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Twin-Wire Networks for Zero Interconnect,High-Density 4-Wire Electrical Characterizations of Materials

Research 2022年第2期2022卷 225-234页

作者： nerio andres montoya Valeria Criscuolo Andrea Lo Presti Raffaele Vecchione Christian Falconi Department of Electronic Engincering University of Rome Tor VergataVia del Politecnico 1Roma 00133Italy School of Physics Universidad Nacional de ColombiaA.A.3840 MedellinColombia Center for Advanced Biomaterial for Health Care Istituto Italiano di TecnologiaLargo Barsantie Matteucci 53Naples 80125Italy

Four-wire measurements have been introduced by Lord Kelvin in 1861 and have since become the standard technique for characterizing small resistances and ***,high-density 4-wire measurements are generally complex,time-consuming,and inefficient because of constraints on interconnects,pads,external wires,and mechanical contacts,thus reducing reproducibility,statistical significance,and throu ***,we introduce,systematically design,analyze,and experimentally validate zero interconnect networks interfaced to external instrumentation by couples of twin wire.3D-printed holders with magnets,interconnects,nonadhesive layers,and spacers can effortlessly establish excellent electrical connections with tunable or minimum contact forces and enable accurate measurements even for delicate devices,such as thin metals on soft *** an example,we measured all the resistances of a twin-wire 29-resistor network made of silver-nanoparticle ink printed on polyimide,paper,or photo paper,including during sintering or temperature calibration,resulting in anunprecedentedly easy and accurate characterization of both resistivity and its temperature *** theoretical framework and experimental strategies reported here represent a breakthrough toward zero interconnect,simple,and efficient high-density 4-wire characterizations,can be generalized to other 4-wire measurements(impedances,sensors)and can open the way to more statistically meaningful and reproducible analyses of materials,high-throughput measurements,and minimally invasive characterizations of biomaterials.

关键词： impedance characterization breakthrough

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