
ALT Physicists have created a new 'time crystal' — and it can actually be seen. Here's what that means. These strange materials, which repeat their structure not just in space but in time, have mostly lived in the world of theory or required complex setups to detect. But now, a team from the University of Colorado Boulder has built a time crystal made of liquid crystals, yes, the same kind found in LCD screens, that forms visible, rippling patterns that can be viewed under a microscope, and in some cases, even with the naked eye. Led by physicists Hanqing Zhao and Ivan Smalyukh, the team created the effect by sandwiching the liquid crystal between glass plates coated with a dye that responds to light. When specific types of light were shone onto the setup, the dye changed its orientation and applied pressure to the liquid crystal layer, triggering a chain reaction. This caused the molecules to form kinks that moved and interacted in repeating cycles, producing colored stripes.


























