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The study of how the properties of matter arise from its structure at all scales and of how processing can be used to modify those properties (often in pursuit of a specific application).

2 votes
2 answers
150 views

Materials that change opacity under stress/strain?

I'm looking for a material that changes optical properties in response to changes in stress or density. The idea is to make a solid motor coupling to measure torque using photo emitter and detector mo …
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2 votes
3 answers
2k views

Materials with directional friction property?

At the macroscopic level a simple metal file or rasp creates a large amount of friction in one direction and a much smaller amount in the opposit direction. Shark skin displays the same properties due …
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0 votes

Can we measure speed of light in a non-transparent material

What you and I view as transparent or opaque are only that way in relation to photons in the visible spectrum (electromagnetic wavelengths between 390 and 700 nm) - this is because electrons in the ma …
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