Results 91 to 100 of about 870,817 (352)

Variability flux of extragalactic sources DА55, CTA 102, 3C 120 AND OJ 287 in microwave range

Вісник Астрономічної школи, 2013
According to the long-term monitoring on 3 radio band frequencies (4.8, 8 and 14.5 GHz) obtained at the Observatory of the University of Michigan, studied extragalactic radio sources 3C 120, CTA 102, DA 55, and OJ 287.
A. L. Suharev, M. I. Ryabov, A. I. Donskix, M. Aller   +3 more
doaj   +1 more source

Highly Efficient Platinum‐Free Photocatalytic Hydrogen Evolution From Low‐cost Conjugated Polymer Nanoparticles

Advanced Materials, EarlyView.
Platinum‐free hydrogen photocatalysis is achieved using dibenzothiophene‐S,S‐sulfoxide‐based conjugated polymers, self‐assembled into nanoparticles via nanoprecipitation. Through side chain engineering and donor–acceptor design, these materials reach a hydrogen evolution rate of 209 mmol g⁻¹ h⁻¹. The structure–function insights presented here establish
Alexandre Holmes, Jingwen Pan, Li Wang, Leandro Franco, Rafael R. Bicudo, Bo Albinsson, C. Moyses Araujo, Weiguo Zhu, Dongbo Wang, Thuc‐Quyen Nguyen, Jiefang Zhu, Ergang Wang   +11 more
wiley   +1 more source

How to Manufacture Photonic Metamaterials

Advanced Materials Technologies, EarlyView.
Metamaterials boast applications such as invisibility and “hyperlenses” with resolution beyond the diffraction limit, but these applications haven’t been exploited in earnest and the market for them hasn’t grown much likely because facile and economical methods for fabricating them without defect has not emerged.
Apurba Paul, Gregory Timp
wiley   +1 more source

CONNECTION BETWEEN THE CME VELOCITIES AND DECAMETER RADIO BURSTS PARAMETERS FROM URAN-4 OBSERVATIONS

Odessa Astronomical Publications, 2016
The paper reports the results of the research of connection between the coronal mass ejections (CME) with the IV type continual decameter bursts parameters.
V. V. Galanin, E. A. Isaeva, R. O. Kravetz   +2 more
doaj   +1 more source

Toward Advancement of Fabrication Techniques of Neuromorphic Computing Devices Based on 2D Materials

Advanced Materials Technologies, EarlyView.
This review highlights emerging fabrication techniques of 2D material‐based neuromorphic devices, emphasizing proximity vapor transfer for bioinspired optoelectronic applications. Abstract The growing necessity for power‐efficient and cognitive computation mechanisms has driven progress in neuromorphic computing which seeks to imitate the synaptic ...
Shubham Umeshkumar Gupta, Malkeshkumar Patel, Naveen Kumar, László Pohl, Min‐Joon Park, Sung‐Min Youn, Chaewhan Jeong, Joondong Kim   +7 more
wiley   +1 more source

High‐Transmission Mid‐Infrared Bandpass Filters using Hybrid Metal‐Dielectric Metasurfaces for CO2 Sensing

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This article presents a hybrid metal‐dielectric metasurface in transmission mode for mid‐infrared (MIR) spectroscopy. Composed of germanium on aluminium cylinders atop a calcium fluoride substrate, the metasurface achieves 80% transmission efficiency at λ = 2.6 µm with a narrow full‐width‐half‐maximum of 0.4 µm.
Amr Soliman, C Williams, Richard Hopper, Florin Udrea, Haider Butt, Timothy D. Wilkinson   +5 more
wiley   +1 more source

ANALYSIS OF ACTIVE PHASED ANTENNA ARRAY PARAMETERS FOR THE GURT RADIO TELESCOPE

Radio Physics and Radio Astronomy, 2015
The calculation technique results of numerical analysis of parameters of active phased antenna array (APAA) of the Giant Ukrainian Radio Telescope (GURT) of decameter and meter wavelengths which is being built now nearby Kharkiv at the area of S.
P. L. Tokarsky, A. A. Konovalenko, S. N. Yerin   +2 more
doaj   +1 more source

A Dual‐Emissive DNA‐Templated Silver Nanocluster with Near‐Infrared I and II Emission

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study presents a dual‐emissive DNA‐stabilized silver nanocluster with a nanosecond‐lived NIR‐I emission band and a microsecond‐lived NIR‐II emission band. Mass spectrometry establishes that the nanocluster has molecular formula (DNA)2[Ag17]11+. DNA sequence variations reveal critical nucleobases for stabilization, and modifications at the DNA 5 ...
Anna Gonzàlez‐Rosell, Vanessa Rück, Mikkel B. Liisberg, Cecilia Cerretani, Villads R. M. Nielsen, Tom Vosch, Stacy M. Copp   +6 more
wiley   +1 more source

Pressure‐Induced Structural and Optoelectronic Modulations in 2D Dion‐Jacobson Hybrid Lead Iodide Perovskites With a Rigid Spacer

Advanced Optical Materials, EarlyView.
Compression to ≈2.0 GPa results in a non‐monotonic enhancement of the Pb‐I bond distortion, rarely observed in other 2D lead‐iodide hybrid perovskites. The octahedral distortion together with the rigidity of spacer cation are found to play a dominant role in determining the optoelectronic properties of DPDAPbI4 under high pressure.
Aditya Kutty, Jesse Ratté, Rongfeng Guan, Jingyan Liu, Sean Tao, Yanqian Lin, Matthew P. Hautzinger, Willa Mihalyi‐Koch, Song Jin, Yang Song   +9 more
wiley   +1 more source

EVALUATION OF CORONAL SHOCK WAVE VELOCITIES FROM THE II TYPE RADIO BURSTS PARAMETERS

Odessa Astronomical Publications, 2016
The work presents the results of research of connection between the coronal shock waves and the parameters of type II (mII) meter-decameter bursts in 25- 180 MHz band for 66 solar proton events.
V. V. Galanin, E. A. Isaeva, R. O. Kravetz   +2 more
doaj   +1 more source