On-chip interferometric detection of nanomechanical motion.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 20131919.
- Also identified by DOI 10.1021/nl903556s.
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Abstract
An integrable on-chip displacement transduction of nanomechenical motion is developed that senses the modulation of the optical near-field of an illuminated vibrating string with a nearby Schottky photodiode. This scheme poses no restrictions on resonator material and avoids additional damping. The achieved sensitivity of 1 pm/Hz(1/2) enables the detection of Brownian motion of our mechanical resonators at room temperature. Implementing a feedback scheme of the detected signal into the electrical actuation, we demonstrate self-oscillation.
Medical subject headings
- Interferometry
- Lighting
- Micro-Electrical-Mechanical Systems
- Photometry
- Semiconductors
- Transducers