L M Swallow et al 2008 Smart Mater. Struct. 17 025017 doi:10.1088/0964-1726/17/2/025017
L M Swallow1, J K Luo1, E Siores1, I Patel1 and D Dodds2
Show affiliationsRapid technological advances in nanotechnology, microelectronic sensors and systems are becoming increasingly miniaturized to the point where embedded wearable applications are beginning to emerge. A restriction to the widespread application of these microsystems is the power supply of relatively sizable dimensions, weight, and limited lifespan. Emerging micropower sources exploit self-powered generators utilizing the intrinsic energy conversion characteristics of smart materials. 'Energy harvesting' describes the process by which energy is extracted from the environment, converted and stored. Piezoelectric materials have been used to convert mechanical into electrical energy through their inherent piezoelectric effect. This paper focuses on the development of a micropower generator using microcomposite based piezoelectric materials for energy reclamation in glove structures. Devices consist of piezoelectric fibres, 90–250 µm in diameter, aligned in a unidirectional manner and incorporated into a composite structure. The fibres are laid within a single laminate structure with copper interdigitated electrodes assembled on both sides, forming a thin film device. Performances of devices with different fibre diameters and material thicknesses are investigated. Experiments are outlined that detail the performance characteristics of such piezoelectric fibre laminates. Results presented show voltage outputs up to 6 V which is considered enough for potential applications in powering wearable microsystems.
85.50.-n Dielectric, ferroelectric, and piezoelectric devices
Issue 2 (April 2008)
Received 23 August 2007, in final form 20 December 2007
Published 13 February 2008
L M Swallow et al 2008 Smart Mater. Struct. 17 025017
M Bradley et al 2007 J. Phys.: Conf. Ser. 66 012010
Anirban Basu JHEP07(2002)011
A K Hartmann et al 2008 J. Phys.: Conf. Ser. 95 012011
Dong Qing-Rui 2008 J. Phys. D: Appl. Phys. 41 055105
Changhyun Ahn and Yutaka Ookouchi JHEP02(2004)009
Eung Jin Chun JHEP12(2009)055
A. J. Weinberger et al. 1999 The Astronomical Journal 117 2748
O Guyétand et al 2008 J. Phys. B: At. Mol. Opt. Phys. 41 051002
T K Sindhu et al 2008 Nanotechnology 19 025703