Ultrasensitive and Self-powered PDVF Nanofiber Strain Sensors

Applications

  • Wearable electronics
  • Sport performance monitoring and human motion capture
  • Structural health monitoring and rehabilitation
  • Artificial limbs

Problem Addressed

With the advent of artificial limb and advanced human motion capturing technology, stretchable, self-powered and ultrasensitive nano-sensors exhibiting strong piezoelectric behavior are requisite. Current sensor technology relies on expensive and externally-powered sensors with complex designs and low stretchability. 

Technology

The invention utilizes special properties of Polyvinylidene fluoride (PVDF)-derived sensor technology to produce an inexpensive, self-powered and ultrasensitive strain sensor with a high response speed, high stretchability, and strong piezoelectric behavior. Utilizing a new fabrication process and a special synthetic polymer substance, PVDF, the inventors developed a strain sensor with novel characteristics. The simple fabrication method retains the innate flexibility of PVDF, while guaranteeing strong piezoelectric behavior, reliability in manufacture and high yields in fabrication. The resulting strain sensor is ultrasensitive, flexible and self-powered, making it an ideal candidate for wearable electronics applications, with potential for use in large area arrays.

Advantages

  • High response speed and stretchability with strong piezoelectric behavior
  • Simple and inexpensive fabrication process ensures reliability and repeatability
  • Self-powered design ideal for wearable electronics applications