Sharply-tuned nanostrings work at room temperature

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Typical nanostrings made from electrospun masks on stressed silicon nitride film will not be perfectly parallel but the process allows rapid low-cost manufacture. The string in the foreground 200 nm wide 105 nm thick and 60 microns long had the highe ...
Typical nanostrings made from electrospun masks on stressed silicon nitride film will not be perfectly parallel, but the process allows rapid, low-cost manufacture. The string in the foreground, 200 nm wide, 105 nm thick and 60 microns long, had the highest quality factor of any in the current experiment. Cornell researchers believe it is the highest Q achieved for strings this small operating at room temperature. Craighead Lab/Cornell University

Using a fast, low-cost fabrication technique that allows inexpensive testing of a wide variety of materials, Cornell researchers have come up with nanoscale resonators -- tiny vibrating strings -- with the highest quality factor so far obtainable at room temperature for devices so small.


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