Tuesday, March 2, 2010

Powerful Yarn.

Threads that have been studied can collect energy from the friction or low frequency vibration. This yarn can be woven into cloth, that can gather energy from the movement of the body such as walking a well function as a provider of energy. Yarn is a very practical, which is made by a master material named Zhong L Wang and his team at Georgia Tech, made of Kevlar fiber flexible wire coated with zinc oxide (ZnO) nano-sized. Wang and his team establish these two types of fiber that resembles a mini brush and then tested with the subject of friction.

Since ZnO is a semiconductor and piezoelectric properties the fabric is able to generate voltage in response to mechanical stress. Here the energy of friction converted into electrical energy.

Nano technology expert Charles M Lieber of Harvard University, praised the results of these findings are able to maintain flexibility of Kevlar fiber, although it has been infiltrated with a crystalline ZnO. The key is to surround the fiber with a thin layer of ZnO crystals serve as seeds that will berkuran nano wires can be grown from these seeds, Wang explained. The thinner the layer of the seed crystal is the more flexible fibers can be produced. She stressed if the procedure is not expensive and can easily be made large scale.

To generate electricity, making the research team with two fibers wrapped ZnO nano wires, one of which has been coated with gold. With attractive braided fiber using a tool such encumbered spring mini-sized, it will make the two wires rubbing against each other on the surfaces in contact that generate millions of microscopic fibers. Special connection between the gold metal with ZnO semiconductor allows current to flow only towards one direction, so that all the collected currents will add constructively to each other even if the fabric is deflected into different directions.

An optical micrograph showing the two threads woven nano-sized ZnO, one of which has been coated with gold.

But if only to rub two threads will not be enough to produce useful electrical energy, according to Wang. So now he's hoping to be able to find an efficient way to establish these threads that will be able to maximize the energy can be generated.

Threads that have been studied can collect energy from the friction or low frequency vibration. This yarn can be woven into cloth, that can gather energy from the movement of the body such as walking a well function as a provider of energy. Yarn is a very practical, which is made by a master material named Zhong L Wang and his team at Georgia Tech, made of Kevlar fiber flexible wire coated with zinc oxide (ZnO) nano-sized. Wang and his team establish these two types of fiber that resembles a mini brush and then tested with the subject of friction.

Since ZnO is a semiconductor and piezoelectric properties the fabric is able to generate voltage in response to mechanical stress. Here the energy of friction converted into electrical energy.

Nano technology expert Charles M Lieber of Harvard University, praised the results of these findings are able to maintain flexibility of Kevlar fiber, although it has been infiltrated with a crystalline ZnO. The key is to surround the fiber with a thin layer of ZnO crystals serve as seeds that will berkuran nano wires can be grown from these seeds, Wang explained. The thinner the layer of the seed crystal is the more flexible fibers can be produced. She stressed if the procedure is not expensive and can easily be made large scale.

To generate electricity, making the research team with two fibers wrapped ZnO nano wires, one of which has been coated with gold. With attractive braided fiber using a tool such encumbered spring mini-sized, it will make the two wires rubbing against each other on the surfaces in contact that generate millions of microscopic fibers. Special connection between the gold metal with ZnO semiconductor allows current to flow only towards one direction, so that all the collected currents will add constructively to each other even if the fabric is deflected into different directions.

An optical micrograph showing the two threads woven nano-sized ZnO, one of which has been coated with gold.

But if only to rub two threads will not be enough to produce useful electrical energy, according to Wang. So now he's hoping to be able to find an efficient way to establish these threads that will be able to maximize the energy can be generated.

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