Enhancement of shear-force sensitivity using asymmetric response of tuning forks for near-field scanning optical microscopy

Jang Hoon Yoo, Jae Hoon Lee, Sang Youp Yim, Seung Han Park, Myong Do Ro, Joo Ho Kim, In Sik Park, Kyuman Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Resonance characteristics of a tuning fork are investigated to enhance the shear-force detection sensitivity for near-field scanning optical microscopy. In particular, we show that the asymmetric frequency response of a tuning fork can be utilized to increase quality factors and suppress the background feedback signal. The pinning down effect on one side of the main peak can readily elevate vertical sensitivity and stability. A simplified model based on a coupled harmonic oscillator is presented to describe the asymmetric resonance behavior of the tuning fork. We also show improved topographic images of a blue-ray disc and optical images of a chromium pattern on the quartz using the asymmetric resonance.

Original languageEnglish
Pages (from-to)4467-4475
Number of pages9
JournalOptics Express
Volume12
Issue number19
DOIs
Publication statusPublished - 2004 Jan 1

Fingerprint

forks
near fields
tuning
shear
microscopy
scanning
augmentation
harmonic oscillators
frequency response
Q factors
chromium
rays
quartz
sensitivity

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Yoo, Jang Hoon ; Lee, Jae Hoon ; Yim, Sang Youp ; Park, Seung Han ; Ro, Myong Do ; Kim, Joo Ho ; Park, In Sik ; Cho, Kyuman. / Enhancement of shear-force sensitivity using asymmetric response of tuning forks for near-field scanning optical microscopy. In: Optics Express. 2004 ; Vol. 12, No. 19. pp. 4467-4475.
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Enhancement of shear-force sensitivity using asymmetric response of tuning forks for near-field scanning optical microscopy. / Yoo, Jang Hoon; Lee, Jae Hoon; Yim, Sang Youp; Park, Seung Han; Ro, Myong Do; Kim, Joo Ho; Park, In Sik; Cho, Kyuman.

In: Optics Express, Vol. 12, No. 19, 01.01.2004, p. 4467-4475.

Research output: Contribution to journalArticle

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