title: Ultra-flexible Piezoelectric Devices Integrated with Heart to Harvest the Biomechanical Energy.
abstract: Power supply for medical implantable devices (i.e. pacemaker) always challenges not only the surgery but also the battery technology. Here, we report a strategy for energy harvesting from the heart motion by using ultra-flexible piezoelectric device based on lead zirconate titanate (PZT) ceramics that has most excellent piezoelectricity in commercial materials, without any burden or damage to hearts. Experimental swine are selected for in vivo test with different settings, i.e. opened chest, close chest and awake from anesthesia, to simulate the scenario of application in body due to their hearts similar to human. The results show the peak-to-peak voltage can reach as high as 3 V when the ultra-flexible piezoelectric device is fixed from left ventricular apex to right ventricle. This demonstrates the possibility and feasibility of fully using the biomechanical energy from heart motion in human body for sustainably driving implantable devices.
authors.affiliation: AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China.|Center for Mechanics and Materials, Tsinghua University, Beijing, 100084, China.
authors.forename: Bingwei
authors.initials: B
authors.lastname: Lu
authors.affiliation: AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China.|Center for Mechanics and Materials, Tsinghua University, Beijing, 100084, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.affiliation: AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China.|Center for Mechanics and Materials, Tsinghua University, Beijing, 100084, China.
authors.forename: Dapeng
authors.initials: D
authors.lastname: Ou
authors.affiliation: AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China.|Center for Mechanics and Materials, Tsinghua University, Beijing, 100084, China.
authors.forename: Hang
authors.initials: H
authors.lastname: Chen
authors.affiliation: Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
authors.forename: Liwei
authors.initials: L
authors.lastname: Diao
authors.affiliation: Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zheng
authors.affiliation: Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
authors.forename: Weiguo
authors.initials: W
authors.lastname: Ma
authors.affiliation: Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
authors.forename: Lizhong
authors.initials: L
authors.lastname: Sun
authors.affiliation: AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China.|Center for Mechanics and Materials, Tsinghua University, Beijing, 100084, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Feng
mesh_terms: D000818:Animals; D002516:Ceramics; D004867:Equipment Design / Q000295:instrumentation; D006321:Heart / Q000502:physiology*; D007854:Lead / Q000378:metabolism*; D010138:Pacemaker, Artificial; D019736:Prostheses and Implants; D013552:Swine; D014025:Titanium / Q000378:metabolism*; D015040:Zirconium / Q000378:metabolism*
chemical_list: C065536:lead titanate zirconate; D007854:Lead; D015040:Zirconium; D014025:Titanium