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Dubkov S, Overchenko A, Novikov D, Kolmogorov V, Volkova L, Gorelkin P, Erofeev A, Parkhomenko Y. Single-Cell Analysis with Silver-Coated Pipette by Combined SERS and SICM. Cells 2023; 12:2521. [PMID: 37947599 PMCID: PMC10650894 DOI: 10.3390/cells12212521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 11/12/2023] Open
Abstract
The study of individual cell processes that occur both on their surface and inside is highly interesting for the development of new medical drugs, cytology and cell technologies. This work presents an original technique for fabricating the silver-coated pipette and its use for the cell analysis by combination with surface-enhanced Raman spectroscopy (SERS) and scanning ion-conducting microscopy (SICM). Unlike the majority of other designs, the pipette opening in our case remains uncovered, which is important for SICM. SERS-active Ag nanoparticles on the pipette surface are formed by vacuum-thermal evaporation followed by annealing. An array of nanoparticles had a diameter on the order of 36 nm and spacing of 12 nm. A two-particle model based on Laplace equations is used to calculate a theoretical enhancement factor (EF). The surface morphology of the samples is investigated by scanning electron microscopy while SICM is used to reveal the surface topography, to evaluate Young's modulus of living cells and to control an injection of the SERS-active pipettes into them. A Raman microscope-spectrometer was used to collect characteristic SERS spectra of cells and cell components. Local Raman spectra were obtained from the cytoplasm and nucleus of the same HEK-293 cancer cell. The EF of the SERS-active pipette was 7 × 105. As a result, we demonstrate utilizing the silver-coated pipette for both the SICM study and the molecular composition analysis of cytoplasm and the nucleus of living cells by SERS. The probe localization in cells is successfully achieved.
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Affiliation(s)
- Sergey Dubkov
- Institute of Advanced Materials and Technologies, National Research University of Electronic Technology, 124498 Moscow, Russia
| | - Aleksei Overchenko
- Research Laboratory of Biophysics, National University of Science and Technology “MISIS” (MISIS), 119049 Moscow, Russia (P.G.); (A.E.)
- Molecular Nanophotonics Group, Peter Debye Institute for Soft Matter Physics, Leipzig University, 04109 Leipzig, Germany
| | - Denis Novikov
- Institute of Advanced Materials and Technologies, National Research University of Electronic Technology, 124498 Moscow, Russia
| | - Vasilii Kolmogorov
- Research Laboratory of Biophysics, National University of Science and Technology “MISIS” (MISIS), 119049 Moscow, Russia (P.G.); (A.E.)
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Lidiya Volkova
- Institute of Nanotechnology of Microelectronics RAS, 115487 Moscow, Russia
| | - Petr Gorelkin
- Research Laboratory of Biophysics, National University of Science and Technology “MISIS” (MISIS), 119049 Moscow, Russia (P.G.); (A.E.)
| | - Alexander Erofeev
- Research Laboratory of Biophysics, National University of Science and Technology “MISIS” (MISIS), 119049 Moscow, Russia (P.G.); (A.E.)
| | - Yuri Parkhomenko
- Research Laboratory of Biophysics, National University of Science and Technology “MISIS” (MISIS), 119049 Moscow, Russia (P.G.); (A.E.)
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Gradient SERS Substrates with Multiple Resonances for Analyte Screening: Fabrication and SERS Applications. Molecules 2022; 27:molecules27165097. [PMID: 36014328 PMCID: PMC9414786 DOI: 10.3390/molecules27165097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/05/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) provides a strong enhancement to an inherently weak Raman signal, which strongly depends on the material, design, and fabrication of the substrate. Here, we present a facile method of fabricating a non-uniform SERS substrate based on an annealed thin gold (Au) film that offers multiple resonances and gap sizes within the same sample. It is not only chemically stable, but also shows reproducible trends in terms of geometry and plasmonic response. Scanning electron microscopy (SEM) reveals particle-like and island-like morphology with different gap sizes at different lateral positions of the substrate. Extinction spectra show that the plasmonic resonance of the nanoparticles/metal islands can be continuously tuned across the substrate. We observed that for the analytes 1,2-bis(4-pyridyl) ethylene (BPE) and methylene blue (MB), the maximum SERS enhancement is achieved at different lateral positions, and the shape of the extinction spectra allows for the correlation of SERS enhancement with surface morphology. Such non-uniform SERS substrates with multiple nanoparticle sizes, shapes, and interparticle distances can be used for fast screening of analytes due to the lateral variation of the resonances within the same sample.
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Zhang L, Meng C, Zhang G, Bai D, Gao F, Xu L, Zhang W, Mei T, Zhao J. Nanofocusing of a metallized double periodic arranged nanocone array for surface-enhanced Raman spectroscopy. OPTICS EXPRESS 2021; 29:28086-28095. [PMID: 34614947 DOI: 10.1364/oe.435046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
A plasmonic double periodic arranged nanocone array (DPANA) integrated by nanotips and nanogaps exhibit strong capability of light compression, and thus lead to extremely enhanced electric near-field intensity. The DPANA is fabricated by the self-assembled mask integrated with the inductively couple plasma (ICP) etching technology. Finite-difference time-domain (FDTD) simulations suggest that the metallized DPANA can generate a strong hotspot at the sharp tip apex and the nanogap between adjacent sharp tips. The electric-field enhancement characteristic is firstly verified with the help of the second-order surface nonlinear optical response of the metallized DPANA. The surface-enhanced Raman spectroscopy (SERS) examination of the metallized DPANA exhibits high sensitivity due to clearly presenting the Raman spectra of Rhodamine-6G (R6G) with concentrations down to 10 pM and has excellent uniformity, time stability, and recyclability, simultaneously. Furthermore, the principle demonstration of SERS practical application is also performed for thiram. This as-prepared SERS substrate has great potential application for trace amount detection.
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Jue M, Pack CG, Oh S, Paulson B, Lee K, Kim JK. SERS Effect on Spin-Coated Seeding of Tilted Au-ZnO Nanorods for Low-Cost Diagnosis. MATERIALS 2020; 13:ma13235321. [PMID: 33255438 PMCID: PMC7727838 DOI: 10.3390/ma13235321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/16/2020] [Accepted: 11/23/2020] [Indexed: 01/21/2023]
Abstract
Uniformly parallel Au-coated ZnO nanorods have previously been shown to amplify local Raman signals, providing increased sensitivity to disease markers in the detection of inflammation and cancer. However, practical and cost-effective fabrication methods of substrates for surface-enhanced Raman spectroscopy (SERS) fail to produce highly uniform surfaces. Here, the feasibility of Raman enhancement on less-uniform substrates is assessed. ZnO nanorod structures were fabricated by hydrothermal synthesis, starting from spin-coated seed substrates. Following analysis, the nanostructures were coated with Au to create stochastically variant substrates. The non-uniformity of the fabricated Au-coated ZnO nanorod structures is confirmed morphologically by FE-SEM and structurally by X-ray diffraction, and characterized by the angular distributions of the nanorods. Monte Carlo finite element method simulations matching the measured angular distributions and separations predicted only moderate increases in the overall Raman enhancement with increasing uniformity. Highly variant substrates exhibited approximately 76% of the Raman enhancement of more uniform substrates in simulations and experiments. The findings suggest that, although highly inhomogeneous Au-coated ZnO nanorod substrates may not attain the same Raman enhancement as more uniform substrates, the relaxation of fabrication tolerances may be economically viable.
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Affiliation(s)
- Miyeon Jue
- Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Korea; (M.J.); (C.-G.P.); (B.P.); (K.L.)
| | - Chan-Gi Pack
- Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Korea; (M.J.); (C.-G.P.); (B.P.); (K.L.)
- Department of Convergence Medicine, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Seakhee Oh
- Department of Pediatrics, Asan Medical Center Children’s Hospital, University of Ulsan College of Medicine, Seoul 05505, Korea;
| | - Bjorn Paulson
- Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Korea; (M.J.); (C.-G.P.); (B.P.); (K.L.)
| | - Kwanhee Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Korea; (M.J.); (C.-G.P.); (B.P.); (K.L.)
| | - Jun Ki Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Korea; (M.J.); (C.-G.P.); (B.P.); (K.L.)
- Department of Convergence Medicine, University of Ulsan College of Medicine, Seoul 05505, Korea
- Correspondence: ; Tel.: +82-2-3010-8619
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Li D, Yao D, Li C, Luo Y, Liang A, Wen G, Jiang Z. Nanosol SERS quantitative analytical method: A review. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115885] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Geng F, Zhao H, Fu Q, Mi Y, Miao L, Li W, Dong Y, Wu M, Lei Y. Gold nanochestnut arrays as ultra-sensitive SERS substrate for detecting trace pesticide residue. NANOTECHNOLOGY 2018; 29:295502. [PMID: 29722294 DOI: 10.1088/1361-6528/aac22b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In comparison to conventional spectroscopic techniques based on chromatography, surface-enhanced Raman spectroscopy (SERS) enables the rapid identification and detection of trace pesticide residues present in trace amounts in the environment and foods. Herein, a facile approach to fabricate unique gold nanochestnuts (GNCs) as an ultra-sensitive SERS substrate for detecting trace pesticide residues has been developed based on anodic aluminum oxide (AAO) templates. The GNCs are synthesized through the galvanic replacement of Ag on the top of Ni nanorod arrays. The as-prepared GNCs have well-controlled structural parameters, and importantly have unique anisotropic morphologies that benefit the enhancement in SERS performance. As a result, rhodamine 6 G (R6G) can be efficiently detected with GNCs as the SERS substrate even with a concentration of only 10-12 M, and the Raman enhancement factor reaches up to 5.4 × 109 at this concentration. Further SERS measurement of thiram indicates a remarkable SERS-active sensitivity of the as-prepared GNCs with a detection limit of thiram up to 10-14 M. The GNCs also exhibit a high signal-to-noise ratio.
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Affiliation(s)
- Fei Geng
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
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Xu S, Lei Y. Template-Assisted Fabrication of Nanostructured Arrays for Sensing Applications. Chempluschem 2018; 83:741-755. [DOI: 10.1002/cplu.201800127] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/08/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Shipu Xu
- Institute of Physics & IMN MacroNano (ZIK); Ilmenau University of Technology; Unterpoerlitzer Strasse 38 98693 Ilmenau Germany
| | - Yong Lei
- Institute of Physics & IMN MacroNano (ZIK); Ilmenau University of Technology; Unterpoerlitzer Strasse 38 98693 Ilmenau Germany
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Tarish S, Xu Y, Wang Z, Mate F, Al-Haddad A, Wang W, Lei Y. Highly efficient biosensors by using well-ordered ZnO/ZnS core/shell nanotube arrays. NANOTECHNOLOGY 2017; 28:405501. [PMID: 28749787 DOI: 10.1088/1361-6528/aa82b0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have studied the fabrication of highly efficient glucose sensors using well-ordered heterogeneous ZnO/ZnS core/shell nanotube arrays (CSNAs). The modified electrodes exhibit a superior electrochemical response towards ferrocyanide/ferricyanide and in glucose sensing. Further, the fabricated glucose biosensor exhibited good performance over an acceptable linear range from 2.39 × 10-5 to 2.66 × 10-4 mM, with a sensitivity of 188.34 mA mM-1 cm-2, which is higher than that of the ZnO nanotube array counterpart. A low limit of detection was realized (24 μM), which is good compared with electrodes based on conventional structures. In addition, the enhanced direct electrochemistry of glucose oxidase indicates the fast electron transfer of ZnO/ZnS CSNA electrodes, with a heterogeneous electron transfer rate constant (K s) of 1.69 s-1. The fast electron transfer is attributed to the high conductivity of the modified electrodes. The presented ZnS shell can facilitate the construction of future sensors and enhance the ZnO surface in a biological environment.
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Affiliation(s)
- Samar Tarish
- Institute for Physics and IMN MacroNano®, Ilmenau University of Technology, Professor-Schmidt-Straβe 26, D-98693 Ilmenau, Germany. Department of Physics, College of Science, University of Al-Mustansiriyah, Baghdad, Iraq
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Zhou B, Gao Y, Wu X, Wen W. Control the drying configuration of suspensions via regulating the surface topologies for surface-enhanced Raman scattering optimization. J Colloid Interface Sci 2017; 502:67-76. [DOI: 10.1016/j.jcis.2017.04.090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/01/2017] [Accepted: 04/27/2017] [Indexed: 12/12/2022]
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Zhang L, Guan C, Wang Y, Liao J. Highly effective and uniform SERS substrates fabricated by etching multi-layered gold nanoparticle arrays. NANOSCALE 2016; 8:5928-37. [PMID: 26911794 DOI: 10.1039/c6nr00502k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Gold nanoparticle multilayers printed on silicon substrates layer by layer were etched by a gold etchant to form highly effective and uniform substrates for surface-enhanced Raman scattering (SERS). The performance of the SERS substrates was systematically studied by adjusting the number of nanoparticle layers and the etching time. The optimized enhancement factor (EF) and the detection limit of the substrates were determined to be 8.6 × 10(6) and 1 × 10(-12) M, respectively. The high EF and low detection limit were attributed to the high density of "hot-spots" and the facile accession of probe molecules to these spots. Moreover, the SERS substrates exhibited a nice uniformity with a small spot-to-spot variation and a good sample-to-sample reproducibility as well. The experimental results were supported by finite-difference time domain (FDTD) simulations. Our study suggests that low-cost, large-scale, and uniform SERS substrates with a high EF and low detection limit can be achieved by using bottom-up chemical methods.
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Affiliation(s)
- Li Zhang
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China.
| | - Changrong Guan
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China.
| | - Ying Wang
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China.
| | - Jianhui Liao
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China.
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Zeng Z, Liu Y, Wei J. Recent advances in surface-enhanced raman spectroscopy (SERS): Finite-difference time-domain (FDTD) method for SERS and sensing applications. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.06.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fu Q, Zhan Z, Dou J, Zheng X, Xu R, Wu M, Lei Y. Highly Reproducible and Sensitive SERS Substrates with Ag Inter-Nanoparticle Gaps of 5 nm Fabricated by Ultrathin Aluminum Mask Technique. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13322-13328. [PMID: 26023763 DOI: 10.1021/acsami.5b01524] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Applicable surface enhanced Raman scattering (SERS) active substrates require high enhancement factor (EF), excellent spatial reproducibility, and low-cost fabrication method on a large area. Although several SERS substrates with high EF and relative standard deviation (RSD) of signal less than 5% were reported, reliable fabrication for large area SERS substrates with both high sensitivity and high reproducibility via low-cost routes remains a challenge. Here, we report a facile and cost-effective fabrication process for large-scale SERS substrate with Ag inter-nanoparticle (NP) gaps of 5 nm based on ultrathin alumina mask (UTAM) surface pattern technique. Such closely packed Ag NP arrays with high density of electromagnetic field enhancement ("hot spots") on large area exhibit high SERS activity and excellent reproducibility, simultaneously. Rhodamine 6G molecules with concentration of 1 × 10(-7) M are used to determine the SERS performance, and an EF of ∼10(9) is obtained. It should be noted that we obtain RSDs about 2% from 10 random spots on an area of 1 cm(2), which implies the highly reproducible signals. Finite-difference time-domain simulations further suggest that the enhanced electric field originates from the narrow gap, which agrees well with the experimental results. The low value of RSD and the high EF of SERS signals indicate that the as-prepared substrate may be promising for highly sensitive and uniform SERS detection.
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Affiliation(s)
- Qun Fu
- †Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Zhibing Zhan
- ‡Institute for Physics and IMN MacroNano (ZIK), Technical University of Ilmenau, Prof. Schmidt Straße 26, 98693 Ilmenau, Germany
| | - Jinxia Dou
- †Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Xianzheng Zheng
- †Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Rui Xu
- ‡Institute for Physics and IMN MacroNano (ZIK), Technical University of Ilmenau, Prof. Schmidt Straße 26, 98693 Ilmenau, Germany
| | - Minghong Wu
- †Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Yong Lei
- †Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
- ‡Institute for Physics and IMN MacroNano (ZIK), Technical University of Ilmenau, Prof. Schmidt Straße 26, 98693 Ilmenau, Germany
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Li P, Huang T, Yang J, Wei S, Cai C, Chen Y, Lee JM. One-Step Electrodeposition of Polyallylamine-Functionalized Gold Nanodendrites and Their Application in Sensing. Chempluschem 2015; 80:1148-1152. [DOI: 10.1002/cplu.201500072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Revised: 03/25/2015] [Indexed: 11/08/2022]
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