Patent ID: 8416406

Claim:
A sensing device for producing a Raman signal, comprising: a plurality of micro-rods or nano-rods arranged in rows and columns on a substrate in a two-dimensional (2D) array, each of the micro-rods or nano-rods having a length extending outwardly from the substrate, the length of each micro- or nano-rod in a single row being substantially the same, with the micro- or nano-rod length of each row being different from the micro- or nano-rod length of each other row, and each row of micro-rods or nano-rods having a respective resonant vibration frequency that varies from row to row; a source of vibration energy, operatively connected to the substrate, for exciting vibration in each of the micro-rods or nano-rods in the 2D array such that a responding row is to resonate when an exciting frequency approaches the resonant vibration frequency of the responding row; and a free end of each of the micro-rods or nano-rods to substantially contact an adjacent micro-rod or nano-rod when vibration is excited.