Results 71 to 80 of about 21,384 (312)

Tuning the optical bandgap in layered hybrid perovskites through variation of alkyl chain length

APL Materials, 2019
Recently, layered hybrid perovskites have been attracting huge interest due to a wide range of possible chemical compositions and the resulting tunability of the materials’ properties.
Jasmina A. Sichert, Annick Hemmerling, Carlos Cardenas-Daw, Alexander S. Urban, Jochen Feldmann   +4 more
doaj   +1 more source

Exchange-mediated magnetic blue-shift of the band-gap energy in the antiferromagnetic semiconductor MnTe

New Journal of Physics, 2020
In magnetic semiconductors the optical spectrum and, in particular, the absorption edge representing the band-gap are strongly affected by the onset of the magnetic order. This contribution to the band-gap energy has hitherto been described theoretically
D Bossini, M Terschanski, F Mertens, G Springholz, A Bonanni, G S Uhrig, M Cinchetti   +6 more
doaj   +1 more source

Geometrically‐Screened, Sterically‐Hindered Additive for Wide‐Temperature Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
A molecular‑engineering strategy combining steric hindrance tuning with geometric optimization identifies cellobiose as an ideal additive for aqueous zinc‑ion batteries, enabling stable Zn deposition across a wide temperature range from −30 to 50 °C. Abstract Aqueous zinc‐ion batteries (AZIBs) are emerging as a highly promising alternative to lithium ...
Sida Zhang, Shengyang Huang, Weigen Chen, Zuyang Hu, Dong Hyun Min, Jun Su Kim, Hao Fu, Young Soo Yun, Won‐Chul Cho, Byung‐Hyun Kim, Baoyu Li, Chengchao Li, Jingyu Sun, Ho Seok Park   +13 more
wiley   +1 more source

Spin torque driven dynamics of a coupled two layer structure: interplay between conservative and dissipative coupling

, 2016
In this manuscript the general concepts of spin wave theory are adapted to the dynamics of a self-polarized system based on two layers coupled via interlayer exchange (conservative coupling) and mutual spin torque (dissipative coupling).
Buda-Prejbeanu, L. D., Ebels, U., Lacoste, B., Romera, M.   +3 more
core   +3 more sources

Enhancing Synaptic Plasticity and Multistate Retention of Organic Neuromorphic Devices Using Anion‐Excessive Gel Electrolyte

Advanced Functional Materials, EarlyView.
Anion‐excessive gel‐based organic synaptic transistors (AEG‐OSTs) that can maintain electrical neutrality are developed to enhance synaptic plasticity and multistate retention. Key improvement is attributed to the maintenance of electrical neutrality in the electrolyte even after electrochemical doping, which reduces the Coulombic force acting on ...
Yousang Won, Jeongwoo Lee, Hyunwook Kim, Joon Hak Oh   +3 more
wiley   +1 more source

Localized High‐Concentration Electrolyte with Water‐Miscible Diluent Enables Stable Zinc Deposition and Long‐Life Aqueous Zinc Metal Batteries

Advanced Functional Materials, EarlyView.
A diisopropyl ether (DIPE)‐based, localized, high‐concentration electrolyte is developed to stabilize both electrodes in aqueous zinc batteries. By reducing water activity and promoting anion‐rich zinc‐ion solvation, it builds robust interphases at both the cathode and anode, ensuring uniform deposition, suppressed corrosion, and highly reversible ...
Yuxuan Wu, Ziwei Zhao, Yue Fei, Hao Zhang, Ge Li   +4 more
wiley   +1 more source

Snow monitoring at strategic locations improves water supply forecasting more than basin-wide mapping

Communications Earth & Environment
In the Western United States, water supply forecasting has traditionally relied on snow water equivalent measurements at ground-based stations due to their strong correlations with streamflow volume during spring and summer.
Mark S. Raleigh, Eric E. Small, Edward H. Bair, Cameron Wobus, Karl Rittger   +4 more
doaj   +1 more source

Center-to-limb variations of the He I 10 830 Å triplet

Astronomy & Astrophysics
We present high-resolution spectroscopic observations of the quiet-Sun center-to-limb variations (CLV) of the He I triplet at 10 830 Å and the nearby Si I 10 827 Å line, observed with GREGOR Infrared Spectrograph (GRIS) and the improved High-resolution ...
Pietrow A. G. M., Kuckein C., Verma M., Denker C., Trelles Arjona J. C., Kamlah R., Poppenhäger K.   +6 more
doaj   +1 more source

Some remarks on a new exotic spacetime for time travel by free fall

, 2018
This work is essentially a review of a new spacetime model with closed causal curves, recently presented in another paper (Class. Quantum Grav. \textbf{35}(16) (2018), 165003).
A Bachelot, A Ori, A Ori, A Tomimatsu, AE Everett, AE Everett, AH Taub, CW Misner, E Newman, F Echeverria, FJ Tipler, FSN Lobo, FSN Lobo, H Ellis, J Friedman, JDE Grant, JL Friedman, JR Gott III, K Gödel, M Alcubierre, MS Morris, MS Morris, RM Wald, RP Kerr, SV Krasnikov, SV Krasnikov, SW Hawking, SW Hawking, WJ Stockum van, Y Soen   +29 more
core   +1 more source

Self‐Hybridized Exciton‐Polariton Photodetectors From Layered Metal‐Organic Chalcogenolates

Advanced Functional Materials, EarlyView.
Self‐hybridized exciton‐polariton photodetectors are demonstrated using high refractive index mithrene, eliminating the need for top mirrors. This simplified architecture enables tunable sub‐bandgap photodetection via lower exciton‐polariton states and enhanced carrier transport through ultrafast polariton group velocities.
Bongjun Choi, Adam D. Alfieri, Wangleong Chen, Deep Jariwala   +3 more
wiley   +1 more source