US 12,117,400 B1
Method for measuring Raman nano-light spectra from solid support
Mohammad Kamal Hossain, Dhahran (SA); and Qasem Ahmed Drmosh, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Jun. 10, 2024, as Appl. No. 18/738,116.
Application 18/738,116 is a continuation of application No. 17/894,271, filed on Aug. 24, 2022, granted, now 12,031,918.
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 21/65 (2006.01); B82Y 30/00 (2011.01); C23C 14/18 (2006.01); C23C 14/58 (2006.01); G01N 33/543 (2006.01)
CPC G01N 21/658 (2013.01) [B82Y 30/00 (2013.01); C23C 14/185 (2013.01); C23C 14/5806 (2013.01); G01N 33/5438 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method of obtaining a Raman spectrum of an analyte, the method comprising:
depositing the analyte onto a surface-enhanced Raman scattering electrode to form a sample;
exposing the sample to laser light such that a portion of the laser light is scattered by the sample to form scattered light; and
detecting the scattered light,
wherein the surface-enhanced Raman scattering-active electrode, comprises:
a solid support;
a porous oxide layer comprising transition metal oxide nanoparticles present on a surface of the solid support and has a mean pore size of 2 to 30 nm, wherein the transition metal oxide nanoparticles comprise nanoparticles of at least one selected from the group consisting of barium titanate, strontium titanate, lithium niobate and lanthanum calcium manganite; and
at least one of noble metal nanoneedles and noble metal nanorings present on the porous oxide layer;
wherein the noble metal nanoneedles have an average length of 350-800 nm, a flat end with an average width in a range of 100-150 nm, and a pointed end; and
wherein the noble metal nanorings have a thickness of 50-300 nm and are present in the form of annular clusters having elliptical shapes with an average diameter in a range of 35-60 nm.