Results 51 to 60 of about 48,747 (277)

Design and Performance of a 30/40 GHz Diplexed Focal Plane for the BICEP Array

The Astrophysical Journal Supplement Series
We demonstrate a wideband diplexed focal plane suitable for observing low-frequency foregrounds that are important for cosmic microwave background polarimetry.
Corwin Shiu, Ahmed Soliman, Roger O’Brient, Bryan Steinbach, James J. Bock, Clifford F. Frez, William C. Jones, Krikor. G. Megerian, Lorenzo Moncelsi, Alessandro Schillaci, Anthony D. Turner, Alexis C. Weber, Cheng Zhang, Silvia Zhang   +13 more
doaj   +1 more source

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

Advanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton, Naëmi Leo, Jakub Jurczyk, Claire Donnelly, Dédalo Sanz‐Hernández, Luka Skoric, Nicholas Mille, Stefan Stanescu, Donald A MacLaren, Rachid Belkhou, Aurelio Hierro‐Rodriguez, Amalio Fernández‐Pacheco   +11 more
wiley   +1 more source

Improving H2RG Performance in SPHEREx Brassboard Model

The Astrophysical Journal Supplement Series
Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer is an upcoming NASA satellite mission to study the physics of inflation, the history of galaxy formation, and the abundance of biogenic ices in the Milky Way ...
Chi H. Nguyen, Phillip Korngut, C. Darren Dowell, James Bock, Jill Burnham, Samuel Condon, Walter Cook, Grigory Heaton, Howard Hui, Branislav Kecman, Hiromasa Miyasaka, Kenneth Manatt, Hien T. Nguyen, Stephen Padin, Marco Viero   +14 more
doaj   +1 more source

A microwave kinetic inductance camera for sub/millimeter astrophysics [PDF]

, 2008
The MKID Camera is a millimeter/submillimeter instrument being built for astronomical observations from the Caltech Submillimeter Observatory. It utilizes microwave kinetic inductance detectors, which are rapidly achieving near-BLIP sensitivity for ...
Day, Peter K., Ferry, Matt, Gao, Jiansong, Glenn, Jason, Golwala, Sunil R., Kumar, Shwetank, LeDuc, Henry G., Maloney, Philip R., Mazin, Benjamin A., Nguyen, Hien, Noroozian, Omid, Sayers, Jack, Schlaerth, James, Vaillancourt, John E., Vayokanis, Anastasios, Zmuidzinas, Jonas   +15 more
core   +1 more source

Compact Stirling cooling of astronomical detectors

, 2013
MAIA, a three-channel imager targeting fast cadence photometry, was recently installed on the Mercator telescope (La Palma, Spain). This instrument observes a 9.4 x 14.1 arcmin field of view simultaneously in three color bands ($u$, $g$ and $r$), using three of the largest (un-) available frame-transfer CCDs, namely the 2k x 6k CCD42-C0 from e2v.
Raskin, Gert, Morren, Johan, Pessemier, Wim, Padilla, Jesus Perez, Vandersteen, Jeroen   +4 more
openaire   +2 more sources

Non Thermal‐Driven Photocatalytic Ammonia Decomposition at Near‐Room Temperature on a Plasmonic Nanocone Array

Advanced Functional Materials, EarlyView.
Plasmonic photocatalytic ammonia decomposition occurs at near‐room temperature on a plasmonic Au nanocone array under visible light illumination. The nanostructure efficiently harnesses plasmonic modes, leading to increased reaction rates upon plasmon decay.
Thanh‐Lam Bui, S. M. Hossein Hejazi, Jan Navrátil, Hana Kmentová, Petr Bábor, Olivier Henrotte, Luca Mascaretti, Matteo Bisetto, Stephen K. Sanders, Andrea Schirato, Michal Otyepka, Piotr Błoński, Tiziano Montini, Radek Zboril, Paolo Fornasiero, Alessandro Alabastri, Alberto Naldoni, Stepan Kment   +17 more
wiley   +1 more source

Development of a low-noise 1 × 3 mosaic HgCdTe camera with high-precision thermal and flatness control for K-band imaging

AIP Advances
The K-band (2.0–2.4 μm) is crucial for observing astrophysical processes obscured by interstellar dust, such as star formation and active galactic nuclei.
Wen-qing Qu, Hao-ran Ma, Jiang-yuan Wei, Yu Ning, Zhe Geng, Yu Zhang, Hong-fei Zhang, Jian Wang   +7 more
doaj   +1 more source

Flux‐Regulated Crystallization of Perovskites Using Machine Learning‐Predicted Solvent Evaporation Rates for X‐Ray Detectors

Advanced Functional Materials, EarlyView.
By integrating machine learning into flux‐regulated crystallization (FRC), accurate prediction of solvent evaporation rates in real time, improving crystallization control and reducing crystal growth variability by over threefold, is achieved. This enhances the reproducibility and quality of perovskite single crystals, leading to reproducible ...
Tatiane Pretto, Sergey Dayneko, Antoine Pavesic Junior, Nicholas Sandor, Alexander Hart, Yuki Haruta, Magdalena Bazalova‐Carter, Marcos J. L. Santos, Makhsud I. Saidaminov   +8 more
wiley   +1 more source

New Astronomical Observations: Joseph Weber’s Contribution to Gravitational Waves and Neutrinos Detection

Substantia, 2017
Joseph Weber, form Maryland University, was a pioneer in the experimental research of gravitational waves and neutrinos. Today these two techniques are very promising for astronomical observation, since will allow to observe astrophysical phenomena under
Stefano Gottardo
doaj   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

Advanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu, Varun Shah, Rodion Vladimirovich Belosludov, Mohammad Saeed Bahramy   +3 more
wiley   +1 more source