Bioinspired design of flexible strain sensor with high performance based on gradient filler distributions
Abstract(#br)Inspired by nature, nanocarbon black (nCB) was diffused into swollen polydimethylsiloxane (PDMS) to obtain flexible conductive composites, forming a gradient distribution morphology. The nCB was enriched in the surface layers and its loading decreased in the inner region and the distribution process was theoretically calculated. The mechanical properties of PDMS/nCB composites were close to those of pure PDMS due to the gradient nCB distribution, and the surface of PDMS/nCB presented super-hydrophobicity resulted from the rough surface, even under strains.