Men build dams and huge turbines to turn the energy of waterfalls and tides into electricity. To produce hydropower on a much smaller scale, Chinese scientists have now developed a lightweight power generator based on carbon nanotube fibers suitable to convert even the energy of flowing blood in blood vessels into electricity.
They describe their innovation in the journal Angewandte Chemie.
For thousands of years, people have used the energy of flowing or falling water for their purposes, first to power mechanical engines such as watermills, then to generate electricity by exploiting height differences in the landscape or sea tides. Using naturally flowing water as a sustainable power source has the advantage that there are (almost) no dependencies on weather or daylight. Even flexible, minute power generators that make use of the flow of biological fluids are conceivable. How such a system could work is explained by a research team from Fudan University in Shanghai, China. Huisheng Peng and his co-workers have developed a fiber with a thickness of less than a millimeter that generates electrical power when surrounded by flowing saline solution—in a thin tube or even in a blood vessel.
The construction principle of the fiber is quite simple. An ordered array of carbon nanotubes was continuously wrapped around a polymeric core. Carbon nanotubes are well known to be electroactive and mechanically stable; they can be spun and aligned in sheets. In the as-prepared electroactive threads, the carbon nanotube sheets coated the fiber core with a thickness of less than half a micron. For power generation, the thread or “fiber-shaped fluidic nanogenerator” (FFNG), as the authors call it, was connected to electrodes and immersed into flowing water or simply repeatedly dipped into a saline solution. “The electricity was derived from the relative movement between the FFNG and the solution,” the scientists explained. According to the theory, an electrical double layer is created around the fiber, and then the flowing solution distorts the symmetrical charge distribution, generating an electricity gradient along the long axis.
The power output efficiency of this system was high. Compared with other types of miniature energy-harvesting devices, the FFNG was reported to show a superior power conversion efficiency of more than 20%. Other advantages are elasticity, tunability, lightweight, and one-dimensionality, thus offering prospects of exciting technological applications. The FFNG can be made stretchable just by spinning the sheets around an elastic fiber substrate. If woven into fabrics, wearable electronics become thus a very interesting option for FFNG application. Another exciting application is the harvesting of electrical energy from the bloodstream for medical applications. First tests with frog nerves proved to be successful.
The Latest on: Nanogenerator
- Bloodstream energy and building 'Fitbits': the best green innovations of the week on September 14, 2017 at 4:34 pm
Based on the concept of hydropower, which uses the flow of water to turn turbines to generate electricity, the new devices use carbon nanotubes to create “fiber-shaped fluidic nanogenerator” (FFNG) threads. The FFNG is attached to electrodes before ... […]
- Hydropower Plant Inside A Human Body? Why Not on September 14, 2017 at 9:52 am
The device was developed by Chinese scientists from Shanghai-based Fudan University, led by Huisheng Peng. The nanogenerator (nanoscale generator) is made from carbon nanotubes that are spun and aligned into sheets. The sheets are then wrapped around a ... […]
- John Wiley & Sons : Wiley announces new Data Sharing and Citation policies to improve transparency in research on September 14, 2017 at 9:27 am
09/08 HOW TO DRAW ELECTRICITY FROM THE BLO: A one-dimensional fluidic nanogenerator w.. 09/07 JOHN WILEY & SONS: Wiley Announces Partnership with American Academy of Periodo.. […]
- How to draw electricity from the bloodstream on September 12, 2017 at 3:13 pm
For power generation, the thread or "fiber-shaped fluidic nanogenerator" (FFNG), as the authors call it, was connected to electrodes and immersed into flowing water or simply repeatedly dipped into a saline solution. "The electricity was derived from the ... […]
- Electricity Harvested From Rushing Blood in Bizarre New Study on September 11, 2017 at 6:39 am
Their “fluidic nanogenerator fiber,” or FFNG for short, is made out of an incredibly thin — under a millimeter thick — nanotube of carbon, which is flexible and stretchable. When this fiber is immersed in a tube surrounded by flowing blood (or ... […]
- Scientists Built a Power Generator for Use Inside the Human Body on September 10, 2017 at 8:00 am
How could you shrink this down to the nanoscale? Researchers scrapped that idea, and instead designed and built what they call a fiber-shaped fluidic nanogenerator (FFNG). This is a fiber that is less than a millimeter thick. When submerged in a saline ... […]
- A Michigan State engineer wants to power up every step you take: BTN LiveBIG on September 10, 2017 at 7:50 am
Do you know what a ferroelectret nanogenerator (FENG) is? Probably not, but that’s OK, neither did we before we met Dr. Nelson Sepúlveda, associate professor of Electrical and Computer Engineering at Michigan State University. The FENG device ... […]
- Fiber-Shaped Fluidic Nanogenerator Will Generate Electricity From Your Bloodstream on September 9, 2017 at 11:31 pm
Your body produces its own electricity in the form of nerve signals and your bloodstream travels at a very fast pace inside it. But the human body itself has never been used to generate electricity — a Chinese research team has developed lightweight ... […]
- A one-dimensional fluidic nanogenerator to draw electricity from the bloodstream on September 8, 2017 at 5:21 am
People build dams and huge turbines to turn the energy of waterfalls and tides into electricity. To produce hydropower on a much smaller scale, Chinese scientists have now developed a lightweight power generator based on carbon nanotube fibers suitable to ... […]
- Drawing electricity from the bloodstream with a nanogenerator on September 8, 2017 at 4:03 am
(Nanowerk News) Men build dams and huge turbines to turn the energy of waterfalls and tides into electricity. To produce hydropower on a much smaller scale, Chinese scientists have now developed a lightweight power generator based on carbon nanotube fibers ... […]
via Google News and Bing News