Gold/Silver-coated Nano-pillar Arrays Fabricated by Nanoimprint lithography as Surface-enhanced Raman Scattering Substrate
| Autor: | Yi-ChunChou, 周意竣 |
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| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 In this study, we use nanoimprint lithography (NIL) to fabricate silver coated nano-pillar arrays (NPAs) as surface enhanced Raman scattering (SERS) substrate. Such method makes us to duplicate high density NPAs (with 50 nm diameter and 100 nm period) made by other expensive fabrication method easily. With silver deposition, we can reduce the gap between adjacent pillars to 25 nm to produce stronger hot spots. Changing the height of NPAs, the SERS sensing results show that the Rhodamine 6G with the concentration down to 10-9 M can be detected when the height is 50 nm. Besides of low detection limit, our SERS substrates show good uniformity with RSD down to 8.67%. Compared with conventional fabrication method, our approach can have high throughput and reproducibility simultaneously. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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