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作者：Kupferschmidt, Kai
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作者：Thorp, H. Holden
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作者：Upadhyay, Pranshoo; Suarez-Forero, Daniel G.; Huang, Tsung-Sheng; Mehrabad, Mahmoud Jalali; Gao, Beini; Sarkar, Supratik; Session, Deric; Watanabe, Kenji; Taniguchi, Takashi; Zhou, You; Knap, Michael; Hafezi, Mohammad
作者单位：University System of Maryland; University of Maryland College Park; University of Geneva; National Institute for Materials Science; University System of Maryland; University of Maryland College Park; Technical University of Munich
摘要：Bose-Fermi mixtures can be realized in semiconductor heterostructures, with bosons as excitons and fermions as dopant charges. However, the complexity of these hybrid systems challenges understanding of the mechanisms that determine properties such as mobility. We investigated interlayer exciton diffusion in tungsten diselenide-tungsten disulfide heterobilayers at ultralow exciton density and low temperatures to examine how charges affect exciton mobility. Near the electronic Mott insulator ph...
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作者：Zhong, Hai; Wang, Shiyu; Zhang, Qinghua; Liu, Zhuohui; Xie, Donggang; Lu, Jiali; Jin, Shifeng; Zhang, Shufang; Guo, Er-jia; He, Meng; Wang, Can; Gu, Lin; Yang, Guozhen; Jin, Kui-juan; Ge, Chen
作者单位：Chinese Academy of Sciences; Nanjing Institute of Geology & Paleontology, CAS; Institute of Physics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Tsinghua University; Tsinghua University
摘要：Ferroelectric charged domain walls (CDWs) with nanoscale thickness and bound charges are typically viewed as ultrathin, reconfigurable, and highly conductive two-dimensional components for domain wall nanoelectronics. Dimensional confinement of such polar topological structures has the potential to increase device density and unlock novel functionalities. We report 180 degrees head-to-head and tail-to-tail CDWs exhibiting one-dimensional (1D) characteristics. These 1D CDWs are confined within ...
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作者：Fernando, Benjamin; Charalambous, Constantinos
作者单位：Johns Hopkins University; Imperial College London
摘要：The risks posed by reentering space debris continue to grow as Earth's orbit becomes more crowded. Currently, responses to uncontrolled reentries are hampered by an inability to reliably track spacecraft once they are burning up within the atmosphere, meaning that debris fallout locations are poorly predicted. We have demonstrated a minimum-gradient fit seismic inversion methodology that allows in-atmosphere debris trajectory, speed, altitude, descent angle, size, and fragmentation pattern to ...
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作者：Ayuk, Elias T.
作者单位：Stellenbosch University; Stellenbosch University
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作者：Matsui, Hiroki; Miyazawa, Yuki; Goto, Ryoto; Nakano, Chihiro; Kawaguchi, Yuki; Ueda, Masahito; Kozuma, Mikio
作者单位：Institute of Science Tokyo; Institute of Science Tokyo; Nagoya University; Nagoya University; University of Tokyo
摘要：The Einstein-de Haas effect is a phenomenon in which angular momentum is transferred from microscopic spins to mechanical rotation of a macroscopic rigid body. We report an observation of the Einstein-de Haas effect in a spinor-dipolar Bose-Einstein condensate, in which the intrinsic magnetic dipole-dipole interaction mediates coherent transfer of angular momentum from atomic spins to collective circulation of a quantum fluid. The depolarized spinor components displayed ring-shaped density dis...
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作者：Kalas, Paul; Wang, Jason J.; Millar-Blanchaer, Maxwell A.; Ren, Bin B.; Wyatt, Mark C.; Kennedy, Grant M.; Sommer, Maximilian; Esposito, Thomas M.; De Rosa, Robert J.; Fitzgerald, Michael
作者单位：University of California System; University of California Berkeley; Foundation for Research & Technology - Hellas (FORTH); Northwestern University; Northwestern University; University of California System; University of California Santa Barbara; Xiamen University; Universite Cote d'Azur; Observatoire de la Cote d'Azur; Max Planck Society; University of Cambridge; Malaghan Institute; Victoria University Wellington; University of Warwick; European Southern Observatory; University of California System; University of California Los Angeles
摘要：The nearby star Fomalhaut is orbited by a compact source, Fomalhaut b, which has previously been interpreted as either a dust-enshrouded exoplanet or a dust cloud generated by the collision of two planetesimals. Such collisions are rarely observed, but their debris can appear in direct imaging. We report Hubble Space Telescope observations that show the appearance in 2023 of a second point source around Fomalhaut, resembling the appearance of Fomalhaut b 20 years earlier. We interpret this add...
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作者：Matsumoto, Hironao; Watanabe, Yasuto; Coccioni, Rodolfo; Frontalini, Fabrizio; Yoshimura, Toshihiro; Kuroda, Junichiro; Suzuki, Katsuhiko
作者单位：University of Tsukuba; Japan Agency for Marine-Earth Science & Technology (JAMSTEC); National Institute for Environmental Studies - Japan; University of Urbino; University of Urbino; University of Tokyo; Fukushima University
摘要：Tectonic events and volcanic pulses forming large igneous provinces (LIPs) have altered Earth's paleoclimate. Osmium (Os) and strontium (Sr) isotopic ratios are key tracers of past continental weathering and LIP eruptions. However, limited Cretaceous seawater Os and riverine Os-Sr data have hindered quantitative reconstructions. In this study, we present a long-term Os isotopic record from the Cretaceous to the present, revealing similar to 10- to 20-million-year cycles during the Cretaceous t...
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作者：Mironova, Yevgeniya A.; Dang, Brendan; Heo, Dongeun; Xu, Yu Kang T.; Hsu, Angela Yu-Huey; von Bernhardi, Jaime Eugenin; Molina-Castro, Gian Carlo; Kim, Anya A.; Lin, Jing-Ping; Reich, Daniel S.; Bergles, Dwight E.
作者单位：Johns Hopkins University; Johns Hopkins Medicine; Washington University (WUSTL); Oregon Health & Science University; Johns Hopkins University; National Institutes of Health (NIH) - USA; NIH National Institute of Neurological Disorders & Stroke (NINDS); Harvard University; Howard Hughes Medical Institute; Harvard Medical School
摘要：Oligodendrocytes form myelin sheaths around axons to enable rapid signaling within neural circuits. The generation of new oligodendrocytes through differentiation of oligodendrocyte precursor cells (OPCs) promotes myelin plasticity and repair in the adult brain. Here, we performed genetic interrogation and in vivo analysis of OPCs in the mouse brain to determine their differentiation dynamics. Our results show that OPCs attempt to differentiate throughout the adult central nervous system with ...
