Results 101 to 110 of about 21,155 (296)

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

Mechanochromism of Glassy Polymers Enabled by a Loop‐Forming Supramolecular Mechanophore

Advanced Functional Materials, EarlyView.
The supramolecular mechanophore LOOP is covalently introduced into glassy polymers, capable of reporting force‐induced pre‐failure damage and local fracture events in polymer glasses. Under different mechanical deformation modes, including grinding, tensile stretching, and scratching, LOOP probes irreversible events in polymer glasses through a ...
Linlin Deng, Chantal Graafsma, Felix Meyenhofer, Iulia Scarlat, Luca Bertossi, Christoph Weder, Jess M. Clough   +6 more
wiley   +1 more source

Tailoring K+/Vacancy Disordered Layered Oxide via Charge Engineering for Stabilizing High‐Performance Potassium‐Ion Batteries

Advanced Functional Materials, EarlyView.
With a charge‐ion coupling engineering strategy, a K+/vacancy disordered K0.5Mn0.8Co0.1Ti0.1O2 material has been designed. The targeted transition metal doping disrupts charge ordering and inducing K+/vacancy disordering, thereby enabling rapid K+ diffusion through interconnected channels and a stable solid‐solution reaction mechanism.
Yongfeng Jia, Xuanpeng Wang, Jiashen Meng, Lujun Zhu, Fanjie Xia, Hong Wang, Fang Liu, Xiao Zhang, Quanquan Pang, Jian Wang, Zhitong Xiao   +10 more
wiley   +1 more source

High-contrast Imaging from Space: Speckle Nulling in a Low Aberration Regime

, 2005
High-contrast imaging from space must overcome two major noise sources to successfully detect a terrestrial planet angularly close to its parent star: photon noise from diffracted star light, and speckle noise from star light scattered by instrumentally ...
Krist J., Labeyrie A., Lofdahl M., Pascal J. Borde, Wesley A. Traub   +4 more
core   +1 more source

A Multi-Deformable-Mirror 500 Hz Adaptive Optical System for Atmospheric Turbulence Simulation, Real-Time Reconstruction, and Wavefront Correction Using Bimorph and Tip-Tilt Correctors

Photonics
Atmospheric turbulence introduces distortions to the wavefront of propagating optical radiation. It causes image resolution degradation in astronomical telescopes and significantly reduces the power density of radiation on the target in focusing ...
Ilya Galaktionov, Vladimir Toporovsky
doaj   +1 more source

Where Most Frameworks Degrade: Flexible Bimetallic Phosphonate Crystals as pH‐Universal Supercapacitor Electrodes

Advanced Functional Materials, EarlyView.
Plastically flexible single crystals of the bimetallic phosphonate framework [Cu(2,2′‐bpy)VO(O3PC6H5)2] combine mechanical adaptability with robust pseudocapacitive charge storage. The material delivers about 140 Fg−1 at pH 4 and pH 10 and remains stable across pH 2‐12, enabling energy storage under comparatively mild electrolyte conditions.
Tim Müller, Jean G. A. Ruthes, Biswajit Battacharya, Dorothee Silbernagl, Patrik Tholen, Aysenur Limon, Gülsüm Kinik, Christoph Janiak, Markus Suta, Franziska Emmerling, Volker Presser, Gündoğ Yücesan   +11 more
wiley   +1 more source

Investigation of Halogen Substitution Effects in π‐Conjugated Organic Ligands of Chiral Hybrid Perovskites on Their Chiroptical Activity

Advanced Functional Materials, EarlyView.
The role of novel thiophene‐based ligands with halogen substitutions in enhancing the chiroptical and optoelectronic properties of 2D chiral HOIPs has been investigated. By tailoring ligand design, enhanced CD and CPL properties are achieved, with improved CPL discrimination in photodetectors.
Boesung Kwon, Doyeong Yeo, In‐Chul Hwang, In Hwan Jung, Joon Hak Oh   +4 more
wiley   +1 more source

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

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

SPICA infrared coronagraph for the direct observation of exo-planets

, 2010
We present a MIR coronagraph to target the direct observation of extrasolar planets for SPICA, in which a coronagraph is currently regarded as an option of the focal plane instruments. The primary target of the SPICA coronagraph is the direct observation
Abe, Abe, Aime, Aime, Beichman, Bifano, Borucki, Burrows, Burrows, Cash, Charbonneau, Charbonneau, Deming, Deming, Dyson, Désert, Enya, Enya, Enya, Enya, Enya, Enya, Enya, Green, Guyon, Guyon, Harrington, Haze, Henry, Hodapp, Horner, Kalas, Kaneda, Kaneda, Kasdin, Kasdin, Keigo Enya, Kenyon, Lyot, Marois, Mayor, Mulvihill, Murakami, Murakami, Nakagawa, Nakagawa, Onaka, Onaka, Pluzhnik, Richardson, Soummer, Stewart, Sugita, Swain, Swain, Tamura, Tanaka, Tanaka, Tinetti, Toomey, Traub, Traub, Trauger, Vanderbei, Vanderbei, Vanderbei, Werner   +66 more
core   +1 more source