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Dynamic asymmetric mechanical responsive carbon nanotube fiber for ionic logic gate

Chinese Chemical Letters 2024年第6期35卷 249-253页

作者： Pei Cao Yilan Wang Lejian Yu Miao Wang Liming Zhao Xu Hou State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province Department of BiomaterialsResearch Center of Biomedical Engineering of XiamenCollege of MaterialsXiamen UniversityXiamen 361005China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Institute of Artificial Intelligence Xiamen UniversityXiamen 361005China Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China Engineering Research Center of Electrochemical Technologies of Ministry of Education Xiamen UniversityXiamen 361005China

Inspired by biological ion channels,numerous artificial asymmetric ion channels have been synthesized to facilitate the fabrication of ionic ***,the creation of biomimetic asymmetric ion channels necessitates expensive scientific apparatus and intricate material processing procedures,which constrains its advancement within the realm of ionic *** this study,we have devised dynamic asymmetric ion channels with mechanical responsiveness by combining polymers of varying elastic modulus along the longitudinal axis of carbon nanotube fiber(CNTF).The ion rectification can be modulated via the disparate response of CNTF-based ion channels to mechanical *** have effectively employed these asymmetric ion channels with mechanical sensitivity in the design of a logic gate device,achieving logic operations such as“AND”and“OR”.The conception of these dynamic asymmetric ion channels with mechanical sensitivity offers a straightforward,cost-effective,and versatile approach for generating ion channels,highlighting their potential application in intricate,highly integrated ionic circuits.

关键词： Carbon nanotubes fibers Mechanical response rectification effect Ionic logic gate

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Selective growth of wide band gap atomically thin Sb2O3 inorganic molecular crystal on WS2

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Nano Research 2019年第11期12卷 2781-2787页

作者： Guangzhuang Sun Bo Li Shifa Wang Zhengwei Zhang Jia Li Xidong Duan Xiangfeng Duan State Key Laboratory for Chemo/Biosensing and Chemometrics and Hunan Key Laboratory of Two Dimensional Materials College of Chemistry and Chemical EngineeringHunan UniversitChangsha 410082China Department of Applied Physics School of Physics and ElectronicsHunan UniversityChangsha 410082China School of Electronic and Information Engineering Chongqing Three Gorges UniversityChongqing Wanzhou 404000China Department of Chemistry and Biochemistry University of CaliforniaLos AngelesCalifornia 90095USA

Heterostructures combined by different individual two-dimensional(2D)materials are essential building blocks to realize unique electronic,optoelectronic properties and multifunctional *** date,the direct growth of 2D/2D atomic van der Waals heterostructures(vdWHs)have been extensively ***,the heterostructures from 2D inorganic molecular crystals and atomic crystals have been rarely *** we report two-step direct epitaxial growth of the inorganic molecular-atomic Sb2O3/WS2 *** thickness of Sb2O3 nanosheets on WS2 nanosheets can be tuned by variable growth *** growth behavior of Sb2O3 on WS2 was determined through *** images,Raman spectra,Raman mappings and selected-area electron diffraction(SAED),etc.,reveal that Sb2O3/WS2 heterostructures are vertically stacked with high crystal *** transport measurements demonstrate that the heterotransistors based on the heterostructures possess high current on/off ratio of 5 × 10^5,obvious gate-tunable and current rectification output *** characterizations show that the heterostructures have a clear photoresponse with high responsivity of 16.4 *** growth of vdWHs from 2D inorganic molecular-atomic crystals may open up new opportunities in 2D functional electronics and optoelectronics.

关键词： vapor phase epitaxy selective growth Sb2O3/WS2 heterostructures band alignment rectification effect

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