Journal
ELECTRONICS LETTERS
Volume 51, Issue 3, Pages 284-285Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el.2014.3400
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Funding
- Pioneer Research Center Program [2010-0019453]
- ITRC (Information Technology Research Center) support program [NIPA-2014-H0301-14-1008]
- Ministry of Public Safety & Security (MPSS), Republic of Korea [H8501-15-1010] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [22A20130012145, 2010-0019453] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Proposed is a helical piezoelectric structure for a highly stretchable energy harvester to be applied on the human body. The proposed device consists of two counter-wound helical structures around a zcore structure made of an elastic fabric string. The inner fabric helix is used to separate the outer piezoelectric helix from the core to obtain a highly stretchable device. When stretched by 60% of its initial length, the device generates a maximum output voltage and power of 140 Vp-p and 0.6 mW, respectively, at an operation frequency of 4 Hz.
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