Dynamics of the nanoneedle probe in trolling mode AFM

Ahmad Abdi; Hossein Nejat Pishkenari; Ramtin Keramati; Majid Minary-Jolandan

doi:10.1088/0957-4484/26/20/205702

Dynamics of the nanoneedle probe in trolling mode AFM

Ahmad Abdi, Hossein Nejat Pishkenari, Ramtin Keramati, Majid Minary-Jolandan

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Atomic force microscopy (AFM), as an indispensable tool for nanoscale characterization, presents major drawbacks for operation in a liquid environment arising from the large hydrodynamic drag on the vibrating cantilever. The newly introduced 'Trolling mode' (TR-mode) AFM resolves this complication by using a specialized nanoneedle cantilever that keeps the cantilever outside of the liquid. Herein, a mechanical model with a lumped mass was developed to capture the dynamics of such a cantilever with a nanoneedle tip. This new developed model was applied to investigate the effects of the needle-liquid interface on the performance of the AFM, including the imaging capability in liquid.

Original language	English (US)
Article number	205702
Journal	Nanotechnology
Volume	26
Issue number	20
DOIs	https://doi.org/10.1088/0957-4484/26/20/205702
State	Published - May 22 2015
Externally published	Yes

Keywords

dynamic AFM
hydrodynamic dissipation
lumped mass model
meniscus
quality factor

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0957-4484/26/20/205702

Cite this

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title = "Dynamics of the nanoneedle probe in trolling mode AFM",

abstract = "Atomic force microscopy (AFM), as an indispensable tool for nanoscale characterization, presents major drawbacks for operation in a liquid environment arising from the large hydrodynamic drag on the vibrating cantilever. The newly introduced 'Trolling mode' (TR-mode) AFM resolves this complication by using a specialized nanoneedle cantilever that keeps the cantilever outside of the liquid. Herein, a mechanical model with a lumped mass was developed to capture the dynamics of such a cantilever with a nanoneedle tip. This new developed model was applied to investigate the effects of the needle-liquid interface on the performance of the AFM, including the imaging capability in liquid.",

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AU - Abdi, Ahmad

AU - Pishkenari, Hossein Nejat

AU - Keramati, Ramtin

AU - Minary-Jolandan, Majid

PY - 2015/5/22

Y1 - 2015/5/22

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AB - Atomic force microscopy (AFM), as an indispensable tool for nanoscale characterization, presents major drawbacks for operation in a liquid environment arising from the large hydrodynamic drag on the vibrating cantilever. The newly introduced 'Trolling mode' (TR-mode) AFM resolves this complication by using a specialized nanoneedle cantilever that keeps the cantilever outside of the liquid. Herein, a mechanical model with a lumped mass was developed to capture the dynamics of such a cantilever with a nanoneedle tip. This new developed model was applied to investigate the effects of the needle-liquid interface on the performance of the AFM, including the imaging capability in liquid.

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KW - hydrodynamic dissipation

KW - lumped mass model

KW - meniscus

KW - quality factor

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Dynamics of the nanoneedle probe in trolling mode AFM

Abstract

Keywords

ASJC Scopus subject areas

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