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Spectral evidence for unidirectional charge density wave in detwinned BaNi2As2

Physical Review B 2023年第8期108卷 L081104-L081104页

作者： Yucheng Guo Mason Klemm Ji Seop Oh Yaofeng Xie Bing-Hua Lei Luca Moreschini Cheng Chen Ziqin Yue Sergey Gorovikov Tor Pedersen Matteo Michiardi Sergey Zhdanovich Andrea Damascelli Jonathan Denlinger Makoto Hashimoto Donghui Lu Chris Jozwiak Aaron Bostwick Eli Rotenberg Sung-Kwan Mo Rob G. Moore Junichiro Kono Robert J. Birgeneau David J. Singh Pengcheng Dai Ming Yi Department of Physics and Astronomy Rice University Houston Texas 77005 USA Advanced Light Source Lawrence Berkeley National Laboratory Berkeley California 94720 USA Department of Physics University of California Berkeley California 94720 USA Department of Physics and Astronomy University of Missouri Columbia Missouri 65211 USA Materials Science Division Lawrence Berkeley National Laboratory Berkeley California 94720 USA Department of Physics University of Oxford Oxford OX1 3PU United Kingdom Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston Texas 77005 USA Canadian Light Source Inc. 44 Innovation Boulevard Saskatoon SK S7N 2V3 Canada Department of Physics and Astronomy University of British Columbia Vancouver British Columbia V6T 1Z1 Canada Quantum Matter Institute University of British Columbia Vancouver British Columbia V6T 1Z4 Canada Max Planck Institute for Chemical Physics of Solids Nöthnitzer Straße 40 01187 Dresden Germany Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park California 94025 USA Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Department of Electrical and Computer Engineering Rice University Houston Texas 77005 USA Smalley-Curl Institute Rice University Houston Texas 77005 USA Department of Materials Science and NanoEngineering Rice University Houston Texas 77005 USA Department of Chemistry University of Missouri Columbia Missouri 65211 USA

In the iron-based superconductors, unconventional superconductivity emerges in proximity to intertwined electronic orders consisting of an electronic nematic order and a spin density wave (SDW). Recently, BaNi2As2, like its well-known iron-based analog BaFe2As2, has been discovered to host a symmetry-breaking structural transition but coupled to a unidirectional charge density wave (CDW) instead of SDW, providing a novel platform to study intertwined orders. Here, through a systematic angle-resolved photoemission spectroscopy study combined with a detwinning B1g uniaxial strain, we identify distinct spectral evidence of band evolution due to the structural transition as well as CDW-induced band folding. In contrast to the nematicity and spin density wave in BaFe2As2, the structural and CDW order parameters in BaNi2As2 are observed to be strongly coupled and do not separate in the presence of uniaxial strain. Furthermore, no nematic band splitting is resolved above the structural transition. Our measurements point to a likely lattice origin of the CDW order in BaNi2As2.

关键词： Charge density waves Nematic phase transition Iron-based superconductors Angle-resolved photoemission spectroscopy

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Author Correction: Light-based vat-polymerization bioprinting

Nature Reviews Methods Primers

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Nature Reviews Methods Primers 2024年第1期4卷 1页

作者： Riccardo Levato Oksana Dudaryeva Carlos Ezio Garciamendez-Mijares Yu Shrike Zhang Bruce E. Kirkpatrick Kristi S. Anseth Riccardo Rizzo Marcy Zenobi-Wong Jacob Schimelman Shaochen Chen Department of Clinical Sciences Faculty of Veterinary Medicine Utrecht University Utrecht Netherlands Department of Orthopedics University Medical Center Utrecht Utrecht Netherlands Division of Engineering in Medicine Brigham and Women’s Hospital Department of Medicine Harvard Medical School Cambridge MA USA Department of Chemical and Biological Engineering University of Colorado Boulder Boulder CO USA BioFrontiers Institute University of Colorado Boulder Boulder CO USA Medical Scientist Training Program University of Colorado Anschutz Medical Campus Aurora CO USA Department of Health Sciences and Technology ETH Zürich Zürich Switzerland Wyss Institute for Biologically Inspired Engineering Harvard University Boston MA USA Harvard John A. Paulson School of Engineering and Applied Sciences Harvard University Boston MA USA Department of NanoEngineering University of California San Diego La Jolla CA USA

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Author Correction: Human and environmental safety of carbon nanotubes across their life cycle

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Nature Reviews Materials 2024年 374页

作者： Mijin Kim Dana Goerzen Prakrit V. Jena Emma Zeng Daniel A. Heller Matteo Pasquali Rachel A. Meidl Molecular Pharmacology Program Memorial Sloan Kettering Cancer Center New York NY USA School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA USA Department of Physiology Biophysics and Systems Biology Weill Cornell Medicine Cornell University New York NY USA Department of Pharmacology Weill Cornell Medicine Cornell University New York NY USA Department of Chemical and Biomolecular Engineering Rice University Houston TX USA Carbon Hub Rice University Houston TX USA Department of Chemistry Rice University Houston TX USA Department of Materials Science and NanoEngineering Rice University Houston TX USA Smalley-Curl Institute Rice University Houston TX USA Baker Institute for Public Policy Rice University Houston TX USA

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Nonreciprocal transport in a bilayer of MnBi2Te4 and Pt

arXiv

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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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engineering chirality at wafer scale with ordered carbon nanotube architectures

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Nature communications 2023年第1期14卷 7380页

作者： Jacques Doumani Minhan Lou Oliver Dewey Nina Hong Jichao Fan Andrey Baydin Keshav Zahn Yohei Yomogida Kazuhiro Yanagi Matteo Pasquali Riichiro Saito Junichiro Kono Weilu Gao Department of Electrical and Computer Engineering Rice University Houston TX USA. Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston TX USA. Department of Electrical and Computer Engineering The University of Utah Salt Lake City UT USA. Carbon Hub Rice University Houston TX USA. Department of Chemical and Biomolecular Engineering Rice University Houston TX USA. J.A. Woollam Co. Inc. Lincoln NE USA. Smalley-Curl Institute Rice University Houston TX USA. Department of Physics Tokyo Metropolitan University Tokyo Japan. Department of Chemistry Rice University Houston TX USA. Department of Materials Science and NanoEngineering Rice University Houston TX USA. Department of Physics Tohoku University Sendai Japan. Department of Physics National Taiwan Normal University Taipei Taiwan. Department of Physics and Astronomy Rice University Houston TX USA. Department of Electrical and Computer Engineering The University of Utah Salt Lake City UT USA. weilu.gao@utah.edu. Carbon Hub Rice University Houston TX USA. weilu.gao@utah.edu.

Creating artificial matter with controllable chirality in a simple and scalable manner brings new opportunities to diverse areas. Here we show two such methods based on controlled vacuum filtration - twist stacking and mechanical rotation - for fabricating wafer-scale chiral architectures of ordered carbon nanotubes (CNTs) with tunable and large circular dichroism (CD). By controlling the stacking angle and handedness in the twist-stacking approach, we maximize the CD response and achieve a high deep-ultraviolet ellipticity of 40 ± 1 mdeg nm. Our theoretical simulations using the transfer matrix method reproduce the experimentally observed CD spectra and further predict that an optimized film of twist-stacked CNTs can exhibit an ellipticity as high as 150 mdeg nm, corresponding to a g factor of 0.22. Furthermore, the mechanical rotation method not only accelerates the fabrication of twisted structures but also produces both chiralities simultaneously in a single sample, in a single run, and in a controllable manner. The created wafer-scale objects represent an alternative type of synthetic chiral matter consisting of ordered quantum wires whose macroscopic properties are governed by nanoscopic electronic signatures and can be used to explore chiral phenomena and develop chiral photonic and optoelectronic devices.

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Three-dimensional bioprinted glioblastoma microenvironments model cellular dependencies and immune interactions

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细胞研究（英文版） 2020年第10期30卷 833-853页

作者： Min Tang Qi Xie Ryan C.Gimple Zheng Zhong Trevor Tam Jing Tian Reilly L.Kidwell Qiulian Wu Briana C.Prager Zhixin Qiu Aaron Yu Zhe Zhu Pinar Mesci Hui Jing Jacob Schimelman Pengrui Wang Derrick Lee Michael H.Lorenzini Deobrat Dixit Linjie Zhao Shruti Bhargava Tyler E.Miller Xueyi Wan Jing Tang Bingjie Sun Benjamin F.Cravatt Alysson R.Muotri Shaochen Chen Jeremy N.Rich Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Division of Regenerative Medicine Department of MedicineUniversity of California San Diego La Jolla CA 92037 USA Sanford Consortium for Regenerative Medicine 2880 Torrey Pines Scenic Drive La Jolla CA 92037 USA School of Life Sciences Westlake University Hangzhou Zhejiang 310024 China Key Laboratory of Growth Regulation and Translation Research of Zhejiang Province School of Life Sciences Westlake University Hangzhou Zhejiang 310024 China Institute of Basic Medical Sciences Westlake Institute for Advanced Study Hangzhou Zhejiang 310024 China Department of Pathology Case Western University Cleveland OH USA Department of Cellular and Molecular Medicine Cleveland Clinic Lerner Research Institute Cleveland OHUSA Department of Cellular & Molecular Medicine School of Medicine University of California San Diego La Jolla CA 92093 USA Department of Pediatrics/Rady Children's Hospital San Diego School of Medicine University of California San Diego ka Jolla CA 92093 USA The Department of Chemistry and The Skaggs Institute for Chemical Biology The Scripps Research Institute La Jolla CA 92037 USA Materials Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Department of Pathology and Center for Cancer Research Massachusetts General Hospital and Harvard Medical School Boston MA 02114 USA Division of Biological Sciences University of California San Diego La Jolla CA 92093 USA Kavli Institute for Brain and Mind University of California San Diego La JollaCA 92093 USA Center for Academic Research and Training in Anthropogeny (CARTA) La Jolla CA 92093 USA Department of Bioengineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Department of Neurosciences School of Medicine University of California San Diego La Jolla CA 92037 USA

Brain tumors are dynamic complex ecosystems with multiple cell *** model the brain tumor microenvironment in a reproducible and scalable system,we developed a rapid three-dimensional (3D) bioprinting method to construct clinically relevant biomimetic tissue *** recurrent glioblastoma,macrophages/microglia prominently contribute to the tumor *** parse the function of macrophages in 3D,we compared the growth of glioblastoma stem cells (GSCs) alone or with astrocytes and neural precursor cells in a hyaluronic acid-rich hydrogel,with or without *** constructs integrating macrophage recapitulate patient-derived transcriptional profiles predictive of patient survival,maintenance of stemness,invasion,and drug ***-genome CRISPR screening with bioprinted complex systems identified unique molecular dependencies in GSCs,relative to sphere *** bioprinted models serve as a scalable and physiologic platform to interrogate drug sensitivity,cellular crosstalk,invasion,context-specific functional dependencies,as well as immunologic interactions in a speciesmatched neural environment.

关键词： Cancer microenvironment Cancer stem cells CNS cancer

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Quantitatively designing porous copper current collectors for lithium metal anode

arXiv

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arXiv 2021年

作者： Lu, Bingyu Olivera, Edgar Scharf, Jonathan Chouchane, Mehdi Fang, Chengcheng Ceja, Miguel Pangilinan, Lisa Zheng, Shiqi Dawson, Andrew Cheng, Diyi Bao, Wurigumula Arcelus, Oier Franco, Alejandro A. Li, Xiaochun Tolbert, Sarah H. Meng, Ying Shirley Department of NanoEngineering University of California San Diego San diegoCA92093 United States Materials Science and Engineering University of California Los Angeles Los AngelesCA90095 United States Chemistry and Biochemistry University of California Los Angeles Los AngelesCA90095 United States Mechanical and Aerospace Engineering University of California Los Angeles Los AngelesCA90095 United States UMR CNRS 7314 Université de Picardie Jules Verne Hub de l'Energie 15 Rue Baudelocque Amiens80039 France FR CNRS 3459 Hub de l'Energie 15 Rue Baudelocque Amiens80039 France Materials Science and Engineering Program University of California San Diego San diegoCA92121 United States ALISTORE-European Research Institute FR CNRS 3104 Hub de l'Energie 15 Rue Baudelocque Amiens80039 France Institut Universitaire de France 103 Boulevard Saint Michel Paris75005 France Department of Chemical Engineering and Materials Science Michigan State University 220 Trowbridge Rd East LansingMI48824 United States

Lithium metal has been an attractive candidate as a next generation anode material. Despite its popularity, stability issues of lithium in the liquid electrolyte and the formation of lithium whiskers have kept it from practical use. Three-dimensional (3D) current collectors have been proposed as an effective method to mitigate whiskers growth. Although extensive research efforts have been done, the effects of three key parameters of the 3D current collectors, namely the surface area, the tortuosity factor, and the surface chemistry, on the performance of lithium metal batteries remain elusive. Herein, we quantitatively studied the role of these three parameters by synthesizing four types of porous copper networks with different sizes of well-structured micro-channels. X-ray microscale computed tomography (micro-CT) allowed us to assess the surface area, the pore size and the tortuosity factor of the porous copper materials. A metallic Zn coating was also applied to study the influence of surface chemistry on the performance of the 3D current collectors. The effects of these parameters on the performance were studied in detail through Scanning Electron Microscopy (SEM) and Titration Gas Chromatography (TGC). Stochastic simulations further allowed us to interpret the role of the tortuosity factor in lithiation. By understanding these effects, the optimal range of the key parameters is found for the porous copper anodes and their performance is predicted. Using these parameters to inform the design of porous copper anodes for Li deposition, Coulombic efficiencies (CE) of up to 99.56% are achieved, thus paving the way for the design of effective 3D current collector systems. Copyright © 2021, The Authors. All rights reserved.

关键词： Lithium

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Lithium‐Metal Batteries: Enabling Rapid Charging Lithium Metal Batteries via Surface Acoustic Wave‐Driven Electrolyte Flow (Adv. Mater. 14/2020)

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Advanced Materials 2020年第14期32卷

作者： An Huang Haodong Liu Ofer Manor Ping Liu James Friend Materials Science and Engineering Program and the Department of Mechanical and Aerospace Engineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Materials Science and Engineering Program and the Department of Nanoengineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA Wolfson Department of Chemical Engineering Technion—Israel Institute of Technology Haifa 3200003 Israel

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Robust and Versatile Coatings Engineered via Simultaneous Covalent and Noncovalent Interactions

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Angewandte Chemie 2021年第37期133卷

作者： Dr. Jiajing Zhou Dr. Matthew Penna Zhixing Lin Dr. Yiyuan Han Dr. René P. M. Lafleur Yijiao Qu Dr. Joseph J. Richardson Prof. Irene Yarovsky Prof. Jesse V. Jokerst Prof. Frank Caruso ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and the Department of Chemical Engineering The University of Melbourne Parkville Victoria 3010 Australia Department of NanoEngineering University of California San Diego 9500 Gilman Dr. La Jolla CA 92093 USA School of Engineering RMIT University Melbourne Victoria 3001 Australia Materials Science and Engineering Program University of California San Diego 9500 Gilman Dr. La Jolla CA 92093 USA Department of Radiology University of California San Diego 9500 Gilman Dr. La Jolla CA 92093 USA

Interfacial modular assembly has emerged as an adaptable strategy for engineering the surface properties of substrates in biomedicine, photonics, and catalysis. Herein, we report a versatile and robust coating (pBDT-TA), self-assembled from tannic acid (TA) and a self-polymerizing aromatic dithiol (i.e., benzene-1,4-dithiol, BDT), that can be engineered on diverse substrates with a precisely tuned thickness (5–40 nm) by varying the concentration of BDT used. The pBDT-TA coating is stabilized by covalent (disulfide) bonds and supramolecular (π-π) interactions, endowing the coating with high stability in various harsh aqueous environments across ionic strength, pH, temperature (e.g., 100 mM NaCl, HCl (pH 1) or NaOH (pH 13), and water at 100 °C), as well as surfactant solution (e.g., 100 mM Triton X-100) and biological buffer (e.g., Dulbecco's phosphate-buffered saline), as validated by experiments and simulations. Moreover, the reported pBDT-TA coating enables secondary reactions on the coating for engineering hybrid adlayers (e.g., ZIF-8 shells) via phenolic-mediated adhesion, and the facile integration of aromatic fluorescent dyes (e.g., rhodamine B) via π interactions without requiring elaborate synthetic processes.

关键词： functional self-assembly nanostructures polyphenols supramolecular chemistry surface engineering

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Imaging real-time amorphization of hybrid perovskite solar cells under electrical biasing

arXiv

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arXiv 2020年

作者： Kim, Min-Cheol Ahn, Namyoung Cheng, Diyi Xu, Mingjie Pan, Xiaoqing Kim, Suk Jun Luo, Yanqi Fenning, David P. Tan, Darren H.S. Zhang, Minghao Ham, So-Yeon Jeong, Kiwan Choi, Mansoo Meng, Ying Shirley Department of NanoEngineering University of California San Diego 9500 Gilman Drive San diegoCA92093 United States Global Frontier Center for Multiscale Energy Systems Seoul National University Seoul08826 Korea Republic of Materials Science and Engineering Program University of California San Diego 9500 Gilman Drive San diegoCA92093 United States Irvine Materials Research Institute University of California Irvine IrvineCA92697 United States Department of Materials Science and Engineering University of California Irvine IrvineCA92697 United States Department of Physics and Astronomy University of California Irvine IrvineCA92697 United States School of Energy Materials and Chemical Engineering Korea University of Technology and Education Cheonan31253 Korea Republic of University of California San Diego San diegoCA92093 United States Department of Mechanical Engineering Seoul National University Seoul08826 Korea Republic of

Perovskite solar cells have drawn much attention in recent years, owing to its world-record setting photovoltaic performances. Despite its promising use in tandem applications and flexible devices, its practicality is still limited by its structural instability often arising from ion migration and defect formation. While it is generally understood that ion instability is a primary cause for degradation, there is still a lack of direct evidence of structural transformation at the atomistic scale. Such an understanding is crucial to evaluate and pin-point how such instabilities are induced relative to external perturbations such as illumination or electrical bias with time, allowing researchers to devise effective strategies to mitigate them. Here, we designed an in-situ TEM setup to enable real-time observation of amorphization in double cation mixed perovskite materials under electrical biasing at 1 V. It is found that amorphization occurs along the (001) and (002) planes, which represents the observation of in-situ facet-dependent amorphization of a perovskite crystal. To reverse the degradation, the samples were heated at 50 oC and was found to recrystallize, effectively regaining its performance losses. This work is vital toward understanding fundamental ion-migration phenomena and address instability challenges of perovskite optoelectronics. Copyright © 2020, The Authors. All rights reserved.

关键词： Perovskite

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