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- W2746603485 abstract "It is important to design and fabricate nanoporous metals (NPMs) with optimized microstructures for specific applications. In this contribution, nanoporous coppers (NPCs) with controllable thicknesses and pore sizes were fabricated via the combination of a co-sputtering of Cu/Ti with a subsequent dealloying process. The effect of dealloying time on porous morphology and the corresponding surface enhanced Raman scattering (SERS) behaviors were systematically investigated. Transmission electron microscopy (TEM) identified the presences of the gaps formed between ligaments and also the nanobumps on the nanoparticle-aggregated ligament surface, which were likely to contribute as the “hot spots” for electromagnetic enhancement. The optimal NPC film exhibited excellent SERS performance towards Rhodamine 6G (R6G) with a low limiting detection (10−9 M), along with good uniformity and reproducibility. The calculated enhancement factor of ca. 4.71 × 107 was over Au substrates and comparable to Ag systems, promising the proposed NPC as a cheap candidate for high-performance SERS substrate." @default.
- W2746603485 created "2017-08-31" @default.
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- W2746603485 date "2018-01-01" @default.
- W2746603485 modified "2023-09-23" @default.
- W2746603485 title "Two-step fabrication of nanoporous copper films with tunable morphology for SERS application" @default.
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- W2746603485 doi "https://doi.org/10.1016/j.apsusc.2017.08.117" @default.
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