Low-Cost SERS Substrates via AuNP-Decorated Carbonized Polyimide Films for Fluorescence-Quenched Raman Sensing

Gene S., Khan G. A., Tuzel D., Kina S., BEK A., Cinar K.

2025 IEEE Photonics Conference-IPC, Singapore, 9 - 13 November 2025, (Full Text)

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/ipc65510.2025.11282407
  • Country: Singapore
  • Middle East Technical University Affiliated: Yes

Abstract

We developed a low-cost SERS substrate using laser-carbonized poly-oxydiphenylene-pyromellitimide (polyimide) and gold nanoparticles. This hybrid suppresses fluorescence and enhances Raman signals. Tested with Rhodamine 6G, it reveals high signal-to-noise ratio peaks, offering a practical, scalable solution for in-situ molecular sensing.