Tag: plasmonics

  • Nation & World

    Needle beam stays on point

    A Harvard-led team of researchers has demonstrated a new type of light beam that propagates without spreading outward, remaining very narrow and controlled along an unprecedented distance. It could greatly reduce signal loss for on-chip optical systems and may eventually assist the development of a more powerful class of microprocessors.

    3 minutes
  • Nation & World

    Perfecting optics

    Applied physicists at the Harvard School of Engineering and Applied Sciences (SEAS) have created an ultrathin, flat lens that focuses light without imparting the distortions of conventional lenses.

    3 minutes
  • Nation & World

    Nanoparticles shine with customizable color

    Engineers at Harvard have demonstrated a new kind of tunable color filter that uses optical nanoantennas to obtain precise control of color output. The advance has the potential for application in televisions and biological imaging, and could even be used to create invisible security tags to mark currency.

    4 minutes