Results 101 to 110 of about 21,299 (296)

Stroke saturation on a MEMS deformable mirror for woofer-tweeter adaptive optics

, 2009
High-contrast imaging of extrasolar planet candidates around a main-sequence star has recently been realized from the ground using current adaptive optics (AO) systems. Advancing such observations will be a task for the Gemini Planet Imager, an upcoming "
Bruce Macintosh, Conan, Conan, Daren Dillon, Donald Gavel, Evans, Evans, Evans, Gavel, Gavel, Hardy, Hudgin, Kalas, Katie Morzinski, Lagrange, Lavigne, Macintosh, Malbet, Marois, Marois, Morzinski, Morzinski, Morzinski, Noll, Norton, Severson, Sommargren, Soummer, Stewart, Thomas, Vogel   +30 more
core   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Self-coherent camera as a focal plane wavefront sensor: simulations

, 2009
Direct detection of exoplanets requires high dynamic range imaging. Coronagraphs could be the solution, but their performance in space is limited by wavefront errors (manufacturing errors on optics, temperature variations, etc.), which create quasi ...
Baudoz, Pierre, Galicher, Raphael, Mas, Marion, Rousset, Gerard, Totems, Julien   +4 more
core   +3 more sources

Nanolayer‐Encapsulated Stretchable Liquid‐Metal Sheets for Thermal Management

Advanced Functional Materials, EarlyView.
A stretchable liquid metal sheet with both high thermal conductivity and mechanical flexibility is developed. Its trilayer structure, comprising copper‐particle‐dispersed gallium liquid metal encapsulated by styrene‐butadiene‐styrene nanosheets, shows 40.4 W m−1 K−1 conductivity, elongation exceeding 200%, and retention of 96% of its initial ...
Daisuke Kuse, Yudai Kaneko, Ryohei Fujita, Tatsuhiro Horii, Daishi Shiojiri, Yuta Ozawa, Kyohei Nagatake, Tamami Takano, Yutaka Isoda, Aoi Koishikawa, Takashi Goto, Ai Ueno, Shoji Maruo, Kazuhide Ueno, Toshinori Fujie, Hosei Nagano, Hiroki Ota   +16 more
wiley   +1 more source

X-ray speckle reduction using a high-speed piezoelectric deformable mirror system

High Power Laser Science and Engineering
An advanced deformable Kirkpatrick–Baez (K-B) mirror system was developed, equipped with high-speed piezoelectric actuators, and designed to induce beam decoherence and significantly enhance the quality of X-ray imaging by minimizing undesirable speckles
Shuai Yan, Hui Jiang, Zhisen Jiang, Dongxu Liang, Jianan Xie, Hai Zhu, Guoyang Shu, Ningyu Ben, Aiguo Li   +8 more
doaj   +1 more source

High-Resolution Imaging in the Visible on Large Ground-Based Telescopes

, 2014
Lucky Imaging combined with a low order adaptive optics system has given the highest resolution images ever taken in the visible or near infrared of faint astronomical objects.
Crass, Jonathan, González-Escélera, Víctor, King, David L., Labadie, Lucas, López, Roberto, Mackay, Craig, Oscoz, Alejandro, Puga, Marta, Pérez-Garrido, Antonio, Pérez-Prieto, Jorge A., Rebolo, Rafael, Rodríguez-Ramos, Luis F., Velasco, Sergio, Villó, Isidro   +13 more
core   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Development of large aperture elements for active and adaptive optics

EPJ Web of Conferences, 2013
Large-aperture elements for laser active and adaptive optics are investigated in collaboration within IOP AcSci CR, FEng CTU and 5M. A bimorph deformable mirror for high-power lasers based on a lightweight structure with a composite core is currently ...
Stranakova E., Jiran L., Nemcova S., Kmetik V., Inneman A.   +4 more
doaj   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

MEMS practice, from the lab to the telescope

, 2012
Micro-electro-mechanical systems (MEMS) technology can provide for deformable mirrors (DMs) with excellent performance within a favorable economy of scale.
Cornelissen, Steven, Dillon, Daren, Evans, Julia Wilhelmson, Gavel, Donald T., Macintosh, Bruce A., Max, Claire E., Morzinski, Katie M., Norton, Andrew P., Reinig, Marc, Reza, Layra, Severson, Scott A.   +10 more
core   +1 more source