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Bugs are inspiring improvements to solar cells to be ant-reflective and water-repellent.
When moths encounter light, these orderly arrays of protrusions interfere with its transmission and reflection, rendering the light all but invisible. Biologists believe this trait evolved in moths, which are often nocturnal, because it prevents their eyes from reflecting moon or starlight, which would make them easier targets for predators.
Cicada wings are amazingly effective at rapidly shedding water and dirt, apparently because the insects often need to fly in humid environments, Jiang said. At the particle level, the wings have a structure very similar to that of the moth eyes â€” except that rather than deflecting light, tiny pockets of air around each nipple-like protrusion buoy water droplets.â€
Replicating the characteristics of these two insects would add beneficial properties to solar cells. The anti-reflective coating would allow more light to enter the cell â€” current coatings reflect about 10%. Jiangâ€™s technique would only reflect 2%. The water-repelling element would be useful for keeping the cells clean and free of dirt and dust.
A new source of energy may be easier to create than ever before thanks to research done at Penn State University recently.
The prospect for the wide spread use of hydrogen as a portable energy carrier is dependent on finding a clean, renewable method of production. At Penn State University, a research group headed by professor of electrical engineering Craig Grimes in the Materials Research Institute is â€œonly a couple of problems awayâ€ from developing an inexpensive and easily scalable technique for water photoelectrolysis – the splitting of water into hydrogen and oxygen using light energy â€“ that could help power the proposed hydrogen economy.
Keetsa Mattress Store – Keetsa! Blog – Eco-Friendly and Green News Â» Blog Archive Â» A great solar powered charger
This device is the ultimate in solar power survival tools, there are some great features which make this useful, no doubt there will be something that is forgotten, but a ten in one device has be good, especially with no external power needed.
Unfortunately there are not many details that explain how long the charge works for on the different devices, but never the less it has be a great thing to have around as you never know whatâ€™s going to happen.
Priced at $28
AM/FM/Weather Band Radio
Solar Power Recharging
Dynamo Power Charging
Cell Phone Recharging
LED Emergency Lamp
Siren with Blinking Red Light
Built-In Recharging Batteries
Whatâ€™s in the Box? Flashlight, Instruction Page, Bi-Directional Plug Cable, 5 Cell Charger Plugs
Whether you’re curious about ethanol, natural gas, propane, hydrogen, biodiesel, electricity, methanol, or p-series fuel, the U.S. Department of Energy has the facts.
The site provides an in depth analysis of each of these alternative fuels along with vehicle and pricing information.
Using these alternative fuels in vehicles can generally reduce harmful pollutants and exhaust emissions. In addition, most of these fuels can be domestically produced and derived from renewable sources.
Overcoming Silicon Shortage – Jetpacked
The solar industry has been seasonally faced with the shortage of silicon supply. One option the industry has turned to is to reclaim silicon materials sourced primarily from the semiconductor industry. It is faced with a growing demand for silicon material that is mainly required to produce photovoltaic cells for solar panels.
Solar cell manufacturers expect to serve as much as 30 percent to 90 percent of the energy they would have needed if they used a new silicon material source depending on how they process a batch of reclaimed wafers. The estimated energy savings will also result to the overall reduction of the carbon footprint both for semiconductors and solar industries.