Results 41 to 50 of about 74,003 (312)

Optical Photometry and Spectroscopy of the Suspected Cool Algol AV Delphini: Determination of the Physical Properties [PDF]

, 2005
We present new spectroscopic and BVRI photometric observations of the double-lined eclipsing binary AV Del ( period = 3:85 days) conducted over six observing seasons.
Mader, Jeff A., Marschall, Laurence A., Rizvi, Akbar H., Torres, Guillermo   +3 more
core   +1 more source

Ion‐Selective Microporous Membranes via One‐Step Copolymerization Enable High‐Performance Redox Flow Batteries

Advanced Functional Materials, EarlyView.
A scalable one‐step copolymerization strategy is developed to produce low‐cost microporous ion exchange membranes that boost both the efficiency and lifespan of flow batteries. When combined with organic electrolytes in aqueous systems, these membranes enable safe and cheap flow battery energy storage, supporting the widespread integration of renewable
Jiaye Liu, Chunchun Ye, Ying Ma, Rui Tan, Xiangwen Wang, Huiting Zhang, Peng Song, Quan‐Fu An   +7 more
wiley   +1 more source

The Challenge to Large Optical Telescopes from X-ray Astronomy [PDF]

, 2002
In the ROSAT era of the mid-1990's, the problems facing deep X-ray surveys could be largely solved with 10 m class telescopes. In the first decade of this new millennium, with X-ray telescopes such as the Chandra X-ray Observatory and XMM-Newton in ...
Hornschemeier, Ann E.
core   +3 more sources

[N i] 10400/10410 Å Lines as Possible Disk Wind Tracers in a Young Intermediate-mass Star

The Astrophysical Journal
In this study, we performed high-resolution near-infrared (NIR) spectroscopy ( R = 28,000; λ = 0.90–1.35 μ m) with a high signal-to-noise ratio on HD 200775, a very young (∼0.1 Myr old) and massive intermediate-mass star (a binary star with a mass of ...
Haruki Katoh, Chikako Yasui, Yuji Ikeda, Naoto Kobayashi, Noriyuki Matsunaga, Sohei Kondo, Hiroaki Sameshima, Satoshi Hamano, Misaki Mizumoto, Hideyo Kawakita, Kei Fukue, Shogo Otsubo, Keiichi Takenaka   +12 more
doaj   +1 more source

Synthesis and Electronic Structure of the Fractionally Occupied Double Perovskite EuTa2O6 with Ordered Europium Vacancies

Advanced Functional Materials, EarlyView.
Two‐dimensional electronic states are the foundation of modern semiconductor technology. Here, we report molecular‐beam epitaxy growth of fractional double perovskite, EuTa2O6. Reciprocal space mapping and transmission electron microscopy confirm a layered ordering of A‐site cations.
Tobias Schwaigert, Ali Barooni, Benjamin Gregory, Paul Malinowski, Anirudh Tenneti, Sonia Hasko, Brenan Palazzolo, Jeffrey W Hodgson, Brendan Faeth, Patrick M. Woodward, Kyle M. Shen, Andrej Singer, Maryam Ghazisaeidi, Salva Salmani‐Rezaie, Darrell G. Schlom, Kaveh Ahadi   +15 more
wiley   +1 more source

High-resolution broadband spectroscopy using externally dispersed interferometry at the Hale telescope: part 2, photon noise theory [PDF]

, 2016
High-resolution broadband spectroscopy at near-infrared (NIR) wavelengths (950 to 2450 nm) has been performed using externally dispersed interferometry (EDI) at the Hale telescope at Mt.
Edelstein, Jerry, Erskine, David J., Lloyd, James P., Muirhead, Philip S., Muterspaugh, Matthew W., Sirk, Martin, Wishnow, Edward   +6 more
core   +2 more sources

Defects Dynamic in Photo‐Excited CeO2 and their Influence on CO2 Photoreduction

Advanced Functional Materials, EarlyView.
X‐ray photoelectron spectroscopy study under light excitation is presented to track the defect dynamic (Ce4+ to Ce3+) in CeO2. Surface enhanced Raman spectroscopy confirmed the key role of Ce3+ states in controlling charge and energy transfer across the CeO2‐dye molecule interface.
Rambabu Yalavarthi, Shashi B. Mishra, Olivier Henrotte, Emiliano Cortes   +3 more
wiley   +1 more source

X-ray astronomical spectroscopy [PDF]

The current status of the X-ray spectroscopy of celestial X-ray sources, ranging from nearby stars to distant quasars, is reviewed. Particular emphasis is placed on the role of such spectroscopy as a useful and unique tool in the elucidation of the ...
Holt, S. S.
core   +4 more sources

Rotational Rest Frequencies and First Astronomical Search of Protonated Methylamine

Frontiers in Astronomy and Space Sciences, 2022
We report first laboratory rest frequencies for rotational transitions of protonated methylamine, CH3NH3+, measured in a cryogenic 22-pole ion trap machine and employing an action spectroscopy scheme.
Philipp C. Schmid, Sven Thorwirth, Christian P. Endres, Matthias Töpfer, Álvaro Sánchez-Monge, Andreas Schwörer, Peter Schilke, Stephan Schlemmer, Oskar Asvany   +8 more
doaj   +1 more source

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

Advanced Functional Materials, EarlyView.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang, Gwendoline A. E. Anand, Rubaiyet Haque, Dylan A. Chiaro, Mona Sharma, Andrew R. Williams, Frank Niklaus, Daryl W. Yee, Gavin M. King, Anpan Han   +9 more
wiley   +1 more source