Existence of a Stable Resonance Zone with Nearly Unchanging Vibration Characteristics for a Near-field Scanning Optical Microscope Probe Dipped Partially into a Liquid

Existence of a Stable Resonance Zone with Nearly Unchanging Vibration Characteristics for a Near-field Scanning Optical Microscope Probe Dipped Partially into a Liquid

The vibration characteristics of a near-field scanning optical microscope (NSOM) probe, whosevibration was controlled by two-nodal-wedge method and tip was partially dipped into a liquid,were investigated theoretically and experimentally. The resonant frequency and the Q value of theNSOM probe were found to remain nearly unchanged irrespective of the dipping depth of the probe,if the probe was kept within a dipping depth range of 0.41.0 mm. With the achievement of ahigh Q value, the existence of this stable resonance zone implies that bio-samples immersed in aliquid can be accurately and stably measured using a NSOM controlled by using two-nodal-wedgemethod.

The vibration characteristics of a near-field scanning optical microscope (NSOM) probe, whosevibration was controlled by two-nodal-wedge method and tip was partially dipped into a liquid,were investigated theoretically and experimentally. The resonant frequency and the Q value of theNSOM probe were found to remain nearly unchanged irrespective of the dipping depth of the probe,if the probe was kept within a dipping depth range of 0.41.0 mm. With the achievement of ahigh Q value, the existence of this stable resonance zone implies that bio-samples immersed in aliquid can be accurately and stably measured using a NSOM controlled by using two-nodal-wedgemethod.