Abstract
Nano- and micro-structures of thin plasmonic films by focused femtosecond laser pulses was demonstrated as chemo- and bio-sensing substrates for surface-enhanced spectroscopies. As an example, large regular arrays of microholes (mm-sized laboratory-scale) of millions holes with variable periods were produced in thin films of diverse plasmonic metals or alloys, demonstrating surface plasmon-polariton enhanced extraordinary transmission.
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