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作者：Albrecht, Florian; Roncevic, Igor; Gao, Yueze; Paschke, Fabian; Baiardi, Alberto; Tavernelli, Ivano; Mishra, Shantanu; Anderson, Harry L.; Gross, Leo
作者单位：University of Oxford
摘要：Molecular rings of N carbon atoms (cyclo[N]carbons, or C-N) are excellent benchmarking systems for testing quantum chemical theoretical methods and valuable precursors to other carbon-rich materials. Odd-N cyclocarbons, which have been elusive to date, are predicted to be even less stable than even-N cyclocarbons. We report the on-surface synthesis of cyclo[13]carbon, C-13, by manipulation of decachlorofluorene with a scanning probe microscope tip. We elucidated the properties of C-13 by exper...
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作者：Brainard, Jeffrey; Chakradhar, Shraddha
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作者：Anazodo, Udunna C.; Plessis, Stefan du
作者单位：McGill University; Stellenbosch University
摘要：Low-field magnetic resonance imaging can be engineered for widespread point-of-care diagnostics
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作者：Han, Tonghang; Lu, Zhengguang; Yao, Yuxuan; Yang, Jixiang; Seo, Junseok; Yoon, Chiho; Watanabe, Kenji; Taniguchi, Takashi; Fu, Liang; Zhang, Fan; Ju, Long
作者单位：Massachusetts Institute of Technology (MIT); University of Texas System; University of Texas Dallas; National Institute for Materials Science; National Institute for Materials Science
摘要：The quantum anomalous Hall effect (QAHE) is a robust topological phenomenon that features quantized Hall resistance at zero magnetic field. We report the QAHE in a rhombohedral pentalayer graphene-monolayer tungsten disulfide (WS2) heterostructure. Distinct from other experimentally confirmed QAHE systems, this system has neither magnetic element nor moir & eacute; superlattice effect. The QAH states emerge at charge neutrality and feature Chern numbers C = +/- 5 at temperatures of up to about...
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作者：Brainard, Jeffrey; Chakradhar, Shraddha
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作者：Holstad, Agnes; Voje, Kjetil L.; Opedal, Oystein H.; Bolstad, Geir H.; Bourg, Salome; Hansen, Thomas F.; Pelabon, Christophe
作者单位：Norwegian University of Science & Technology (NTNU); University of Oslo; Lund University; Norwegian Institute Nature Research; University of Oslo
摘要：Heritable variation is a prerequisite for evolutionary change, but the relevance of genetic constraints on macroevolutionary timescales is debated. By using two datasets on fossil and contemporary taxa, we show that evolutionary divergence among populations, and to a lesser extent among species, increases with microevolutionary evolvability. We evaluate and reject several hypotheses to explain this relationship and propose that an effect of evolvability on population and species divergence can...
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作者：Kupferschmidt, Kai
摘要：Novel effort comes as study finds key receptor for avian flu virus in udders, where the virus flourishes
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作者：Li, Ailong; Kong, Shuang; Adachi, Kiyohiro; Ooka, Hideshi; Fushimi, Kazuna; Jiang, Qike; Ofuchi, Hironori; Hamamoto, Satoru; Oura, Masaki; Higashi, Kotaro; Kaneko, Takuma; Uruga, Tomoya; Kawamura, Naomi; Hashizume, Daisuke; Nakamura, Ryuhei
作者单位：RIKEN; RIKEN; Westlake University; Chinese Academy of Sciences; Dalian Institute of Chemical Physics, CAS; Japan Synchrotron Radiation Research Institute; RIKEN; University of Electro-Communications - Japan; Institute of Science Tokyo; Tokyo Institute of Technology
摘要：Hexavalent iridium (Ir-VI) oxide is predicted to be more active and stable than any other iridium oxide for the oxygen evolution reaction in acid; however, its experimental realization remains challenging. In this work, we report the synthesis, characterization, and application of atomically dispersed IrVI oxide (Ir-VI-ado) for proton exchange membrane (PEM) water electrolysis. The Ir-VI-ado was synthesized by oxidatively substituting the ligands of potassium hexachloroiridate(IV) (K2IrCl6) wi...
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作者：Brainard, Jeffrey; Chakradhar, Shraddha
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作者：Faulkner, Larry R.
作者单位：University of Texas System; University of Texas Austin
摘要：Father of contemporary electrochemistry
