Direct writing of elastomer composites into 3D-structured stretchable electronics
발표자
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초록
내용
Extrusion-based direct ink writing offers an attractive opportunity to realize programmable 3D layouts with soft functional materials. However, the difficulties in manipulating rheological behaviors of elastomer composites have only allowed their layerwise deposition, requiring supporting layers for building 3D geometries. In this work, we report omnidirectional printing of elastic conductors by emulsifying elastomer composites with nonvolatile solvents. Our strategy simultaneously achieves superior viscoelastic properties that retain the structural integrity of printed features, and shear-thinning and lubrication behaviors that provide excellent printing stability. Self-supporting and out-of-plane 3D geometries of intrinsically stretchable conductors are directly written, achieving great stretchability, fine feature size, and high electrical conductivity. These results pave a new way for maximizing the design diversity of on-skin electronics.