Results 101 to 110 of about 93,610 (302)

Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen

Advanced Functional Materials, EarlyView.
This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann, Christoph Findler, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko   +4 more
wiley   +1 more source

Influence of Nuclear Spin Polarization on Quantum Wire Conductance

, 2004
In this work, we study a possibility to measure the transverse and longitudinal relaxation times of a collection of polarized nuclear spins located in the region of a quantum wire via its conductance. The interplay of an external in-plane magnetic field,
Nesteroff, James A., Pershin, Yuriy V., Privman, Vladimir   +2 more
core   +2 more sources

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

A different view of the quantum Hall plateau-to-plateau transitions

, 1996
We demonstrate experimentally that the transitions between adjacent integer quantum Hall (QH) states are equivalent to a QH-to-insulator transition occurring in the top Landau level, in the presence of an inert background of the other completely filled ...
A. M. Dykhne, B. Huckestien, B. W. Alphenaar, D. C. Tsui, D. Shahar, D. Shahar, D. Shahar, D. Shahar, E. Abrahams, E. Shimshoni, H. P. Wei, H. P. Wei, H. W. Jiang, I. M. Ruzin, I. M. Ruzin, L. P. Rokhinson, L. W. Engel, L. W. Engel, L. W. Wong, M. Shayegan, P. L. McEuen, S. A. Kivelson, S. Koch, S. L. Sondhi, S. L. Sondhi, W. Pan, Y. Huo   +26 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Conductance quantization suppression in the quantum Hall regime

Nature Communications, 2018
Conductance quantization is the hallmark of non-interacting confined systems. The authors show that the quantization in graphene nanoconstrictions with low edge disorder is suppressed in the quantum Hall regime.
José M. Caridad, Stephen R. Power, Mikkel R. Lotz, Artsem A. Shylau, Joachim D. Thomsen, Lene Gammelgaard, Timothy J. Booth, Antti-Pekka Jauho, Peter Bøggild   +8 more
doaj   +1 more source

The role of carbon contamination in metallic nanowires

Materials Research, 2004
Metallic nanowires have attracted much attention in the last years due to new phenomena such as quantum conductance and the existence of unexpected long interatomic distances attaining 0.3-0.5 nm.
Douglas Soares Galvão, Varlei Rodrigues, Daniel Ugarte, Sergio Benites Legoas   +3 more
doaj   +1 more source

Conductance Fluctuations of Open Quantum Dots under Microwave Radiation

, 2001
We develop a time dependent random matrix theory describing the influence of a time-dependent perturbation on mesoscopic conductance fluctuations in open quantum dots.
A. A. Abrikosov, A.G. Aronov, A.G. Huibers, A.G. Huibers, B. L. Altshuler, B. L. Altshuler, B.D. Simons, B.L. Altshuler, B.L. Altshuler, B.L. Altshuler, B.L. Altshuler, C.W.J. Beenakker, E. McCann, H.U. Baranger, I.L. Aleiner, Igor L. Aleiner, L. Onsager, M. Büttikker, M. Büttikker, M.G. Vavilov, M.G. Vavilov, Maxim G. Vavilov, P.A. Lee, P.A. Lee, P.W. Brouwer, P.W. Brouwer, P.W. Brouwer, P.W. Brouwer, V. Falko, V.E. Kravtsov, V.I. Belinicher, V.I. Fal’ko, V.I. Yudson, X.B. Wang   +33 more
core   +1 more source

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

Advanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu, Xi Zheng, Xiufan Liu, Tengyuan Gao, Nicola Pinna, Yu Wang   +5 more
wiley   +1 more source

Electromechanical Properties of Small Transition-Metal Dichalcogenide Nanotubes

Inorganics, 2014
Transition-metal dichalcogenide nanotubes (TMC-NTs) are investigated for their electromechanical properties under applied tensile strain using density functional-based methods.
Nourdine Zibouche, Mahdi Ghorbani-Asl, Thomas Heine, Agnieszka Kuc   +3 more
doaj   +1 more source