Jithin Kundalam Kadavath, Bindu Krishnan, Rene Fabian Cienfuegos Pelaes, David Avellaneda Avellaneda, Selene Sepúlveda Guzman, Nora Aleyda Garcia-Gomez, Sadasivan Shaji
= 0.98) and remarkable temporal stability, maintaining signal fidelity for over 10 weeks under ambient conditions. The capability of multiplexed analyte identification is demonstrated through co-detection of glucose and uric acid at 1 pM. The facile fabrication, architectural scalability, and long-term operational stability position this 3D SERS sensor as a formidable candidate for next-generation, portable diagnostic platforms for bioanalytical applications.