How did you and Professor Fisher develop a technique to grow individual carbon nanotubes vertically on top of a silicon wafer

Growing nanotubes vertically allows us to stack more transistor circuits and other components in a computer chip, while keeping the same footprint as a conventional chip. This would be the electronic equivalent of a skyscraper.

We grow individual nanotubes vertically out of tiny cavities on top of a silicon wafer. This "vertically oriented" technique of growing carbon nanotubes on top of a silicon wafer might be an important step towards new kinds of computer chips with nanoelectronic devices, including wireless equipment and sensors.

Growing carbon nanotubes vertically on a silicon wafer may be a new way of constructing future microchips that are much faster to make and more energy efficient than conventional chips. Stacking the components on top of each other also cuts the distance and the time an electrical

Students Vijay Rawat and David Ewoldt and Professor Sands are using a special laser machine to deposit different types of multilayered nitride films with thickness precision at the nanoscale. The team plans to use the nitride films for thermoelectric applications. (Photo credit: Birck Nanotechnology Center, Discovery Park, Purdue University)

signal needs to travel in a microchip. But more research work needs to be conducted using this technique.

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