Surface plasmon resonance
Surface plasmon resonance (SPR) is usually carried out on
gold or silver. Despite the fact that plasmons are also known
in semiconductors such as pure silicon, this observation has
not led to a new class of detection devices based on SPR on
silicon. The optical properties of pure silicon are not
particularly good for SPR applications. However, conducting
metal oxides are a class of materials. Indium tin oxide is
only one example. We have observed plasmon bands on
fluorine-doped tin oxide and iridium oxide.
These surfaces provide possible applications on a variety of
substrates since they are thin films.