Results 71 to 80 of about 1,398,922 (322)

Nucleation‐Controlled Reconstruction of CuOx for Selective CO2 Electroreduction

Advanced Functional Materials, EarlyView.
The ratio of oxygen vacancies (Ov) and exposed Cu2O (111)/(200) of CuOx precatalyst is modulated by nucleation control of Cu(OH)2 precursor. Low Ov ratio and high ratio of Cu2O (111)/(200) in slow‐nucleated CuOx reconstructs to high‐coordinated oxide‐derived copper (OD‐Cu) during electrochemical CO2 reduction reaction (CO2RR) and exhibits enhanced ...
Ying Ying Ch'ng, Zhipeng Ma, Ming Zhang, Shujie Zhou, Varun Kundi, Priyank Vijaya Kumar, Wenyu Zhong, Yuwei Yang, Jitraporn Vongsvivut, Qinfen Gu, Xiaoxuan Luo, Lixue Jiang, Rahman Daiyan, Zhaojun Han, Rose Amal   +14 more
wiley   +1 more source

The peculiar nova V1309 Sco/Nova Sco 2008: A candidate twin of V838 Mon

, 2010
Nova Scorpii 2008 was the target of our Directory Discretionary Time proposal at VLT+UVES in order to study the evolution, origin and abundances of the heavy-element absorption system recently discovered in 80% of classical novae in outburst.
Banerjee, Bond, Cardelli, Corradi, E. Mason, Ferland, Frogel, G. Preston, Hamann, Hamuy, Iben, Kaminski, Kastner, M. Diaz, Martini, Mould, Munari, Osterbrock, Osterbrock, R. E. Williams, Rayner, Rich, Rushton, Sanchez Contreras, Sekiguchi, Shen, Soker, Sparks, T. Bensby, Tylenda, Tylenda, Tylenda, Tylenda, Williams, Williams, Williams, Williams   +36 more
core   +1 more source

X-ray observations of classical novae. Theoretical implications [PDF]

, 2009
Detection of X-rays from classical novae, both in outburst and post-outburst, provides unique and crucial information about the explosion mechanism. Soft X-rays reveal the hot white dwarf photosphere, whenever hydrogen (H) nuclear burning is still on and
Balman, Balman, Bode, Bode, Cropper, Dobrotka, Drake, Gutiérrez, Gómez-Gomar, Gónzalez-Riestra, Hachisu, Hachisu, Hachisu, Henze, Hernanz, Hernanz, Hernanz, Hernanz, José, Kato, Kato, Krautter, Leibowitz, Livio, Livio, Lloyd, Nelson, Ness, Ness, Ness, Ness, Ness, Ness, Orio, Orio, Orio, Orio, Pietsch, Prialnik, Sala, Sala, Sala, Sala, Shanley, Shore, Sokoloski, Starrfield, Starrfield, Tatischeff, Tuchman, van Rossum, Yaron, Ögelman, Ögelman   +53 more
core   +2 more sources

Transient Charging of Mixed Ionic‐Electronic Conductors by Anomalous Diffusion

Advanced Materials, EarlyView.
This article explores charge transport in mixed ionic‐electronic conductors (MIECs) through electrochemical impedance spectroscopy and transient current analysis. Focusing on PEDOT:PSS, WO3, and n‐doped PBDF, it uncovers the impact of anomalous diffusion via fractional modeling. The study reveals key correlations that deepen understanding and guide the
Heyi Zhang, Gonzalo Rivera‐Sierra, Shirin Siahjani‐Gultekin, Jenifer Rubio‐Magnieto, Anis Allagui, Ignacio Sanjuán, David Franco, Antonio Guerrero, Enrique H. Balaguera, Juan Bisquert   +9 more
wiley   +1 more source

The Rise of Nova V1674 Herculis

The Astrophysical Journal
Observational constraints on classical novae are heavily biased to phases near optical peak and later because of the simple fact that novae are not typically discovered until they become bright. The earliest phases of brightening, coming before discovery,
Robert M. Quimby, Brian D. Metzger, Ken J. Shen, Allen W. Shafter, Hank Corbett, Madeline Overton   +5 more
doaj   +1 more source

Outstanding problems in nuclear astrophysics: recent progress at TRIUMF

AIP Advances, 2014
Recent experimental and theoretical efforts at TRIUMF on nuclear reactions relevant to big bang nucleosynthesis, quiescent stellar fusion, classical novae, and Type I X-ray bursts are described.
B. Davids
doaj   +1 more source

A Hubble Space Telescope Survey for Novae in M87. I. Light and Color Curves, Spatial Distributions, and the Nova Rate [PDF]

, 2016
The Hubble Space Telescope has imaged the central part of M87 over a 10 week span, leading to the discovery of 32 classical novae (CNe) and nine fainter, likely very slow, and/or symbiotic novae.
Baltz, Edward A., Doyle, Trisha F., Lauer, Tod R., Madrid, Juan P., Mikołajewska, Joanna, Neill, J. D., Shara, Michael M., Welch, D. L., Zurek, David   +8 more
core   +3 more sources

Classical novae vs cataclysmic variables [PDF]

Proceedings of The Golden Age of Cataclysmic Variables and Related Objects - III — PoS(Golden2015), 2017
Proceedings of a talk given at the conference on "The Golden Age of Cataclysmic Variables and Related Objects III", Palermo, Italy, Sep 7-12, 2015; written Dec 2015 and now gone through a belated referee process; 9 pages, 4 figures; to appear in Proceedings of Science (pos.sissa.it)
Tappert, C., Fuentes-Morales, I., Puebla, E., Ederoclite, A., Schmidtobreick, L., Vogt, N.   +5 more
openaire   +2 more sources

Light‐Driven Reconfigurable Logic in a Monolithic Perovskite Device via Nonlinear Photoresponse Switching

Advanced Materials, EarlyView.
This study demonstrates a monolithic perovskite OELG device that performs all eight logic operations, including XOR and XNOR, without external bias. Enabled by trap‐engineered MAPbI3:PLL and dual photogates, it achieves reconfigurable logic and parallel decoding of amplitude–frequency signals, supporting scenario‐configured logic‐level separation for ...
Dante Ahn, Youngsoo Jang, Minz Lee, WooKyung Jeon, Yohan Yoon, Heon Lee, Assa Aravindh Sasikala, Namsoo Lim, Chandran Balamurugan, Hyeonghun Kim, Gun‐Young Jung, Sooncheol Kwon, Minah Seo, Yusin Pak   +13 more
wiley   +1 more source

Fully Self-consistent Nova Explosion Models Reproducing Light Curves of KT Eri, V339 Del, V597 Pup, and SMC NOVA 2016-10a

The Astrophysical Journal
The rising phase toward the optical maximum of a classical nova is one of the last frontiers of nova study. Constructing free–free emission model light curves based on our fully self-consistent nova explosion models, we present several theoretical light ...
Mariko Kato, Izumi Hachisu, Hideyuki Saio   +2 more
doaj   +1 more source