Results 61 to 70 of about 409,083 (217)

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Time-domain Brillouin scattering assisted by diffraction gratings [PDF]

, 2017
Absorption of ultrashort laser pulses in a metallic grating deposited on a transparent sample launches coherent compression/dilatation acoustic pulses in directions of different orders of acoustic diffraction. Their propagation is detected by the delayed
Chaban, Ievgeniia, Fujita, Kentaro, Gusev, Vitalyi, Matsuda, Osamu, Pezeril, Thomas   +4 more
core   +3 more sources

GHz-range resonant ultrasound spectroscopy for a free-standing nano film studied by picosecond ultrasonics

Applied Physics Express, 2019
Progress in the wireless communication requires higher frequency bandpass filters, and the bulk acoustic-wave filter is especially the key device for the GHz-range communication.
A. Nagakubo, Kanta Adachi, T. Nishihara, H. Ogi   +3 more
semanticscholar   +1 more source

The Dynamics of Interfacial Trap States in High‐Detectivity Near‐Infrared Photomultiplication Organic Photodetectors

Advanced Functional Materials, EarlyView.
Photomultiplication organic photodetectors (PM OPDs) are an attractive strategy for health‐monitoring. Here, PM‐OPDs are reported with a specific detectivity of 5.7 × 1012 Jones and external quantum efficiency values of 3500% under −10 V. The dynamics of carrier trapping in these devices are elucidated through trap selective spectroscopical techniques.
Marie Houot, Zhuoran Qiao, Beier Hu, Davide Nodari, Francesco Furlan, Filip Aniés, Yicheng Yang, Martin Heeney, Artem A. Bakulin, Nicola Gasparini   +9 more
wiley   +1 more source

Double-Sided Terahertz Imaging of Multilayered Glass Fiber-Reinforced Polymer

Applied Sciences, 2017
Polymer matrix composites (PMC) play important roles in modern industry. Increasing the number of such structures in aerospace, construction, and automotive applications enforces continuous monitoring of their condition.
Przemyslaw Lopato
doaj   +1 more source

Elastic Models for the Non-Arrhenius Relaxation Time of Glass-Forming Liquids [PDF]

, 2006
We first review the phenomenology of viscous liquids and the standard models used for explaining the non-Arrhenius average relaxation time. Then the focus is turned to the so-called elastic models, arguing that these models are all equivalent in the ...
Dyre, Jeppe C.
core   +2 more sources

Spatiotemporal Plasma–Mediated Laser Fabrication of Ultrahigh‐Aspect‐Ratio Nanochannel Arrays for Vertical Perovskite Nanowire Semiconductor Devices

Advanced Functional Materials, EarlyView.
A spatiotemporal plasma–mediated laser processing approach is developed to fabricate ultrahigh–aspect ratio nanochannel arrays and corresponding perovskite nanowire arrays within transparent materials for optoelectronics devices. The laser‐fabricated nanochannels serve as templates for controlled perovskite infiltration and crystallization, enabling ...
Taijin Wang, Lingfeng Wang, Feng Liu, Gary J. Cheng   +3 more
wiley   +1 more source

High-frequency acousto-optic effects in Bragg reflectors [PDF]

, 2014
Picosecond acoustic interferometry was used to study the acousto-optic properties of a distributed Bragg reflector (DBR) manufactured from two immiscible polymers (cellulose acetate and polyvinylcarbyzole). Picosecond strain pulses were injected into the
A. J. Kent, A. V. Akimov, Akimov, Arcizet, Bailey, Beugnot, Brüggemann, Chan, Cheng, Colvard, D. J. Farmer, Dainese, Ding, Fainstein, Gorishnyy, Groenen, Grudinin, Gröblacher, Hao, J. Bailey, J. S. Sharp, Jusserand, Katsidis, Lin, Lin, Léger, Mahboob, Maldovan, Matsuda, Matsuda, Morath, N. A. Gippius, Pennec, Safavi-Naeini, Salasyuk, Tas, Teufel, Thomsen, Walker, Weis, Wiederhecker, Wright, Wright, Zhang   +43 more
core   +2 more sources

Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications

Advanced Materials, EarlyView.
This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li, Yanran Liu, Jinjin Liu, Josephine Si Yu See, Kaijian Xing, Dong‐Chen Qi, Xiao Renshaw Wang   +6 more
wiley   +1 more source

Direct Observation of Propagating Gigahertz Coherent Guided Acoustic Phonons in Free Standing Single Copper Nanowires

, 2014
We report on gigahertz acoustic phonon waveguiding in free-standing single copper nanowires studied by femtosecond transient reflectivity measurements.
Amziane A., Bannov N., Belliard L., Bernard Perrin, Bienville T., Boukai A. I., Burgin J., Cardinal M. F., Chang D. E., Chree C., Cyril Jean, Feng X. L., Hirsch L. R., Huang X., Jais P. M., Juvé V., Kelf T. A., Khelfa H., Laurent Belliard, Ledbetter H., Liang H., Lin K.-H., Loïc Becerra, Maier S. A., Major T. A., Major T. A., Mante P.-A., Marco Cassinelli, Maria Eugenia Toimil-Molares, Mingo N., Molares M. T., Mounier D., Novo C., Olivier Thomas, Pochhammer L., Ristow O., Royer D., Silk M., Siry P., Staleva H., Staleva H., Staleva H., Thomas W. Cornelius, Thomsen C., van Dijk M., Vertikov A., Zijlstra P.   +46 more
core   +2 more sources