In the latest twist on optical knots, physicists have discovered a new method to create extended and knotted optical traps in 3-D. This method may one day help enable fusion energy as a practical ...

Since it is essential to design an aircraft engine nozzle to achieve IR signature suppression, an S-shaped nozzle (double serpentine nozzle) is applied so that the high temperature part of the engine ...

Optical traps can be used to confine and manipulate small objects—ranging in size from a few nanometers to several hundred micrometers—in 3-D. They work because variations in the intensity of the ...