Results 61 to 70 of about 939,149 (288)

Development Of A L-Band Four-Element Interferometer At The Mauritius Radio Astronomy Observatory

, 2023
In this paper, we describe briefly the design and development of a L-band four-element interferometer built at the Mauritius Radio Astronomy Observatory (MRAO).
Wilkinson, P., Heeralall-Issur, N., Deshpande, A. A., Akumu, P., Golap, K., Forson, A. K., Varenius, Eskil, Surnam, B. Y.R., Golap, K.,, Deshpande, A. A.,, Wilkinson, P.,, Surnam, B. Y.R.,, Akumu, P.,, Forson, A. K.,, Heeralall-Issur, N.,, Varenius, Eskil,   +15 more
core   +1 more source

Synthesis of Bulk Superconducting LiNbO2 Crystals Through CaH2 Reduction

Advanced Materials, EarlyView.
CaH2 reduction reconstructively transforms insulating LiNbO3 single crystals into superconducting bulk LiNbO2 with a critical temperature of Tc = 14.4 K. Scanning electron microscopy reveals large‐volume, high‐yield phase conversion. Magnetization measurements demonstrate a robust ∼ 77% Meissner shielding fraction, establishing bulk superconductivity ...
Ryan Paxson, Stephanie J. Hong, Bicky S. Moirangthem, Parham Kabirifar, Saya Takeuchi, Tianyu Li, Chih‐Yu Lee, Haotong Liang, Keenan Avers, Kamal R. Joshi, Amlan Datta, Makariy A. Tanatar, Shanta Saha, Joseph A. Dura, Peter Zavalij, Johnpierre Paglione, Ruslan Prozorov, Alexander J. Grutter, Efrain E. Rodriguez, Ichiro Takeuchi   +19 more
wiley   +1 more source

Unveiling the power of multimodal large language models for radio astronomical image understanding and question answering

Machine Learning: Science and Technology
Although multimodal large language models (MLLMs) have shown remarkable achievements across various scientific domains, their applications in radio astronomy remain largely unexplored.
Fuyong Zhao, Yuyang Li, Zhenyu Liu, Panfeng Chen, Cunshi Wang, Jifeng Liu, Hui Li, Yanhao Wang   +7 more
doaj   +1 more source

Wafer‐Scale Direct Growth of Ultraclean Monolayer Amorphous Carbon on c‐Sapphire by Remote Catalytic Dehydrogenation

Advanced Materials, EarlyView.
Remote catalytic dehydrogenation enables the direct growth of monolayer amorphous carbon on a 2‐inch sapphire wafer by thermal CVD. Spatial separation of the catalyst from the growth substrate eliminates metallic residue and post‐growth processing, yielding a wafer‐scale uniform film with a random polygonal sp2‐hybridized carbon network that exhibits ...
Muhammad Sabbtain Abbas, Imhwan Kim, Seokje Lee, Yasir Hassan, Jihwan Kim, Eunsu Lee, Han Ik Kim, Yoonkang Kim, Gyu‐Chul Yi   +8 more
wiley   +1 more source

A Quasi-Linear Harmonic Balance Model for Studying the Performance of Sideband-Separating SIS Receivers

IEEE Access
We present a novel modeling technique to accurately simulate the gain, single-sideband noise temperature, and image rejection of a sideband-separating superconductor-insulator-superconductor (SIS) heterodyne receiver.
David Monasterio, Joseph G. Lambert, Philip Dindo, Claudio Jarufe, Pablo Astudillo, Kamaljeet Saini, F. Patricio Mena, Alessandro Navarrini   +7 more
doaj   +1 more source

Light‐Controlled Localized Delamination and Blistering of Azobenzene‐Containing Polymer Thin Films in an Aqueous Environment

Advanced Materials Interfaces, EarlyView.
When exposed to light of a defined wavelength, the photoisomerization of azobenzene chromophores leads to polymer reorientation, generating stresses that result in solvent‐facilitated localized delamination of the film from the substrate. Additionally, blisters that form spontaneously when exposed to an aqueous environment can be manipulated via ...
James Robert Benson, Jonas Strobelt, Nino Lomadze, Svetlana Santer, Stephan Eickelmann   +4 more
wiley   +1 more source

SEASONAL VARIATIONS OF THE IONOSPHERE SCINTILLATIONS PARAMETERS OBTAINED FROM THE LONG OBSERVATIONS OF THE POWER COSMIC RADIO SOURCES AT THE DECAMETER WAVE RANGE

Odessa Astronomical Publications, 2016
Observations of the four power cosmic radio sources were carried out on the radio telescope (RT) URAN-4 during 1987-1990 and 1998-2007 at the frequencies 20 and 25 MHz.
O. A. Lytvynenko, S. K. Panishko
doaj   +1 more source

Culinary Chemistry as a Platform for Interfacial Materials Design

Advanced Materials Interfaces, EarlyView.
Culinary processes control interfaces through heating, shear, gelation, and molecular transport. This Review connects selected gastronomic examples with food‐derived nanomaterials, plasmonic sensing, anthocyanin photovoltaics, and intelligent packaging. Original agar‐based plasmonic films illustrate the proposed translation.
Josep Moreno, I. Brian Becerril‐Castro, Irene Calderon‐Gonzalez, Jaslyn Ru Ting Chen, Zhiming Wang, Alexander O. Govorov, José Manuel Romo‐Herrera, Neus Feliu, Wolfgang J. Parak, Miguel A. Correa‐Duarte, In Yee Phang, Xing Yi Ling, Ramón A. Alvarez‐Puebla   +12 more
wiley   +1 more source

Hierarchically Wrinkled Silver Ink as a Platform for Fully Integrated Stretchable Electronic Systems

Advanced Materials Technologies, EarlyView.
Silver Hierarchical Responsive ink (SHRink), a universal approach for the fabrication of highly stretchable interconnects, wirings, and skin‐interfaced electrodes, is realized through low‐cost, scalable spray‐printing and transfer‐printing. The SHRink demonstrates high electrical conductivity (1.2E04 S cm−1) and large stretchability (235% max fracture ...
Junye Li, Hao Wang, Xinlei Chen, Mehmet Senel, Patrick Rwei, Sara Marmarchi, David Clymer, Blossom Sundarii Hak‐Khem, Nhi Nguyen, Chengyang Qian, Matt Thomson, Michelle Khine   +11 more
wiley   +1 more source

An Analysis of Embedding Impedance for Q-Band Waveguide Gunn Oscillator With Resonance Post [PDF]

Journal of Astronomy and Space Sciences, 2001
The oscillation frequency tuning range of waveguide Gunn oscillator and its stability depend sensitively on the dimensions of the resonator. Therefore the embedding impedances with the various dimensions of the resonator for Q-band (33~50 GHz) Gunn ...
Hyungjoo Kim, Seogtae Han, Taiseong Kim, Kwangdong Kim, Changhoon Lee, Moonhee Chung, Yonggi Kim   +6 more
doaj