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arXiv 2022年

作者： Ye, Chen Xie, Xiangnan Lv, Wenxing Huang, Ke Yang, Allen Jian Jiang, Sicong Liu, Xue Zhu, Dapeng Qiu, Xuepeng Tong, Mingyu Zhou, Tong Hsu, Chuang-Han Chang, Guoqing Lin, Hsin Li, Peisen Yang, Kesong Wang, Zhenyu Jiang, Tian Wang, Xiao Renshaw Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore State Key Laboratory of High Performance Computing College of Computer Science and Technology National University of Defense Technology Changsha410073 China Physics Laboratory Industrial Training Center Shenzhen Polytechnic Guangdong Shenzhen518055 China Department of NanoEngineering Program of Chemical Engineering University of California La Jolla San DiegoCA92093-0448 United States Program of Materials Science and Engineering University of California La Jolla San DiegoCA92093-0418 United States Institutes of Physical Science and Information Technology Anhui University Hefei230601 China Fert Beijing Institute MIIT Key Laboratory of Spintronics School of Integrated Circuit Science and Engineering Beihang University Beijing100191 China Beihang-Goertek Joint Microelectronics Institute Qingdao Research Institute Beihang University Qingdao266000 China Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and Engineering Tongji University Shanghai200092 China College of Advanced Interdisciplinary Studies National University of Defense Technology Changsha410073 China Insitute of Physics Academia Sinica Taipei115229 Taiwan College of Intelligence Science and Technology National University of Defense Technology Changsha410073 China National Innovation Institute of Defense Technology Academy of Military Sciences PLA China Beijing100010 China Beijing Academy of Quantum Information Sciences Beijing100084 China Beijing Institute for Advanced Study National University of Defense Technology Changsha410073 China School of Electrical and Electronic Engineering Nanyang Technological University 50 Nanyang Ave 639798 Singapore

MnBi2Te4 (MBT) is the first intrinsic magnetic topological insulator with the interaction of spin-momentum locked surface electrons and intrinsic magnetism, and it exhibits novel magnetic and topological phenomena. Recent studies suggested that the interaction of electrons and magnetism can be affected by the Mn-doped Bi2Te3 phase at the surface due to inevitable structural defects. Here we report an observation of nonreciprocal transport, i.e. current-direction-dependent resistance, in a bilayer composed of antiferromagnetic MBT and nonmagnetic Pt. The emergence of the nonreciprocal response below the Néel temperature confirms a correlation between nonreciprocity and intrinsic magnetism in the surface state of MBT. The angular dependence of the nonreciprocal transport indicates that nonreciprocal response originates from the asymmetry scattering of electrons at the surface of MBT mediated by magnon. Our work provides an insight into nonreciprocity arising from the correlation between magnetism and Dirac surface electrons in intrinsic magnetic topological insulators. © 2022, CC BY.

关键词： Magnetism

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Localized growth drives spongy mesophyll morphogenesis

arXiv

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arXiv 2022年

作者： Treado, John D. Roddy, Adam B. Théroux-Rancourt, Guillaume Zhang, Liyong Ambrose, Chris Brodersen, Craig Shattuck, Mark D. O’Hern, Corey S. Department of Mechanical Engineering & Materials Science Integrated Graduate Program in Physical and Engineering Biology Yale University New HavenCT06520 United States Institute of Environment Department of Biological Sciences Florida International University MiamiFL33199 United States University of Natural Resources and Life Sciences Vienna Department of Integrative Biology and Biodiversity Research Institute of Botany Vienna1180 Austria Department of Biology College of Arts and Science University of Saskatchewan SaskatoonS7N 5E2 Canada School of the Environment Yale University New HavenCT06520 United States Department of Physics Benjamin Levich Institute City College of New York New YorkNY10031 United States Department of Physics Department of Applied Physics Yale University New HavenCT06520 United States

The spongy mesophyll is a complex, porous tissue found in plant leaves that enables carbon capture and provides mechanical stability. Unlike many other biological tissues, which remain confluent throughout development, the spongy mesophyll must develop from an initially confluent tissue into a tortuous network of cells with a large proportion of intercellular airspace. How the airspace in the spongy mesophyll develops while the cells remain mechanically stable remains unknown. Here, we used computer simulations of deformable particles to develop a purely mechanical model for the development of the spongy mesophyll tissue. By stipulating that (1) cell perimeter grows only near voids, (2) cells both form and break adhesive bonds, and (3) the tissue pressure remains constant, the computational model was able to recapitulate the developmental trajectory of the microstructure of the spongy mesophyll observed in Arabidopsis thaliana leaves. Robust generation of pore space in the spongy mesophyll requires a balance of cell growth, adhesion, stiffness and tissue pressure to ensure cell networks remain both porous yet mechanically robust. The success of this mechanical model of tissue growth and porosity evolution suggests that simple physical principles can coordinate and drive the development of complex plant tissues like the spongy mesophyll. © 2022, CC BY.

关键词： Tissue

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Reuse of Domestic Wastewater by Membrane Technologies towards Sustainable City Development 1

Reuse of Domestic Wastewater by Membrane Technologies toward...

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1st International Conference on Smart City Innovation, ICSCI 2018

作者： Nofiana Raharjo, S.H. Istirokhatun, T. Susanto, H. Integrated Laboratory for Research and Services Diponegoro University Semarang Indonesia Master Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Environmental Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Jl. Prof Soedarto SH Tembalang Semarang Indonesia

Supply of sustainable clean water is an activity that must be carried out towards smart cities. Nevertheless, the availability of water is decreasing both in quality and quantity. Wastewater including domestic wastewater is a potential source that can be reused as clean water supply dealing with water scarcity. This is due to domestic wastewater is produced continuously in large amount. In addition, reuse can reduce the total cost of handling wastewater. One modern technology that can be used for domestic wastewater treatment is membrane technology. Characteristics, various types, advantages, disadvantages, and challenges of membrane technology for domestic wastewater were discussed. This paper presents a review of domestic wastewater reuse by using membrane technology. More specifically this paper discusses domestic wastewater. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Membrane technology

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Atomic-Scale Dynamics of the Initial Stages of Cu and Cu Alloy Oxidation

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Microscopy and Microanalysis 2024年第SUPPLEMENT_1期30卷

作者： Yang, Judith C Li, Meng Zakharov, Dmitri N McEver, Jack Greene Qiao, Linna Qu, Xiaohui Lu, Deyu Curnan, Matthew T House, Stephen D Gleason, Samuel Ciston, Jim Zhou, Guangwen Saidi, Wissam A Chemical and Petroleum Engineering Department University of Pittsburgh Pittsburgh PA United States Physics and Astronomy Department University of Pittsburgh Pittsburgh PA United States Center for Functional Nanomaterials Brookhaven National Lab Upton NY United States Materials Science and Engineering Program & Department of Mechanical Engineering State University of New York at Binghamton Binghamton NY United States Chemical Engineering Department Pohang University of Science and Technology (POSTECH) Pohang Gyeongbuk Republic of Korea Center for Integrated Nanotechnologies Sandia National Laboratories Albuquerque NM United States Chemistry Department University of California Berkeley CA United States National Center for Electron Microscopy The Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA United States Mechanical Engineering and Materials Science Department University of Pittsburgh Pittsburgh PA United States National Energy Technology Laboratory Pittsburgh PA United States

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Rare distribution of butenolide-type signaling molecules among Streptomyces strains and functional importance as inducing factors for secondary metabolite production in Streptomyces rochei 7434AN4

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The Journal of Antibiotics 2025年 1-12页

作者： Asahi Hirata Momoko Akimoto Mary Hannah Rose A. Padayao Yuto Eguchi Aiko Teshima Kenji Arakawa Hazuki Fujita Miho Sumiyoshi Maki Matsuura Miyuki Otsuka Kuninobu Inada Program of Biotechnology Graduate School of Integrated Sciences for Life Hiroshima University Hiroshima Japan Hiroshima Research Center for Healthy Aging (HiHA) Hiroshima University Hiroshima Japan Department of Molecular Biotechnology Graduate School of Advanced Sciences of Matter Hiroshima University Hiroshima Japan Faculty of Engineering Hiroshima University Hiroshima Japan College of Agriculture Tamagawa University Machida Tokyo Japan Natural Science Center for Basic Research and Development Hiroshima University Hiroshima Japan

Streptomyces rochei7434AN4 produces two structurally unrelated polyketide antibiotics, lankacidin (LC) and lankamycin (LM), and their biosynthesis is tightly controlled by 2,3-disubstituted butenolide-type signaling molecules SRB1 and SRB2. We here investigated the distribution of 2,3-disubstituted butenolides (SRB-type butenolides) among randomly selected 122Streptomycesstrains using two approaches; (1) feeding of their culture extracts into ansrrX-deficient strain KA20 ofS. rochei, and (2) co-fermentation with strain KA20. All the randomly selected donor strains, except forStreptomyces cellostaticus(a LC and LM producer), failed to restore LC and LM production in strain KA20. These findings strongly revealed the rare distribution of SRB-type butenolide molecules inStreptomycesspecies. One of the SRB-type butenolide, SAB1, an inducing molecule for nikkomycin production inStreptomyces ansochromogenes, was unable to restore antibiotic production in strain KA20 even at 1 mM concentration. Furthermore, we noticed the accumulation of 4-dehydroxy-SRB1 as a novel compound when SRB1 was fed into strain KA20. Purified 4-dehydroxy-SRB1 has no inducing activity of antibiotic production in strain KA20 even at 1000-fold higher concentration (50 µM) against a minimum inducing concentration of natural SRB1 (40 nM). These findings suggested the importance of the length of a hydrocarbon chain attached at C-2 and a hydroxyl group at C-4 for inducing activity inS. rochei.

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Vernacular biotechnologies

Research Directions: Biotechnology Design

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Research Directions: Biotechnology Design 2022年 1卷 e5-e5页

作者： Elizabeth M. Hénaff New York University Tandon School of Engineering New York New York USA Department of Technology Culture and Society Brooklyn New York USA Integrated Design and Media Program Brooklyn New York USA Center for Urban Science and Progess Brooklyn New York USA

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Influence of Potassium Metal-Support Interactions on Dendrite Growth

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Angewandte Chemie 2023年第23期135卷

作者： Pengcheng Liu Dean Yen Bairav S. Vishnugopi Varun R. Kankanallu Doğa Gürsoy Mingyuan Ge John Watt Partha P. Mukherjee Yu-chen Karen Chen-Wiegart David Mitlin Materials Science and Engineering Program & Texas Materials Institute (TMI) The University of Texas at Austin Austin TX 78712-1591 USA Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook NY 11794 USA School of Mechanical Engineering Purdue University West Lafayette IN 47907 USA Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA National Synchrotron Light Source II (NSLS-II) Brookhaven National Laboratory Upton NY 11973-5000 USA Center for Integrated Nanotechnologies Los Alamos National Laboratory Los Alamos NM 87545 USA

Combined synchrotron X-ray nanotomography imaging, cryogenic electron microscopy (cryo-EM) and modeling elucidate how potassium (K) metal-support energetics influence electrodeposit microstructure. Three model supports are employed: O-functionalized carbon cloth (potassiophilic, fully-wetted), non-functionalized cloth and Cu foil (potassiophobic, nonwetted). Nanotomography and focused ion beam (cryo-FIB) cross-sections yield complementary three-dimensional (3D) maps of cycled electrodeposits. Electrodeposit on potassiophobic support is a triphasic sponge, with fibrous dendrites covered by solid electrolyte interphase (SEI) and interspersed with nanopores (sub-10 nm to 100 nm scale). Lage cracks and voids are also a key feature. On potassiophilic support, the deposit is dense and pore-free, with uniform surface and SEI morphology. Mesoscale modeling captures the critical role of substrate-metal interaction on K metal film nucleation and growth, as well as the associated stress state.

关键词： Metal Dendrite Potassium Ion Battery Potassium Metal Battery Potassium Sulfur Battery

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Cover Picture: Influence of Potassium Metal-Support Interactions on Dendrite Growth (Angew. Chem. Int. Ed. 23/2023)

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Angewandte Chemie International Edition 2023年第23期62卷

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Titelbild: Influence of Potassium Metal-Support Interactions on Dendrite Growth (Angew. Chem. 23/2023)

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Angewandte Chemie 2023年第23期135卷

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Electronic and magnetic properties of the topological semimetal candidate NdSbTe

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Physical Review B 2020年第23期101卷 235161-235161页

作者： Krishna Pandey Rabindra Basnet Aaron Wegner Gokul Acharya Md Rafique Un Nabi Jiangwei Liu Jian Wang Y. K. Takahashi Bo Da Jin Hu Materials Science and Engineering Program Institute for Nanoscience and Engineering University of Arkansas Fayetteville Arkansas 72701 USA Department of Physics University of Arkansas Fayetteville Arkansas 72701 USA Research Center for Functional Materials National Institute for Materials Science Tsukuba Ibaraki 305-0047 Japan Institute for Materials Research and Center for Spintronics Research Network Tohoku University Sendai 980–8577 Japan Research Center for Magnetic and Spintronic Materials National Institute for Materials Science Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan Research and Services Division of Materials Data and Integrated System National Institute for Materials Science Tsukuba Ibaraki 305-0044 Japan

ZrSiS-type materials represent a large material family with unusual coexistence of topological nonsymmorphic Dirac fermions and nodal-line fermions. As a special group of ZrSiS family, LnSbTe (Ln=lanthaniderare−earth) compounds provide a unique opportunity to explore new quantum phases due to the intrinsic magnetism induced by Ln. Here we report the single-crystal growth and characterization of NdSbTe, a previously unexplored LnSbTe compound. NdSbTe has an antiferromagnetic ground state with field-driven metamagnetic transitions similar to other known LnSbTe, but exhibits distinct enhanced electronic correlations characterized by large a Sommerfeld coefficient of 115mJ/molK2, which is the highest among the known LnSbTe compounds. Furthermore, our transport studies have revealed the coupling with magnetism and signatures of Kondo localization. All these findings establish NdSbTe as a platform for observing phenomena arising from the interplay between magnetism, topology, and electron correlations.

关键词： Magnetic order Magnetotransport Topological phases of matter Magnetic systems Single crystal materials Strongly correlated systems Topological materials Magnetic techniques Specific heat measurements Transport techniques

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