How to drive environmental sensors in a distributed network

Consider how to drive environmental sensors in a distributed network? We want this kind of network in order to connect our entire physical world to the Internet of Things. The answer is obvious: that is solar power . Most of these sensors are actually too small to enter many temperature gradients, and stable vibrations are not always available. The battery life is limited, and the volume is increased, and the cost is high.

This is one of the reasons why organic polymer-based solar cells are so interesting, especially the newly developed ones: they are polymer-based (ie plastic) solar cells, which are thinner than spider silk, bend Crumpling can still produce electricity.

(c) When making a retractable solar cell, the ultra-thin solar cell must be attached to a pre-stretched elastic plastic.

The developers are researchers from the University of Tokyo in Australia and Japan. Their paper was published in the journal Nature on April 3, entitled "Ultrathin and lightweight organic solar cells" with high flexibility), the abstract of the paper describes their development:

"Compared to solar cells of any other technology today, these ultra-thin organic solar cells are more than ten times thinner and are lighter and more flexible."

This kind of solar plastic can only convert 4.2% of the solar energy into electrical energy. From the traditional polysilicon solar cell standard, this is very low, but it is absolutely magical. You can consider how thin this material is and its use. widely.

This solar cell film can be used in electronic products, robots, or to develop artificial skin.

For example, Tsuyoshi Sekitani of the University of Tokyo is a researcher of this project. He told AFP reporters that this material can be worn on clothes like a badge to drive individuals Health monitor. So why not put the film under the protective screen and put it on the back of the small device? In this way, it is easy to extend their battery life, just place them in a sunny place.

When used in the Internet of Things, micro sensors only need a small amount of energy, which is what organic solar cells can provide. Factors such as price and size will determine whether they can become ubiquitous. This result shows that this is only a matter of time. Organic solar cells will meet these two requirements.

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