Results 41 to 50 of about 1,364,580 (250)

Electrically Induced Phase Transition and Synaptic Functionality in MoTe2/Graphene Memristors

Advanced Functional Materials, EarlyView.
An electrically induced reversible 2H ↔ 1T′ phase transition is demonstrated in a vertical Au/Ti/MoTe2/graphene memristor with a laterally contacted graphene electrode. Resistive switching proceeds through a compositionally invariant amorphous/2H ↔ amorphous/1T′ transformation, in which a self‐formed amorphous MoTe2 interfacial region is proposed to ...
Chien‐Hua Wang, Mu‐Pai Lee, Jhen‐Dong Tsai, Liang‐Ying Hsieh, Jui‐Yuan Chen, Chun‐Wei Huang, Yen‐Fu Lin, Wen‐Wei Wu   +7 more
wiley   +1 more source

Ultrafast Transient Vibrational Action Spectroscopy of Cryogenically Cooled Ions [PDF]

, 2023
Ultrafast transient vibrational action spectra of cryogenically cooled Re(CO)3(CH3CN)3+ ions are presented. Nonlinear spectra were collected in the time domain by monitoring the photodissociation of a weakly-bound N2 messenger tag as a function of delay ...
Zifan, Ma, Joseph, Fournier, Liangyi, Chen   +2 more
core   +2 more sources

Rapid Microwave Plasma Engineering of HfO2/C@C Core‐Shell Fibrous Membrane Toward Flexible High‐Performance Electromagnetic Wave Absorption

Advanced Functional Materials, EarlyView.
Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding, Limeng Song, Wei Li, Jiangtao Hao, Xuewen Jiang, Mengru Li, Xinglai Yuan, Gang Wang, Yanqiu Zhu, Mi Tian, Hailong Wang, Hongxia Li, Biao Zhao, Rui Zhang, Bingbing Fan   +14 more
wiley   +1 more source

A versatile setup for ultrafast broadband optical spectroscopy of coherent collective modes in strongly correlated quantum systems

Structural Dynamics, 2016
A femtosecond pump-probe setup is described that is optimised for broadband transient reflectivity experiments on solid samples over a wide temperature range.
Edoardo Baldini, Andreas Mann, Simone Borroni, Christopher Arrell, Frank van Mourik, Fabrizio Carbone   +5 more
doaj   +1 more source

Ultrafast X-ray Spectroscopy of Haem Proteins

CHIMIA, 2022
In this article we revisit our recent picosecond and femtosecond X-ray absorption spectroscopy (XAS) and X-ray emission spectroscopy (XES) experiments, probing the ultrafast electronic and geometric evolution of photoexcited haem proteins, namely ...
Camila Bacellar, Majed Chergui
doaj   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

High-sensitivity all-optical ultrafast spectroscopy of cold molecular beams [PDF]

, 2020
Made available in DSpace on 2020-06-26T03:04:39Z (GMT). No. of bitstreams: 2 4647.pdf: 23569 bytes, checksum: cd99ccd5633b9301811b235c866f47cf (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) Previous issue date: 26Time-
Kowzan, Grzegorz
core  

Charge‐Polarized Ni─S4 Single‐Atom Sites Drive Selective Photoreforming of Poly(lactic acid) to Lactate and Hydrogen

Advanced Functional Materials, EarlyView.
Atomically dispersed Ni–S4 sites on CdS nanorods induce interfacial charge polarization, directing photogenerated electrons to H2 evolution and holes to selective ester‐bond cleavage of poly(lactic acid). Without sacrificial reagents, this charge‐coupled system produces lactate while suppressing overoxidation, achieving an H2 evolution rate of 41.74 ...
Yu Yao, Panpan Zhang, Jinqiang Zhang, Xi‐lin Wu, Tara Pukala, Yifei Wang, Bernt Johannessen, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +1 more source

Femtosecond Laser Structuring for Flexible Surface-Enhanced Raman Spectroscopy Substrates

IEEE Photonics Journal, 2021
Surface-enhanced Raman spectroscopy (SERS) is an optical technique for molecule identification. However, fabrication of flexible and structured SERS substrates for performance improvement in a facile and cost-effective manner is challenging. In this work,
Li-Nan Fang, Ji-Chao Li, Jia-Rui Zhang, Dong-Dong Han   +3 more
doaj   +1 more source

THERMAL DENATURATION OF MONOMERIC AND TRIMERIC PHYCOCYANINS STUDIED BY STATIC AND SPECTROSCOPY POLARIZED TIME-RESOLVED FLUORESCENCE [PDF]

, 1984
C-Phycocyanin (PC) and allophycocyanin (APC). as well as the a-subunit of PC. have been isolated from the blue-green alga (cyanobacterium). Spirulina platensis.
John, Wolfhart, Hefferle, P., Scheer, Hugo, H. SCHEER, S. SCHNEIDER, Schneider, Siegfried, W. JOHN, P. HEFFERLE   +7 more
core   +2 more sources