scholarly journals Tapping Mode AFM Imaging for Functionalized Surfaces

10.5772/36425 ◽  
2012 ◽  
Author(s):  
Nadine Mourougou-Candoni
Keyword(s):  
Tapping Mode ◽  
Functionalized Surfaces ◽  
Afm Imaging ◽  
Tapping Mode Afm

scholarly journals Tapping Mode AFM Imaging in Liquids with blueDrive Photothermal Excitation

2018 ◽  
Vol 26 (6) ◽  
pp. 12-17 ◽  
Author(s):  
Aleksander Labuda ◽  
Sophia Hohlbauch ◽  
Marta Kocun ◽  
F. Ted Limpoco ◽  
Nathan Kirchhofer ◽  
...  
Keyword(s):  
Tapping Mode ◽  
Afm Imaging ◽  
Tapping Mode Afm ◽  
Image Position

Abstract

The effect of PeakForce tapping mode AFM imaging on the apparent shape of surface nanobubbles

2013 ◽  
Vol 25 (18) ◽  
pp. 184005 ◽  
Author(s):  
Wiktoria Walczyk ◽  
Peter M Schön ◽  
Holger Schönherr
Keyword(s):  
Tapping Mode ◽  
Afm Imaging ◽  
Tapping Mode Afm

Mechanisms of Single-Walled Carbon Nanotube Probe−Sample Multistability in Tapping Mode AFM Imaging

2005 ◽  
Vol 109 (23) ◽  
pp. 11493-11500 ◽  
Author(s):  
Santiago D. Solares ◽  
Maria J. Esplandiu ◽  
William A. Goddard ◽  
C. Patrick Collier
Keyword(s):  
Carbon Nanotube ◽  
Single Walled Carbon Nanotube ◽  
Tapping Mode ◽  
Single Walled Carbon ◽  
Afm Imaging ◽  
Tapping Mode Afm

Improvement of Tapping Mode AFM Imaging Stability by Operation Far Below Resonance Frequency of a Cantilever

2003 ◽  
Author(s):  
Tomasz Kowalewski ◽  
Justin Legleiter
Keyword(s):  
Resonance Frequency ◽  
Transient Response ◽  
Feature Tracking ◽  
Oscillation Amplitude ◽  
Scanning Speed ◽  
Quality Factors ◽  
Tapping Mode ◽  
Afm Imaging ◽  
Tapping Mode Afm ◽  
Major Factors

In tapping mode AFM, a cantilever is driven near its resonance frequency and intermittently strikes the sample while raster scanned across a surface. The oscillation amplitude is monitored via a feedback loop to extract topographical information of surfaces at the nanoscale. This paper deals with major factors limiting scanning speed: 1) the slow transient response of the cantilever, and 2) instabilities associated with systems with high quality factors (Q). Due to the slow transient response, the AFM has difficulty in instantly responding to steps along the surface, resulting in the need for slower scan rates. By driving the cantilever well below its resonance frequency, stability of the system is greatly improved, resulting in better feature tracking and the ability to scan at faster speeds.

scholarly journals Multiple regimes of operation in bimodal AFM: understanding the energy of cantilever eigenmodes

2013 ◽  
Vol 4 ◽  
pp. 385-393 ◽  
Author(s):  
Daniel Kiracofe ◽  
Arvind Raman ◽  
Dalia Yablon
Keyword(s):  
Single Frequency ◽  
Force Microscopy ◽  
Atomic Force ◽  
Afm Imaging ◽  
Multiple Regimes ◽  
Nanoscale Imaging ◽  
Relative Kinetic ◽  
Series Of Experiments ◽  
Tapping Mode Afm ◽  
Afm Cantilever

One of the key goals in atomic force microscopy (AFM) imaging is to enhance material property contrast with high resolution. Bimodal AFM, where two eigenmodes are simultaneously excited, confers significant advantages over conventional single-frequency tapping mode AFM due to its ability to provide contrast between regions with different material properties under gentle imaging conditions. Bimodal AFM traditionally uses the first two eigenmodes of the AFM cantilever. In this work, the authors explore the use of higher eigenmodes in bimodal AFM (e.g., exciting the first and fourth eigenmodes). It is found that such operation leads to interesting contrast reversals compared to traditional bimodal AFM. A series of experiments and numerical simulations shows that the primary cause of the contrast reversals is not the choice of eigenmode itself (e.g., second versus fourth), but rather the relative kinetic energy between the higher eigenmode and the first eigenmode. This leads to the identification of three distinct imaging regimes in bimodal AFM. This result, which is applicable even to traditional bimodal AFM, should allow researchers to choose cantilever and operating parameters in a more rational manner in order to optimize resolution and contrast during nanoscale imaging of materials.

scholarly journals Hydrodynamic effects of the tip movement on surface nanobubbles: a combined tapping mode, lift mode and force volume mode AFM study

Soft Matter ◽  
2014 ◽  
Vol 10 (32) ◽  
pp. 5945-5954 ◽  
Author(s):  
Wiktoria Walczyk ◽  
Nicole Hain ◽  
Holger Schönherr
Keyword(s):  
Pyrolytic Graphite ◽  
Highly Oriented Pyrolytic Graphite ◽  
Tapping Mode ◽  
Afm Imaging ◽  
Volume Mode ◽  
Force Volume ◽  
Hydrodynamic Effects ◽  
The Impact

Individual argon surface nanobubbles on highly oriented pyrolytic graphite were analysed in three different AFM imaging modes to assess the impact of the effect of different tip-sample interactions on the apparent nanobubble dimensions.

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