Results 81 to 90 of about 11,174 (284)

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Flux Variations of Fast Radio Bursts and Their Persistent Radio Sources: Evidence for a Shared Progenitor

The Astrophysical Journal
Fast radio bursts (FRBs) are millisecond-duration extragalactic radio transients, some of which are associated with compact persistent radio sources (PRSs), hinting at a physical connection.
Xinming Li, Chen-Hui Niu, Jia-heng Zhang, Di Li, Bing Zhang, Yuan-Pei Yang, Pei Wang, Junshuo Zhang, Yongkun Zhang, Ye Li, Jiarui Niu, Xiaoping Zheng, Yunwei Yu, Yi Feng, Bo Zhang, Fayin Wang, Yuhao Zhu, A. Ming Chen, Ze-Xin Du, Jian Li, weihong li, Chenchen Miao, Weiyang Wang, Guang-Lei Wu, Ai Yuan Yang, Jumei Yao, Ru-Shuang Zhao   +26 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Constraints on Fast Radio Burst Population from the First CHIME/FRB Catalog with the Hierarchical Bayesian Inference

The Astrophysical Journal
Fast radio bursts (FRBs) have emerged as one of the most dynamic areas of research in astronomy and cosmology. Despite increasing number of FRBs having been reported, the exact origin of FRBs remains elusive.
Huan Zhou, Zhengxiang Li, Zong-Hong Zhu
doaj   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

SPORADIC RADIO EMISSION OF SPACE OBJECTS AT LOW-FREQUENCIES

, 2021
Purpose: The results of studies of sporadic radio emission of several types of space radio sources, including neutron stars and planets of the Solar System, are presented.
O. O. Konovalenko, V. B. Ryabov, Rucker, H., O, J.-M. Grießmeier, Sydorchuk, M., A, Fischer, G., Skoryk, A., O, Karazin, V, N, Kravtsov, I., P, O. M. Ulyanov, Shevchenko, V., A, Griessmeier, Jean-Mathias, H. O. Rucker, V. A. Shevchenko, Ryabov, V., B, Vasylieva, I., y, Zarka, P., I. Y. Vasylieva, G. Fischer, S. M. Yerin, M. M. Kalinichenko, Shevtsova, A., I, P. Zarka, Zakharenko, V., V, Yerin, S., M, V. V. Zakharenko, A. O. Skoryk, Mylostna, K. Yu., Yu, Kalinichenko, M., M, M. A. Sydorchuk, Konovalenko, O., O, V. Yu. Kharlanova, I. P. Kravtsov, Kharlanova, V. Yu., Yu, K. Yu. Mylostna, Ulyanov, O., M, A. I. Shevtsova   +36 more
core   +1 more source

A Catalog of Local Universe Fast Radio Bursts from CHIME/FRB and the KKO

The Astrophysical Journal Supplement Series
We present the first catalog of fast radio burst (FRB) host galaxies from CHIME/FRB Outriggers, selected uniformly in the radio and the optical by localizing 81 new bursts to 2″ × ∼ 60″ accuracy using CHIME and the k’niʔatn k’l ⌣ stk’masqt Outrigger ...
The CHIME/FRB Collaboration, Mandana Amiri, Daniel Amouyal, Bridget C. Andersen, Shion Andrew, Kevin Bandura, Mohit Bhardwaj, P. J. Boyle, Charanjot Brar, Alyssa Cassity, Shami Chatterjee, Alice P. Curtin, Matt Dobbs, Fengqiu Adam Dong, Yuxin Dong, Gwendolyn M. Eadie, Tarraneh Eftekhari, Wen-fai Fong, Emmanuel Fonseca, B. M. Gaensler, Mark Halpern, Jason W. T. Hessels, Hans Hopkins, Adaeze L. Ibik, Ronniy C. Joseph, Jane Kaczmarek, Lordrick Kahinga, Victoria Kaspi, Kholoud Khairy, Charles D. Kilpatrick, Adam E. Lanman, Mattias Lazda, Calvin Leung, Robert Main, Lluis Mas-Ribas, Kiyoshi W. Masui, Ryan Mckinven, Juan Mena-Parra, Bradley W. Meyers, Daniele Michilli, Nikola Milutinovic, Kenzie Nimmo, Gavin Noble, Ayush Pandhi, Swarali Shivraj Patil, Aaron B. Pearlman, Emily Petroff, Ziggy Pleunis, J. Xavier Prochaska, Masoud Rafiei-Ravandi, Mubdi Rahman, Andre Renard, Mawson W. Sammons, Ketan R. Sand, Paul Scholz, Vishwangi Shah, Kaitlyn Shin, Seth R. Siegel, Sunil Simha, Kendrick Smith, Ingrid Stairs, Keith Vanderlinde, Haochen Wang, Dallas Wulf, Tarik J. Zegmott   +64 more
doaj   +1 more source

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

Advanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov, Fabrizio Porrati, Florian Kronast, Riccardo Hertel, Pavlo Makushko, Olha Bezsmertna, Alexander Kuprava, Mohamad‐Assaad Mawass, Sven Barth, Michael Huth, Denys Makarov   +10 more
wiley   +1 more source

Sudden Polarization Angle Jumps of the Repeating Fast Radio Burst FRB 20201124A

The Astrophysical Journal Letters
We report the first detection of polarization angle orthogonal jumps, a phenomenon previously only observed from radio pulsars, from a fast radio burst (FRB) source FRB 20201124A.
J. R. Niu, W. Y. Wang, J. C. Jiang, Y. Qu, D. J. Zhou, W. W. Zhu, K. J. Lee, J. L. Han, B. Zhang, D. Li, S. Cao, Z. Y. Fang, Y. Feng, Q. Y. Fu, P. Jiang, W. C. Jing, J. Li, Y. Li, R. Luo, L. Q. Meng, C. C. Miao, X. L. Miao, C. H. Niu, Y. C. Pan, B. J. Wang, F. Y. Wang, H. Z. Wang, P. Wang, Q. Wu, Z. W. Wu, H. Xu, J. W. Xu, L. Xu, M. Y. Xue, Y. P. Yang, M. Yuan, Y. L. Yue, D. Zhao, C. F. Zhang, D. D. Zhang, J. S. Zhang, S. B. Zhang, Y. K. Zhang, Y. H. Zhu   +43 more
doaj   +1 more source

Deep optical and radio searches for a quiescent counterpart to the optical transient source OTS 1809+31

The Astrophysical Journal, 1989
Hudec (1987) has reported the detection of three bright transient optical images from the same celestial location localized to alpha(1950) = 18 h 9 m 26.29 s + or - 0.03 s, delta (1950) = +31 deg 23 arcmin 19.7 arcsec + or - 0.6 arcsec. This paper reports the result of a deep CCD search in four colors undertaken to find the quiescent counterpart of the
George R. Ricker, Patrick C. Mock, Edward A. Ajhar, Roland K. Vanderspek   +3 more
openaire   +1 more source