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In this work, a novel method combining fabrication of nonlithographic Au-film over nanosphere (AuFON) with gradual rapid thermal annealing (RTA) treatment was developed to produce a high performance of surface-enhanced Raman scattering (SERS) substrate. The highly uniform and periodic AuFON was achieved by the downscaling processs in the modified nanosphere lithography technique using 100-nm polystyrene...
In this work, 5 nm Au film was deposited on 100 nm polystyrene (PS) nanobeads and tuned by three different temperatures of a short rapid thermal annealing (RTA) process, 250°, 500° and 750°. Results show that structural alteration of Au-film morphology due to RTA led to a gradual enhancement of SERS response on the detection of Rhodamine 6G (R6G) Raman probe achieving the highest enhancement factor...
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