Accession Number:

ADA622887

Title:

Energy Harvesting & Recapture from Human Subjects: Dual-Stage MEMS Cantilever Energy Harvester

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT

Personal Author(s):

Report Date:

2015-03-01

Pagination or Media Count:

100.0

Abstract:

Recent thermal energy harvesting research has advanced alternative non-Seebeck devices and shifted attention towards applications with low temperature differentials near ambient. This research effort takes a simulation-based approach to improve the performance of a modified dual-stage MEMS cantilever energy harvester. The device employs a bimetal and a piezoelectric transducer to harvest energy from a 10 Degrees C temperature differential. The proposed application for the device is as a wearable energy harvester, capable of generating power from the human body using skin temperature average 33 Degrees C as the hot side and ambient air 23 Degrees C as the cold side. A bimetal thickness scaling study is conducted, in which the 1.5 micrometers thickness yields the maximum electrical power output of 36.82 nW per device. This translates to a power density of 5.68 mWcm2, which surpasses the performance of many Seebeck and non-Seebeck designs from the literature.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electric Power Production and Distribution
  • Thermodynamics
  • Biomedical Instrumentation and Bioengineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE