US 7,321,422 B2
SERS-active structures having nanoscale dimensions
Zhiyong Li, Palo Alto, Calif. (US); and Shih-Yuan Wang, Palo Alto, Calif. (US)
Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US)
Filed on Sep. 16, 2004, as Appl. No. 10/942,482.
Prior Publication US 2006/0055922 A1, Mar. 16, 2006
Int. Cl. G01J 3/44 (2006.01)
U.S. Cl. 356—301 32 Claims
OG exemplary drawing
 
1. A SERS-active structure comprising:
a substrate;
a plurality of features located at predetermined positions on a surface of the substrate, each feature of the plurality of features including a SERS-active material, each feature of the plurality of features having nanoscale dimensions and being separated from one another by a predetermined distance of between about 1 and about 50 nanometers; and
an electric potential between at least two features of the plurality of features.