The United States Develops "Dynamic Felt" As An Inner Cushion For Heating And Charging.

Researchers at Wake Forest University have developed a thermoelectric device called "dynamic felt", which can convert human body heat to electric current by touching it, so that the cell phone battery will soon have enough power to make the next call.

The research results are published in the Journal of nanoexpress.

Researchers at the University's Center for nanotechnology and molecular materials said that this device locks tiny carbon nanotubes into flexible plastic optical fibers and feels like fabrics.

The technology uses the difference in temperature to generate electricity to charge, such as room temperature and body temperature.

The "dynamic felt" can be placed on the car seat to ensure the power demand of the battery. It can also collect heat under the insulated pipe or roof tiles to reduce the gas or electricity charges, or as a microelectronic charging device in clothing or wrap around the injured position of the vein to better meet the medical needs of the patient.

Researcher

We waste a lot of energy in the form of heat, but we can recapture these energy sources, such as "recapture" the energy wasted by cars to increase fuel mileage and increase power to radio, air conditioning or navigation systems.

Generally speaking, thermoelectricity is an underdeveloped energy capture technology, but there is still much room for development.

David Carol, director of the center, said, "imagine that the" felt felt "is wrapped around the flashlight as an emergency accessory and can be recharged to the mobile phone to listen to the weather forecast.

The device can be used to deal with emergency situations such as power cuts or accidents. "

Researchers say that the cost of thermal power does not make it more widely used in mass consumer products.

The standard thermoelectric device uses more than one kind of bismuth telluride.

Related products, such as mobile refrigerators and CPU radiators, efficiently convert heat into electricity, but it costs $1000 per kilogram.

If you add the "dynamic felt" to the phone cover one day, the cost may be only $1.

At present, the

The stacked 72 tube layers can generate about 140 NW power.

The team is evaluating several more ways to add carbon nanotubes to improve output power even in a thinner condition.

Hewett said: "although there is more work to be done before the" power felt "is ready to enter the market, it has been envisaged that it can serve as a thermoelectric liner for the warm coat, and it can keep people warm and cold when the outside is very cold.

If the power felt is sufficiently efficient, it can also provide electricity for iPod, and its endurance will never be disappointing.

This is definitely just around the corner. "