中国科学院机构知识库网格系统: 检索

The enhanced X-ray Timing and Polarimetry mission - eXTP: an update on its scientific cases, mission profile and development status 期刊论文 OAI收割
SPACE TELESCOPES AND INSTRUMENTATION 2022: ULTRAVIOLET TO GAMMA RAY, 2022, 卷号: 12181, 页码: 121811W
作者: eXTP

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收藏 | 浏览/下载：3/0 | 提交时间：2023/11/09

black hole neutron star X-ray timing X-ray polarimetry equation of state extreme gravity extreme magnetism extreme density

The enhanced X-ray Timing and Polarimetry mission - eXTP: an update on its scientific cases, mission profile and development status 会议论文 OAI收割
Montreal, CANADA, 2022-07-17
作者: Zhang, Shuang-Nan; Santangelo, Andrea; Xu, Yupeng; Feroci, Marco; Hernanz, Margarita

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收藏 | 浏览/下载：110/0 | 提交时间：2022/11/22

black hole neutron star X-ray timing X-ray polarimetry equation of state extreme gravity extreme magnetism extreme density

Molecular design of dibenzo[g,p]chrysene-based hole-transporting materials for perovskite solar cells: A theoretical study 期刊论文 OAI收割
SYNTHETIC METALS, 2021, 卷号: 271, 页码: 10
作者: Sun, Zhu-Zhu; Feng, Shuai; Ding, Wei-Lu; Peng, Xing-Liang; Guan, Jian

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收藏 | 浏览/下载：25/0 | 提交时间：2021/03/29

Perovskite solar cells Hole-transporting materials pi-Conjugation Fluorene moiety Density functional theory

Probing impacts of pi-conjugation and multiarm on the performance of two-dimensionally expanded small molecule hole-transporting materials: A theoretical investigation 期刊论文 OAI收割
SYNTHETIC METALS, 2020, 卷号: 259, 页码: 10
作者: Sun, Zhu-Zhu; Feng, Shuai; Ding, Wei-Lu

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收藏 | 浏览/下载：36/0 | 提交时间：2020/03/24

Perovskite solar cells Hole-transporting materials pi-Conjugation Charge transfer Density functional theory

An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文 OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者: HXMT

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收藏 | 浏览/下载：49/0 | 提交时间：2022/02/08

accretion accretion disks black hole physics X-rays: binaries time Astrophysics - High Energy Astrophysical Phenomena Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.

Raman spectroscopic determination of hole concentration in undoped GaAsBi 期刊论文 OAI收割
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2019, 卷号: 34, 期号: 1, 页码: 15008
作者: Zhu Sixin; Qiu Weiyang; Wang Han; Lin Tie; Chen Pingping

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收藏 | 浏览/下载：34/0 | 提交时间：2019/11/13

GaAsBi Raman spectroscopy LO-phonon-plasmon-modes Hole density Hall measurements

Theoretical study of charge-transport and optical properties of indeno[1,2-b] fluorene-6,12-dione-based semiconducting materials 期刊论文 OAI收割
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 2018, 卷号: 74, 页码: 705-711
作者: Cheng, Shi-Bo; Huang, Jin-Dou; Zhao, Jinfeng; Yu, Kun; Huang, Xiaohua

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收藏 | 浏览/下载：36/0 | 提交时间：2019/06/20

indeno[1,2-b] fluorene-6,12-dione-based molecules intrinsic hole mobility intrinsic electron mobility electronic spectra density functional theory (DFT) structure-function relationship

Theoretical study of charge-transport and optical properties of indeno[1,2-b] fluorene-6,12-dione-based semiconducting materials 期刊论文 iSwitch采集
Acta crystallographica section b-structural science crystal engineering and materials, 2018, 卷号: 74, 页码: 705-711
作者: Huang, Jin-Dou; Zhao, Jinfeng; Yu, Kun; Huang, Xiaohua; Cheng, Shi-Bo

收藏 | 浏览/下载：64/0 | 提交时间：2019/05/08

Indeno[1,2-b] fluorene-6,12-dione-based molecules Intrinsic hole mobility Intrinsic electron mobility Electronic spectra Density functional theory (dft) Structure-function relationship

Prediction of phonon-mediated superconductivity in hole-doped black phosphorus 期刊论文 OAI收割
Journal of Physics: Condensed Matter, 2018, 卷号: 30, 期号: 1, 页码: 015601(1-6)
作者: Feng, Yanqing; Sun, Hongyi; Sun JH(孙军辉); Lu ZB(鲁志斌); You, Yong

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收藏 | 浏览/下载：22/0 | 提交时间：2018/06/11

Hole-doped Black Phosphorus Bcs Superconductivity Density Functional Calculations

Application of Polarizable Ellipsoidal Force Field Model to Pnicogen Bonds 期刊论文 OAI收割
JOURNAL OF COMPUTATIONAL CHEMISTRY, 2015, 卷号: 36, 期号: 7, 页码: 441—448
作者: Liu, F; Du, LK; Gao, J; Wang, LL; Song, B

收藏 | 浏览/下载：17/0 | 提交时间：2015/12/09

SYMMETRY-ADAPTED PERTURBATION CENTER-DOT-N DENSITY-FUNCTIONAL THEORY HYDROGEN-BOND ELECTRON-DONORS SIGMA-HOLE NONCOVALENT INTERACTION MOLECULAR-MECHANICS CORRELATION-ENERGY HALOGEN BONDS