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Stretchable,breathable,and washable epidermal electrodes based on microfoam reinforced ultrathin conductive nanocomposites

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Nano Research 2023年第7期16卷 10412-10419页

作者： Tao Ma Yong Lin Xiaohui Ma Jiaxue Zhang Dongchan Li desheng kong School of Chemical Engineering and Technology Hebei University of TechnologyTianjin 300130China College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life Scienceand Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210046China

Stretchable epidermal electronics allow conformal interactions with the human body for emerging applications in wearable health monitoring and *** devices are commonly constructed on submillimeter-thick elastomer substrates with limited moisture permeability,thereby leading to unpleasant sensations during long-term *** the ultrathin elastomer membrane may address this problem,the mechanical robustness is essentially lost for direct manipulations and repetitive ***,we report a stretchable,breathable,and washable epidermal electrode of microfoam reinforced ultrathin conductive nanocomposite(MRUCN).The new architecture involves ultrathin conductive silver nanowire nanocomposite features supported on a porous elastomeric microfoam substrate,which exhibits high moisture permeability for pleasant perceptions during epidermal ***-prepared epidermal electrodes show excellent electronic conductivity(8440 S·cm^(-1)),high feature resolution(~50μm),decent stretchability,and excellent *** addition,the MRUCN retains stable electrical properties during washing to meet the hygiene requirements for repetitive *** successful implementation in an integrated electronic patch demonstrates the practical suitability of MRUCN for a broad range of epidermal electronic devices and systems.

关键词： stretchable conductor epidermal electronics breathable conductor epidermal electrode

Fully solution processed liquid metal features as highly conductive and ultrastretchable conductors

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npj Flexible Electronics 2021年第1期5卷 221-228页

作者： Hangyu Zhu Shaolei Wang Menghu Zhang Tingyu Li Gaohua Hu desheng kong College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life Scienceand Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210046China

Liquid metal represents a highly conductive and inherently deformable conductor for the development of stretchable *** widespread implementations of liquid metal towards functional sensors and circuits are currently hindered by the lack of a facile and scalable patterning *** this study,we report a fully solution-based process to generate patterned features of the liquid metal *** entire process is carried out under ambient conditions and is generally compatible with various elastomeric *** as-prepared liquid metal feature exhibits high resolution(100μm),excellent electrical conductivity(4.15×10^(4)S cm^(−1)),ultrahigh stretchability(1000%tensile strain),and mechanical *** practical suitability is demonstrated by the heterogeneous integration of light-emitting diode(LED)chips with liquid metal interconnects for a stretchable and wearable LED *** solution-based technique reported here is the enabler for the facile patterning of liquid metal features at low cost,which may find a broad range of applications in emerging fields of epidermal sensors,wearable heaters,advanced prosthetics,and soft robotics.

关键词： wear liquid solution

Characterization of human IgM and IgG repertoires in individuals with chronic HIV-1 infection

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Virologica Sinica 2022年第3期37卷 370-379页

作者： Xiaolong Tian Binbin Hong Xiaoyi Zhu desheng kong Yumei Wen Yanling Wu Liying Ma Tianlei Ying MOE/NHC Key Laboratory of Medical Molecular Virology School of Basic Medical SciencesShanghai Medical CollegeFudan UniversityShanghai200032China Central Laboratory The Second Affiliated Hospital of Fujian Medical UniversityQuanzhou362000China State Key Laboratory of Infectious Disease Prevention and Control National Center for AIDS/STD Control and PreventionChinese Center for Disease Control and PreventionBeijing102206China Shanghai Engineering Research Center for Synthetic Immunology Shanghai200032China Shanghai Key Laboratory of Lung Inflammation and Injury Shanghai200032China

Advancements in high-throughput sequencing(HTS)of antibody repertoires(Ig-Seq)have unprecedentedly improved our ability to characterize the antibody repertoires on a large ***,currently,only a few studies explored the influence of chronic HIV-1 infection on human antibody repertoires and many of them reached contradictory conclusions,possibly limited by inadequate sequencing depth and *** better understand how HIV-1 infection would impact humoral immune system,in this study,we systematically analyzed the differences between the IgM(HIV-IgM)and IgG(HIV-IgG)heavy chain repertoires of HIV-1 infected patients,as well as between antibody repertoires of HIV-1 patients and healthy donors(HH).Notably,the public unique clones accounted for only a negligible proportion between the HIV-IgM and HIV-IgG repertoires libraries,and the diversity of unique clones in HIV-IgG remarkably *** aspect of somatic mutation rates of CDR1 and CDR2,the HIV-IgG repertoire was higher than ***,the average length of CDR3 region in HIV-IgM was significant longer than that in the HH repertoire,presumably caused by the great number of novel VDJ rearrangement patterns,especially a massive use of ***,some of the B cell clonotypes had numerous clones,and somatic variants were detected within the clonotype lineage in HIV-IgG,indicating HIV-1 neutralizing *** in-depth characterization of HIV-IgG and HIV-IgM repertoires enriches our knowledge in the profound effect of HIV-1 infection on human antibody repertoires and may have practical value for the discovery of therapeutic antibodies.

关键词： Ig-seq HIV-1 Antibody repertoire VDJ rearrangement Junctional diversity

Transition-metal doped edge sites in vertically aligned MoS2 catalysts for enhanced hydrogen evolution

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Nano Research 2015年第2期8卷 566-575页

作者： Haotian Wang Charlie Tsai desheng kong Karen Chan Frank Abild-Pedersen Jens K. Norskov Yi Cui Department of Applied Physics Stanford University Stanford CA 93205 USA Department of Chemical Engineering Stanford University Stanford CA 94305 USA SUNCAT Center for Interface Science and Catalysis SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park CA 94025 USA Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA Stanford Institute for Materials and Energy Sciences SLAC NationalAccelerator Laboratory 2575 Sand Hill Road Menlo Park CA 94025 USA .

Highly active and low-cost catalysts for electrochemical reactions such as the hydrogen evolution reaction （HER） are crucial for the development of efficient energy conversion and storage technologies. Theoretical simulations have been instrumental in revealing the correlations between the electronic structure of materials and their catalytic activity, and guide the prediction and development of improved catalysts. However, difficulties in accurately engineering the desired atomic sites lead to challenges in making direct comparisons between experi- mental and theoretical results. In MoS2, the Mo-edge has been demonstrated to be active for HER whereas the S-edge is inert. Using a computational descriptor- based approach, we predict that by incorporating transition metal atoms （Fe, Co, Ni, or Cu） the S-edge site should also become HER active. Vertically standing, edge-terminated MoS2 nanofilms provide a well-defined model system for verifying these predictions. The transition metal doped MoS2 nanofilms show an increase in exchange current densities by at least two-fold, in agreement with the theoretical calculations. This work opens up further opportunities for improving electrochemical catalysts by incorporating promoters into particular atomic sites, and for using well-defined systems in order to understand the origin of the promotion effects.

关键词： molybdenum disulfide chemical vapor deposition doping density functional theory

A Generic Strategy to Create Mechanically Interlocked Nanocomposite/Hydrogel Hybrid Electrodes for Epidermal Electronics

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Nano-Micro Letters 2024年第5期16卷 120-133页

作者： Qian Wang Yanyan Li Yong Lin Yuping Sun Chong Bai Haorun Guo Ting Fang Gaohua Hu Yanqing Lu desheng kong College of Engineering and Applied Sciences National Laboratory of Solid State Microstructureand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023People’s Republic of China State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210023People’s Republic of China College of Chemical Engineering and Technology Engineering Research Center of Seawater Utilization Technology of Ministry of EducationState Key Laboratory of Reliability and Intelligence of Electrical EquipmentHebei University of TechnologyTianjin 300130People’s Republic of China Key Laboratory of Intelligent Optical Sensing and Manipulation Nanjing UniversityNanjing 210093People’s Republic of China

Stretchable electronics are crucial enablers for next-generation wearables intimately integrated into the human *** the primary compliant conductors used in these devices,metallic nanostructure/elastomer composites often struggle to form conformal contact with the textured *** electrodes have been consequently developed based on conductive nanocomposite and soft hydrogels to establish seamless skin-device ***,chemical modifications are typically needed for reliable bonding,which can alter their original *** overcome this limitation,this study presents a facile fabrication approach for mechanically interlocked nanocomposite/hydrogel hybrid *** this physical process,soft microfoams are thermally laminated on silver nanowire nanocomposites as a porous interface,which forms an interpenetrating network with the *** microfoam-enabled bonding strategy is generally compatible with various *** resulting interlocked hybrids have a 28-fold improved interfacial toughness compared to directly stacked *** electrodes achieve firm attachment to the skin and low contact impedance using tissue-adhesive *** have been successfully integrated into an epidermal sleeve to distinguish hand gestures by sensing mus-cle *** nanocomposite/hydrogel hybrids reported here offer a promising platform to combine the benefits of both materials for epidermal devices and systems.

关键词： Stretchable electronics Epidermal electronics Silver nanowire Conductive nanocomposites Hydrogel

Role of extracellular polymeric substances in resistance to allelochemical stress on Microcystis aeruginsosa and its mechanism

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Journal of Oceanology and Limnology 2023年第6期41卷 2219-2231页

作者： Li YIN Ying XU desheng kong Juan WANG Kaipian SHI Yong ZHANG Huan HE Shaogui YANG Lixiao NI Shiyin LI School of Environment Nanjing Normal UniversityNanjing 210023China Department of Geological Sciences University of AlabamaTuscaloosaAL 35487USA Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education/School of Environment Hohai UniversityNanjing 210098China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China

Using allelochemicals to suppress cyanobacteria growth is a prospective method for its high efficiency and ecological ***,the suppression efficiency is affected inevitably by the extracellular polymeric substances(EPS)produced by cyanobacteria,and the knowledge about the roles of EPS in resistance to allelochemical stress is *** the study,two typical anti-cyanobacterial allelochemicals were adopted to investigate the role of EPS in resistance to allelochemical stress on Microcystis *** show that EPS was crucial in alleviating the toxicity of allelochemicals to algae,especially in stabilizing the metabolism and photosynthetic activity of algal *** aggregation rate of algal cells increased with the increase of EPS secretion,which alleviated the stress of *** proteins and humic acids in EPS provided a binding site for allelochemicals,and the EPS-allelochemicals complex were formed by chemical *** study improved our comprehension of the role of EPS in algal inhibition by allelochemicals.

关键词： allelochemicals extracellular polymeric substances cyanobacteria Microcystis aeruginosa allelopathy

Skin-inspired electronics:emerging semiconductor devices and systems

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Journal of Semiconductors 2020年第4期41卷 7-20页

作者： Zhong Ma desheng kong Lijia Pan Zhenan Bao Collaborative Innovation Center of Advanced Microstructures School of Electronic Science and EngineeringNanjing UniversityNanjing 210093China College of Engineering and Applied Science Nanjing UniversityNanjing 210093China Department of Chemical Engineering Stanford UniversityStanfordCA 94305USA

Current electronics are driven by advanced microfabrication for fast and efficient information *** spite of high performance,these wafer-based devices are rigid,non-degradable,and unable to autonomous ***-inspired electronics have emerged as a new class of devices and systems for next-generation flexible and wearable *** technology gains inspiration from the structures,properties,and sensing mechanisms of the skin,which may find a broad range of applications in cutting-edge fields such as healthcare monitoring,human-machine interface,and soft robotics/*** demands have fueled the development of electronic materials with skin-like properties in terms of stretchability,self-healing capability,and *** materials provide the basis for functional sensors with innovative and biomimetic *** system-level integrations and optimizations enable new forms of electronics for real-world *** review summarizes recent advancements in this active area and speculates on future directions.

关键词： electronic skin flexible electronics human-machine interface health monitoring soft robots

Mutation N856K in spike reduces fusogenicity and infectivity of Omicron BA.1

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Signal Transduction and Targeted Therapy 2023年第3期8卷 908-911页

作者： Chunyun Sun Huiyu Wang Ji Yang desheng kong Yuning Chen Haiyue Wang Lingling Sun Jianbo Lu Min Teng Liangzhi Xie Beijing Engineering Research Center of Protein and Antibody Sinocelltech Ltd.Beijing 100176China Beijing Key Laboratory of Monoclonal Antibody Research and Development Sino Biological Inc.Beijing 100176China Cell Culture Engineering Center Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100005China

Dear Editor,COVID-19 lung pathology is characterized by interstitial pneumonia with cell-cell fusion-induced syncytia and extensive tissue damage.1 The correlation between viral fusogenicity and pathogenicity has been reported in SARS-CoV-2 variants.2 Compared with the previous Delta or D614G variants,Omicron BA.1 has been proven to be less fusogenic and pathogenic.

关键词： lung pathology damage

hiPSC-derived NSCs effectively promote the functional recovery of acute spinal cord injury in mice

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解剖学杂志 2021年第S1期44卷 216-217页

作者： Ma Jun kong desheng Cui Huixian Department of Anatomy Hebei Medical UniversityShijiazhuang 050017

Spinal cord injury(SCI)is a common disease that results in motor and sensory disorders and even lifelong paralysis..The transplantation of stem cells,such as embryonic stem cells(ESCs),induced pluripotent stem cells(iPSCs),mesenchymal stem cells(MSCs),or subsequently generated stem/progenitor cells,was predicted to be a promising treatment for *** this study,we aimed to investigate effect of human iPSC-derived neural stem cells(hiPSC-NSCs)and umbilical cord-derived MSCs(huMSCs)in a mouse model of acute *** SCI mice model was established and were randomly treated as phosphate-buffered saline(PBS)(control group),repaired with 1×10^(5)hiPSC-NSCs(NSC group),and 1×10^(5)huMSCs(MSC group),respectively,in a total of 54 *** limb motor function was evaluated in open-field tests using the Basso Mouse Scale(BMS)at days post operation(dpo)1,3,5,and 7 after spinal cord injury,and weekly *** cord and serum samples were harvested at dpo 7,14,and 21.

关键词： acute Acute injury