Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application
Abstract The unique photonic effect of self-assembled metal nanoparticles is widely used in many applications. In this article, we prepared self-assembled gold nanorod (GNR) vertical arrays substrate by an evaporation method and found that the morphology of the substrate can be effectively regulated...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-04-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-019-2946-6 |
| _version_ | 1797708047133442048 |
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| author | Jun Dong Xing Zhao Wei Gao Qingyan Han Jianxia Qi Yongkai Wang Sandong Guo Mengtao Sun |
| author_facet | Jun Dong Xing Zhao Wei Gao Qingyan Han Jianxia Qi Yongkai Wang Sandong Guo Mengtao Sun |
| author_sort | Jun Dong |
| collection | DOAJ |
| description | Abstract The unique photonic effect of self-assembled metal nanoparticles is widely used in many applications. In this article, we prepared self-assembled gold nanorod (GNR) vertical arrays substrate by an evaporation method and found that the morphology of the substrate can be effectively regulated by changing the immersion time in the target molecules solution to obtain different Raman enhancement effects. We separately calculated the local electromagnetic field of the GNR vertical arrays and disorder substrate by the finite element method (FEM), which was consistent with the experimental results. Based on optimal soaking time, the sensitivity, reproducibility, and stability of substrates were separately studied. The experimental results show that the GNR vertical arrays can detect Rhodamine 6G (Rh6G) at concentrations as low as 10−11 M and exhibit good reproducibility and stability due to local electromagnetic (EM) field enhancement caused by the coupling of adjacent nanorods. Thus, our work can demonstrate that the substrate has excellent surface-enhanced Raman scattering (SERS) activity and the obtained GNR vertical arrays have great potential for biosensor and biodetection. |
| first_indexed | 2024-03-12T06:16:36Z |
| format | Article |
| id | doaj.art-3e138d99f73d4847a41114cd831d90a8 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T06:16:36Z |
| publishDate | 2019-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-3e138d99f73d4847a41114cd831d90a82023-09-03T02:31:58ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2019-04-011411910.1186/s11671-019-2946-6Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and ApplicationJun Dong0Xing Zhao1Wei Gao2Qingyan Han3Jianxia Qi4Yongkai Wang5Sandong Guo6Mengtao Sun7School of Electronic Engineering, Xi’an University of Posts and TelecommunicationsSchool of Electronic Engineering, Xi’an University of Posts and TelecommunicationsSchool of Electronic Engineering, Xi’an University of Posts and TelecommunicationsSchool of Electronic Engineering, Xi’an University of Posts and TelecommunicationsSchool of Electronic Engineering, Xi’an University of Posts and TelecommunicationsSchool of Electronic Engineering, Xi’an University of Posts and TelecommunicationsSchool of Electronic Engineering, Xi’an University of Posts and TelecommunicationsSchool of Mathematics and Physics, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, University of Science and Technology BeijingAbstract The unique photonic effect of self-assembled metal nanoparticles is widely used in many applications. In this article, we prepared self-assembled gold nanorod (GNR) vertical arrays substrate by an evaporation method and found that the morphology of the substrate can be effectively regulated by changing the immersion time in the target molecules solution to obtain different Raman enhancement effects. We separately calculated the local electromagnetic field of the GNR vertical arrays and disorder substrate by the finite element method (FEM), which was consistent with the experimental results. Based on optimal soaking time, the sensitivity, reproducibility, and stability of substrates were separately studied. The experimental results show that the GNR vertical arrays can detect Rhodamine 6G (Rh6G) at concentrations as low as 10−11 M and exhibit good reproducibility and stability due to local electromagnetic (EM) field enhancement caused by the coupling of adjacent nanorods. Thus, our work can demonstrate that the substrate has excellent surface-enhanced Raman scattering (SERS) activity and the obtained GNR vertical arrays have great potential for biosensor and biodetection.http://link.springer.com/article/10.1186/s11671-019-2946-6Gold nanorodsSelf-assembled methodSurface-enhanced Raman scatteringSurface plasmon resonance |
| spellingShingle | Jun Dong Xing Zhao Wei Gao Qingyan Han Jianxia Qi Yongkai Wang Sandong Guo Mengtao Sun Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application Nanoscale Research Letters Gold nanorods Self-assembled method Surface-enhanced Raman scattering Surface plasmon resonance |
| title | Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application |
| title_full | Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application |
| title_fullStr | Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application |
| title_full_unstemmed | Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application |
| title_short | Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application |
| title_sort | nanoscale vertical arrays of gold nanorods by self assembly physical mechanism and application |
| topic | Gold nanorods Self-assembled method Surface-enhanced Raman scattering Surface plasmon resonance |
| url | http://link.springer.com/article/10.1186/s11671-019-2946-6 |
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