Analysis of Shape-memory Polymers with High Elastic Energy Storage Capacity

Ebna Zabir

Department of Mechanical Engineering

University of Rochester

Light Microscopy

Light microscope image is taken via the Buehler micro-hardness indenter with 10X objective lens. Figure 1.0 below is generated immediately after the micro-indentation. A Vickers hardness test was performed on the sample with a load of 10g for 30 seconds. The diamond shape indentation provides a hardness value of the material.

Figure 1.0: Light microscope image of a micro indentation on the surface of the sample.

Atomic Force Microscopy

A NT-MDT NEXT atomic force microscope is used to generate a surface scan of an 85 by 85 micron area with the indentation in the middle. Figures 1.1, 1.2, and 1.3 below illustrates the indentation made by the Buehler micro-hardness machine. This image provides an excellent understanding of the depth (Z height) of the indentation. A section analysis of the indentation is shown in Figure 1.4, this particular feature calculates profiles from the image in certain orientations. Additionally, a 3D roughness view of the sample in a plane area is shown in Figure 1.5.

Figure 1.1: A top 3D iso-view of the indentation from the atomic force microscope.

 

Figure 1.2: A side 3D iso-view of the indentation from the atomic force microscope.

 

Figure 1.3: A 2D top view of the indentation from the atomic force microscope.

 

Figure 1.4: A section analysis of the indentation. This particular analysis illustrates the height profile of the indentation.

 

Figure 1.5: A 3D plane area surface roughness view from the AFM.

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