Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance
The growth mechanism of nanocolumnar silver thin film deposited on a smooth silicon substrate using electron beam evaporation process at an oblique angle was simulated with the Kinetic Monte Carlo method. Following the simulated silver nanostructured thin film, a further computational simulation was...
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MDPI AG
2021-04-01
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doaj-578dd77af1d64769987122b35addacd92021-04-15T23:06:48ZengMDPI AGCoatings2079-64122021-04-011145845810.3390/coatings11040458Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS PerformanceDatai Hui0Shun Zhou1Changlong Cai2Shigeng Song3Zhentao Wu4Jian Song5Da Zhang6Xiao Meng7Bo Lu8Yingbu Duan9Hayrigul Tursun10Des Gibson11School of Opto-Electronical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Opto-Electronical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Opto-Electronical Engineering, Xi’an Technological University, Xi’an 710021, ChinaInstitute of Thin Film, Sensors and Imaging, School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley G72 0LH, UKInstitute of Thin Film, Sensors and Imaging, School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley G72 0LH, UKInstitute of Thin Film, Sensors and Imaging, School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley G72 0LH, UKSchool of Opto-Electronical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Opto-Electronical Engineering, Xi’an Technological University, Xi’an 710021, ChinaInstitute of Thin Film, Sensors and Imaging, School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley G72 0LH, UKSchool of Opto-Electronical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, ChinaInstitute of Thin Film, Sensors and Imaging, School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley G72 0LH, UKThe growth mechanism of nanocolumnar silver thin film deposited on a smooth silicon substrate using electron beam evaporation process at an oblique angle was simulated with the Kinetic Monte Carlo method. Following the simulated silver nanostructured thin film, a further computational simulation was done using COMSOL for surface-enhanced Raman scattering effects. The simulation results were compared against corresponding experimental results, which demonstrated high agreement between simulation results and experimental data. It was found that as the incident deposition angle increased, the density of the Ag thin film significantly decreased and the surface roughness increased. When the incident deposition angle was at 75° and 85°, the resulting nanocolumnar structure was significantly tilted. For Ag thin films deposited at all investigated angles, surface-enhanced Raman scattering effects were observed. Particularly, the Ag nanocolumns deposited at 85° showed remarkable Surface-enhanced Raman Scattering effects. This was seen in both COMSOL simulations and experimental results: Enhancement factors were 2 × 10<sup>7</sup> in COMSOL simulation and 3.3 × 10<sup>5</sup> in the experiment.https://www.mdpi.com/2079-6412/11/4/458Kinetic Monte Carlo simulationOblique-Angle Depositionsilver thin filmnanocolumnar structureSERS |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Datai Hui Shun Zhou Changlong Cai Shigeng Song Zhentao Wu Jian Song Da Zhang Xiao Meng Bo Lu Yingbu Duan Hayrigul Tursun Des Gibson |
| spellingShingle |
Datai Hui Shun Zhou Changlong Cai Shigeng Song Zhentao Wu Jian Song Da Zhang Xiao Meng Bo Lu Yingbu Duan Hayrigul Tursun Des Gibson Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance Coatings Kinetic Monte Carlo simulation Oblique-Angle Deposition silver thin film nanocolumnar structure SERS |
| author_facet |
Datai Hui Shun Zhou Changlong Cai Shigeng Song Zhentao Wu Jian Song Da Zhang Xiao Meng Bo Lu Yingbu Duan Hayrigul Tursun Des Gibson |
| author_sort |
Datai Hui |
| title |
Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance |
| title_short |
Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance |
| title_full |
Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance |
| title_fullStr |
Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance |
| title_full_unstemmed |
Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance |
| title_sort |
modeling and experimental investigations of nanostructured ag thin films produced by oblique-angle deposition and its sers performance |
| publisher |
MDPI AG |
| series |
Coatings |
| issn |
2079-6412 |
| publishDate |
2021-04-01 |
| description |
The growth mechanism of nanocolumnar silver thin film deposited on a smooth silicon substrate using electron beam evaporation process at an oblique angle was simulated with the Kinetic Monte Carlo method. Following the simulated silver nanostructured thin film, a further computational simulation was done using COMSOL for surface-enhanced Raman scattering effects. The simulation results were compared against corresponding experimental results, which demonstrated high agreement between simulation results and experimental data. It was found that as the incident deposition angle increased, the density of the Ag thin film significantly decreased and the surface roughness increased. When the incident deposition angle was at 75° and 85°, the resulting nanocolumnar structure was significantly tilted. For Ag thin films deposited at all investigated angles, surface-enhanced Raman scattering effects were observed. Particularly, the Ag nanocolumns deposited at 85° showed remarkable Surface-enhanced Raman Scattering effects. This was seen in both COMSOL simulations and experimental results: Enhancement factors were 2 × 10<sup>7</sup> in COMSOL simulation and 3.3 × 10<sup>5</sup> in the experiment. |
| topic |
Kinetic Monte Carlo simulation Oblique-Angle Deposition silver thin film nanocolumnar structure SERS |
| url |
https://www.mdpi.com/2079-6412/11/4/458 |
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