Results 121 to 130 of about 41,136 (294)

Correlated Polymer‐Proton Hopping Enables Water‐Independent Fast Proton Transport in Poly(Ionic Liquid) Membranes

Advanced Science, EarlyView.
A polymer chain in motion: backbone, ring, and counterion dynamics interlock across timescales to relay protons through poly(ionic liquid) membranes. ABSTRACT Polymer electrolyte membranes composed of ionic liquids (IL), capable of conducting protons efficiently at elevated temperatures, without external humidification, could transform fuel cell ...
Keenan Smith, Antonela Gallastegui, Zixuan Yu, Yuliana Pairetti, Andrew Seel, Jacques Ollivier, Victoria Garcia Sakai, Bob C. Schroeder, Maria Forsyth, Aurelie Gueguen, David Mecerreyes, Fabrizia Foglia   +11 more
wiley   +1 more source

Pump-induced stimulated superradiant Smith-Purcell radiation with ultra-narrow linewidth

eLight
Lasers with the gain medium of gas, liquid, semiconductor, and solid could generate coherent light with rather narrow spectral linewidth, which play an important role in the fields of communication, measurement, sensing, and so on. Although free electron
Yuechai Lin, Jinyu Li, Fang Liu, Weisi Meng, Pan Pan, Hanqi Feng, Wei Zhang, Xue Feng, Kaiyu Cui, Jinjun Feng, Yidong Huang   +10 more
doaj   +1 more source

Internal Resonance Mismatch‐Controlled Dissipative Bistability Collapse in Coupled Micromechanical Oscillators

Advanced Science, EarlyView.
This paper reveals internal resonance mismatch‐controlled dissipative bistability collapse in a coupled micromechanical resonator. Tuning δIR changes both internal‐mode amplitude and phase‐dependent feedback. For negative mismatch, Duffing bistability survives.
Jianlin Chen, Xin Zhou, Takashiro Tsukamoto, Nan Wang, Shuji Tanaka   +4 more
wiley   +1 more source

Multifunctional Quantum Sensing Using Single Spins in a van der Waals Crystal

Advanced Science, EarlyView.
The work demonstrates a dual quantum sensing of temperature and magnetic field using spin‐complex quantum emitters in hexagonal boron nitride (hBN). Temperature sensing via zero‐phonon‐line shifts and magnetometry via optically detected magnetic resonances, enable simultaneous local thermometry and magnetic‐field measurements.
James Liddle‐Wesolowski, Konosuke Shimazaki, Jiyun Kim, Benjamin Whitefield, Kenji Watanabe, Takashi Taniguchi, Mehran Kianinia, Igor Aharonovich   +7 more
wiley   +1 more source

Pressure‐Tuned Superconducting Dome and Persistent Charge‐Density‐Wave Order in NdSeTe2

Advanced Science, EarlyView.
NdSeTe2 exhibits an unusual pressure‐tuned phase diagram in which charge‐density‐wave order does not disappear at optimal superconductivity. Instead, Raman spectroscopy reveals a transformation from long‐range to short‐range correlations that remain invisible to resistivity and persist across the entire superconducting dome.
Shuyang Wang, Chao An, Jiaqi Chen, Lili Zhang, Yonghui Zhou, Xuliang Chen, Zhaorong Yang   +6 more
wiley   +1 more source

Phase Noise Power Spectral Density Measurement of Narrow Linewidth CW Lasers Using an Optical Phase-Locked Loop [PDF]

, 2006
Ferrero, Valter, CAMATEL S, Camatel, S.
core   +1 more source

The linewidth of infrared light transitions between the Landau levels in graphene

, 2014
We theoretically propose a structure that the population inversion between the Landau levels (LLs) of the graphene can be achieved by the electrical injection.
Liu, L (刘雷), Xu, K (徐科), Wang, ZW (Wang, Zi-Wu), Li, WP (Li, Wei-Ping)   +3 more
core  

Exceptional Antimodes in Multi‐Drive Cavity Magnonics

Advanced Electronic Materials, EarlyView.
Driven‐dissipative cavity‐magnonics provides a flexible platform for engineering non‐Hermitian physics such as exceptional points. Here, using a four‐port, three‐mode system with controllable microwave interference, antimodes and coherent perfect extinction (CPE) are realized, enabling active tuning to antimode exceptional points.
Mawgan A. Smith, Ryan D. McKenzie, Alban Joseph, Robert L. Stamps, Rair Macêdo   +4 more
wiley   +1 more source

Toward Cell‐Specific Molecular MRI: Modulating Chemical Exchange Saturation Transfer Contrast With Manganese

Angewandte Chemie, EarlyView.
Manganese‐modulated chemical exchange saturation transfer (CEST) MRI, Manga CEST, leverages intracellular Mn2+ uptake to selectively perturb CEST contrast. Comparing Z‐spectra before and after Mn reveals compartment‐specific contributions. In vivo, neuron‐enriched Mn accumulation induces frequency‐dependent attenuation (3–4 ppm), enabling cell‐weighted
Eleonora Cavallari, Valeria Bitonto, Morgana Giachello, Angelo Bifone   +3 more
wiley   +2 more sources

In situ measurement of spectral linewidth in wavelength-modulated signals for frequency-modulated continuous-wave LiDAR systems

AIP Advances
This paper advances an in situ method to measure the spectral linewidth directly from the currently generated wavelength-modulated signals in frequency-modulated continuous-wave (FMCW) light detection and ranging (LiDAR) systems, diverging from ...
Jongpil La, Munhyun Han, Jieun Choi, Bongki Mheen   +3 more
doaj   +1 more source