Patent Number: 8,508,108

Title: Polymer metal composite membranes

Abstract: Systems and methods of harvesting and converting naturally occurring energy are described that include exposing a material to an ambient condition and harvesting at least a portion of energy that is created. Energy harvesting from fluidic and flow environments or vibration can be accomplished using types of energy harvesters, such as flexible polymers. Active materials or Electro-Active Polymer (EAP)-metal composite thin films like Ionic Polymers, Piezoceramic materials, and electromagnetic systems may be used as mechanical to electrical energy transducers. One type of an ionic EAP is ionic polymer-metal composite (IPMC), which includes a base polymer membrane that may be coated with a metal to act as a surface electrode. The surface electrode may be silver (Ag) nanoparticles. The silver nanoparticle functionalized IPMC can be used to convert mechanical vibrations and fluidic flow to electrical energy to power wireless devices and microelectronic systems, for example.

Inventors: Anand; Sandeep Venkit (Bangalore, IN), Mahapatra; Debiprosad Roy (Bangalore, IN)

Assignee: Indian Institute of Science

International Classification: H01L 41/113 (20060101); H01L 41/047 (20060101); H01L 41/18 (20060101)

Expiration Date: 2021-08-13 0:00:00