Optical waveguides have the potential to trap, sense and then release particles within lab-on-a-chip devices, but how can you predict whether such a system will work in practice? To provide a starting ...

Microscope image of the laser written waveguide array (left) fabricated in glass by researchers at Penn State to have a geometry that leads to the topological protection of light. Laser light ...

The vast universe can always arise people's infinite imagination and yearning. Black hole, as one of the most attractive heavenly bodies in the universe, are waiting to be explored and studied.

Sensors that use light to trap, analyse and then release tiny objects such as bacteria or DNA are one step closer thanks to new computer simulations done by researchers in the US. The team modelled ...