Side-to-side shaking of nanoresonators throws off impurities

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Schematic of the experimental setup. A laser striking the base of a cantilever (blue) can excite vibrations either in the plane or perpendicular to it depending on the frequency at which the laser is pulsed. A second laser (red) measures side-to-side ...
Schematic of the experimental setup. A laser striking the base of a cantilever (blue) can excite vibrations either in the plane or perpendicular to it, depending on the frequency at which the laser is pulsed. A second laser (red) measures side-to-side motion as the cantilever chops through it. Credit: Rob Ilic/Cornell NanoScale Facility

Tiny vibrating silicon resonators are of intense interest in nanotechnology circles for their potential ability to detect bacteria, viruses, DNA and other biological molecules.


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