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arXiv 2020年

作者： Kjærnes, K. Hallsteinsen, I. Chopdekar, R.V. Moreau, M. Bolstad, T. Svenum, I.-H. Selbach, S.M. Tybell, T. Department of Electronic Systems NTNU - Norwegian University of Science and Technology Norway Advanced Light Source Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Department of Materials Science and Engineering NTNU - Norwegian University of Science and Technology Norway Silicon Laboratories Norway AS Trondheim Office Norway SINTEF Industry Trondheim Norway Department of Chemical Engineering NTNU - Norwegian University of Science and Technology Norway

Antiferromagnetic thin films typically exhibit a multi-domain state, and control of the antiferromagnetic Néel vector is challenging as antiferromagnetic materials are robust to magnetic perturbations. By relying on anisotropic in-plane strain engineering of epitaxial thin films of the prototypical antiferromagnetic material LaFeO3, uniaxial Néel vector control is demonstrated. Orthorhombic (011)- and (101)-oriented DyScO3, GdScO3 and NdGaO3 substrates are used to engineer different anisotropic in-plane strain states. The anisotropic in-plane strain stabilises structurally monodomain monoclinic LaFeO3 thin films. The uniaxial Néel vector is found along the tensile strained b axis, contrary to bulk LaFeO3 having the Néel vector along the shorter a axis, and no magnetic domains are found. Hence, anisotropic strain engineering is a viable tool for designing unique functional responses, further enabling antiferromagnetic materials for mesoscopic device technology. Copyright © 2020, The Authors. All rights reserved.

关键词： Lanthanum compounds

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A consensus protocol for functional connectivity analysis in the rat brain (vol 26, pg 673, 2023)

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NATURE NEUROSCIENCE 2023年第6期26卷 1127-1128页

作者： Grandjean, Joanes Desrosiers-Gregoire, Gabriel Anckaerts, Cynthia Angeles-Valdez, Diego Ayad, Fadi Barriere, David A. Blockx, Ines Bortel, Aleksandra Broadwater, Margaret Cardoso, Beatriz M. Celestine, Marina Chavez-Negrete, Jorge E. Choi, Sangcheon Christiaen, Emma Clavijo, Perrin Colon-Perez, Luis Cramer, Samuel Daniele, Tolomeo Dempsey, Elaine Diao, Yujian Doelemeyer, Arno Dopfel, David Dvorakova, Lenka Falfan-Melgoza, Claudia Fernandes, Francisca F. Fowler, Caitlin F. Fuentes-Ibanez, Antonio Garin, Clement M. Gelderman, Eveline Golden, Carla E. M. Guo, Chao C. G. Henckens, Marloes J. A. G. Hennessy, Lauren A. Herman, Peter Hofwijks, Nita Horien, Corey Ionescu, Tudor M. Jones, Jolyon Kaesser, Johannes Kim, Eugene Lambers, Henriette Lazari, Alberto Lee, Sung-Ho Lillywhite, Amanda Liu, Yikang Liu, Yanyan Y. Lopez-Castro, Alejandra Lopez-Gil, Xavier Ma, Zilu MacNicol, Eilidh Madularu, Dan Mandino, Francesca Marciano, Sabina McAuslan, Matthew J. McCunn, Patrick McIntosh, Alison Meng, Xianzong Meyer-Baese, Lisa Missault, Stephan Moro, Federico Naessens, Daphne M. P. Nava-Gomez, Laura J. Nonaka, Hiroi Ortiz, Juan J. Paasonen, Jaakko Peeters, Lore M. Pereira, Mickael Perez, Pablo D. Pompilus, Marjory Prior, Malcolm Rakhmatullin, Rustam Reimann, Henning M. Reinwald, Jonathan Del Rio, Rodrigo Triana Rivera-Olvera, Alejandro Ruiz-Perez, Daniel Russo, Gabriele Rutten, Tobias J. Ryoke, Rie Sack, Markus Salvan, Piergiorgio Sanganahalli, Basavaraju G. Schroeter, Aileen Seewoo, Bhedita J. Selingue, Erwan Seuwen, Aline Shi, Bowen Sirmpilatze, Nikoloz Smith, Joanna A. B. Smith, Corrie Sobczak, Filip Stenroos, Petteri J. Straathof, Milou Strobelt, Sandra Sumiyoshi, Akira Takahashi, Kengo Torres-Garcia, Maria E. Tudela, Raul van den Berg, Monica van der Marel, Kajo van Hout, Aran T. B. Vertullo, Roberta Vidal, Benjamin Vrooman, Roel M. Wang, Victora X. Wank, Isabel Watson, David J. G. Yin, Ting Zhang, Yongzhi Zurbruegg, Stefan Achard, Sophie Alcauter, Sarael Auer, Dorothee P. Barbier, Emmanuel L. Baudewig, Juergen Beckmann, Chri Donders Institute for Brain Behaviour and Cognition Radboud University Nijmegen The Netherlands Department for Medical Imaging Radboud University Medical Center Nijmegen The Netherlands Cerebral Imaging Centre Douglas Mental Health University Institute Verdun QC Canada Integrated Program in Neuroscience McGill University Montreal QC Canada Bio-imaging Lab University of Antwerp Antwerp Belgium µNEURO Research Centre of Excellence University of Antwerp Antwerp Belgium Instituto de Neurobiología Universidad Nacional Autónoma de México Campus Juriquilla Querétaro Mexico Biological and Biomedical Engineering McGill University Montreal QC Canada McConnell Brain Imaging Centre McGill University Montreal QC Canada Montreal Neurological Institute McGill University Montreal QC Canada UMR INRAE/CNRS 7247 Physiologie des Comportements et de la Reproduction Physiologie de la reproduction et des comportements Centre de recherche INRAE de Nouzilly Tours France Department of Neurology and Neurosurgery McGill University Montreal QC Canada Center for Animal MRI University of North Carolina at Chapel Hill Chapel Hill NC USA Department of Neurology University of North Carolina at Chapel Hill Chapel Hill NC USA Biomedical Research Imaging Center University of North Carolina at Chapel Hill Chapel Hill NC USA Preclinical MRI Champalimaud Research Champalimaud Centre for the Unknown Lisbon Portugal Laboratoire des Maladies Neurodégénératives Molecular Imaging Research Center (MIRCen) Université Paris-Saclay Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) CNRS Fontenay-aux-Roses France Departamento de Neurobiología Conductual y Cognitiva Instituto de Neurobiología Universidad Nacional Autónoma de México Campus Juriquilla Querétaro México Translational Neuroimaging and Neural Control Group High-Field Magnetic Resonance Max Planck Institute for Biological Cybernetics Tuebingen Germany Graduate Training Centre of Neuroscience International Max

Task-free functional connectivity in animal models provides an experimental framework to examine connectivity phenomena under controlled conditions and allows for comparisons with data modalities collected under invasive or terminal procedures. Currently, animal acquisitions are performed with varying protocols and analyses that hamper result comparison and integration. Here we introduce StandardRat, a consensus rat functional magnetic resonance imaging acquisition protocol tested across 20 centers. To develop this protocol with optimized acquisition and processing parameters, we initially aggregated 65 functional imaging datasets acquired from rats across 46 centers. We developed a reproducible pipeline for analyzing rat data acquired with diverse protocols and determined experimental and processing parameters associated with the robust detection of functional connectivity across centers. We show that the standardized protocol enhances biologically plausible functional connectivity patterns relative to previous acquisitions. The protocol and processing pipeline described here is openly shared with the neuroimaging community to promote interoperability and cooperation toward tackling the most important challenges in neuroscience.

关键词： Databases Neural circuits

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Switchable Electrostatically Templated Polymerization

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Angewandte Chemie 2022年第39期134卷

作者： Chendan Li Jose R. Magana Fabian Sobotta Junyou Wang Martien A. Cohen Stuart Bas G. P. van Ravensteijn Ilja K. Voets State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China Institute for Complex Molecular Systems Department of Chemical Engineering and Chemistry Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands Current address: Grup d'Enginyeria de Materials (GEMAT) Institut Químic de Sarrià (IQS) Universitat Ramon Llull (URL) 08022 Barcelona Spain Current address: Department of Pharmaceutics Utrecht Institute for Pharmaceutical Sciences (UIPS) Faculty of Science Utrecht University P.O. Box 80082 3508 TB Utrecht The Netherlands

We report a switchable, templated polymerization system where the strength of the templating effect can be modulated by solution pH and/or ionic strength. The responsiveness to these cues is incorporated through a dendritic polyamidoamine-based template of which the charge density depends on pH. The dendrimers act as a template for the polymerization of an oppositely charged monomer, namely sodium styrene sulfonate. We show that the rate of polymerization and maximum achievable monomer conversion are directly related to the charge density of the template, and hence the environmental pH. The polymerization could effectively be switched “ON” and “OFF” on demand, by cycling between acidic and alkaline reaction environments. These findings break ground for a novel concept, namely harnessing co-assembly of a template and growing polymer chains with tunable association strength to create and control coupled polymerization and self-assembly pathways of (charged) macromolecular building blocks.

关键词： Complex Core Coacervate Micelles PIESA Polyelectrolytes RAFT Polymerization Templated Polymerizations

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单个蝙蝠病毒组分析揭示了蝙蝠间的共感染和溢出以及病毒的人畜共患潜力

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中华实验和临床病毒学杂志 2024年第4期38卷 480-480页

作者：王娟(编译) Shenzhen Campus of Sun Yat-sen University Sun Yat-sen University State Key Laboratory for Biocontrol School of Medicine Shenzhen China (GRID:grid.12981.33) (ISNI:0000 0001 2360 039X) Shenzhen Campus of Sun Yat-sen University Sun Yat-sen University Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases Shenzhen China (GRID:grid.12981.33) (ISNI:0000 0001 2360 039X) Fudan University Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering School of Life Sciences Shanghai China (GRID:grid.8547.e) (ISNI:0000 0001 0125 2443) Yunnan Institute of Endemic Disease Control and Prevention Department of Viral and Rickettsial Disease Control Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention Dali China (GRID:grid.8547.e) Shenzhen Campus of Sun Yat-sen University Sun Yat-sen University School of Public Health (Shenzhen) Shenzhen China (GRID:grid.12981.33) (ISNI:0000 0001 2360 039X) Yunnan Institute of Endemic Disease Control and Prevention Department of Viral and Rickettsial Disease Control Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention Dali China (GRID:grid.12981.33) Yunnan University Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Centre for Invasion Biology School of Ecology and Environmental Science Kunming China (GRID:grid.440773.3) (ISNI:0000 0000 9342 2456) Sun Yat-sen University Molecular Imaging Center Central Laboratory The Fifth Affiliated Hospital Zhuhai China (GRID:grid.12981.33) (ISNI:0000 0001 2360 039X) Shenzhen Campus of Sun Yat-sen University Sun Yat-sen University State Key Laboratory for Biocontrol School of Medicine Shenzhen China (GRID:grid.12981.33) (ISNI:0000 0001 2360 039X) Guangzhou International Bio-Island Guangzhou National Laboratory Guangzhou China (GRID:grid.12981.33) Chinese Center for Disease Control and Prevention State Key Laboratory of Infectious Disease Prevention and Control National Institute for Viral Disease Control and Prev

蝙蝠是许多人畜共患病病毒的储备宿主。但是关于个体蝙蝠内病毒的多样性和丰度的了解还较少,因此它们之间病毒共感染和溢出的频率也不清楚。我们用无偏的元转录组学方法,对中国云南省采样的149只个体蝙蝠中携带的哺乳动物相关病毒进行... 详细信息

蝙蝠是许多人畜共患病病毒的储备宿主。但是关于个体蝙蝠内病毒的多样性和丰度的了解还较少,因此它们之间病毒共感染和溢出的频率也不清楚。我们用无偏的元转录组学方法,对中国云南省采样的149只个体蝙蝠中携带的哺乳动物相关病毒进行了表征。结果显示研究的动物中病毒的高频共感染(即蝙蝠个体同时感染多种病毒物种)和溢出,这可能进一步促进病毒的重组和再组合。

关键词：人畜共患病共感染病毒组蝙蝠溢出多样性云南省

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Demonstration of broadband topological slow light

arXiv

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arXiv 2022年

作者： Chen, Fujia Xue, Haoran Pan, Yuang Wang, Maoren Hu, Yuanhang Zhang, Li Chen, Qiaolu Han, Song Liu, Gui-Geng Gao, Zhen Zhou, Peiheng Yin, Wenyan Chen, Hongsheng Zhang, Baile Yang, Yihao Interdisciplinary Center for Quantum Information State Key Lab. of Modern Optical Instrumentation College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China ZJU-Hangzhou Global Science and Technology Innovation Center Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang ZJU-UIUC Institute Zhejiang University Hangzhou310027 China Jinhua Institute of Zhejiang University Zhejiang University Jinhua321099 China Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore637371 Singapore Centre for Disruptive Photonic Technologies The Photonics Institute Nanyang Technological University 50 Nanyang Avenue Singapore639798 Singapore National Engineering Research Center of Electromagnetic Radiation Control Materials State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu610054 China Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen518055 China

Slow-light devices are able to significantly enhance light-matter interaction due to the reduced group velocity of light, but a very low group velocity is usually achieved in a narrow bandwidth, accompanied by extreme sensitivity to imperfections that causes increased disorder-induced attenuation. Recent theories have suggested an ideal solution to this problem—unidirectional chiral photonic states, previously discovered in structures known as photonic topological insulators, not only resist backscattering from imperfections but can also be slowed down in the entire topological bandgap with multiple windings in the Brillouin zone. Here, we report on the experimental demonstration of broadband topological slow light in a photonic topological insulator. When coupled with periodic resonators that form flat bands, the chiral photonic states can wind many times around the Brillouin zone, achieving an ultra-low group velocity in the entire topological bandgap. This demonstration extends the scope of topological photonics into slow light engineering, and opens a unique avenue in the dispersion manipulation of chiral photonic states. © 2022, CC BY.

关键词： Slow light

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Nanotheranostics to target antibiotic-resistant bacteria: Strategies and applications

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OpenNano 2023年 11卷

作者： Bhattacharjee, Rahul Negi, Arvind Bhattacharya, Basudha Dey, Tanima Mitra, Priya Preetam, Subham Kumar, Lamha Kar, Sulagna Das, Sabya Sachi Iqbal, Danish Kamal, Mehnaz Alghofaili, Fayez Malik, Sumira Dey, Abhijit Jha, Saurabh Kumar Ojha, Shreesh Paiva-Santos, Ana Cláudia Kesari, Kavindra Kumar Jha, Niraj Kumar KIIT School of Biotechnology Kalinga Institute of Industrial Technology (KIIT-DU) Odisha Bhubaneswar India Department of Bioproducts and Bio-systems School of Chemical Engineering Aalto University Espoo 00076 Finland Institute of Advanced Materials IAAM Gammalkilsvägen 18 Ulrika 59053 Sweden School of Biology Indian Institute of Science Education and Research Thiruvananthapuram India School of Pharmaceutical and Population Health Informatics DIT University Uttarakhand Dehradun 248009 India Department of Health Information Management College of Applied Medical Sciences Buraydah Private Colleges Buraydah 51418 Saudi Arabia Department of Pharmaceutical Chemistry College of Pharmacy Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia Department of Medical Laboratory Sciences College of Applied Medical Sciences Majmaah University Majmaah 11952 Saudi Arabia Amity Institute of Biotechnology Amity University Jharkhand Jharkhand Ranchi 834001 India Department of Life Sciences Presidency University 86/1 College Street West Bengal Kolkata 700073 India Department of Biotechnology School of Engineering and Technology Sharda University Knowledge Park III Uttar Pradesh Greater Noida India Department of Pharmacology and Therapeutics College of Medicine and Health Sciences United Arab Emirates University Al Ain P.O. Box 15551 United Arab Emirates Department of Pharmaceutical Technology Faculty of Pharmacy of the University of Coimbra University of Coimbra Coimbra Portugal REQUIMTE/LAQV Group of Pharmaceutical Technology Faculty of Pharmacy of the University of Coimbra University of Coimbra Coimbra Portugal Department of Applied Physics School of Science Aalto University Espoo 00076 Finland Department of Biotechnology School of Applied & Life Sciences (SALS) Uttaranchal University Dehradun 248007 India School of Bioengineering and Biosciences Lovely Professional University Punjab Phagwara 144411 India

Various health agencies, such as the European Medical Agency (EMA), Centers for Disease control and Prevention (CDC), and World Health Organization (WHO), timely cited the upsurge of antibiotic resistance as a severe threat to the public health and global economy. Importantly, there is a rise in nosocomial infections among covid-19 patients and in-hospitalized patients with the delineating disorder. Most of nosocomial infections are related to the bacteria residing in biofilm, which are commonly formed on material surfaces. In biofilms, microcolonies of various bacteria live in syntropy;therefore, their infections require a higher antibiotic dosage or cocktail of broad-spectrum antibiotics, aggravating the severity of antibiotic resistance. Notably, the lack of intrinsic antibacterial properties in commercial-grade materials desires to develop newer functionalized materials to prevent biofilm formation on their surfaces. To devise newer strategies, materials prepared at the nanoscale demonstrated reasonable antibacterial properties or enhanced the activity of antimicrobial agents (that are encapsulated/chemically functionalized onto the material surface). In this manuscript, we compiled such nanosized materials, specifying their role in targeting specific strains of bacteria. We also enlisted the examples of nanomaterials, nanodevice, nanomachines, nano-camouflaging, and nano-antibiotics for bactericidal activity and their possible clinical implications. © 2023 The Author(s)

关键词： Antibacterial Antibiotic drug resistance Nano-antibiotics Nano-device Nano-materials Nano-robots Nano-sized materials

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Serial stimuli-responsive theranostic nanomaterials for cancer therapy and imaging

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Coordination Chemistry Reviews 2025年 542卷

作者： Malairaj Sathuvan Karthikeyan Narayanan Hyunsik Hong Raju Vivek Saiyi Zhong Kit-Leong Cheong Juyoung Yoon Guosheng Song Heemin Kang Ramar Thangam Centre for Advanced Studies in Botany University of Madras Guindy Campus Chennai 600 025 Tamilnadu India Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute Troy New York 12180 United States Department of Materials Science and Engineering Korea University Seoul 02841 Republic of Korea Bio-Nano Theranostics Research Laboratory Department of Zoology Bharathiar University Coimbatore 641 046 Tamil Nadu India Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety College of Food Science and Technology Guangdong Ocean University Zhanjiang 524088 China Department of Biology College of Science Shantou University Shantou 515063 Guangdong China Department of Chemistry and Nanoscience Ewha Womans University Seoul 03760 Republic of Korea Graduate Program in Innovative Biomaterials Convergence Ewha Womans University Seoul 03760 Republic of Korea State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China College of Medicine Korea University Seoul 02841 Republic of Korea

Traditional cancer drug therapies face major challenges, including high recurrence rates, systemic toxicity, and drug resistance. Serial stimuli-responsive (SSR) nanomaterials offer substantial advantages over single-stimulus systems for diagnosis and treatment by facilitating precise, adaptable, and effective drug delivery and triggering multiple disease site-specific on-demand responses tailored for personalized treatment of heterogeneous dynamic tumors under real-time monitoring. In this review, we highlight the transformative role of SSR nanomaterials with theranostic abilities. We explore SSR-associated innovative drug delivery systems based on smart nanomaterials, such as liposomes, dendrimers, polymeric nanoparticles, and micelles, which can be serially activated by endogenous stimuli, such as the pH and enzymes, or exogenous stimuli, such as heat, light, a magnetic field, and ultrasound. To our knowledge, this review is the first to discuss the design of smart nanomaterials for SSR multimodal cancer theranostics. We emphasize the emerging field of imaging-guided therapy, wherein theranostic agents facilitate the real-time monitoring of drug pharmacokinetics and therapeutic responses, allowing for the development of personalized treatment strategies targeting different tumor sites. Finally, we anticipate the role of SSR nanomaterials in transforming cancer-theranostic modalities for more effective and personalized therapies.

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Learning control of quantum systems using frequency-domain optimization algorithms

arXiv

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arXiv 2020年

作者： Dong, Daoyi Shu, Chuan-Cun Chen, Jiangchao Xing, Xi Ma, Hailan Guo, Yu Rabitz, Herschel School of Engineering and Information Technology University of New South Wales CanberraACT2600 Australia Department of Chemistry Princeton University PrincetonNJ08544 United States Hunan Key Laboratory of Super-Microstructure and Ultrafast Process School of Physics and Electronics Central South University Changsha410083 China School of Engineering and Information Technology University of New South Wales CanberraACT2600 Australia Department of Chemistry Princeton University PrincetonNJ08544 United States Department of Control and Systems Engineering School of Management and Engineering Nanjing University Nanjing210093 China Hunan Provincial Key Laboratory of Flexible Electronic Materials Genome Engineering School of Physics and Electronic Science Changsha University of Science and Technology Changsha410114 China

We investigate two classes of quantum control problems by using frequency-domain optimization algorithms in the context of ultrafast laser control of quantum systems. In the first class, the system model is known and a frequency-domain gradient-based optimization algorithm is applied to searching for an optimal control field to selectively and robustly manipulate the population transfer in atomic Rubidium. The other class of quantum control problems involves an experimental system with an unknown model. In the case, we introduce a differential evolution algorithm with a mixed strategy to search for optimal control fields and demonstrate the capability in an ultrafast laser control experiment for the fragmentation of Pr(hfac)3 molecules. Copyright © 2020, The Authors. All rights reserved.

关键词： Frequency domain analysis

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Flexible, ultrathin bioelectronic materials and devices for chronically stable neural interfaces

Brain-X

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Brain-X 2023年第4期1卷

作者： Zhou, Lianjie Wu, Zhongyuan Sun, Mubai Park, Jaejin Han, Mengdi Wang, Ming Yu, Junsheng Di, Zengfeng Mei, Yongfeng Bai, Wubin Yu, Xinge Yu, Ki Jun Song, Enming Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University Shanghai China Institute of Agro-food Technology Jilin Academy of Agricultural Sciences Jilin Changchun China Functional Bio-integrated Electronics and Energy Management Lab School of Electrical and Electronic Engineering Yonsei University Seoul South Korea Department of Biomedical Engineering College of Future Technology Peking University Beijing China State Key Laboratory of Integrated Chips and Systems Frontier Institute of Chip and System Fudan University Shanghai China State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China (UESTC) Sichuan Chengdu China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Department of Material Science Fudan University Shanghai China Department of Applied Physical Sciences University of North Carolina at Chapel Hill Chapel Hill NC United States Department of Biomedical Engineering City University of Hong Kong Hong Kong

Advanced technologies that can establish intimate, long-lived functional interfaces with neural systems have attracted increasing interest due to their wide-ranging applications in neuroscience, bioelectronic medicine, and the associated treatment of neurodegenerative diseases. A critical challenge of significance remains in the development of electronic platforms that offer conformal contact with soft brain tissue for the sensing or stimulation of brain activities and chronically stable operation in vivo, at scales that range from cellular-level resolution to macroscopic areas. This review summarizes recent advances in this field, with an emphasis on the use of demonstrated concepts, constituent materials, engineered designs, and system integration to address the current challenges. The article begins with an overview of recent bioelectronic platforms with unique form factors, ranging from filamentary probes to conformal sheets and three-dimensional frameworks for alleviating the mechanical mismatch between interface materials and neural tissues. Next, active interfaces which utilize inorganic/organic semiconductor-enabled devices are reviewed, highlighting various working principles of recording mechanisms including capacitively and conductively coupled sensing enabled by high transistor matrices at high spatiotemporal resolution. The subsequent section presents approaches to biological integration which use active materials for multiplexed addressing, local amplification and multimodal operation with high-channel-count and large-scale electronic systems in a safe fashion that provides multi-decade stable performance in both animal models and human subjects. The advances summarized in this review will guide the future direction of this technology and provide a basis for next-generation chronic neural interfaces with long-lived high-performance operation. © 2023 The Authors. Brain-X published by John Wiley & Sons Australia, Ltd on behalf of Ainuohui Medical Technol

关键词： active recording barrier materials chronic stability flexibility neural interface passive electrodes

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Carbon Oxyanion Self-Transformation on NiFe Oxalates Enables Long-Term Ampere-Level Current Density Seawater Oxidation

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Angewandte Chemie 2023年第1期136卷

作者： Zixiao Li Dr. Yongchao Yao Shengjun Sun Jie Liang Shaohuan Hong Hui Zhang Chaoxin Yang Xuefeng Zhang Zhengwei Cai Jun Li Yuchun Ren Yongsong Luo Dongdong Zheng Xun He Dr. Qian Liu Prof. Yan Wang Prof. Feng Gong Prof. Xuping Sun Prof. Bo Tang College of Chemistry Chemical Engineering and Materials Science Shandong Normal University Jinan 250014 Shandong China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 Sichuan China Department of Laboratory Medicine Precision Medicine Center West China Hospital Sichuan University Chengdu 610041 Sichuan China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Nanjing 211189 Jiangsu China Institute for Advanced Study Chengdu University Chengdu 610106 Sichuan China School of Materials and Energy University of Electronic Science and Technology of China Chengdu 610054 Sichuan China Laoshan Laboratory Qingdao 266237 Shandong China

Seawater electrolysis is an attractive way of making H 2 in coastal areas, and NiFe-based materials are among the top options for alkaline seawater oxidation (ASO). However, ample Cl − in seawater can severely corrode catalytic sites and lead to limited lifespans. Herein, we report that in situ carbon oxyanion self-transformation (COST) from oxalate to carbonate on a monolithic NiFe oxalate micropillar electrode allows safeguard of high-valence metal reaction sites in ASO. In situ/ex situ studies show that spontaneous, timely, and appropriate COST safeguards active sites against Cl − attack during ASO even at an ampere-level current density ( j ). Our NiFe catalyst shows efficient and stable ASO performance, which requires an overpotential as low as 349 mV to attain a j of 1 A cm −2 . Moreover, the NiFe catalyst with protective surface CO 3 2− exhibits a slight activity degradation after 600 h of electrolysis under 1 A cm −2 in alkaline seawater. This work reports effective catalyst surface design concepts at the level of oxyanion self-transformation, acting as a momentous step toward defending active sites in seawater-to-H 2 conversion systems.

关键词： Carbonate Chlorine Chemistry Electrolysis Electrostatic Repulsion Seawater Oxidation

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