Results 41 to 50 of about 2,634 (203)

Linking Device Performance to Nanoscale Photoactivation of Grain Boundaries in 2D Hybrid Halide Perovskites

Advanced Materials Technologies, EarlyView.
The opto‐electronic response of polycrystalline (PEA)2PbBr4 thin films is investigated by correlating macroscopic photodetector performance with nanoscale mapping techniques. Grain boundary density is systematically tuned through crystallization control and linked to device responsivity.
Camilla Bordoni, Lorenzo Calcaterra, Andrea Ciavatti, Silvia Milita, Valentina Bonino, Lorenzo Margotti, Sara Cepić, Marisa Di Sabatino, Federico Boscherini, Daniela Cavalcoli, Beatrice Fraboni   +10 more
wiley   +1 more source

Flux closure during a substorm observed by cluster, double star, IMAGE FUV, SuperDARN, and greenland magnetometers [PDF]

, 2006
We examine magnetic flux closure during an ex- tended substorm interval on 29 August 2004 involving a two-stage onset and subsequent re-intensifications.
Hubert, Benoît, C. M. Carr, Hubert, B., Carr, C. M., Milan, S. E., Lucek, E. A., Lucek, E., Wild, J. A., J. A. Wild, Watermann, J. F., Carr, Chris M., S. E. Milan, E. A. Lucek, Slavin, J. A., J. F. Watermann, J. A. Slavin, Bosqued, J. M., B. Hubert, J. M. Bosqued   +18 more
core   +1 more source

Luminescence and Photochromism in Lanthanide‐Doped Hackmanites

Advanced Optical Materials, EarlyView.
Lanthanide‐doped lithium hackmanite derivatives are prepared utilizing a doped LiAlSiO4 precursor to modify luminescent and photochromic properties. Upon UV excitation, europium doping results in green Eu2+ persistent luminescence from shallow traps. Contrarily, samarium doping induces unusual near‐infrared photochromism.
Joshua Baggott, Minnea Tuomisto, J. A. Gareth Williams, Sari Granroth, Ermei Mäkilä, Ari Väisänen, Jani O. Moilanen, Mika Lastusaari   +7 more
wiley   +1 more source

A Multiwavelength Survey of Nearby M Dwarfs: Optical and Near-ultraviolet Flares and Activity with Contemporaneous TESS, Kepler/K2, Swift, and HST Observations

The Astrophysical Journal
We present a comprehensive multiwavelength investigation into flares and activity in nearby M dwarf stars. We leverage the most extensive contemporaneous data set obtained through the Transiting Exoplanet Sky Survey, Kepler/K2, the Neil Gehrels Swift ...
Rishi R. Paudel, Thomas Barclay, Allison Youngblood, Elisa V. Quintana, Joshua E. Schlieder, Laura D. Vega, Emily A. Gilbert, Rachel A. Osten, Sarah Peacock, Isaiah I. Tristan, Dax L. Feliz, Patricia T. Boyd, James R. A. Davenport, Daniel Huber, Adam F. Kowalski, Teresa Monsue, Michele L. Silverstein   +16 more
doaj   +1 more source

A Year-Long Plateau in the Late-Time Near-Infrared Light Curves of Type Ia Supernovae

, 2023
The light curves of Type Ia supernovae are routinely used to constrain cosmology models. Driven by radioactive decay of 56Ni, the light curves steadily decline over time, but >150 days after explosion, the near-infrared portion is poorly characterized ...
Nicholl, Margaret, Maguire, K, Seitenzahl, I, Graur, Or, Fisher, Robert, Ryan, R, Shingles, L, Avelino, Arturo, Riess, A   +8 more
core   +1 more source

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source

Towards the development of a SiPM-based camera for the Cherenkov Telescope Array

EPJ Web of Conferences, 2017
The Italian National Institute for Nuclear Physics (INFN) is involved in the development of a prototype for a camera based on Silicon Photomultipliers (SiPMs) for the Cherenkov Telescope Array (CTA), a new generation of telescopes for ground-based gamma ...
Ambrosi G., Bissaldi E., Di Venere L., Fiandrini E., Giglietto N., Giordano F., Ionica M., Paoletti R., Simone D., Vagelli V.   +9 more
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Near-ultraviolet Stellar Activity and Brightness Fluctuations of the Alpha Centauri AB Star System from Weeks to Decades—Inputs for Reflected-light Spectroscopy with HWO

The Astronomical Journal
We present the most comprehensive near-UV (NUV: 2550–3255 Å) activity record to date for the Alpha Centauri AB system, combining archival International Ultraviolet Explorer and Hubble Space Telescope observations spanning nearly 5 decades with new high ...
Dolon Bhattacharyya, Kevin France, Soumit Rao, Sebastian Escobar, David J. Wilson, Arika Egan, Phillip Chamberlin, A. G. Sreejith, Alexander Brown   +8 more
doaj   +1 more source

Multi-wavelength view of the galactic black-hole binary GRS 1716–249

, 2021
The origins of X-ray and radio emissions during an X-ray binary outburst are comparatively better understood than those of ultraviolet, optical and infrared radiation. This is because multiple competing mechanisms – emission from intrinsic and irradiated
Aarthy, E., Joshi, Vishal, Rout, Sandeep K., Roy, Jayashree, Misra, Ranjeev, Yadav, J. S., Vadawale, Santosh V., Ganesh, Shashikiran   +7 more
core   +1 more source