The journal, Nano Letters, recently published an article highlighting the fascinating nanogenerators developed by Dr. Yong Shi, a professor in the Mechanical Engineering Department at Stevens Institute of Technology. The paper was entitled, "1.6 V Nanogenerator for Mechanical Energy Harvesting Using PZT Nanofibers."
Dr. Shi's work focuses on miniature energy harvesting technologies that could potentially power wireless electronics, portable devices, stretchable electronics, and implantable biosensors. The concept involves piezoelectric nanowire- and nanofiber-based generators that would power such devices through a conversion of mechanical energy into electrical energy. Dr. Shi uses a piezoelectric nanogenerator based on PZT nanofibers. The PZT nanofibers, with a diameter and length of approximately 60 nm and 500 ým, are aligned on interdigitated electrodes of platinum fine wires and packaged using a soft polymer on a silicon substrate. The measured output voltage and power under periodic stress application to the soft polymer was 1.63 V and 0.03 MicroWatts, respectively.
This amazing breakthrough in piezoelectric nanofiber research has incredible potential to enable new technology development across a multitude of science and engineering industries and related research.
"One of the major limitations of current active implantable biomedical devices is that they are battery powered. This means that they either have to be recharged or replaced periodically. Dr. Shi's group has demonstrated a technology that will allow implantable devices to recover some of the mechanical energy in flowing blood or peristaltic fluid movement in the GI tract to power smart implanable biomedical devices," says, Dr. Arthur Ritter, Director of Biomedical Engineering at Stevens. "The fact that his technology is based on nano-structures makes possible power supplies for nano-robots that can exist in the blood stream for extended periods of time and transmit diagnostic data, take samples for biopsy and/or send images wirelessly to external data bases for analysis."
Dr. Shi's groundbreaking work is part of a rich Institute-wide research community that investigates Nanotechnology and Multiscale Systems in a collaborative entrepreneurial environment.
Learn more about Dr. Yong Shi's exciting new PZT nanofibers:
Academics, Research & Entrepreneurship at Stevens Institute of Technology
Founded in 1870, Stevens Institute of Technology, The Innovation University, is dedicated to providing a unique learning curriculum, cutting-edge research and an infusion of entrepreneurial endeavors that prepare graduates for the professional workplace and support their capacity to nurture startups and the business development process.
Stevens offers baccalaureates, master's and doctoral degrees in engineering, science, computer science, systems engineering, business, technology and management as well as baccalaureate degrees in the humanities and liberal arts.
To learn more, please visit: http://www.stevens.edu/sit/academics/index.cfm
AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.