Results 31 to 40 of about 3,113 (205)

Optimization of Electrode Configuration in Surface-Parallel Actuated Deformable Mirrors [PDF]

, 2014
Thin, lightweight and low-cost deformable mirrors have been recently proposed, providing a pertinent device for wavefront error correction. We present different approaches to optimize actuator arrangement.
Laslandes, Marie, Patterson, Keith, Pellegrino, Sergio, Steeves, John   +3 more
core   +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

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Focusing Mirror with Tunable Eccentricity

, 2013
We present a new kind of varifocal mirror with independently adjustable curvatures in the major directions. For actuation we use two stacked piezo bending actuators with crossed in-plane polarization.
Brunne, Jens, Stürmer, Moritz, Wallrabe, Ulrike, Wapler, Matthias C.   +3 more
core   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Generation of a flat-top laser beam for gravitational wave detectors by means of a nonspherical Fabry-Perot resonator [PDF]

, 2007
We have tested a new kind of Fabry-Perot long-baseline optical resonator proposed to reduce the thermal noise sensitivity of gravitational wave interferometric detectors--the "mesa beam" cavity--whose flat top beam shape is achieved by means of an ...
Agresti, J., D'Ambrosio, E., DeSalvo, R., Forest, D., Lagrange, B., Mackowsky, J. M., Michel, C., Miller, John, Montorio, J. L., Morgado, N., Pinard, L., Remilleux, A., Simoni, B., Tarallo, Marco G., Willems, P.   +14 more
core   +1 more source

Switchable Magnonic Crystals Based on Spin Crossover/CrSBr Heterostructures

Advanced Materials, EarlyView.
Multiscale modeling is employed to investigate the functionality of a light‐controlled, tunable magnonic crystal based on spin‐crossover Fe‐pz molecules integrated with a monolayer of CrSBr. Ab initio simulations confirm that the molecules remain functional on the CrSBr surface, while a semiclassical elastic model demonstrates that light‐induced ...
Andrei Shumilin, Sourav Dey, Denisa Coltuneac, Laurentiu Stoleriu, José J. Baldoví   +4 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

EAGLE multi-object AO concept study for the E-ELT

, 2009
EAGLE is the multi-object, spatially-resolved, near-IR spectrograph instrument concept for the E-ELT, relying on a distributed Adaptive Optics, so-called Multi Object Adaptive Optics. This paper presents the results of a phase A study.
Assemat, F., Brangier, M., Cohen, M., Cuby, J. -G., Dipper, N., Evans, C., Fusco, T., Gendron, E., Gratadour, D., Jagourel, P., Laporte, P., Lehnert, M., Mignant, D. Le, Morris, S., Morris, T., Myers, R., Parr-Burman, P., Puech, M., Robert, C., Rousset, G., Schnetler, H., Taylor, W., Vidal, F.   +22 more
core   +3 more sources

Tensile strained $In_{x}Ga_{1-x}P$ membranes for cavity optomechanics [PDF]

, 2014
We investigate the optomechanical properties of tensile-strained ternary InGaP nanomembranes grown on GaAs. This material system combines the benefits of highly strained membranes based on stoichiometric silicon nitride, with the unique properties of ...
Aspelmeyer, M., Cole, G. D., Gärtner, C., Hoelscher-Obermaier, J., Nia, R. Moghadas, Purdy, T. P., Regal, C. A., Schmöle, J., Siquans, K., Wieczorek, W., Yu, P. -L.   +10 more
core   +3 more sources