Results 81 to 90 of about 48,891 (290)

Gamma-Ray Telescopes (in "400 Years of Astronomical Telescopes")

, 2009
The last half-century has seen dramatic developments in gamma-ray telescopes, from their initial conception and development through to their blossoming into full maturity as a potent research tool in astronomy.
AJ Bird, CE Fichtel, F Lebrun, FA Harrison, G Boella, G Bélanger, G Kanbach, GD Badhwar, GJ Perlow, GJ Perlow, GK Skinner, J Tueller, JD Kurfess, JD Kurfess, John K. Cannizzo, KS Wood, N Gehrels, N Gehrels, Neil Gehrels, P Ballmoos von, RC Hartman, RW Klebesadel, SD Barthelmy, V Schönfelder, V Schönfelder, V Schönfelder, WL Kraushaar, WN Johnson   +27 more
core   +1 more source

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source

Radiation-induced Degradation and On-orbit Performance Assessment of an sCMOS Detector

The Astronomical Journal
Optical astronomical projects have traditionally relied on charge-coupled device (CCD) detectors. However, next-generation complementary metal-oxide-semiconductor (CMOS) technology, with advantages including high-speed readout, low dark current, and ...
Qi Feng, Ziyi Liu, Hongfei Zhang, Jian Wang, Jian Ge, Xinyu Yao, Hongjing Yang, Weicheng Zang, Zitao Zhao, Mingzhu Xun, Baolong Chen, Kangzhe Wang, Xinbo Wang   +12 more
doaj   +1 more source

Continued development of doped-germanium photoconductors for astronomical observations at wavelengths from 30 to 120 micrometers [PDF]

The development of doped-germanium detectors which have optimized performance in the 30- to 120-mu m wavelength range and are capable of achieving the objectives of the infrared astronomical satellite (IRAS) space mission is discussed.
Bratt, P. R., Lewis, N. N., Long, L. E.
core   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

A Bifunctional T3SS‐Effector Simultaneously Cleaves Host MAP Kinase and Inhibits PPM1A Phosphatase

Advanced Science, EarlyView.
Pathogenic bacteria exploit the metalloprotease effector NleD to subvert host defenses. Structural, biochemical, and infection analyses reveal a bifunctional mechanism by which NleD binds and inhibits the host phosphatase PPM1A while preserving its proteolytic activity against MAPKs.
Yaakov Socol, Lihi Gur‐Arie, Netanel Tzarum, Tamara Wellins, Naama Katsowich, Miriam Ravins, Michal Bejerano‐Sagie, Klil Cohen, Oded Livnah, Joshua N. Adkins, Ernesto Nakayasu, Alexei Savchenko, Yeu Khai Choong, Nikhil Kumar Tulsian, Saturo Machida, Sigal Ben‐Yehuda, Yael Litvak, J. Sivaraman, Ilan Rosenshine   +18 more
wiley   +1 more source

MUSTANG: 90 GHz Science with the Green Bank Telescope

, 2008
MUSTANG is a 90 GHz bolometer camera built for use as a facility instrument on the 100 m Robert C. Byrd Green Bank radio telescope (GBT). MUSTANG has an 8 by 8 focal plane array of transition edge sensor bolometers read out using time-domain multiplexed ...
Ade, P. A. R., Aguirre, J., Ames, T. J., Benford, D. J., Chen, T. C., Chervenak, J. A., Cotton, W. D., Devlin, M. J., Dicker, S. R., Figueroa-Feliciano, E., Irwin, K. D., Korngut, P. M., Maher, S., Mason, B. S., Mello, M., Moseley, S. H., Tally, D. J., Tucker, C., White, S. D.   +18 more
core   +1 more source

2D Copper MOF Membranes with Precise Pores for Ionic Memory

Advanced Science, EarlyView.
 . ABSTRACT Biological ion channels play a critical role in the complex physiological processes of living organisms. Inspired by these natural systems, we demonstrate the fabrication of ultrathin 2D copper‐based metal‐organic framework (CuMOF) films and their application to mimic key functionalities of biological membranes. Using a liquid–air interface
Hiran Jyothilal, Raj Kumar Gogoi, Yuchen Liu, Vikas Sharma, Solleti Goutham, Michael Hutton, Rachel C. Kilbride, Daniel T.W. Toolan, Ashok Keerthi, Boya Radha   +9 more
wiley   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

X-Ray Polarization Study of Pulsar Wind Nebulae with eXTP: Simulation Results and Scientific Prospects

The Astrophysical Journal
X-ray polarization observations of pulsar wind nebulae (PWNe) provide crucial insights into magnetic field structures and particle acceleration mechanisms.
Kuan Liu, Fei Xie, Ming-Yu Ge, Wei Deng, En-Wei Liang   +4 more
doaj   +1 more source