Development of Patterns For Nano-scale Strain Measurements. Part I: Fabrication of Imprinted Au Webs for Polymeric Materials

ABSTRACT: A method is presented for patterning polymers with nanoscale gold networks and using the pattern to measure strain in the polymer. A gold film is first coated on a porous alumina template. After coating, the template is impressed into a polymer, and the template is dissolved to leave a continuous metal network on or slightly below the surface of a polymer. The network has a random structure appropriate for use in non-contact deformation measurements via SEM or ESEM imaging with digital image correlation. In addition, the metal is electrically conductive and has potential applicability for health monitoring systems as a means of measuring deformation through changes in electrical conductivity and continuity and also as a means to measure local material response by digital image correlation (DIC) or related methods during controlled loading.

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