• Direct Sensing in Liquids Using Whispering-Gallery-Mode Droplet Resonators 

      Avino, Saverio; Krause, Anika; Zullo, Rosa; Giorgini, Antonio; Malara, Pietro; De Natale, Paolo; Loock, Hans-Peter; Gagliardi, Gianluca (2016-03-03)
      Liquid droplets suspended by the tip of a thin wire, a glass capillary, or a needle form high-Q optical resonators, thanks to surface tension. Under gravity equilibrium conditions, the maximum drop diameter is approximately ...