Dielectric constant measuring apparatus, dielectric constant...

Details Dielectric constant measuring apparatus, dielectric constant... Dielectric constant measuring apparatus, dielectric constant...

2007-05-15

2007-05-15

Edun, Muhammad (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

C369S100000

Reexamination Certificate

active

10489170

ABSTRACT:
A dielectric constant measuring apparatus for measuring a dielectric constant of a dielectric substance is provided with: a cantilever having a small projection on a tip side of a cantilevered electric conductor; an electrode which is placed around the cantilever and is earthed; an inductor (L) placed so as to constitute a resonance circuit together with a capacitance (Cs) in a small area of the dielectric substance that the cantilever contacts; an oscillating device connected to the resonance circuit; a demodulating device for demodulating an oscillation frequency of the oscillating device; and a dielectric constant detecting device for detecting a dielectric constant information from a demodulation signal of the demodulating. The dielectric constant measuring apparatus can be applied to an information recording/reproducing apparatus using a dielectric record medium.

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