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Self-packaged stretchable printed circuits with ligand-bound liquid metal particles in elastomer

Nature communications 2025年第1期16卷 4944页

作者： Hyeonyeob Seo Gun-Hee Lee Jiwoo Park Dong-Yeong Kim Yeonzu Son Semin Kim Kum Seok Nam Congqi Yang Joonhee Won Jae-Young Bae Hyunjun Kim Seung-Kyun Kang Steve Park Jiheong Kang Seongjun Park Department of Bio and Brain Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Departments of Cogno-Mechatronics Engineering Pusan National University Busan Republic of Korea. Departments of Optics and Mechatronics Engineering Pusan National University Busan Republic of Korea. School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Program of Brain and Cognitive Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea. Graduate School of Semiconductor Technology Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Medical Research Center Seoul National University Seoul Republic of Korea. Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Department of Materials Science and Engineering Seoul National University Seoul Republic of Korea. KAIST Institute for NanoCentury Daejeon Republic of Korea. Department of Chemistry Seoul National University Seoul Republic of Korea. jiheongkang@snu.ac.kr. Medical Research Center Seoul National University Seoul Republic of Korea. seongjunpark@snu.ac.kr. Department of Biomedical Sciences College of Medicine Seoul National University Seoul Republic of Korea. seongjunpark@snu.ac.kr. School of Transdisciplinary Innovations Seoul National University Seoul Republic of Korea. seongjunpark@snu.ac.kr. Interdisciplinary Program in Bioengineering College of Engineering Seoul National University Seoul Republic of Korea. seongjunpark@snu.ac.kr. Department of Transdisciplinary Medicine Seoul National University Hospital Seoul South Korea. seongjunpark@snu.ac.kr.

Packaging in stretchable electronics is crucial to protect components from environmental damage while preserving mechanical flexibility and providing electrical insulation. The conventional packaging process involves multiple steps that increase in complexity as the number of circuit layers multiply. In this study, we introduce a self-packaged stretchable printed circuit board enabled by the in situ phase separation of liquid metal particles (LMPs) within various polymer matrices during solution-based printing processes. The ligand-bound LMPs (LB-LMPs), engineered to inhibit oxide growth, undergo in situ sintering, prompting vertical phase separation. This synthesis strategy not only achieves high initial conductivity of the LMPs but also encapsulates them within the polymer matrix, preventing leakage and providing electrical insulation. Our method enables multi-layer circuit printing, eliminating the need for additional activation and packaging processes. Furthermore, by integrating conductive materials into packaging layers for selective electrical conductivity, vertical interconnect accesses and conductive pads can be formed, enabling large-scale, stretchable, and leakage-free multi-layer electrical circuits and bio-interfaces.

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Magnetic Control of Soft Chiral Phonons in PbTe

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Physical Review Letters 2022年第7期128卷 075901-075901页

作者： Andrey Baydin Felix G. G. Hernandez Martin Rodriguez-Vega Anderson K. Okazaki Fuyang Tay G. Timothy Noe, II Ikufumi Katayama Jun Takeda Hiroyuki Nojiri Paulo H. O. Rappl Eduardo Abramof Gregory A. Fiete Junichiro Kono Department of Electrical and Computer Engineering Rice University Houston Texas 77005 USA Smalley-Curl Institute Rice University Houston Texas 77005 USA Instituto de Física Universidade de São Paulo São Paulo São Paulo 05508-090 Brazil Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Laboratório Associado de Sensores e Materiais Instituto Nacional de Pesquisas Espaciais São José dos Campos São Paulo 12201-970 Brazil Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston Texas 77005 USA Department of Physics Graduate School of Engineering Science Yokohama National University Yokohama 240-8501 Japan Institute for Materials Research Tohoku University Sendai 980-8577 Japan Department of Physics Northeastern University Boston Massachusetts 02115 USA Department of Physics Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Department of Physics and Astronomy Rice University Houston Texas 77005 USA Department of Material Science and NanoEngineering Rice University Houston Texas 77005 USA

PbTe crystals have a soft transverse optical phonon mode in the terahertz frequency range, which is known to efficiently decay into heat-carrying acoustic phonons, resulting in anomalously low thermal conductivity. Here, we studied this phonon via polarization-dependent terahertz spectroscopy. We observed softening of this mode with decreasing temperature, indicative of incipient ferroelectricity, which we explain through a model including strong anharmonicity with a quartic displacement term. In magnetic fields up to 25 T, the phonon mode splits into two modes with opposite handedness, exhibiting circular dichroism. Their frequencies display Zeeman splitting together with an overall diamagnetic shift with increasing magnetic field. Using a group-theoretical approach, we demonstrate that these observations are the result of magnetic field-induced morphic changes in the crystal symmetries through the Lorentz force exerted on the lattice ions. Thus, our Letter reveals a novel process of controlling phonon properties in a soft ionic lattice by a strong magnetic field.

关键词： Chirality Diamagnetism Magneto-dielectric effect Optical phonons Thermal conductivity Zeeman effect Terahertz time-domain spectroscopy

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Bioelectrical Interfaces Beyond Cellular Excitability: Cancer, Aging, and Gene Expression Reprogramming

arXiv

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arXiv 2025年

作者： Cadinu, Paolo Burgess, Matthew Jones, Catarina Franco Luciani, Titouan Iarossi, Marzia Schröter, Manuel Nakatsuka, Nako Djamgoz, Mustafa B.A. Gonçalves, Gil Sanjuán-Alberte, Paola Mendes, Paula M. Rawson, Frankie J. Nair, Malavika Levin, Michael Moreddu, Rosalia Program in Cellular and Molecular Medicine Boston Children’s Hospital BostonMA02115 United States Department of Microbiology Blavatnik Institute Harvard Medical School BostonMA02115 United States Institute of Biomedical Engineering Department of Engineering Science University of Oxford Oxford United Kingdom Department of Bioengineering Institute for Bioengineering and Biosciences Instituto Superior Técnico University of Lisbon Lisbon Portugal Associate Laboratory i4HB Institute for Health and Bioeconomy Instituto Superior Técnico Universidade de Lisboa Lisbon Portugal Department of Neuroscience Institut Pasteur Paris75015 France Department of Biomedical Engineering Technion Israel Institute of Technology Haifa Israel ETH Zurich Department of Biosystems Science and Engineering Basel Switzerland Laboratory of Chemical Nanotechnology Neuro-X Institute EPFL Genève1202 Switzerland Department of Life Sciences Imperial College London United Kingdom Department of Mechanical Engineering University of Aveiro Aveiro3810-193 Portugal Guimarães4800-058 Portugal School of Chemical Engineering University of Birmingham Birmingham United Kingdom Bioelectronics Laboratory Division of Regenerative Medicine and Cellular Therapies School of Pharmacy Biodiscovery Institute University of Nottingham Nottingham United Kingdom Allen Discovery Centre Tufts University Tufts University MedfordMA United States Wyss Institute for Bioinspired Engineering Harvard University BostonMA United States School of Electronics and Computer Science University of Southampton Southampton United Kingdom Institute for Life Sciences University of Southampton Southampton United Kingdom

Bioelectrical interfaces represent a significant evolution in the intersection of nanotechnology and biophysics, oRering new strategies for probing and influencing cellular processes. These systems capitalize on the subtle but powerful electric fields within living matter, potentially enabling applications beyond cellular excitability, ranging from targeted cancer therapies to interventions in genetic mechanisms and aging. This perspective article envisions the translation, development and application of next-generation solid-state bioelectrical interfaces and their transformative impact across several critical areas of medical research. © 2025, CC BY.

关键词： Medical nanotechnology

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The Multi-modality Cell Segmentation Challenge: Towards Universal Solutions

arXiv

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arXiv 2023年

作者： Ma, Jun Xie, Ronald Ayyadhury, Shamini Ge, Cheng Gupta, Anubha Gupta, Ritu Gu, Song Zhang, Yao Lee, Gihun Kim, Joonkee Lou, Wei Li, Haofeng Upschulte, Eric Dickscheid, Timo de Almeida, José Guilherme Wang, Yixin Han, Lin Yang, Xin Labagnara, Marco Gligorovski, Vojislav Scheder, Maxime Rahi, Sahand Jamal Kempster, Carly Pollitt, Alice Espinosa, Leon Mignot, Tâm Middeke, Jan Moritz Eckardt, Jan-Niklas Li, Wangkai Li, Zhaoyang Cai, Xiaochen Bai, Bizhe Greenwald, Noah F. Van Valen, David Weisbart, Erin Cimini, Beth A. Cheung, Trevor Brück, Oscar Bader, Gary D. Wang, Bo Peter Munk Cardiac Centre University Health Network TorontoON Canada Department of Laboratory Medicine and Pathobiology University of Toronto TorontoON Canada Vector Institute TorontoON Canada Department of Molecular Genetics University of Toronto TorontoON Canada Donnelly Centre University of Toronto TorontoON Canada Princess Margaret Cancer Centre University Health Network TorontoON Canada School of Medicine and Pharmacy Ocean University of China Qingdao China New Delhi India Laboratory Oncology Dr. BRA-IRCH All India Institute of Medical Sciences New Delhi India Department of Image Reconstruction Nanjing Anke Medical Technology Co. Ltd. Nanjing China Shanghai Artificial Intelligence Laboratory Shanghai China Graduate School of AI KAIST Seoul Korea Republic of Shenzhen Research Institute of Big Data Shenzhen China Shenzhen China Helmholtz AI Research Center Jülich Jülich Germany Faculty of Mathematics and Natural Sciences Institute of Computer Science Heinrich Heine University Düsseldorf Düsseldorf Germany Hinxton United Kingdom Champalimaud Foundation - Centre for the Unknown Lisbon Portugal Department of Bioengineering Stanford University Palo AltoCA United States Tandon School of Engineering New York University New YorkNY United States School of Biomedical Engineering Health Science Center Shenzhen University Shenzhen China Lausanne Switzerland School of Biological Sciences University of Reading Reading United Kingdom Laboratoire de Chimie Bactérienne CNRS Université Aix Marseille UMR Institut de Microbiologie de la Méditerranée Marseille France Department of Internal Medicine I University Hospital Dresden Technical University Dresden Dresden Germany Else Kroener Fresenius Center for Digital Health Technical University Dresden Dresden Germany Department of Automation University of Science and Technology of China Hefei China Institute of Advanced Technology University of Science and Technology of China Hefei Chi

Cell segmentation is a critical step for quantitative single-cell analysis in microscopy images. Existing cell segmentation methods are often tailored to specific modalities or require manual interventions to specify hyper-parameters in different experimental settings. Here, we present a multi-modality cell segmentation benchmark, comprising over 1500 labeled images derived from more than 50 diverse biological experiments. The top participants developed a Transformer-based deep-learning algorithm that not only exceeds existing methods but can also be applied to diverse microscopy images across imaging platforms and tissue types without manual parameter adjustments. This benchmark and the improved algorithm offer promising avenues for more accurate and versatile cell analysis in microscopy imaging. © 2023, CC BY-NC-ND.

关键词： Deep learning

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BPS2025 - Structural basis of potassium selectivity in kalium channelrhodopsins

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Biophysical Journal 2025年第3期124卷 64a-65a页

作者： Seiya Tajima Yoon Seok Kim YoungJu Jo Peter Y. Wang Joseph M. Paggi Charu Ramakrishnan Shunki Takaramoto Takashi Nagata Masae Konno Kota Katayama Hideki Kandori Ron O. Dror Keiichi Inoue Karl Deisseroth Hideaki Kato Research Center for Advanced Science and Technology The University of Tokyo Tokyo Japan Department of Bioengineering Stanford University Stanford CA USA Department of Computer Science Stanford University Stanford CA USA Cracking the Neural Code Program Stanford University Stanford CA USA The Institute for Solid State Physics The University of Tokyo Kashiwa Japan PRESTO Japan Science and Technology Agency Kawaguchi Japan Department of Life Science and Applied Chemistry Nagoya Institute of Technology Nagoya Japan OptoBioTechnology Research Center Nagoya Institute of Technology Nagoya Japan Institute for Computational and Mathematical Engineering Stanford University Stanford CA USA Howard Hughes Medical Institute Stanford University Stanford CA USA Graduate School of Arts and Sciences The University of Tokyo Tokyo Japan

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Author Correction: Generation of accurate, expandable phylogenomic trees with uDance

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Nature biotechnology 2024年第5期42卷 814页

作者： Metin Balaban Yueyu Jiang Qiyun Zhu Daniel McDonald Rob Knight Siavash Mirarab Bioinformatics and Systems Biology Graduate Program University of California San Diego La Jolla CA USA. Department of Electrical and Computer Engineering University of California San Diego La Jolla CA USA. Biodesign Center for Fundamental and Applied Microbiomics Arizona State University Tempe AZ USA. School of Life Sciences Arizona State University Tempe AZ USA. Department of Pediatrics University of California San Diego La Jolla CA USA. Department of Computer Science and Engineering Jacobs School of Engineering University of California San Diego La Jolla CA USA. Department of Bioengineering University of California San Diego La Jolla CA USA. Center for Microbiome Innovation Jacobs School of Engineering University of California San Diego La Jolla CA USA. Department of Electrical and Computer Engineering University of California San Diego La Jolla CA USA. smirarab@ucsd.edu. Department of Computer Science and Engineering Jacobs School of Engineering University of California San Diego La Jolla CA USA. smirarab@ucsd.edu. Center for Microbiome Innovation Jacobs School of Engineering University of California San Diego La Jolla CA USA. smirarab@ucsd.edu.

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Are the emission quantum yields of cesium plumbobromide perovskite nanocrystals reliable metrics for their quality?

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Journal of Photochemistry and Photobiology 2022年 10卷

作者： Tamayo, Jesse Do, Tori El-Maraghy, Karen Vullev, Valentine I. Department of Chemistry University of California Riverside 92521 CA United States Department of Cell Biology and Neuroscience University of California Riverside 92521 CA United States Department of Bioengineering University of California Riverside 92521 CA United States Department of Biochemistry University of California Riverside 92521 CA United States Materials Science and Engineering Program University of California Riverside 92521 CA United States Department of Chemistry and Physics Santa Rosa Junior College Santa Rosa 95401 CA United States School of Nursing Johns Hopkins University 525 N Wolfe St Baltimore 21205 MD United States School of Nursing and Health Professions University of San Francisco San Francisco 94117 CA United States

The impact of halide perovskites on photonics, optoelectronics and energy science is indisputable. The pursuit of perovskite nanomaterials has open roads for explorations where large surface-to-volume ratios are paramount. While the solution-phase synthesis of most nanoparticles is relatively easy, the cleaning steps for obtaining populations of high-quality nanocrystals in good yields tend to present some challenges. As an extensive number of reports show, the quality of photoluminescent nanoparticles usually correlates with increased optical-emission quantum yields. Herein, we examine the products from the cleaning steps, involving centrifugation and resuspension washes, of an established procedure for preparing cesium plumbobromide nanocrystals. The photoluminescence quantum yields of the collected nanocrystals drops by about 10% to 30% after each wash. At the same time, the average exciton lifetime increases by about a factor of four, which reflects a decrease in the radiative-decay rates by about factor of five, while the non-radiative ones increase by less than a factor of two. Further analysis indicates that decreasing the particles size, along with changing their morphology, alters some of the exciton traps, or “quenching” sites, on them. This size decrease, along with changes that accompany it, shorten the exciton lifetimes while enhancing the limited spatial overlap between the holes and the electrons of the excitons and considerably increasing the radiative rates of deactivation. These findings do not suggest that good quality nanoparticles should not necessarily manifest high emission quantum yields. Rather, they point to the complexity of nanomaterials, due to their inherent heterogeneity, that warrants multimodal analysis for understanding the exciton dynamics, while correlating it to observed structural characteristics. © 2022 The Author(s)

关键词： Cesium lead bromide CsPbBr3 Perovskite synthesis Poisson distribution Time-resolved emission spectroscopy

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Leaf-based energy harvesting and storage utilizing hygroscopic iron hydrogel for continuous power generation

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Nature communications 2025年第1期16卷 5267页

作者： Shuai Guo Yaoxin Zhang Zhen Yu Ming Dai Xuanchen Liu Hongbo Wang Siqi Liu J Justin Koh Wanxin Sun Yuanping Feng Yuanzheng Chen Lin Yang Peng Sun Geyu Lu Cunjiang Yu Wenshuai Chen Stefaan De Wolf Zuankai Wang Swee Ching Tan Department of Materials Science and Engineering 9 Engineering Drive 1 Singapore 117575 Singapore. China-UK Low Carbon College Shanghai Jiao Tong University Shanghai 201306 P.R. China. Key Laboratory of Bio-based Material Science and Technology Ministry of Education Northeast Forestry University Harbin 150040 P.R. China. Department of Mechanical Engineering The Hong Kong Polytechnic University Hong Kong P.R. China. Institute of Materials Research and Engineering (IMRE) Agency for Science Technology and Research (A*STAR) 2 Fusionopolis Way Innovis #08-03 Singapore 138634 Singapore. Division of Nano Surfaces Bruker Corporation 11 Biopolis Way Singapore 138667 Singapore. Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117551 Singapore. School of Physical Science and Technology Key Laboratory of Advanced Technologies of Materials Southwest Jiaotong University Chengdu 610031 P.R. China. Key Laboratory of Optoelectronic Technology and System of Ministry of Education College of Optoelectronic Engineering Chongqing University Chongqing 400044 P. R. China. State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun China. Department of Electrical and Computer Engineering University of Illinois Urbana-Champaign Urbana IL 61801 USA. Department of Materials Science and Engineering University of Illinois Urbana-Champaign Urbana IL USA. Department of Mechanical Science and Engineering University of Illinois Urbana-Champaign Urbana IL USA. Department of Bioengineering Materials Research Laboratory Beckman Institute for Advanced Science and Technology Nick Holonyak Micro and Nanotechnology Laboratory University of Illinois Urbana-Champaign Urbana IL USA. Key Laboratory of Bio-based Material Science and Technology Ministry of Education Northeast Forestry University Harbin 150040 P.R. China. chenwenshuai@nefu.edu.cn. Physical and Engineering Division (PSE) Kin

In the era of big data, developing next-generation self-powered continuous energy harvesting systems is of great importance. Taking advantage of fallen leaves' specific structural advantage gifted by nature, we propose a facile approach to convert fallen leaves into energy harvesters from ubiquitous moisture, based on surface treatments and asymmetric coating of hygroscopic iron hydrogels. Upon moisture absorption, a water gradient is established between areas with/without hydrogel coating, and maintained due to gel-like behaviors and leaf veins for water retention and diffusion restriction, thus forming electrical double layers over the leaf surface and showing capacitance-like behavior for energy charging and discharging. Besides, the specific leaf cell structures with small grooves enabled uniform carbon coatings instead of aggregations, and high electrical conductivity, resulting in 49 μA/cm and 497 μW/cm electrical output, achieving competitive performance with the state-of-art and potential for lower environmental impact compared to other types of energy harvesters.

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The Role of Synthetic Biology in Atmospheric Greenhouse Gas Reduction: Prospects and Challenges

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BioDesign Research 2020年第1期2020卷 1-8页

作者： Charles DeLisi Aristides Patrinos Michael MacCracken Dan Drell George Annas Adam Arkin George Church Robert Cook-Deegan Henry Jacoby Mary Lidstrom Jerry Melillo Ron Milo Keith Paustian John Reilly Richard J.Roberts Daniel Segrè Susan Solomon Dominic Woolf Stan D.Wullschleger Xiaohan Yang Department of Biomedical Engineering and Program in Bioinformatics College of EngineeringBoston UniversityBoston MA 02215USA The NOVIM Group Kohn HallUC Santa BarbaraCA 93106USA Climate Institute WashingtonDCUSA Department of Energy WashingtonDCUSA Center for Health Law Ethics&Human Rights at the Boston University School of Public HealthSchool of MedicineBoston UniversityUSA Department of Bioengineering University of CaliforniaBerkeley CAUSA Department of Genetics Harvard Medical SchoolCambridge MAUSA School for the Future of Innovation in Society Arizona State UniversityBarrett&O’Connor Washington Center1800 I StreetNWWashingtonDC 20006USA Sloan School of Management MITCambridge MAUSA Department of Chemical Engineering University of WashingtonSeattle WashingtonUSA The Ecosystems Center of the Marine Biological Laboratory in Woods Hole MAUSA Department of Plant and Environmental Sciences Weizmann Institute of ScienceRehovotIsrael Department of Soil and Crop Sciences Colorado State UniversityFort Collins CO 80523USA MIT Joint Program on the Science and Policy of Global Change MITCambridge MAUSA New England Biolabs Beverly MAUSA Department of Biology and Program in Bioinformatics Boston UniversityBoston MA 02215USA Department of Earth Atmospheric and Planetary SciencesMITCambridge MAUSA Soil and Crop Sciences Section School of Integrated Plant SciencesCornell UniversityIthaca NYUSA Environmental Sciences Division Oak Ridge National LaboratoryOak Ridge TNUSA Biosciences Division Oak Ridge National LaboratoryOak RidgeTNUSA

The long atmospheric residence time of CO2 creates an urgent need to add atmospheric carbon drawdown to CO2 regulatory *** and systems biology(SSB),which enables manipulation of cellular phenotypes,offers a powerful approach to amplifying and adding new possibilities to current land management practices aimed at reducing atmospheric *** participants(in attendance:Christina Agapakis,George Annas,Adam Arkin,George Church,Robert Cook-Deegan,Charles DeLisi,Dan Drell,Sheldon Glashow,Steve Hamburg,Henry Jacoby,Henry Kelly,Mark Kon,Todd Kuiken,Mary Lidstrom,Mike MacCracken,June Medford,Jerry Melillo,Ron Milo,Pilar Ossorio,Ari Patrinos,Keith Paustian,Kristala Jones Prather,Kent Redford,David Resnik,John Reilly,Richard ***,Daniel Segre,Susan Solomon,Elizabeth Strychalski,Chris Voigt,Dominic Woolf,Stan Wullschleger,and Xiaohan Yang)identified a range of possibilities by which SSB might help reduce greenhouse gas concentrations and which might also contribute to environmental sustainability and *** include,among other possibilities,engineering plants to convert CO2 produced by respiration into a stable carbonate,designing plants with an increased root-to-shoot ratio,and creating plants with the ability to self-fertilize.A number of serious ecological and societal challenges must,however,be confronted and resolved before any such application can be fully assessed,realized,and deployed.

关键词： Synthetic Roberts enable

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Hydrothermal growth of hydroxyapatite and ZnO bilayered nanoarrays on magnesium alloy surface with antibacterial activities

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Frontiers of materials science 2020年第1期14卷 14-23页

作者： Peng Mengke Hu Fenyan Du Minting Mai Bingjie Zheng Shurong Liu Peng Wang Changhao Chen Yashao School of Chemistry and Chemical Engineering Shaanxi Normal University Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) Xi’an 710119 College of Life Sciences Shaanxi Normal University Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Ministry of Education) National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China Xi’an 710119 College of Bioengineering Chongqing University Key Laboratory of Biorheological Science and Technology of Ministry of Education Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing Chongqing 400044

Magnesium alloy (MgA) has been extensively used as orthopedic and cardiovascular scaffolds in virtue of its good biocompatibility, unique biodegradability and excellent mechanical properties. However, poor corrosion resistance and easy infection after implantation seriously limit the potential applications of MgA in the biomedical field. Herein, we fabricated bilayered nanoarrays of hydroxyapatite nanorods (HANRs) and ZnO nanorods (ZnONRs) onto the surface of MgA (MgA-MgO-HANRs- ZnONRs) via micro-arc oxidation (MAO) treatment, microwave-assisted hydrothermal and hydrothermal methods. The morphology and chemical composition of MgA-MgOHANRs- ZnONRs was characterized by FE-SEM, XRD and EDS, indicating that HANRs-ZnONRs bilayered nanoarrays were fabricated on the surface of MgA-MgO. The surface of MgA-MgO-HANRs-ZnONRs exhibited excellent hydrophilicity as evidenced by the low water contact angle of 3°. Compared with the original MgA, the corrosion resistance of MgA-MgO-HANRs-ZnONRs was obviously improved with decreasing the corrosive current density (i_(corr)) of 2 orders of magnitude. The MgA-MgOHANRs- ZnONRs performed excellent antibacterial properties with the bactericidal rate of 96.5% against S. aureus and 94.3% against E. coli.

关键词： magnesium alloy nanoarray hydrothermal synthesis antibacterial activity corrosion resistance

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