Effect of Au Nanoparticle Agglomeration on SERS Signal Amplification
An analyzed substance’s signal intensity and detection sensitivity in surface-enhanced Raman spectroscopy (SERS) significantly depend on the size and agglomeration degree of nanoparticles (NPs) forming the enhancing structure. Structures were manufactured by aerosol dry printing (ADP), where NPs’ ag...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/5/812 |
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| author | Kirill Khabarov Emiliia Filalova Messan Nouraldeen Ekaterina Kameneva Andrey Musaev Sergei Tikhonov Victor Ivanov |
| author_facet | Kirill Khabarov Emiliia Filalova Messan Nouraldeen Ekaterina Kameneva Andrey Musaev Sergei Tikhonov Victor Ivanov |
| author_sort | Kirill Khabarov |
| collection | DOAJ |
| description | An analyzed substance’s signal intensity and detection sensitivity in surface-enhanced Raman spectroscopy (SERS) significantly depend on the size and agglomeration degree of nanoparticles (NPs) forming the enhancing structure. Structures were manufactured by aerosol dry printing (ADP), where NPs’ agglomeration depends on printing conditions and additional particle modification techniques. The influence of agglomeration degree on SERS signal enhancement was studied in three types of printed structures using the methylene blue model molecule as an analyte. We demonstrated that the ratio between individual NPs and agglomerates in a studied structure strongly affects SERS signal amplification, and structures formed mainly from non-agglomerated NPs enhance the signal better. In this sense, aerosol NPs modified by pulsed laser radiation provide better results than thermally modified NPs, since in laser modification a larger number of individual NPs is observed due to the absence of secondary agglomeration effects in the gas stream. However, increasing gas flow may minimize the secondary agglomeration, since the time allotted for the agglomeration processes is reduced. In this paper, we show how different NPs’ agglomeration tendencies influence SERS enhancement to demonstrate the process of using ADP to form inexpensive and highly efficient SERS substrates with huge application potential. |
| first_indexed | 2024-03-11T07:15:30Z |
| format | Article |
| id | doaj.art-6237554d09ec43ba9968ce8a5467c509 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T07:15:30Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-6237554d09ec43ba9968ce8a5467c5092023-11-17T08:16:47ZengMDPI AGNanomaterials2079-49912023-02-0113581210.3390/nano13050812Effect of Au Nanoparticle Agglomeration on SERS Signal AmplificationKirill Khabarov0Emiliia Filalova1Messan Nouraldeen2Ekaterina Kameneva3Andrey Musaev4Sergei Tikhonov5Victor Ivanov6Moscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny, 141701 Moscow, RussiaMoscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny, 141701 Moscow, RussiaMoscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny, 141701 Moscow, RussiaMoscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny, 141701 Moscow, RussiaMoscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny, 141701 Moscow, RussiaMoscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny, 141701 Moscow, RussiaMoscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny, 141701 Moscow, RussiaAn analyzed substance’s signal intensity and detection sensitivity in surface-enhanced Raman spectroscopy (SERS) significantly depend on the size and agglomeration degree of nanoparticles (NPs) forming the enhancing structure. Structures were manufactured by aerosol dry printing (ADP), where NPs’ agglomeration depends on printing conditions and additional particle modification techniques. The influence of agglomeration degree on SERS signal enhancement was studied in three types of printed structures using the methylene blue model molecule as an analyte. We demonstrated that the ratio between individual NPs and agglomerates in a studied structure strongly affects SERS signal amplification, and structures formed mainly from non-agglomerated NPs enhance the signal better. In this sense, aerosol NPs modified by pulsed laser radiation provide better results than thermally modified NPs, since in laser modification a larger number of individual NPs is observed due to the absence of secondary agglomeration effects in the gas stream. However, increasing gas flow may minimize the secondary agglomeration, since the time allotted for the agglomeration processes is reduced. In this paper, we show how different NPs’ agglomeration tendencies influence SERS enhancement to demonstrate the process of using ADP to form inexpensive and highly efficient SERS substrates with huge application potential.https://www.mdpi.com/2079-4991/13/5/812nanoparticlesgoldRaman spectroscopysurface-enhance Raman scatteringplasmonics |
| spellingShingle | Kirill Khabarov Emiliia Filalova Messan Nouraldeen Ekaterina Kameneva Andrey Musaev Sergei Tikhonov Victor Ivanov Effect of Au Nanoparticle Agglomeration on SERS Signal Amplification Nanomaterials nanoparticles gold Raman spectroscopy surface-enhance Raman scattering plasmonics |
| title | Effect of Au Nanoparticle Agglomeration on SERS Signal Amplification |
| title_full | Effect of Au Nanoparticle Agglomeration on SERS Signal Amplification |
| title_fullStr | Effect of Au Nanoparticle Agglomeration on SERS Signal Amplification |
| title_full_unstemmed | Effect of Au Nanoparticle Agglomeration on SERS Signal Amplification |
| title_short | Effect of Au Nanoparticle Agglomeration on SERS Signal Amplification |
| title_sort | effect of au nanoparticle agglomeration on sers signal amplification |
| topic | nanoparticles gold Raman spectroscopy surface-enhance Raman scattering plasmonics |
| url | https://www.mdpi.com/2079-4991/13/5/812 |
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