The lateral confinement of Bloch surface waves on a patterned multilayer is investigated by means of leakage radiation microscopy (LRM). Arrays of nanometric polymeric waveguides are fabricated on a proper silicon-nitride/ silicon-oxide multilayer grown on a standard glass coverslip. By exploiting the functional properties of the polymer, fluorescent proteins are grafted onto the waveguides. A fluorescence LRM analysis of both the direct and the Fourier image plane reveals that a substantial amount of emitted radiation couples into a guided mode and then propagates into the nanometric waveguide. The observations of the mode are supported by numerical simulations.
Bloch surface waves-controlled fluorescence emission: Coupling into nanometer-sized polymeric waveguides / Ballarini, M; Frascella, F; Enrico, Emanuele; Mandracci, P; DE LEO, Maria; Michelotti, F; Giorgis, F; Descrovi, E.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 100:6(2012). [10.1063/1.3684272]
Bloch surface waves-controlled fluorescence emission: Coupling into nanometer-sized polymeric waveguides
ENRICO, EMANUELE;DE LEO, MARIA;
2012
Abstract
The lateral confinement of Bloch surface waves on a patterned multilayer is investigated by means of leakage radiation microscopy (LRM). Arrays of nanometric polymeric waveguides are fabricated on a proper silicon-nitride/ silicon-oxide multilayer grown on a standard glass coverslip. By exploiting the functional properties of the polymer, fluorescent proteins are grafted onto the waveguides. A fluorescence LRM analysis of both the direct and the Fourier image plane reveals that a substantial amount of emitted radiation couples into a guided mode and then propagates into the nanometric waveguide. The observations of the mode are supported by numerical simulations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.