Device creates negative mass and a new way to generate lasers:
"Most objects react in predictable ways when force is applied to them—unless they have
“negative mass.” And then they react exactly opposite from what you would expect.
Now University of Rochester researchers have succeeded in creating particles with
negative mass in an atomically thin semiconductor, by causing it to interact with confined
light in an optical microcavity."
See:
https://www.nextbigfuture.com/2018/0...te-lasers.html