne, John E. Adams, Jerry L. Atwood
The structural stability and solution geometry of zinc-seamed C-propylpyrogallol[4]arene dimers with ligands has been studied in solution using in situ neutron scattering and 2D-DOSY NMR 15 methods. In comparison with the structures of the analogous copper

Off-stoichiometric semiconductors Cu1.33+xZn1.33-xIn1.33Se4 (x = 0, 0.1, 0.2 and 0.3): Synthesis, structure, and thermal and electrical properties

January 12, 2021
Author(s)
Alzahrani Noha, Hagen Poddig, Hsin Wang, Joshua B. Martin, Wencong Shi, Lilia M. Woods, George S. Nolas
The synthesis, structure, and temperature dependent thermal and electrical properties of off-stoichiometric polycrystalline modified zinc blende quaternary chalcogenides Cu1.33+xZn1.33-xIn1.33Se4, where x ​= ​0, 0.1, 0.2 and 0.3, are investigated

Observation of Anti-Damping Spin-Orbit Torques Generated by In-Plane and Out-of-Plane Spin Polarizations in MnPd 3

December 16, 2020
Author(s)
Mahendra DC, Ding-Fu Shao, Vincent D.-H. Hou, Patrick Quarterman, Ali Habiboglu, Brooks Venuti, Masashi Miura, Brian Kirby, Arturas Vailionis, Chong Bi, Xiang Li, Fen Xue, Yen-Lin Huang, Yong Deng, Shy-Jay Lin, Wilman Tsai, Serena Eley, Weigang Wang, Julie A. Borchers, Evgeny Y. Tsymbal, Shan X. Wang
High spin-orbit torques (SOTs) generated by topological materials and heavy metals interfaced with a ferromagnetic layer show promise for next generation magnetic memory and logic devices. SOTs generated from the in-plane spin polarization along y-axis

Multiscale Microstructure, Composition, and Stability of Surfactant/Polymer Foams

December 8, 2020
Author(s)
Stefania Perticaroli, Jana Herzberger, Yiping Sun, Jonathan D. Nickels, Ryan Murphy, Kathleen Weigandt, Paula J. Ray
Foam stability is a critical part of product performance and consumer experience in materials as diverse as beer or detergents. Inclusion of polymer additives is a known strategy to improve foam stability, but questions persist about the amount of polymer

Exchange Bias Switching in an Antiferromagnet/Ferromagnet Bilayer Driven by Spin-Orbit Torque

December 1, 2020
Author(s)
Shouzhong Peng, Daoqian Zhu, Weixiang Li, Hao Wu, Alexander Grutter, Dustin A. Gilbert, Jiaqi Lu, Danrong Xiong, Wenlong Cai, Padraic Shafer, Kang L. Wang, Weisheng Zhao
Electrical manipulation of exchange bias and magnetization in antiferromagnet/ferromagnet thin films has been of great interest in recent years. Here, we experimentally demonstrate current-induced switching of exchange bias in perpendicularly magnetized

Strain-Induced Creation and Switching of Anion Vacancy Layers in Perovskite Oxynitrides

November 23, 2020
Author(s)
Takafumi Yamamoto, Akira Chikamatsu, Shunsaku Kitagawa, Nana Izumo, Shunsuke Yamashita, Hiroshi Takatsu, Masayuki Ochi, Takahiro Maryuama, Morito Namba, Wenhao Sun, Takahide Nakashima, Fumitaka Takeiri, Kotaro Fujii, Masatomo Yashima, Yuki Sugisawa, Masahito Sano, Yashushi Hirose, Daiichiro Sekiba, Craig Brown, Takashi Honda, Kazutaka Ikeda, Toshiya Otomo, Kazuhiko Kuroki, Kenji Ishida, Takao Mori, Koji Kimoto, Tetsuya Hasegawa, Hiroshi Kageyama
Perovskite oxides, ABO 3, can host a variety of anion vacancies in the form of chains or layers, which results in various properties 1-3 and thus the manipulation of vacancy patterns is of considerable interest. Separately, lattice strain between thin-film

EFFECTS OF PRE-STRAIN ON THE NON-LINEAR VISCOELASTIC PROPERTIES OF A MODEL SEALANT

November 18, 2020
Author(s)
Christopher C. White, Donald L. Hunston, Kar tean Tan
The non-linear viscoelastic properties of a model sealant were measured using stress relaxation tests conducted at different strain levels, x. Some specimens were measured with no previous strain history while others were given a preconditioning that

Multiphase Magnetism in Yb 2 Ti 2 O 7

November 3, 2020
Author(s)
Allen Scheie, Jonas Kindervater, Shu Zhang, Hitesh Changlani, G. Sala, Georg Ehlers, Andre Heinemann, Gregory Tucker, Seyed Koohpayeh, Collin L. Broholm

Materials Research & Measurement Needs for Ceramics Additive Manufacturing

November 1, 2020
Author(s)
Andrew J. Allen, Igor Levin, Suzanne E. Witt
We report on a recent workshop dedicated to additive manufacturing (AM) of ceramics that was held at the National Institute of Standards and Technology (NIST) in November 2019. This two- day all-invited meeting brought together experts from industry

Correlation of Nano-morphology with Structural and Spectroscopic Studies in Organic Solar Cells

October 27, 2020
Author(s)
Eliot Gann, Christopher McNeill, Wenchao Huang, Dinesh Kabra, Urvashi Bothra, Nakul Jain, Amelia C. Liu
The nano-morphology of bulk heterojunction blends based on poly[[4,8-bis[(2- ethylhexyl)oxy]benzo[1,2-b:4,5- b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7) blended with [6,6]- phenyl-C71-butyric acid methyl

Reduction of charge offset drift using plasma oxidized aluminum in SETs

October 26, 2020
Author(s)
Yanxue Hong, Ryan Stein, Michael Stewart, Neil M. Zimmerman, Joshua M. Pomeroy
Aluminum oxide (AlOx)-based single-electron transistors (SETs) fabricated in ultra-high vacuum (UHV) chambers using in situ plasma oxidation show excellent stabilities over more than a week, enabling applications as tunnel barriers, capacitor dielectrics

Semiconducting to Metallic Electronic Landscapes in Defects Controlled Two-Dimensional ?-d Conjugated Coordination Polymer Thin Films

October 16, 2020
Author(s)
Cherno Jaye, Daniel A. Fischer, Jonathan Ogle, Nabajit Lahiri, Christopher Tassone, Janis Louie, Luisa Whittaker-Brooks
Two-dimensional coordination polymers (2D CPs) are of significant interest due to their intriguing structural, optical, and electrical properties which can be tuned through the selective coordination of different metals and organic linkers. Although, 2D

Structural Properties of Kerogens with Different Maturities

October 15, 2020
Author(s)
Wei-Shan Chiang, Jin-hong Chen, David Jacobi, Taner N. Yildirim
The thermogenic transformation of kerogen into hydrocarbons accompanies the development of a pore network within the kerogen that serves as gas storage locations both in pore space and surface area for adsorbed gas within the source rock. Therefore, the

Dynamics of Hydroxyl Anions Promotes Lithium Ion Conduction in Antiperovskite Li 2 OHCl

October 13, 2020
Author(s)
Fei Wang, Hayden Evans, Kwangnam Kim, Liang Yin, Yiliang Li, Ping-Chun Tsai, Jue Liu, Saul H. Lapidus, Craig Brown, Donald J. Siegel, Yet-Ming Chiang
Li 2OHCl is an exemplar of the anti-perovskite family of ionic conductors, for which high ionic conductivities have been reported, but in which the atomic-level mechanism of ion migration is unclear. The stable phase is highly defective, having 1/3 of the

Position-Dependent Diffusion Dynamics of Entangled Polymer Melts Nanoconfined by Parallel Immiscible Polymer Films

October 9, 2020
Author(s)
Kyong-Il Jo, Yonghoon Oh, Tae-Ho Kim, Joona Bang, Guangcui Yuan, Sushil K. Satija, Bong J. Sung, Jaseung Koo
The morphological structure and dynamics of confined polymers adjacent to the polymer–polymer interface have a profound effect on determining the overall physical properties of polymer blends. We measured the diffusion dynamics of polymethylmethacrylate

Porous Organic Cages as Synthetic Water Channels

September 30, 2020
Author(s)
Yi D. Yuan, Jinqiao Dong, Jie Liu, Daohui Zhao, Hui Wu, Wei Zhou, Hui X. Gan, Yen W. Tong, Jianwen Jiang, Dan Zhao
Nature has protein channels (e.g., aquaporins) that preferentially transport water molecules while rejecting even the smallest hydrated ions. Aspirations to create robust synthetic counterparts have led to the development of a few one-dimensional (1D)
Displaying 501 - 525 of 2122