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Optical transmission through hexagonal arrays of subwavelength holes in thin metal films
1Nanoparticle Technology Department, Center of Advanced Studies and Research, 53175 Bonn, Germany. ctistis@caesar.de
Nano Letters
|August 25, 2007
Abstract:
We have studied the light transmission through hexagonal arrays of subwavelength holes in thin gold and aluminum films, varying the film thickness between 20 and 120 nm while the hole diameter as well as the interhole distance have been kept constant at approximately 300 and approximately 500 nm, respectively. The films were characterized by means of UV-vis spectroscopy and scanning near-field optical microscopy (SNOM).
