A new nanofilm will transform the heat of working devices into electricity

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<pre>A new nanofilm will transform the heat of working devices into electricity

Leaking of heat from running electronics is a serious problem. Scientists at the University of California at Berkeley have developed a film that, after applying to operating devices and mechanisms, will capture and utilize waste heat.

Many current systems of this type operate on a thermoelectric principle, generating electricity due to the temperature difference between the two sides of the material. This is good when it comes to devices such as JikoPower, accumulating heat from the heated kitchen inventory and turning it into electricity for charging mobile phones. However, JikoPower is not effective at lower temperature differences.

A team from Berkeley aims to create a device using poor quality waste heat with a temperature below 100 ° C. The film created by them operates on the principle of pyroelectric energy conversion at significantly lower temperatures, which makes it possible to effectively use it in electronic devices.

Scientists have created prototypes of devices that create thermal and electric fields, with which films of 50 to 100 nanometers thick interacted. During the experiments it was possible to achieve an energy density of 1.06 J / cu. cm, power density of 526 W / cu. cm and Carnot efficiency (when the thermodynamic system performs mechanical work due to heat exchange) – 19%.

According to scientists, all this indicates the promise of the new technology.

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