To burn or write in the air, the pen emits high-intensity laser pulses to create ionized gas or plasma. In turn, this emits energy in the form of light. The pulses are brief, just femtoseconds, and ...
Last month, Japanese scientists published a paper touting a touchable, plasma hologram. It’s pretty cute: Researchers in the Digital Nature Group, led by Yoichi Ochiai of the University of Tsukuba, ...
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