“…Wolfelschneider et al, showed that the cantilevers, typically 1 mm long, could be driven into vibration by as little as 22 microwatts of modulated optical power, aimed at the optimal site about 50 microns along from the cantilever base. 30 Multimode fibres were used to bring the activating and the detecting optical beams to the sensor head, with the detecting fibre collecting light reflected back by a large paddle at the cantilever's free end. Incoherent detection was found to be possible, allowing LEDs to be used for both sources if desired; the quality factors of the vibrations were reasonably high, at around 50, and the system obviously has the potential to become an optical microresonator sensor.…”