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| + | [* black] So, what has changed? First, the dome switch cover membrane (Note- I would be happy if we swapped out the 2nd graph image with the picture of the CP instructor working on the device) |
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| + | [* black] In the 2018 model, the cover membrane is semi-opaque and tackier. It feels like silicone when you rub it. The new model uses a clear membrane that is crinkly and smooth to the touch. |
| + | [* black] To confirm that the materials are different, we analyzed them using Fourier Transform Infrared Spectroscopy (FTIR). Shoutout and thanks to whoever helped us! |
| + | [* black] FTIR spectroscopy works by shining light at a material and measuring how much light is absorbed and at what wavelengths. This data acts as a fingerprint for the material, allowing for identification |
| + | [* black] The spectrographs (is this the right word??) for the two membranes show that they ''are'' different to each other! |
| + | [* black] By comparing the spectrographs to known materials, we are guessing that the 2018 model uses _______ while the 2019 model uses ________ |
| + | [* black] What does that mean? Insert analysis here. |
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