AFM University Introduction to Atomic Force Microscopy by Paul West

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7.1 Physical Science
7.1.1 Polymer Composites
7.1.2 Phase Transitions
7.1.3 Surface Texture
7.1.4 Defects
7.1.5 Crack / Scratch Propagation
7.1.6 Coatings
7.1.7 Nanoparticles
7.1.8 Carbon Nanotubes
7.1.9 Crystal Structure
7.2 Life Sciences
7.2.1 Cells
7.2.2 Bio-Molecules
7.3 High Technology
7.3.1 Semiconductor
7.3.2 Data Storage
7.3.3 Advanced Optical
7.4 Industrial
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Chapter 7


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7.1.7 Nanoparticles
The AFM can easily visualize nanoparticles with sizes ranging from a few nanometers to a few microns. It is possible to measure the size of individual nanoparticles as well as measure the parameter distribution of an ensemble of nanoparticles. Parameters such as particle size, volume, circumference and surface area are readily measured. One of the greatest challenges to measuring nanoparticles is developing methods for distributing the nanoparticles on a surface.
FIGURE 7-8 AFM image of 100nm nanoparticles 2.8 u x 2.8 u.
7.1.8 Carbon Nanotubes
High resolution images of both single wall and multi-wall carbon nanotubes are measurable with the AFM. The nanotubes must be dispersed on a flat surface for imaging.
FIGURE 7-9 AFM image of single and multi-wall CNT.
7.1.9 Crystal Structure
Atomic terraces on crystal surfaces are readily measured with an AFM in ambient air. It is not possible, however, to measure the topography

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