At Lawrence Berkley National Laboratory, researchers have been working on a generator that uses genetically engineered viruses (GEV) to produce electricity.
The M13 virus has been used in the past to build batteries. Because of its piezoelectric and rapid replicative properties, it is ideal.
Scientists add an electrode to the virus . Once the slightest bit of pressure is added (the touch of a finger) the energy conducted can power an LCD screen.
Through further genetic engineering, the researchers were able to amplify the energy output; however the production level is still estimated as a quarter of a AAA battery.
GEVs are bio-medically modified viruses that require viruses to be physically inserted into DNA.
GEVs are used to create lithium batteries.
Some researchers are attempting to link GEVs to a therapeutic way to cure disease in human cells and cancer.
Dr. Angela Blecher and Dr. Paula Hammond of MIT have been working with M13 as a template using nanocomposites and carbon nanotubes to increase solar power efficiency. MIT scientists are expanding on current research to uncover the use of GEVs and their impact on electricity.
Their findings were published in the journal Nature Nanotechnology .
Harvested solar light can be converted into electricity.
The GEVs are utilized by enhancing the semi-conductive properties of the nanotubes and ultimately their output within the solar panels.
As discovered by graduate students Xiangnan Dang and Hyunjung Yi, the GEV called M13, which is aggressive toward bacteria, can be manipulated by their arrangement to strengthen the nanotube’s surface. The GEVs separate the nanotubes so that they do not short circuit by interacting with one another.
GEVs help scientists “switch” on the electricity conducted because they change the acidity of their environment; as well as make the nanotubes water soluble so that the tubes can be incorporated into the solar cells in a water based process that works at room temperature.
Professor of chemistry and biochemistry at Notre Dame University, Prashant Kamat, is very impressed with the MIT researcher’s methods. “It is likely that the virus template assembly has enabled the researchers to establish a better contact between the TiO2 nanoparticles and carbon nanotubes. Such close contact with TiO2 nanoparticles is essential to drive away the photo-generated electrons quickly and transport it efficiently to the collecting electrode surface.”
The commercial aspect of this research opens doors to a viable consumer product; amplified battery power, efficiency of manufacturing plants through the enhancement of solar panels and production facilities.
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