The object I scanned was a Polaroid. I worried that the resulting images would be repetitive, but they turned out to be surprising.
The sputter coating on polaroid surface:
Edges of layers inside polaroid: 
The silver grains coated on the film base:
At the magnitude of nanometers, the slight vibrations of the particles caused by sounds and shakes can be observed.
I was fascinated by how SEM captures the photos: it continuously captures a relatively long period. I like to think about how one single photo generated by SEM becomes a representation of a piece of music/ a conversation/ a series of actions.
Slight vibrations when a conversation was going on:
Vibrations when playing a piece of rock music:
Vibrations when knocking on the table：