SEM: Coffee Grounds

I brought some ground up coffee from a bag which I consume everyday to the SEM. From the Millimetre scale it looked as expected, with the structures forming cave like forms. However, when I got to the nanometer scale things became much more interesting. With the fibres of the coffee clear, and due to the heat of the electron microscope, as the image was rasterising the sample would move resulting in the wavy images below. This notion of capturing movement in a static image I was very much excited by (evident in the fact that the most part of my images were of this).

When I commented on the fact that they looked almost like hair, I was informed that the structural differences in them were very apparent, wherein human hair is almost a scalelike structure, whereas plant fibres are more regimented and neighbour to neighbour.