Results 91 to 100 of about 666,559 (380)

Wind-induced deformations in a segmented mirror [PDF]

Applied Optics, 2002
A Zernike expansion of wind-induced deformations in a segmented mirror is described. The wind model is a frozen turbulent field with a Kolmogorov spectrum for scales smaller than the outer scale and a flat spectrum for scales larger than the outer scale.
openaire   +4 more sources

High-contrast imager for Complex Aperture Telescopes (HiCAT): 1. Testbed design [PDF]

, 2013
Searching for nearby habitable worlds with direct imaging and spectroscopy will require a telescope large enough to provide angular resolution and sensitivity to planets around a significant sample of stars.
Carlotti, Alexis, Choquet, Elodie, Elliot, Erin, Groff, Tyler, Kasdin, N. Jeremy, Macintosh, Bruce, Mawet, Dimitri, N'Diaye, Mamadou, Perrin, Marshall D., Pueyo, Laurent, Shaklan, Stuart, Sheckells, Matt, Soummer, Rémi, Wallace, J. Kent   +13 more
core   +4 more sources

Eco‐Fabricated Nanowave‐Textured Implants Drive Microtubule‐Assisted Nuclear Mechanotransduction and Chromatin Modification: Biophysical Priming for Osteogenesis and Bone Regeneration

Advanced Functional Materials, EarlyView.
Eco‐friendly nanowave‐textured implants produced via femtosecond laser fabrication enhance bone regeneration by orchestrating a precise mechanotransduction cascade. This nanotopography directs mesenchymal stem cell alignment and cytoskeletal organization, triggering changes in nuclear shape and chromatin acetylation that prime cells for osteogenesis ...
Bosu Jeong, Ji‐Young Yoon, Junyong Ahn, Byunghak Lee, Sung‐Min Park, Jae‐Heon Kim, Buuvee Bayarkhangai, Yu Jin Kim, Sak Lee, Jonathan C. Knowles, Moon‐Young Kim, DongJun Lee, Sang‐Hoon Rhee, Hae‐Hyoung Lee, Hae‐Won Kim, Jung‐Hwan Lee   +15 more
wiley   +1 more source

Innovative Membrane Deformable Mirrors

, 2012
Nowadays adaptive optics (AO) is a very powerful technique for several scientific and technological applications, and with important economical perspectives. In the last decade, AO technology has fostered new solutions to improve adaptive components performance.
S. Bonora, U. Bortolozzo, NALETTO, GIAMPIERO, S. Residori   +3 more
openaire   +5 more sources

Self‐Powered Real‐Time Temperature Sensing Based on Flexible Ionic Elastomer on Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This study introduces a self‐powered real‐time ionic TENG temperature sensing system for flexible thermal management with high and real‐time temperature monitoring. Ionic liquids and elastomer chains are investigated under temperature via electrochemical and physical analysis, resulting in enhancing thermal sensitivity and output performance on TENG ...
Hee Jae Hwang, Joo Sung Kim, Seungin Oh, Jeonghoon Han, Hanbin Choi, Youngsuk Nam, Jin‐Gyun Kim, Do Hwan Kim, Kwun‐Bum Chung, Dukhyun Choi   +9 more
wiley   +1 more source

A Universal Biomimetic Approach for Making Artificial Antigen‐Presenting Cells for T Cell Activation

Advanced Functional Materials, EarlyView.
This study shows a biomimetic silica microcapsule (SMC) fabrication method under mild conditions for making artificial antigen‐presenting cells (aAPCs). Inspired by marine biomineralization, peptide‐mediated biosilicification enables silica shell formation on emulsion templates. The resulting SMCs possess a core–shell structure, controlled fluorescence
Fei Hou, Supun Ranaweera, Xiangke Li, Ruirui Qiao, Yue Hui, Chun‐Xia Zhao   +5 more
wiley   +1 more source

Distributed control of large deformable mirrors [PDF]

SPIE Proceedings, 2012
While it is attractive to integrate a deformable mirror (DM) for adaptive optics (AO) into the telescope itself rather than using relay optics within an instrument, the resulting large DM can be expensive, particularly for extremely large telescopes. A low-cost approach for building a large DM is to use voice-coil actuators, and rely on feedback from ...
MacMartin, Douglas G., Heimsten, Rikard, Andersen, Torben, Owner-Petersen, Mette   +3 more
openaire   +4 more sources

Comprehensive Si Anode Design for Sulfide‐Based all‐Solid‐State Batteries: Insights into Si‐Electrolyte Synergy for Mitigating Contact Loss

Advanced Functional Materials, EarlyView.
Silicon anodes in sulfide‐based all‐solid‐state batteries suffer from interfacial instability caused by volumetric fluctuations and contact degradation, restricting their practical implementation despite high capacity. This study presents design strategies that leverage controlled active material expansion and an elastic recoverable anolyte to form an ...
Youngjin Song, Sungjin Cho, Suhwan Kim, Youyeong Shin, Ikcheon Na, Jongwoo Lim, Yong Min Lee, Soojin Park   +7 more
wiley   +1 more source

Active Control of Laser Wavefronts in Atom Interferometers

, 2017
Wavefront aberrations are identified as a major limitation in quantum sensors. They are today the main contribution in the uncertainty budget of best cold atom interferometers based on two-photon laser beam splitters, and constitute an important limit ...
Langlois, Mehdi, Merlet, Sébastien, Santos, Franck Pereira dos, Trimeche, Azer   +3 more
core   +2 more sources

Highly Sensitive Cuffless Blood Pressure Monitoring with Selective Laser‐Sintered Liquid Metal Conductors

Advanced Functional Materials, EarlyView.
A soft, compact, and cuffless system for continuous blood pressure monitoring using laser‐sintered liquid metal conductors is developed. The stretchability and sensitivity of the device enable real‐time, non‐invasive tracking of blood pressure, including recovery after exercise. This wearable device offers a practical solution for managing hypertension
Jung Jae Park, Sangwoo Hong, Yeongju Jung, Phillip Won, Carmel Majidi, Minwoo Kim, Seung Hwan Ko   +6 more
wiley   +1 more source