The point is that we generally consider light to be good, safe, even comforting. Yet when it comes to our skin, things are a ...
The umbrella term is called photobiomodulation therapy, which covers other colors, or wavelengths, that have health benefits.
Sub-wavelength optics is the study of light on a spatial scale smaller than its wavelength. Conventionally, the minimum length scale on which a beam of light can operate is equal to half its ...
This work reports the design of an efficient multiband UC system based on Ln3+/Yb3+-doped core-shell upconversion ...