Near-field scanning optical microscoe with a high q-factor piezoelectric sensing elment
CA 2380149 A1 · Owner: Shelimov, Konstantin B. · Inventors: Davydov, Dmitri N.; Moskovits, Martin; Haslett, Thomas L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A perpendicular-mode near-field scanning optical microscope (NSOM) utilizing a piezoelectric micro tuning fork as its height-sensing element is described. The present invention provides a method and apparatus for modifying and attaching an optical fiber to the tuning fork that allows the assembly to retain Q-factors up to 9000, substantially higher than those described so far in the literature for tuning-fork-based instruments. The method involves reducing the diameter of the cladding of the optical fiber down to the 17-25 µm using several chemical etching steps before the fiber is attached to , the tuning fork. A sharp upturn in the Q-factor is observed when the fiber diameter …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2022.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.