| 초록 |
A variety of nano-scaled structures having enhanced performances in terms of sensitivity, selectivity, accuracy, and reproducibility have been extensively utilized in developing biomedical and environmental sensor chips. However, fabrication methods of those structures have usually required expensive instruments with complicated and time-consuming steps. Herein, we demonstrate a simple and inexpensive method to fabricate porous and three-dimensional (3D) nanoplasmonic structures composed of polydimethylsiloxane (PDMS) matrix and metal nanoparticles templated by sucrose powder mold. The structural and optical properties of the fabricated structures were adjusted by controlling the concentration of the metal ion precursor and the size of the sucrose particles. To demonstrate the enhancement of the nanophotonic signals, the structures were further applied to detect surface-enhanced Raman scattering (SERS) of biomolecules and environmentally hazardous substances at low concentration. We believe that our results would contribute to development of highly sensitive nanophotonic sensor chips for further practical applications in the fields. |
