Mechanically Actuated Optical Surfaces for Switchable Appearances on 3D Objects (hcie.csail.mit.edu) 2 points by stefanv 1mo ago ↗ HN
[–] stefanv 1mo ago ↗ And a video demonstration/explanation https://youtu.be/KJK-DvgmRNs?is=k5HtcI5fsvnMAIyY
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