Results 131 to 140 of about 5,111 (331)

Liquid crystal devices in adaptive optics [PDF]

, 1999
Large aperture astronomical telescopes have a resolution that is limited by the effects of the Earth's atmosphere. The atmosphere causes incoming wavefronts to become aberrated, to correct for this adaptive optics is employed.
Birch, P.M., Birch, Philip Michael
core  

Atomically Modulating Competing Exchange Interactions in Centrosymmetric Skyrmion Hosts GdRu2X2 (X = Si and Ge)

Advanced Electronic Materials, EarlyView.
Our work bridges the gap between skyrmion discovery and material design by demonstrating how atomic‐scale control of exchange interactions enables tunable skyrmion phase transitions in centrosymmetric magnetic metals. ABSTRACT Magnetic skyrmions are topologically protected spin states that hold promise for shaping the future of electronics.
Dasuni N. Rathnaweera, Xudong Huai, K. Ramesh Kumar, Michał J. Winiarski, Tomasz Klimczuk, Allana G. Iwanicki, Satya K. Kushwaha, Martin Mourigal, Tyrel M. McQueen, Thao T. Tran   +9 more
wiley   +1 more source

Lightweight and High-Resolution Astronomical X-Ray Optics Using Single Crystal Silicon [PDF]

, 2016
Lightweight and high-resolution astronomical x-ray optics using single crystal ...
O'Dell, S. L., Gaskin, J. A., Biskach, M. P., Kolodziejczak, J. J., Carter, J. M., Zhang, William W., Allgood, K. D., Chan, K. W., Jones, W. D., Saha, T. T., Olsen, L. G.   +10 more
core   +1 more source

Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers

High Power Laser Science and Engineering
Traditional wavefront control in high-energy, high-intensity laser systems usually lacks real-time capability, failing to address dynamic aberrations.
J. B. Ohland, N. Lebas, V. Deo, O. Guyon, F. Mathieu, P. Audebert, D. Papadopoulos   +6 more
doaj   +1 more source

Optimization of electrode geometry and piezoelectric layer thickness of a deformable mirror

EPJ Web of Conferences, 2013
Deformable mirrors are the most commonly used wavefront correctors in adaptive optics systems. Nowadays, many applications of adaptive optics to astronomical telescopes, high power laser systems, and similar fast response optical devices require large ...
Nováková Kateřina, Kruchenko Alexey V., Mokrý Pavel   +2 more
doaj   +1 more source

Next generation astronomical x-ray optics: high angular resolution, light weight, and low production cost [PDF]

, 2012
W. W. Zhang, Michael P. Biskach, Peter Blake, K. W. Chan, Jessica A. Gaskin, Mao-Ling Hong, W. D. Jones, Linette D. Kolos, J. M. Mazzarella, Ryan S. McClelland, Stephen L. O’Dell, Timo T. Saha, Marton V. Sharpe   +12 more
openalex   +1 more source

Photoresponse Properties of Ambipolar Transport in WSe2 Field‐Effect Transistors

Advanced Electronic Materials, EarlyView.
This study explores the photoresponse of WSe2 ambipolar field‐effect transistors, which exhibit unipolar, saturation, and ambipolar transport regions. Light illumination induces a shift of critical voltage with enhanced photocurrent generation driven by the photogating effect without the material degradation seen in avalanche photodetectors. This study
Jongeun Yoo, Seongmin Ko, Sunggyu Ryoo, Jaehyoung Park, Jaeyoung Kim, Juntae Jang, Jinwoo Sim, Donguk Kim, SeungNam Cha, Chongwu Zhou, Kyungjune Cho, Takhee Lee   +11 more
wiley   +1 more source

Compensation of Atmospheric Turbulence Phase Distortion Using Neural Network Adaptive Optics

Iraqi Journal of Physics
Adaptive optics revolutionizes telescopic resolution but faces cost, complexity, and calibration hurdles. Neural network adaptive optics (NNAO) offers promise by using neural networks to tailor corrections to telescopes and atmospheric conditions, by ...
Raaid Nawfee Hassan
doaj   +1 more source

Low‐Power Control Of Resistance Switching Transitions in First‐Order Memristors

Advanced Electronic Materials, EarlyView.
Joule losses are a serious concern in modern integrated circuit design. In this regard, minimizing the energy necessary for programming memristors should be handled with care. This manuscript presents an optimal control framework, allowing to derive energy‐efficient programming voltage protocols for resistance switching devices. Following this approach,
Valeriy A. Slipko, Alon Ascoli, Fernando Corinto, Yuriy V. Pershin   +3 more
wiley   +1 more source

Review for optical metalens based on metasurfaces: fabrication and applications

Microsystems & Nanoengineering
Metalens is the next generation of optical metasurfaces for compact imaging, sensing, and display applications that allow the phase, polarization, frequency, amplitude, angular momentum, etc.
Zhikai Hu, Manna Gu, Ying Tian, Chenxia Li, Mingmin Zhu, Haomiao Zhou, Bo Fang, Zhi Hong, Xufeng Jing   +8 more
doaj   +1 more source