Results 71 to 80 of about 30,667 (264)

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

Quantitative Stain Mapping in X‐Ray Virtual Histology

Advanced Science, EarlyView.
Virtual histology promises 3D tissue examination without physical sectioning, yet has lacked the tissue‐specificity of conventional pathology. This work demonstrates the first quantitative three‐dimensional stain mapping at histologically relevant resolution, separating contrast agent from tissue to reveal cellular features such as nuclei. The approach
Dominik John, David M. Paganin, Marie‐Christine Zdora, Lisa Marie Petzold, Patrick Ilg, Junan Chen, Sara Baggio, Johannes B. Thalhammer, Sami Wirtensohn, Julian Moosmann, Jörg U. Hammel, Felix Beckmann, Samantha J. Alloo, Jannis N. Ahlers, Madleen Busse, Julia Herzen, Kaye S. Morgan   +16 more
wiley   +1 more source

Multiple field-of-view MCAO for a Large Solar Telescope: LOST simulations

, 2010
In the framework of a 4m class Solar Telescope we studied the performance of the MCAO using the LOST simulation package. In particular, in this work we focus on two different methods to reduce the time delay error which is particularly critical in solar ...
Berrilli, Francesco, Del Moro, Dario, Piazzesi, Roberto, Stangalini, Marco   +3 more
core   +1 more source

Telescope to Observe Planetary Systems (TOPS): a high throughput 1.2-m visible telescope with a small inner working angle [PDF]

, 2006
The Telescope to Observe Planetary Systems (TOPS) is a proposed space mission to image in the visible (0.4-0.9 micron) planetary systems of nearby stars simultaneously in 16 spectral bands (resolution R~20). For the ~10 most favorable stars, it will have
/, Angel, James R. P., Bowers, Charles, Burge, James, Burrows, Adam, Codona, Johanan, Greene, Thomas, Guyon, Olivier, Iye, Masanori, Kasting, James, Martin, Hubert, McCarthy, Jr., Donald W., Meadows, Victoria, Meyer, Michael, Pluzhnik, Eugene A., Sleep, Norman, Spears, Tony, Tamura, Motohide, Tenerelli, Domenick, Vanderbei, Robert, Woodgate, Bruce, Woodruff, Robert A., Woolf, Neville J.   +22 more
core   +2 more sources

Dispersive Full‐Channel Jones Matrix Modulation in Elliptical Polarization Bases via a Single‐Layered Metasurface

Advanced Science, EarlyView.
This work presents a dispersive full‐channel Jones matrix modulation strategy using single‐layer metasurface. By synergizing wavelength dispersion engineering with elliptical polarization bases, independent control of four Jones matrix channels is achieved across multiple wavelengths.
Hairong He, Guangtao Cao, Shuhao Zhang, Hui Xu, Zhiquan Chen, Meiyu Peng, Yuting Jiang, Yueqiang Hu, Hui Jing, Huigao Duan, Hui Yang   +10 more
wiley   +1 more source

Results from the GMT Ground-Layer Experiment at the Magellan Telescopes [PDF]

, 2006
We present results from our two year study of ground-layer turbulence as seen through the 6.5-meter Magellan Telescopes at Las Campanas Observatory. The experiment consists of multiple, moderate resolution, Shack-Hartmann wavefront sensors deployed over ...
Athey, A., Phillips, M., Shectman, S., Thomas-Osip, J.   +3 more
core   +3 more sources

Broadband Achromatic Programmable Electromagnetic Camouflage via Fluidic‐Accessible Metasurface

Advanced Science, EarlyView.
A fluidic access metasurface enables dynamic, broadband electromagnetic illusions. By physically reconstructing conductive patterns with liquid metal, the metasurface achieves real‐time, pixel‐level control over phase dispersion. This allows for the programmable generation of arbitrary strong scattering point arrays, effectively deceiving high ...
Shipeng Liu, Jiahao Zhang, Jiale Wang, Zeyao Chen, Zhaotong Yu, Jinhong Luo, Jiabao Luo, Rujia Cao, Shuxi Gong, Qingxin Guo, Ping Li, Rujiang Li, Ke Chen, Yongtao Jia, Ying Liu   +14 more
wiley   +1 more source

First On-Sky High Contrast Imaging with an Apodizing Phase Plate [PDF]

, 2007
We present the first astronomical observations obtained with an Apodizing Phase Plate (APP). The plate is designed to suppress the stellar diffraction pattern by 5 magnitudes from 2-9 lambda/D over a 180 degree region. Stellar images were obtained in the
Ari Heinze, Codona J. L., J. Roger P. Angel, Johanan L. Codona, Kenworthy M. A., Lyot B., Matthew A. Kenworthy, Philip M. Hinz, Putnam N. C., Sivanandam S., Suresh Sivanandam   +10 more
core   +2 more sources

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source

Gaze‐Engineered 3D Augmented Reality

Advanced Intelligent Systems, EarlyView.
Augmented Reality (AR) systems serve as a critical interface bridging users with the metaverse. This study explores the application of human factors engineering in metaverse development, specifically investigating the integration of eye‐tracking technology to enhance AR display performance.
Naiqin Zhao, Jiasheng Xiao, Runze Zhu, Hao Zhang   +3 more
wiley   +1 more source