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Kwon HJ, Cho YJ, Yuk KM, Lee J, Choi SH, Byun KM. Development of nanogap-rich hybrid gold nanostructures by use of two non-lithographic deposition techniques for a sensitive and reliable SERS biosensor. Biomed Eng Lett 2024; 14:859-866. [PMID: 38946823 PMCID: PMC11208359 DOI: 10.1007/s13534-024-00381-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 03/24/2024] [Accepted: 04/21/2024] [Indexed: 07/02/2024] Open
Abstract
Practical application of surface-enhanced Raman spectroscopy (SERS) has suffered from several limitations by heterogeneous distribution of hot-spots, such as high signal fluctuation and the resulting low reliability in detection. Herein, we develop a strategy of more sensitive and reliable SERS platform through designing spatially homogeneous gold nanoparticles (GNPs) on a uniform gold nanoisland (GNI) pattern. The proposed SERS substrate is successfully fabricated by combining two non-lithographic techniques of electron beam evaporation and convective self-assembly. These bottom-up methods allow a simple, cost-effective, and large-area fabrication. Compared to the SERS substrates obtained from two separate nanofabrication methods, Raman spectra measured by the samples with both GNPs and GNIs present a significant increase in the signal intensity as well as a notable improvement in signal fluctuation. The simulated near-field analyses demonstrate the formation of highly amplified plasmon modes within and at the gaps of the GNP-GNI interfaces. Moreover, the suggested SERS sensor is evaluated to detect the glucose concentration, exhibiting that the detection sensitivity is improved by more than 10 times compared to the sample with only GNI patterns and a fairly good spatial reproducibility of 7% is accomplished. It is believed that our suggestion could provide a potential for highly sensitive, low-cost, and reliable SERS biosensing platforms that include many advantages for healthcare devices. Supplementary Information The online version contains supplementary material available at 10.1007/s13534-024-00381-4.
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Affiliation(s)
- Hyuck Ju Kwon
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin, 17104 Republic of Korea
| | - Yong Jun Cho
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin, 17104 Republic of Korea
| | - Kyeong Min Yuk
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin, 17104 Republic of Korea
| | - Jonghwan Lee
- School of Engineering, Brown University, Providence, RI 02912 USA
| | - Seung Ho Choi
- Department of Biomedical Engineering, Yonsei University, 1 Yonseidae-Gil, Wonju, Gangwon-Do 26493 Republic of Korea
| | - Kyung Min Byun
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin, 17104 Republic of Korea
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2
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Zhdanov G, Nyhrikova E, Meshcheryakova N, Kristavchuk O, Akhmetova A, Andreev E, Rudakova E, Gambaryan A, Yaminsky I, Aralov A, Kukushkin V, Zavyalova E. A Combination of Membrane Filtration and Raman-Active DNA Ligand Greatly Enhances Sensitivity of SERS-Based Aptasensors for Influenza A Virus. Front Chem 2022; 10:937180. [PMID: 35844641 PMCID: PMC9279936 DOI: 10.3389/fchem.2022.937180] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 05/25/2022] [Indexed: 01/20/2023] Open
Abstract
Biosensors combining the ultrahigh sensitivity of surface-enhanced Raman scattering (SERS) and the specificity of nucleic acid aptamers have recently drawn attention in the detection of respiratory viruses. The most sensitive SERS-based aptasensors allow determining as low as 104 virus particles per mL that is 100-fold lower than any antibody-based lateral flow tests but 10-100-times higher than a routine polymerase chain reaction with reversed transcription (RT-PCR). Sensitivity of RT-PCR has not been achieved in SERS-based aptasensors despite the usage of sophisticated SERS-active substrates. Here, we proposed a novel design of a SERS-based aptasensor with the limit of detection of just 103 particles per ml of the influenza A virus that approaches closely to RT-PCR sensitivity. The sensor utilizes silver nanoparticles with the simplest preparation instead of sophisticated SERS-active surfaces. The analytical signal is provided by a unique Raman-active dye that competes with the virus for the binding to the G-quadruplex core of the aptamer. The aptasensor functions even with aliquots of the biological fluids due to separation of the off-target molecules by pre-filtration through a polymeric membrane. The aptasensor detects influenza viruses in the range of 1·103-5·1010 virus particles per ml.
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Affiliation(s)
- Gleb Zhdanov
- Chemistry Department, Lomonosov Moscow State University, Moscow, Russia
| | | | | | | | - Assel Akhmetova
- Belozersky Research Institute of Physical Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | | | - Elena Rudakova
- Institute of Physiologically Active Compounds of Russian Academy of Science, Chernogolovka, Russia
| | - Alexandra Gambaryan
- Chumakov Federal Scientific Centre for Research and Development of Immune and Biological Products RAS, Moscow, Russia
| | - Igor Yaminsky
- Chemistry Department, Lomonosov Moscow State University, Moscow, Russia
- Physical Department, Lomonosov Moscow State University, Moscow, Russia
| | - Andrey Aralov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Vladimir Kukushkin
- Institute of Solid State Physics, Russian Academy of Science, Chernogolovka, Russia
| | - Elena Zavyalova
- Chemistry Department, Lomonosov Moscow State University, Moscow, Russia
- Belozersky Research Institute of Physical Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
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3
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Highly Sensitive, Cost‐Effective, and Flexible SERS Substrate Based on Green Synthesized GO/rGO for Pesticide Detection**. ChemistrySelect 2022. [DOI: 10.1002/slct.202200348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Choi JH, Choi M, Kang T, Ho TS, Choi SH, Byun KM. Combination of Porous Silk Fibroin Substrate and Gold Nanocracks as a Novel SERS Platform for a High-Sensitivity Biosensor. BIOSENSORS 2021; 11:441. [PMID: 34821657 PMCID: PMC8615832 DOI: 10.3390/bios11110441] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/28/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
Novel concepts for developing a surface-enhanced Raman scattering (SERS) sensor based on biocompatible materials offer great potential in versatile applications, including wearable and in vivo monitoring of target analytes. Here, we report a highly sensitive SERS sensor consisting of a biocompatible silk fibroin substrate with a high porosity and gold nanocracks. Our silk-based SERS detection takes advantage of strong local field enhancement in the nanoscale crack regions induced by gold nanostructures evaporated on a porous silk substrate. The SERS performance of the proposed sensor is evaluated in terms of detection limit, sensitivity, and linearity. Compared to the performance of a counterpart SERS sensor with a thin gold film, SERS results using 4-ABT analytes present that a significant improvement in the detection limit and sensitivity by more than 4 times, and a good linearity and a wide dynamic range is achieved. More interestingly, overlap is integral, and a quantitative measure of the local field enhancement is highly consistent with the experimental SERS enhancement.
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Affiliation(s)
- Ji Hyeon Choi
- Department of Biomedical Engineering, Kyung Hee University, Yongin 17104, Korea;
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin 17104, Korea;
| | - Munsik Choi
- Medical Device R&D Center, Seoul National University Bundang Hospital, Seongnam 13695, Korea;
| | - Taeyoung Kang
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin 17104, Korea;
| | - Tien Son Ho
- Department of Biomedical Engineering, Yonsei University, 1 Yonseidae-gil, Wonju 26493, Korea;
| | - Seung Ho Choi
- Department of Biomedical Engineering, Yonsei University, 1 Yonseidae-gil, Wonju 26493, Korea;
| | - Kyung Min Byun
- Department of Biomedical Engineering, Kyung Hee University, Yongin 17104, Korea;
- Department of Electronics and Information Convergence Engineering, Kyung Hee University, Yongin 17104, Korea;
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Liu M. Growth of Nanostructured Silver Flowers by Metal-Mediated Catalysis for Surface-Enhanced Raman Spectroscopy Application. ACS OMEGA 2020; 5:32655-32659. [PMID: 33376902 PMCID: PMC7758958 DOI: 10.1021/acsomega.0c05021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 11/24/2020] [Indexed: 05/13/2023]
Abstract
Metallic flowers with nanoscale surface roughness can provide a platform for highly sensitive and reproductive surface-enhanced Raman spectroscopy (SERS). Here, we present a method to grow a nanostructured silver flower (NSF) at the apex of a plasmonic tip based on metal-mediated catalysis, where the NSF was rapidly generated in no more than 1 min. The NSF was used as the SERS substrate under linear polarization beam (LPB) excitation to achieve a 10-9 M detection sensitivity for the malachite green analyte. The reproducibility for SERS is examined to have been guaranteed by comparing Raman intensity enhanced by different NSFs. Compared with the LPB, the azimuthal vector beam (AVB) excitation can further improve the SERS activity of the NSF, which is consistent with the simulation result that the gap mode can be effectively generated between two adjacent Ag nanoparticles (NPs) and between the NPs and the Ag pyramids on the surface of the NSF under AVB illumination. This work makes it promising for plasmonic tip-mediated catalysis to be applied in nanofabrication, the products of which can be further exploited in nanostructure-based ultrasensitive detection.
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Affiliation(s)
- Min Liu
- School
of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China
- MOE
Key Laboratory of Material Physics and Chemistry under Extraordinary
Conditions and Shaanxi Key Laboratory of Optical Information Technology,
School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
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Feng Y, Ping W, Zhiqiang Z, Danyang L, Li C, Shunbo L. High signal collection efficiency in a 3D SERS chip using a micro-reflector. OPTICS EXPRESS 2020; 28:39790-39798. [PMID: 33379521 DOI: 10.1364/oe.410966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/08/2020] [Indexed: 05/23/2023]
Abstract
To improve the sensitivity of surface-enhanced Raman spectroscopy (SERS) detection, we propose a three-dimensional (3D) SERS chip based on an inverted pyramid micro-reflector (IPMR) that converges Raman scattering light signals to improve the signal collection efficiency. The influence of the geometric parameters of the inverted pyramid structure on the Raman signal collection efficiency was analyzed by simulation for the determination of the optimal design parameters. The inverted pyramid through-hole structure was prepared on the silicon wafer through an anisotropic wet etching process, followed by the sputtering of a gold film to form the IPMR. The 3D SERS chip was constructed by bonding the IPMR and the active substrate that assembled with silver nanoparticles. Using Rhodamine 6G molecules, the Raman intensity measured with the 3D SERS chip was threefold greater than that of the silicon-based SERS substrate under the same test conditions. These experimental results show that the 3D SERS chip can significantly improve the SERS signal intensity. Its 3D structure is convenient for integration with microfluidic devices and has great potential in biochemical detection applications.
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