Direct Printing of Stretchable Elastomers for Highly Sensitive Capillary Pressure Sensors.

ABSTRACT: We demonstrate the successful fabrication of highly sensitive capillary pressure sensors using an innovative 3D printing method. Unlike conventional capacitive pressure sensors where the capacitance changes were due to the pressure-induced interspace variations between the parallel plate electrodes, in our capillary sensors the capacitance was determined by the extrusion and extraction of liquid medium and consequent changes of dielectric constants. Significant pressure sensitivity advances up to 547.9 KPa-1 were achieved. Moreover, we suggest that our innovative capillary pressure sensors can adopt a wide range of liquid mediums, such as ethanol, deionized water, and their mixtures. The devices also showed stable performances upon repeated pressing cycles. The direct and versatile printin

SUBMITTER: Liu W 

PROVIDER: S-EPMC5948908 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature