AFM University Introduction to Atomic Force Microscopy by Paul West « Cover « Foreward « Chapter 1  « Chapter 2  « Chapter 3  « Chapter 4  « Chapter 5   5.1 Process 5.1.1 Leveling 5.1.2 Histogram Adjust 5.1.3 Filtering 5.1.4 Scale / Zoom / Rotation 5.1.5 Error Correction 5.2 Display 5.2.1 2-D / 3-D 5.2.2 Pallets 5.2.3 Light Shading 5.2.4 Contrast / Brightness 5.3 Analysis 5.3.1 Line Profile 5.3.2 Line / Area Roughness 5.3.3 Height Analysis 5.3.4 Particle Analysis 5.3.5 Grains Analysis 5.3.6 Technical Samples  « Chapter 6  « Chapter 7 « Appendix A « Appendix B « Appendix C « Appendix D About Downloads Home Chapter 5 next » index « back 5.2.1 2-D / 3-D Images may be displayed by a computer as either 2-dimensional or 3-dimensional projections (see Figure 5-4). The two dimensional image shows the x and y axis and color is used to depict height. An AFM image displayed in the 2-D format looks much like an image from a traditional microscope such as an optical microscope. An image displayed in a 3-D format gives a rendition of what the surface topography actually looks like. That is, data is displayed in the x y and z axis. Often the scale between the xy and z axes are not equal. The surface features are very small with relationship to the x and y dimensions; however, in the 3-d image they look large. FIGURE 5-4 3-D presentation (Left) and 2-D presentation (Right) of an AFM image of DVD bits. The same data was used for both of these images. 5.2.2 Pallets The color pallet used to display an AFM image can be selected to make the image seem more visually compelling. In some cases, selecting a specialized color pallet can help with visualizing certain aspects of an image. However, in general, the color pallet that is used for displaying an AFM image is very subjective. next » « back   102