Results 51 to 60 of about 48,622 (298)

Active Adjustment of the Subreflector Shape for the Large Dual-Reflector Antenna

Micromachines, 2023
A shape adjustment method for subreflectors based on minimizing the residual wavefront error of the large dual-reflector antenna is presented. This method is used to compensate for the antenna structural deformation caused by environment loading.
Binbin Xiang, Tianxiang Zheng, Wei Wang, Peiyuan Lian, Guljaina Kazezkhan, Jianping Zhou, Kai Li   +6 more
doaj   +1 more source

Remote‐Controllable Immune‐Priming Spot Formation Via Nanocomplexed Hydrogel‐Assisted Histotripsy: Immunoasis

Advanced Materials, EarlyView.
A novel immunotherapeutic strategy combines injectable, adjuvant‐loaded hydrogels with externally controlled histotripsy to create immune‐priming sites within tumors. This approach generates millimeter‐sized immune‐activated lesions with flexible, patient‐tailored treatment scheduling, enabling precise immune activation through tumor ablation‐mediated ...
Sung Hoon Kim, Wonseok Choi, Yurim Kim, Hyeongmin Kim, Gu Won Jeong, Hyewon Park, Inchan Youn, Yoon Park, Sungmin Han, Young‐Min Kim   +9 more
wiley   +1 more source

Controlling cantilevered adaptive X-ray mirrors

Journal of Synchrotron Radiation
Modeling the behavior of a prototype cantilevered X-ray adaptive mirror (held from one end) demonstrates its potential for use on high-performance X-ray beamlines.
Kenneth A. Goldberg, Kyle T. La Fleche
doaj   +1 more source

Laser Guide Star for Large Segmented-Aperture Space Telescopes, Part I: Implications for Terrestrial Exoplanet Detection and Observatory Stability

, 2018
Precision wavefront control on future segmented-aperture space telescopes presents significant challenges, particularly in the context of high-contrast exoplanet direct imaging.
Cahoy, Kerri L., Clark, James, Douglas, Ewan S., Guyon, Olivier, Lumbres, Jennifer R., Males, Jared R., Marlow, Weston A.   +6 more
core   +1 more source

Laboratory and telescope demonstration of the TP3-WFS for the adaptive optics segment of AOLI [PDF]

, 2017
AOLI (Adaptive Optics Lucky Imager) is a state-of-art instrument that combines adaptive optics (AO) and lucky imaging (LI) with the objective of obtaining diffraction limited images in visible wavelength at mid- and big-size ground-based telescopes.
Colodro Conde, Carlos, Femenia, Bruno, Fernández Valdivia Juan José, King, David L., Labadie, Lucas, López López, Roberto, Mackay, Craig, Oscoz Abad, Alejandro, Puga Antolín, Marta, Pérez Garrido, Antonio, Rebolo López, Rafael, Rodríguez Coira, Gustavo, Rodríguez Ramos, José Manuel, Rodríguez Ramos, Luis Fernando, Toledo Moreo, Rafael, Toledo Moreo, Rafael, Villo Pérez, Isidro   +16 more
core   +3 more sources

Arbitrary Total Angular Momentum Vectorial Holography Using Bi‐Layer Metasurfaces

Advanced Materials, EarlyView.
A bi‐layer metasurface platform is presented for arbitrary total angular momentum vectorial holography, where polarization and orbital angular momentum are exploited as independent multiplexing dimensions. By overcoming symmetry limitations of single‐layer designs, the approach generates distinct vectorial holographic images for each orthogonal TAM ...
Joonkyo Jung, Hyeonhee Kim, Jonghwa Shin
wiley   +1 more source

Collaborative development of diffraction-limited beamline optical systems at US DOE light sources [PDF]

, 2019
An ongoing collaboration among four US Department of Energy (DOE) National Laboratories has demonstrated key technology prototypes and software modeling tools required for new high-coherent flux beamline optical systems. New free electron laser (FEL) and
Assoufid, L, Bryant, D, Chao, W, Cocco, D, Goldberg, KA, Grizolli, W, Hardin, C, Huang, L, Idir, M, Kearney, SP, Lee, L, Morton, D, Ng, ML, Shi, X, Shu, D, Shvyd'Ko, Y, Wojcik, M, Wojdyla, A   +17 more
core  

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

Holographic Whole‐Object Photopolymerization Preserving Director Alignment in Liquid Crystalline Actuators

Advanced Materials, EarlyView.
Holographic microlithography enables the fabrication of fully connected 3D liquid crystalline structures in a single exposure. The process maintains precise control over the director orientation within the entire object, preventing local director distortions typically observed in sequential printing.
Lovish Gulati, Junhee Lee, Reza Norouzikudiani, Jianfeng Li, Carlos Sánchez Somolinos, Antonio DeSimone, Kai Melde, Alexander Song, Peer Fischer   +8 more
wiley   +1 more source

Time-reversed optical focusing through scattering media by digital full phase and amplitude recovery using a single phase-only SLM [PDF]

Journal of Innovative Optical Health Sciences, 2015
Focusing light though scattering media beyond the ballistic regime is a challenging task in biomedical optical imaging. This challenge can be overcome by wavefront shaping technique, in which a time-reversed (TR) wavefront of scattered light is generated
Qiang Yang, Xinzhu Sang, Daxiong Xu
doaj   +1 more source