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October 30th, 2006

Nanosprings in action

The creation of well controlled carpets of vertically aligned and uniformly coiled carbon nanotubes by Dr. Wei Wang (then a graduate student at Clemson University) supervised by Prof. Apparao Rao might now extend new horizons for applications in the nanoworld. They were able to grow very uniform foam-like forests of coiled carbon nanotubes in a thermal CVD reactor with controlled thickness and uniform coils diameter (~20 nm) and coiling pitch (∼500 nm). This relatively defect free structures showed the potential for developing active nanospring devices, as well as protective coatings, when used in their as grown dense foam-like form.


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