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Multifunctional Three-Dimensional Nanoelectronic Networks for Smart Materials and Cyborg Tissues

Dai, Xiaochuan
Fonte: Harvard University Publicador: Harvard University
Tipo: Thesis or Dissertation; text Formato: application/pdf
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Nanomaterials provide unique opportunities at the interface between nanoelectronics and biology. “Bottom-up” synthesized nanowire(NW) with defined functionality can be assembled and enabled into three-dimensional(3D) flexible nanoelectronic networks. The micro- to nanoscale electronic units blur the distinction between electronics and cells/tissue in terms of length scale and mechanical stiffness. These unconventional 3D nanoelectronic networks can thus provide a path towards truly seamless integration of non-living electronics and living systems. In this thesis, I will introduce a general method for fabricating 3D macroporous NW nanoelectronic networks and their integration with hydrogel, elastomer and living tissues, with an emphasis on the realization of two-way communication between active nanoelectronics and the passive or living systems in which they are embedded. First, fabrication of 3D macroporous NW nanoelectronic networks will be described. Examples showing hundreds of individually addressable, multifunctional nanodevices fully distributed and interconnected throughout 3D networks will be illustrated. Proof-of-concept studies of macroporous nanoelectronic networks embedded through hydrogels and polymers demonstrate the ability for dynamically mapping pH gradients and strain fields. Second...