A plasmon filter may include an element supportive of plasmon energy and having a plurality of openings through which a material may pass. A system includes a fluid filter supportive of evanescent energy, an evanescent field generator, a sensor, and/or other components. A corresponding method may include generating plasmons on the filter and exposing a material to the plasmon energy.
1. An apparatus comprising:
a first element supportive of plasmon energy in a first energy range, the first element including a first plurality of openings;
each of the openings in the first plurality of openings being configured to selectively pass a first portion of a first material;
each of the openings in the first plurality of openings having a respective characteristic dimension selected to provide substantial overlap of the passed first portion of the first material and the plasmon energy in the first energy range proximate the opening; and
wherein at least one of the openings in the first plurality of openings is operably connected to a MEMS to selectively pass the first portion of the first material.
2. A method comprising:
filtering a fluid in a fluid flow region;
generating a plasmon field in the fluid flow region, wherein generating a plasmon field in the fluid flow region further includes;
illuminating a portion of the region with ultraviolet energy; and
converting a portion of the ultraviolet energy to plasmon energy;
passing the fluid through the fluid flow region; and
altering a property of the fluid via the plasmon field.
3. The method of claim 2 wherein altering a property of the fluid includes destroying a pathogen in the fluid.