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

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

2025 IEEE Photonics Conference-IPC, Singapur, 9 - 13 Kasım 2025, (Tam Metin Bildiri)

• Yayın Türü: Bildiri / Tam Metin Bildiri
• Doi Numarası: 10.1109/ipc65510.2025.11282407
• Basıldığı Ülke: Singapur
• Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.