| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
|
|
|
|
Au Films Composed of Nanoparticles Fabricated on Liquid Surfaces for SERS |
| Xunheng Ye , Jiawei Shen , Xiangming Tao , Gaoxiang Ye , and Bo Yang* |
| Department of Physics, Zhejiang University, Hangzhou 310027, China |
|
| Cite this article: |
|
Xunheng Ye , Jiawei Shen , Xiangming Tao et al 2021 Chin. Phys. Lett. 38 038102 |
|
|
|
|
Abstract A series of Au films with different nominal deposition thickness $d$ were fabricated on ionic liquid surfaces by thermal evaporation at room temperature, taken as surface-enhanced Raman scattering (SERS) substrates. Au atoms deposited on the liquid surfaces can diffuse and aggregate randomly and eventually form films with ramified structure, which consist of nanoparticles (NPs). There are amounts of ultrasmall ($\sim $1 nm or smaller) nanogaps among the Au NPs, which can dramatically enhance Raman signal. Raman spectra of R6G were investigated with the assistance of the Au films. The results indicate that the Au films with higher thickness possess better SERS performance when $5.0 \le d \le 30.0$ nm. A random distribution model of Au NPs was used in the finite-difference time-domain method and the simulation results are in good agreement with the experimental findings.
|
|
|
Received: 28 October 2020
Published: 02 March 2021
|
|
| PACS: |
78.30.-j
|
(Infrared and Raman spectra)
|
| |
68.55.-a
|
(Thin film structure and morphology)
|
| |
81.07.-b
|
(Nanoscale materials and structures: fabrication and characterization)
|
|
|
| Fund: Supported by the National Natural Science Foundation of China (Grant No. 11374082). |
|
|
|
| [1] | Albrecht M G and Creighton J A 1977 J. Am. Chem. Soc. 99 5215 |
| [2] | Kneipp K, Wang Y, Kneipp H, Perelman L T, Itzkan I, Dasari R and Feld M S 1997 Phys. Rev. Lett. 78 1667 |
| [3] | Nam J M, Oh J W, Lee H and Suh Y D 2016 Acc. Chem. Res. 49 2746 |
| [4] | Nie S M and Emery S R 1997 Science 275 1102 |
| [5] | Kleinman S L, Frontiera R R, Henry A I, Dieringer J A and Van Duyne R P 2013 Phys. Chem. Chem. Phys. 15 21 |
| [6] | Harroun S G, Abraham T J, Prudhoe C, Zhang Y, Scammells P J, Brosseau C L, Pye C C and Singer R D 2013 Phys. Chem. Chem. Phys. 15 19205 |
| [7] | Karaballi R A, Nel A, Krishnan S, Blackburn J and Brosseau C L 2015 Phys. Chem. Chem. Phys. 17 21356 |
| [8] | Li J H, Zhang S N, Zhai Y J, Ma J G, Fang W H and Zhang Y 2019 Acta Phys. Sin. 68 134203 (in Chinese) |
| [9] | Shin D M, Nie S, Qian X, Young A N, Wang M D, Ansari D O, Chen G Z, Peng Z H, Yin-Goen Q and Yang L 2008 Nat. Biotechnol. 26 83 |
| [10] | Moskovits M 1978 J. Chem. Phys. 69 4159 |
| [11] | Moskovits M 2005 J. Raman Spectrosc. 36 485 |
| [12] | Park W H and Kim Z H 2010 Nano Lett. 10 4040 |
| [13] | Ye G X, Michely T, Weidenhof V, Friedrich I and Wuttig M 1998 Phys. Rev. Lett. 81 622 |
| [14] | Li L, Bao Z L, Ye X H, Shen J W, Yang B, Ye G X and Tao X M 2020 Chin. Phys. Lett. 37 028102 |
| [15] | Shen J W, Ye X H, Bao Z L, Li L, Yang B, Tao X M and Ye G X 2020 Chin. Phys. B 29 066801 |
| [16] | Xie J P, Yu W Y, Zhang S L, Chen M G and Ye G X 2007 Phys. Lett. A 371 160 |
| [17] | Yu S J, Zhang Y J, Ye Q L, Cai P G, Tang X W and Ye G X 2003 Phys. Rev. B 68 193403 |
| [18] | Lu C X, Cheng Y, Pan Q, Tao X M, Yang B and Ye G X 2016 Sci. Rep. 6 19870 |
| [19] | Yang B, Ma R R, Li D M, Xia A G and Tao X M 2012 Thin Solid Films 520 2321 |
| [20] | Zhang C H, Lv N, Zhang X F, Yang B and Ye G X 2011 J. Phys.: Condens. Matter 23 435006 |
| [21] | Yang J L, Li R P, Han J H and Huang M J 2016 Chin. Phys. B 25 083301 |
| [22] | Zeng Z, Liu Y Y and Wei J J 2016 Trac-Trend Anal. Chem. 75 162 |
| [23] | Yang Z L, Chen S, Fang P P, Ren B, Girault H H and Tian Z Q 2013 Phys. Chem. Chem. Phys. 15 5374 |
| [24] | Zhang X F, Zhang C H, Lv N, Xie J P and Ye G X 2010 Chin. Phys. Lett. 27 096102 |
| [25] | Zhang P, Li Y, Wang D and Xia H 2016 Part. Part. Syst. Charact. 33 924 |
| [26] | Zhao Y, Zhang Y J, Meng J H, Chen S, Panneerselvam R, Li C Y, Jamali S B, Li X, Yang Z L, Li J F and Tian Z Q 2016 J. Raman Spectrosc. 47 662 |
| [27] | Solis D M, Taboada J M, Obelleiro F, Liz-Marzan L M and de Garcia A F J 2017 ACS Photon. 4 329 |
| [28] | McMahon J M, Li S, Ausman L K and Schatz G C 2012 J. Phys. Chem. C 116 1627 |
| [29] | Fang Y, Seong N H and D D D 2008 Science 321 388 |
| [30] | Huang J, He Z, He X, Liu Y, Wang T, Chen G, Tang C, Jia R, Liu L, Zhang L, Wang J, Ai X, Sun S, Xu X and Du K 2017 ACS Appl. Mater. & Interfaces 9 28902 |
| [31] | Qian L H and Chen M W 2007 Appl. Phys. Lett. 91 083105 |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
