US 12,455,268 B2
Plasmonic microwave metamaterial waveguide sensing
Roman Shugayev, Albuquerque, NM (US); Jagannath Devkota, Pittsburgh, PA (US); and Paul R. Ohodnicki, Jr., Pittsburgh, PA (US)
Assigned to United States Department of Energy, Washington, DC (US)
Filed by United States Department of Energy, Washington, DC (US)
Filed on Jan. 26, 2023, as Appl. No. 18/101,702.
Claims priority of provisional application 63/304,873, filed on Jan. 31, 2022.
Prior Publication US 2023/0243760 A1, Aug. 3, 2023
Int. Cl. G01N 33/00 (2006.01); G01N 22/00 (2006.01)
CPC G01N 33/0027 (2013.01) [G01N 33/004 (2013.01); G01N 22/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method to detect the presence or concentration of an analyte in the environment of a spoof plasmon sensor comprising:
providing a spoof plasmon sensor into an environment;
interrogating said spoof plasmon sensor with an electromagnetic signal;
collecting a modified electromagnetic signal from the spoof plasmon sensor; and
analyzing the modified electromagnetic signal to detect an analyte in the environment of the sensor
wherein the spoof plasmon sensor comprises a substrate with a superior surface, wherein a conductive material is disposed on the superior surface of the substrate, wherein said conductive material defines a waveguide, wherein the waveguide defines spoof plasmon cavities comprising exposed substrate,
wherein said modified electromagnetic signal is generated as a result of an analyte in the environment interacting with and changing the permittivity of the substrate; and wherein the analyte interacting with the substrate changes the permittivity of the substrate by causing the substrate to change phase.