IBM researchers were able to track heat flow in carbon nanotubes

6 March 2009

Understanding the mechanism of heat flow in carbon nanotubes is one of the important task that can lead to many new applications of carbon nanotubes in future nanoelectronics devices. Researchers at IBM have recently announced that they were able to track the heat dissipation into nanotube’s atom vibration and surface vibration.

Actually any electric device get heated due to conversion of electricity into heat and in similar fashion, carbon nanotubes also got heated during the operation of the device, however so far researchers were not able to measure or track the heat flow of heat dissipation within the nanotube devices.

Researchers at IBM took a single carbon nanotube for the study and incorporated it as an active channel of the transistor. Researchers measure the change in optical properties during the flow of electric current through the nanotubes and considering these changes as the thermometers; they were able to estimate the energy of dissipation through various nodes of vibrational motion of nanotubes’s atom as well as the substrate beneath it.

During the study researcher were able to found the non thermal equilibrium between various nodes ranging from the temperature from 400C to 1000C and further they established that an efficient coupling mechanism between atomic lattice vibrations and charge carriers in carbon nanotube can significantly affect the electronic power transport or heat transport from nanotube to its substrate.

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One Response to “IBM researchers were able to track heat flow in carbon nanotubes”

  1. On March 7th, 2009 at 9:21 pm, Tom Mazanec Says:

    Quibble:
    Does a superconducting circuit generate heat? IIRC those things can go for years.

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