A NANOPOROUS OPTICAL SENSOR ELEMENT

摘要

A sensor element is disclosed. The sensor element comprises a first element which is nanoporous, and a second element which is nanoporous, the second element enclosing the first element. The surfaces of the nanopores of the first- and second element differ in hydrophilicity, so that the surfaces of the nanopores of one element is generally more hydrophobic while the other is generally more hydrophilic, and hence the sensor element is capable of selectively having the first element filled with a fluid. The sensor element is capable of guiding light through the fluid-filled first element and can act as a nanoporous waveguide. The sensor element according to the invention is particularly useful for spectroscopy on fluids.