Opto-Electronic Engineering, Volume. 50, Issue 3, 220322(2023)
Femtosecond laser direct writing processing of SERS substrates and applications
Figures & Tables(10)
![Four methods of femtosecond laser preparation SERS substrate [7, 30-32]. Figure reproduced with permission from: ref. [7] © Wiley; ref. [30-31] © Elsevier; ref. [32] © The Royal Society of Chemistry](/Images/icon/loading.gif){kind=icon}
Fig. 2. SERS principle. (a) Inelastic light scattering of molecules on corrugated metal surfaces[33]; (b) localized surface plasmon resonances (LSPRs) on the surface of precious metals[36]. Figure reproduced with permission from: (a) ref. [33] © American Chemical Society; (b) ref. [36] © The Royal Society of Chemistry
Fig. 3. Preparation of SERS microstructures by top-down micromachining and particle self-assembly. (a) RIE[45]; (b, c) EBL[46-47]; (d-f) Nanoparticle self-assembly[48-50]; Scale bar: (e) 20 nm; (f) 200 nm. Figure reproduced with permission from: (a) ref. [45] © American Chemical Society; (b) ref. [46], (e) ref. [49] and (f) ref. [50] © under a Creative Commons Attribution-NonCommercial-No- Derivatives 4.0 International License; (c) ref. [47] © American Chemical Society; (d) ref. [48] © The American Association for the Advancement of Science
Fig. 4. Preparation of SERS microstructure by microcolumn self-assembly methods. (a) Self-assembly of gold nanopillars[55]; (b) Self-assembly of polymer-silver micropillars[56]; (c) Self-assembly of polymer-silver micropillars[57]; (d) Self-assembly of silver micropillars[58]; (e) Self-assembly of polymer-gold micropillars[59]. Figure reproduced with permission from: (a) ref. [55] and (e) ref. [59] © American Chemical Society; (b) ref. [56], (c) ref. [57] and (d) ref. [58] © Wiley
Fig. 5. Femtosecond two-photon reduction to prepare SERS substrates. (a) Two-photon reduction principle[70]; (b)Two-photon reduced silver microwire[71]; Scale bar: (b) 10 μm; (e) 1 μm. Figure reproduced with permission from: (a) ref. [70], (b) ref. [71], (c) ref. [74] and (e) ref. [71] © Wiley; (d) ref. [72] © The Royal Society of Chemistry
Fig. 6. Femtosecond laser cutting metal to prepare SERS substrate. (a) Femtosecond laser directly ablated metal surface forming nanostructure principle [80]; (b) Ag periodic surface[91]; (c) Superhydrophilic - superhydrophobic patterned substrate structures were prepared directly on copper surface [30]; (d) S-Ag-Ar substrate[92]; (e) Titanium alloy SERS substrate[93]. Figure reproduced with permission from: (a) ref. [80] © Elsevier; (b) ref. [91], (c) ref. [30] and (d) ref. [92] © Elsevier; (e) ref. [93] © under a Creative Commons Attribution-NonCommercial-No- Derivatives 4.0 International License
Fig. 7. Femtosecond laser cutting-sputtering to prepare a SERS substrate. (a) Large area SERS substrate[105]; (b) Flexible transparent SERS substrate[31]; (c) Glass SERS substrate[106]; (d) Hydrophobic-superhydrophobic SERS substrate[107]; (e) Superhydrophobic-hydrophilic SERS substrate[108] . Figure reproduced with permission from: (a) ref. [108], (b) ref. [31] and (c) ref. [106] © Elsevier; (d) ref. [107] © BioMed Central Ltd unless otherwise stated; (e) ref. [108] © American Chemical Society
Fig. 9. Femtosecond laser processing capillary self-assembly to prepare SERS substrate. (a) Capillary force self-assembly[126]; (b) Three-dimensional SERS structure based on capillary force self-assembly microchannels[7]. Figure reproduced with permission from: (a) ref. [126] © American Chemical Society; (b) ref. [7] © Wiley
Table 1. Comparison of four methods for processing SERS substrates by femtosecond laser
View tableView in ArticleTable 1. Comparison of four methods for processing SERS substrates by femtosecond laser
基底类型及维度 微纳结构 分析物 检测浓度下限/mol 增强因子 特殊基底 参考文献 双光子还原金属—-三维 银微花阵列 4-AP 10−10 1×108 封闭微通道 [ 71 ]银钯纳米颗粒 R6G 10−9 2.6×108 封闭微通道 [ 73 ]银纳米颗粒 CV 10−13 / 封闭微通道 [ 74 ]粗糙银纳米结构 R6G 10−9 1×107 光纤端面 [ 78 ]飞秒激光切割金属—二维 金纳米颗粒 R6G 10−9 2.4×108 金板 [ 94 ]铜微粒和粒子团 R6G 10−14 2.09×1014 铜板 [ 30 ]银微粒和粒子团 R6G 10−8 5.3×1014 银板 [ 92 ]钛合金纳米颗粒 R6G 10−11 7.85×105 钛合金 [ 97 ]飞秒激光切割-溅射—二维 金铂纳米颗粒 R6G 10−6 8.46×107 硅 [ 105 ]银纳米颗粒 R6G 10−12 5.6×107 柔性FEP膜 [ 31 ]银纳米颗粒 R6G / 2×105 玻璃 [ 106 ]金纳米颗粒 R6G 10−6 / PTFE [ 117 ]银纳米颗粒 R6G 10−17 5.19×1013 铜箔 [ 109 ]飞秒激光3D打印—三维 金纳米颗粒 水晶紫 10−6 / 光纤端面 [ 121 ]金纳米颗粒 R6G 10−7 3×103 光纤端面 [ 122 ]金纳米颗粒 R6G 10−6 8×107 开放微通道 [ 7 ]
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Zhidong Yin, Caiding Ni, Sizhu Wu, Zhaoxin Lao. Femtosecond laser direct writing processing of SERS substrates and applications[J]. Opto-Electronic Engineering, 2023, 50(3): 220322
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Category: Article
Received: Nov. 30, 2022
Accepted: Feb. 6, 2023
Published Online: May. 4, 2023
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