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Printed microelectrode arrays on soft materials:from PDMS to hydrogels

npj Flexible Electronics 2018年第1期2卷 111-119页

作者： Nouran Adly Sabrina Weidlich Silke Seyock Fabian Brings Alexey Yakushenko andreas offenhausser Bernhard Wolfrum Institute of Bioelectronics(ICS-8)and JARA-Fundamentals of Future Information Technology Forschungszentrum JulichJulich 52425Germany Neuroelectronics-Munich School of Bioengineering Department of Electrical and Computer EngineeringTechnical University of MunichBoltzmannstrase 11D-85749 GarchingGermany

Microelectrode arrays(MEAs)provide promising opportunities to study electrical signals in neuronal and cardiac cell networks,restore sensory function,or treat disorders of the nervous ***,most of the currently investigated devices rely on silicon or polymer materials,which neither physically mimic nor mechanically match the structure of living tissue,causing inflammatory response or loss of ***,we present a new method for developing soft MEAs as bioelectronic *** functional structures are directly deposited on PDMS-,agarose-,and gelatin-based substrates using ink-jet printing as a patterning *** demonstrate the versatility of this approach by printing high-resolution carbon MEAs on PDMS and *** soft MEAs are used for in vitro extracellular recording of action potentials from cardiomyocyte-like HL-1 *** results represent an important step toward the design of next-generation bioelectronic interfaces in a rapid prototyping approach.

关键词： PDMS printing arrays

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Atomic switches of metallic point contacts by plasmonic heating

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Light(Science & Applications) 2019年第1期8卷 893-900页

作者： Weiqiang Zhang Hongshuang Liu Jinsheng Lu Lifa Ni Haitao Liu Qiang Li Min Qiu Bingqian Xu Takhee Lee Zhikai Zhao Xianghui Wang Maoning Wang Tao Wang andreas offenhausser Dirk Mayer Wang-Taek Hwang Dong Xiang Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Key Laboratory of Optical Information Science and TechnologyInstitute of Modern OpticsCollege of Electronic Information and Optical EngineeringNankai University300350 TianjinChina State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang University310027 HangzhouChina College of Engineering University of GeorgiaAthensGA 30602USA Department of Physics and Astronomy and Institute of Applied PhysicsSeoul National UniversitySeoul 08826Korea Institute of Materials Research and Engineering A*STAR2 Fusionopolis WayInnovisSingapore 138634Singapore Institute of Complex Systems ICS-8BioelectronicsResearch Center Juelich and JARA Fundamentals of Future Information TechnologyJülich 52425Germany

Electronic switches with nanoscale dimensions satisfy an urgent demand for further device miniaturization.A recent heavily investigated approach for nanoswitches is the use of molecular junctions that employ photochromic molecules that toggle between two distinct *** contrast to the reports on this approach,we demonstrate that the conductance switch behavior can be realized with only a bare metallic contact without any molecules under light *** demonstrate that the conductance of bare metallic quantum contacts can be reversibly switched over eight orders of magnitude,which substantially exceeds the performance of molecular *** the switch process,the gap size between two electrodes can be precisely adjusted with subangstrom accuracy by controlling the light intensity or *** by simulations,we reveal a more general and straightforward mechanism for nanoswitching behavior,i.e.,atomic switches can be realized by the expansion of nanoelectrodes due to plasmonic heating.

关键词： metallic behavior illumination

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