Tactile sensor array for soft tissue elasticity imaging

Details Tactile sensor array for soft tissue elasticity imaging Tactile sensor array for soft tissue elasticity imaging

2010-11-10

2011-12-06

Szmal, Brian (Department: 3736)

Measuring and testing

Dynamometers

Responsive to multiple loads or load components

C073S862041

Reexamination Certificate

active

08069735

ABSTRACT:
A tactile sensor array includes a first electrode layer and a second electrode layer with a two-phase compressible dielectric material therebetween. A ferroelectret film is used as a dielectric layer. In some embodiments, to improve sensor sensitivity and at the same time provide for high stability and reproducibility of sensor readings, the ferroelectret film is vented to atmosphere via a venting network of channels traversing at least one electrode layer and a curved rigid substrate. In some embodiments, an elastic supporting structure is provided that comprises individual elastic fastening elements connecting all layers of the sensor together. These individual elastic fastening elements are located throughout the layers of the sensor and prevent cross-talk between the individual sensors that may be caused by local shifts of parts of the sensor during use.

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