Dynamics of a piezoelectric tuning fork/optical fiber assembly in a near-field scanning optical microscope

Shelimov, Konstantin B.; Davydov, D. N.; Moskovits, Martin

doi:10.1063/1.1150220

Cited by 23 publications

(12 citation statements)

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“…The high-resolution imaging of SNOM is achieved when the probe-sample separation is precisely controlled in the near-field regime. Therefore, various distance regulation schemes have been proposed, such as electron tunneling [ 2 ], frustrated total internal reflection [ 13 ], background fluorescence increases [ 14 ], and the shear-force control schemes [ 15 , 16 ], which are now widely used owing to their simplicity, compactness, reduced drift in the feedback loop, and lower levels of the parasitic optical background [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…In previous studies, researchers adopted the single degree of freedom vibration theory or the Euler–Bernoulli beam theory to analyze the dynamic behavior of the TF-probe [ 17 , 22 , 23 ], and concluded that the shear force mechanism was induced by the lateral interaction between the probe and the sample. Meanwhile, various experiments have also been implemented to investigate the shear force mechanism of the TF-probe.…”

Section: Introductionmentioning

confidence: 99%

“…This finding has led to further in-depth research. Shelimov et al [ 17 ] studied the factors leading to a decrease in the resonance quality of TF-probe using a simple elasto-mechanical analysis method. Recently, based on the non-linear tension-bending coupled vibration theory, we established dynamic equations of the shear force system when the TF prong and the attached fiber probe were all elastic deformable structures [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

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Research on the Sensing Performance of the Tuning Fork-Probe as a Micro Interaction Sensor

Gao

2015

Sensors

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The shear force position system has been widely used in scanning near-field optical microscopy (SNOM) and recently extended into the force sensing area. The dynamic properties of a tuning fork (TF), the core component of this system, directly determine the sensing performance of the shear positioning system. Here, we combine experimental results and finite element method (FEM) analysis to investigate the dynamic behavior of the TF probe assembled structure (TF-probe). Results from experiments under varying atmospheric pressures illustrate that the oscillation amplitude of the TF-probe is linearly related to the quality factor, suggesting that decreasing the pressure will dramatically increase the quality factor. The results from FEM analysis reveal the influences of various parameters on the resonant performance of the TF-probe. We compared numerical results of the frequency spectrum with the experimental data collected by our recently developed laser Doppler vibrometer system. Then, we investigated the parameters affecting spatial resolution of the SNOM and the dynamic response of the TF-probe under longitudinal and transverse interactions. It is found that the interactions in transverse direction is much more sensitive than that in the longitudinal direction. Finally, the TF-probe was used to measure the friction coefficient of a silica–silica interface.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Research on the Sensing Performance of the Tuning Fork-Probe as a Micro Interaction Sensor

Gao

2015

Sensors

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“…Compared with the optical detection method, tuning fork probe–sample distance regulation has a number of advantages, including simplicity, compactness and lack of parasitic optical background. However, the preparation of a tuning fork – fibre tip assembly with reproducible characteristics is not an easy task (Shelimov et al ., 2000). Here we propose an alternative, a tapping‐mode force sensing method based on the use of a piezoelectric bimorph cantilever (Shang et al ., 2001).…”

Section: Introductionmentioning

confidence: 99%

Non‐optical bimorph‐based tapping‐mode force sensing method for scanning near‐field optical microscopy

Shang

Lei

Troyon

et al. 2004

Journal of Microscopy

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SummaryA non-optical bimorph-based tapping-mode force sensing method for tip-sample distance control in scanning near-field optical microscopy is developed. Tapping-mode force sensing is accomplished by use of a suitable piezoelectric bimorph cantilever, attaching an optical fibre tip to the extremity of the cantilever free end and fixing the guiding portion of the fibre to a stationary part near the tip to decouple it from the cantilever. This method is mainly characterized by the use of a bimorph, which carries out simultaneous excitation and detection of mechanical vibration at its resonance frequency owing to piezoelectric and anti-piezoelectric effects, resulting in simplicity, compactness, ease of implementation and lack of parasitic optical background. In conjugation with a commercially available SPM controller, tapping-mode images of various samples, such as gratings, human breast adenocarcinoma cells, red blood cells and a close-packed layer of 220-nm polystyrene spheres, have been obtained. Furthermore, topographic and near-field optical images of a layer of polystyrene spheres have also been taken simultaneously. The results suggest that the tapping-mode setup described here is reliable and sensitive, and shows promise for biological applications.

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“…G; ";öB ê2ö «Ò~º ~ Þ 7çº TM ãÖ ;~&. ò R" ö Ò~ ÒBÚöº >; êÿ ¶¢ Ï shear force feedback O» [11][12][13] 'Ï>î. ö B ÒÏB ò~ Nº 2 µm Ú ¢>' NSOMG; …”

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Characterization of optical waveguides with near - field scanning optical microscope

2002

Korean Journal of Optics and Photonics

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Dynamics of a piezoelectric tuning fork/optical fiber assembly in a near-field scanning optical microscope

Cited by 23 publications

References 14 publications

Research on the Sensing Performance of the Tuning Fork-Probe as a Micro Interaction Sensor

Research on the Sensing Performance of the Tuning Fork-Probe as a Micro Interaction Sensor

Non‐optical bimorph‐based tapping‐mode force sensing method for scanning near‐field optical microscopy

Characterization of optical waveguides with near - field scanning optical microscope

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