Patent ID: 8601610

Claim:
A probe for Raman scattering spectroscopy, the probe comprising: a probe body; and an optical electric field enhancement element comprising a tungsten oxide nanorod which includes a plurality of conductive layers formed therein in a direction parallel to a longitudinal axis of the nanorod, wherein the conductive layers are comprised of oxygen-deficient planes, and adjacent conductive layers are isolated from each other via an insulating layer, wherein the composition of the nanorod is WOx, 2.5≦x≦3, wherein the optical electric field enhancement element is treated through local oxidation of the tungsten oxide nanorod by laser irradiation in air, wherein an active site of enhanced Raman spectroscopy is located at a tip of the nanorod, and wherein the optical electric field enhancement element exhibits a Raman scattering enhancement effect of 10 10 and is thereby capable of detecting single-molecule Raman scattering.