You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.
22 July 2003Piezoelectric energy harvesting using diaphragm structure
Energy harvesting using piezoelectric material is not a new concept, but its generation capability has not been attractive for mass energy generation. For this reason, little research has been done on the topic.
Recently, wearable computer concepts, as well as small portable electrical devices, are a few motivations that have ignited the study of piezoelectric energy harvesting again. The theory behind cantilever type piezoelectric elements is well known, but the transverse moving diaphragm elements, which can be used in pressure type energy generation is not yet fully developed. The power generation in a diaphragm depends on several factors. Among them, the thickness of each layer is important. In this paper, two diaphragm structures, unimorph and bi-morph, were used to calculate energy generation with varying thickness ratio using piezoelectric constitutive equation. The results of this analysis are presented with an eye toward guidelines for design of useful energy harvesting structure.
The alert did not successfully save. Please try again later.
Sunghwan Kim, William W. Clark, Qing-Ming Wang, "Piezoelectric energy harvesting using a diaphragm structure," Proc. SPIE 5055, Smart Structures and Materials 2003: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (22 July 2003); https://doi.org/10.1117/12.483587