Nanogenerators for energy harvesting technology

Jul 09, 2010

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 technologies that could potentially 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 ěm, 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 in flowing blood or peristaltic fluid movement in the GI tract to power smart implanable biometical 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."

Explore further: Study reveals new characteristics of complex oxide surfaces

More information: pubs.acs.org/doi/abs/10.1021/nl100812k

Provided by Stevens Institute of Technology

4.9 /5 (8 votes)

Related Stories

New fiber nanogenerators could lead to electric clothing

Feb 12, 2010

(PhysOrg.com) -- In research that gives literal meaning to the term "power suit," University of California, Berkeley, engineers have created energy-scavenging nanofibers that could one day be woven into clothing ...

Running Hamsters Can Power Nano Devices (Video)

Feb 12, 2009

(PhysOrg.com) -- Among the vast number of untapped energy sources are finger taps, heartbeats, and even hamsters running on exercise wheels. In a recent study, researchers from Georgia Tech have shown that ...

Recommended for you

Tough foam from tiny sheets

17 hours ago

Tough, ultralight foam of atom-thick sheets can be made to any size and shape through a chemical process invented at Rice University.

Graphene surfaces on photonic racetracks

Jul 28, 2014

In an article published in Optics Express, scientists from The University of Manchester describe how graphene can be wrapped around a silicon wire, or waveguide, and modify the transmission of light through it.

Simulating the invisible

Jul 28, 2014

Panagiotis Grammatikopoulos in the OIST Nanoparticles by Design Unit simulates the interactions of particles that are too small to see, and too complicated to visualize. In order to study the particles' behavior, he uses ...

Building 'invisible' materials with light

Jul 28, 2014

A new method of building materials using light, developed by researchers at the University of Cambridge, could one day enable technologies that are often considered the realm of science fiction, such as invisibility ...

User comments : 3

Adjust slider to filter visible comments by rank

Display comments: newest first

trekgeek1
not rated yet Jul 09, 2010
Place it near the diaphragm.
HealingMindN
not rated yet Jul 09, 2010
Nano-bots in the bloodstream. Please don't tell the politicians. They'll say everyone should have it.
xamien
not rated yet Jul 10, 2010
Healingmind, please refrain from being alarmist. Our literature has plenty of warning even for the most illiterate members of society to understand the dangers of taking something like this to extremes.