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Babich E, Reduto I, Lipovskii A. Diffusive Formation of Au/Ag Alloy Nanoparticles of Governed Composition in Glass. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4202. [PMID: 36500825 PMCID: PMC9738725 DOI: 10.3390/nano12234202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
For the first time we show that the introduction of silver ions in the glass containing gold nanoparticles (NPs) and additional heat treatment of the glass in the air lead to the formation of Au/Ag alloy NPs. The proposed approach makes it possible to position localized surface plasmon resonance of the NPs by selecting the heat treatment temperature, which determines the silver proportion in the alloy NPs. This allows for expanding customizability of NPs for applications in surface-enhanced Raman scattering spectroscopy, catalysis and biochemistry. Developed technique benefits from the presence of silver in the glass in ionic form, which prevents the oxidation of silver and provides stable preparation of Au/Ag alloy NPs.
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Affiliation(s)
- Ekaterina Babich
- Laboratory of Nanophotonics, Alferov University, Khlopina 8/3, 194021 Saint Petersburg, Russia
| | - Igor Reduto
- Laboratory of Nanophotonics, Alferov University, Khlopina 8/3, 194021 Saint Petersburg, Russia
| | - Andrey Lipovskii
- Laboratory of Nanophotonics, Alferov University, Khlopina 8/3, 194021 Saint Petersburg, Russia
- Institute of Physics and Mechanics, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 Saint Petersburg, Russia
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2
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Awada C. Plasmonic Enhanced SERS in Ag/TiO 2 Nanostructured Film: An Experimental and Theoretical Study. MICROMACHINES 2022; 13:mi13101595. [PMID: 36295948 PMCID: PMC9610157 DOI: 10.3390/mi13101595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/14/2022] [Accepted: 09/21/2022] [Indexed: 05/30/2023]
Abstract
In this work, we present a new study on the electromagnetic (EM) enhancement properties generated by Ag/TiO2 toward the finger print of methylene blue (MB) molecules deposited on the surface of Ag nanostructures. SERS intensity generated by MB molecules reflects the interaction between the local electric field and their bonds. A power-dependent SERS study in order to reveal the magnitude effect of a local electric field on the vibration behavior of molecular bonds of MB was performed. A theoretical study using finite element (COMSOL Multiphysics) was performed in order to understand the effect of interparticle distance of Ag nanoparticles on the enhancement properties.
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Affiliation(s)
- Chawki Awada
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
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3
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Heterogeneous Nanoplasmonic Amplifiers for Photocatalysis’s Application: A Theoretical Study. Catalysts 2022. [DOI: 10.3390/catal12070771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
The higher cost of Ag and Au and their resonance frequency shift limitation opened the way to find an alternative solution by developing new nanohybrid antenna based on silicon and silicon dioxide coated with metallic nanoparticles. The latter has been recently solicited as a promising configuration for more large-scale plasmonic utilisation. This work reports a multitude of fascinating new phenomenon on LSPR on silicon antenna wires coated with core-shell nanospheres and the studying of the nanoplasmonics amplifiers to control optical and electromagnetic properties of materials. The LSPR modes and their interaction with the silicon nanowires are studied using numerical methods. The suggested configuration offers resonance covering the UV-visible and NIR regions, making them an adaptable addition to the nanoplasmonics toolbox.
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Subramanyam P, Meena B, Biju V, Misawa H, Challapalli S. Emerging materials for plasmon-assisted photoelectrochemical water splitting. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2021.100472] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Czelej K, Colmenares JC, Jabłczyńska K, Ćwieka K, Werner Ł, Gradoń L. Sustainable hydrogen production by plasmonic thermophotocatalysis. Catal Today 2021. [DOI: 10.1016/j.cattod.2021.02.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Huang C, Zhang H. A simple derivation of the shell polarizability formula and investigation of the plasmonic behavior of aluminum nanoshells with the Mie theory. Phys Chem Chem Phys 2021; 23:23501-23507. [PMID: 34542143 DOI: 10.1039/d1cp01699g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we found that the formula of shell polarizability in existing popular monographs is not uniform, which may lead to misuse of this expression in research. To avoid potential misuse, a detailed derivation has been supplemented in this work to clarify this formula. Using the attained correct shell polarizability, we questioned the conclusion of the surface plasmon resonances of aluminum metal nanoshells that could be tuned into the near-infrared region in previous research. More importantly, the new reliable parameters are successfully searched to achieve controllable surface plasmon resonances of aluminum nanoshells, such as tuning into the near-infrared regime, based on the Mie theory.
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Affiliation(s)
- Chuanfu Huang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
| | - Heng Zhang
- School of Physics, Nanjing University, Nanjing, Jiangsu 210093, China
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Awada C, Abdullah MMBA, Traboulsi H, Dab C, Alshoaibi A. SARS-CoV-2 Receptor Binding Domain as a Stable-Potential Target for SARS-CoV-2 Detection by Surface-Enhanced Raman Spectroscopy. SENSORS (BASEL, SWITZERLAND) 2021; 21:4617. [PMID: 34283162 PMCID: PMC8271591 DOI: 10.3390/s21134617] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/02/2021] [Accepted: 07/02/2021] [Indexed: 12/23/2022]
Abstract
In this work, we report a new approach for detecting SARS-CoV-2 RBD protein (RBD) using the surface-enhanced Raman spectroscopy (SERS) technique. The optical enhancement was obtained thanks to the preparation of nanostructured Ag/Au substrates. Fabricated Au/Ag nanostructures were used in the SERS experiment for RBD protein detection. SERS substrates show higher capabilities and sensitivity to detect RBD protein in a short time (3 s) and with very low power. We were able to push the detection limit of proteins to a single protein detection level of 1 pM. The latter is equivalent to 1 fM as a detection limit of viruses. Additionally, we have shown that the SERS technique was useful to figure out the presence of RBD protein on antibody functionalized substrates. In this case, the SERS detection was based on protein-antibody recognition, which led to shifts in the Raman peaks and allowed signal discrimination between RBD and other targets such as Bovine serum albumin (BSA) protein. A perfect agreement between a 3D simulated model based on finite element method and experiment was reported confirming the SERS frequency shift potential for trace proteins detection. Our results could open the way to develop a new prototype based on SERS sensitivity and selectivity for rapid detection at a very low concentration of virus and even at a single protein level.
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Affiliation(s)
- Chawki Awada
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia;
| | - Mohammed Mahfoudh BA Abdullah
- Department of Biological Sciences, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia;
| | - Hassan Traboulsi
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia;
| | - Chahinez Dab
- Département de Chimie, Université de Montréal, Campus de MIL, Montréal, QC H2V 0B3, Canada;
| | - Adil Alshoaibi
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia;
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Du G, Lu Y, Lankanath D, Hou X, Chen F. Theoretical Study on Symmetry-Broken Plasmonic Optical Tweezers for Heterogeneous Noble-Metal-Based Nano-Bowtie Antennas. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:759. [PMID: 33803040 PMCID: PMC8002932 DOI: 10.3390/nano11030759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 02/04/2023]
Abstract
Plasmonic optical tweezers with a symmetry-tunable potential well were investigated based on a heterogeneous model of nano-bowtie antennas made of different noble substances. The typical noble metals Au and Ag are considered as plasmonic supporters for excitation of hybrid plasmonic modes in bowtie dimers. It is proposed that the plasmonic optical trapping force around a quantum dot exhibits symmetry-broken characteristics and becomes increasingly asymmetrical with increasing applied laser electric field. Here, it is explained by the dominant plasmon hybridization of the heterogeneous Au-Ag dimer, in which the plasmon excitations can be inconsistently modified by tuning the applied laser electric field. In the spectrum regime, the wavelength-dependent plasmonic trapping potential exhibits a two-peak structure for the heterogeneous Au-Ag bowtie dimer compared to a single-peak trapping potential of the Au-Au bowtie dimer. In addition, we comprehensively investigated the influence of structural parameter variables on the plasmonic potential well generated from the heterogeneous noble nano-bowtie antenna with respect to the bowtie edge length, edge/tip rounding, bowtie gap, and nanosphere size. This work could be helpful in improving our understanding of wavelength and laser field tunable asymmetric nano-tweezers for flexible and non-uniform nano-trapping applications of particle-sorting, plasmon coloring, SERS imaging, and quantum dot lighting.
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Affiliation(s)
| | | | | | | | - Feng Chen
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (G.D.); (Y.L.); (D.L.); (X.H.)
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Awada C, Dab C, Grimaldi MG, Alshoaibi A, Ruffino F. High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique. Sci Rep 2021; 11:4714. [PMID: 33633214 PMCID: PMC7907086 DOI: 10.1038/s41598-021-84093-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/10/2021] [Indexed: 01/31/2023] Open
Abstract
We report high optical enhancement in Ag/Au alloys and porous gold nanostructures using Surface Enhanced Raman Spectroscopy (SERS) technique. Scanning electron microscopy investigation shows the formation of Ag/Au alloys particles during irradiation of Ag-Au bilayer deposited on FTO (SnO2:F) substrate by laser fluency equal to 0.5 J/cm2 or 1.0 J/cm2 with 12 ns laser pulse duration. The dealloying process of these Au-Ag alloy particles leads to the formation of Au nanoporous particles. The obtained nanostructures were studied with SERS and revealed a promising enhancement factor in porous Au nanostructure and tunability of localized surface plasmon resonance. The highly dense strong hot spots and large specific area in porous structure of gold nanostructures is the origin of the highly enhancement factor observed experimentally and theoretically. A very good agreement between simulation and experimental results was found confirming the potential of Au/Ag alloys and particularly porous gold nanostructure in SERS application.
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Affiliation(s)
- C Awada
- Department of Physics, College of Science, King Faisal University, P.O. Box: 400, Al-Ahsa, 31982, Saudi Arabia.
| | - C Dab
- Département de Chimie, Université de Montréal, Campus MIL, Montréal, QC, H2V 0B3, Canada
| | - M G Grimaldi
- Dipartimento di Fisica e Astronomia "Ettore Majorana"-Università di Catania and MATIS CNR-IMM, via S. Sofia 64, 95123, Catania, Italy
| | - A Alshoaibi
- Department of Physics, College of Science, King Faisal University, P.O. Box: 400, Al-Ahsa, 31982, Saudi Arabia
| | - F Ruffino
- Dipartimento di Fisica e Astronomia "Ettore Majorana"-Università di Catania and MATIS CNR-IMM, via S. Sofia 64, 95123, Catania, Italy.
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Das A, Kumar K, Dhawan A. Periodic arrays of plasmonic crossed-bowtie nanostructures interspaced with plasmonic nanocrosses for highly sensitive LSPR based chemical and biological sensing. RSC Adv 2021; 11:8096-8106. [PMID: 35423295 PMCID: PMC8695081 DOI: 10.1039/d0ra09012c] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 02/07/2021] [Indexed: 11/30/2022] Open
Abstract
In this paper, we present novel localized surface plasmon resonance (LSPR) sensors based on periodic arrays of gold crossed-bowtie nanostructures interspaced with gold nanocross pillars. Finite difference time domain (FDTD) numerical simulations were carried out to model bulk sensors as well as localized sensors based on the plasmonic nanostructures being proposed. The geometrical parameters of the plasmonic nanostructures are varied to obtain the best possible sensing performance in terms of sensitivity and figure of merit. A very high bulk sensitivity of 1753 nm per unit change in refractive index (nm RIU-1), with a figure of merit for bulk sensing (FOMbulk) of 3.65 RIU-1, is obtained for these plasmonic nanostructures. This value of bulk sensitivity is higher in comparison to previously proposed LSPR sensors based on plasmonic nanopillars and nanocrosses. Moreover, the optimized LSPR sensors being proposed in this paper provide maximum sensitivity of localized refractive index sensing of 70 nm/nm with a FOMlocalized of 0.33 nm-1. This sensitivity of localized refractive index sensing is the highest reported thus far in comparison with previously reported LSPR sensors. It is also demonstrated that the operating resonance wavelengths of these LSPR sensors can be controllably tuned for specific applications by changing the dimensions of the plasmonic nanostructures.
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Affiliation(s)
- Abhijit Das
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Kamal Kumar
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Anuj Dhawan
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
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Cao P, Liang M, Wu Y, Li Y, Cheng L. New hybridization coupling mechanism and enhanced sensitivity in a Cu 2-xS@Au nanoparticle dimer. NANOTECHNOLOGY 2020; 31:365501. [PMID: 32443000 DOI: 10.1088/1361-6528/ab95b7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To improve the refractive index sensitivity of a localized surface plasmon resonance (LSPR) sensor, we employ a new interparticle hybridization plasmon coupled resonance in a semiconductor-metal (Cu2-xS@Au) core-shell nanoparticle dimer (SMCSND), where the refractive index sensitivity can be improved by the generation of a tunable dual-band absorption spectrum at visible and near-infrared wavelengths. Owing to two LSPRs in different wavelength regions supported by the metal shell and semiconductor core, for the first time, we theoretically demonstrate that the new interparticle hybridization plasmon coupled mechanism in semiconductor-metal core-shell nanoparticle dimer depends not only on interparticle separation gap, but also on the nanoparticle shell thickness t. Electromagnetic model analysis reveals that there are two plasmon modes (Mode A and Mode C) associated with the interparticle hybridization plasmon coupled resonance, where the Mode C shows high sensitivity and figure of merit (FoM) to changes in the background dielectric medium. The tunability of the induced interparticle hybridization plasmon coupled resonance with different the separation distance and shell thickness can change the sensitivity and FoM of LSPR sensor in the visible to near-infrared region, which has broad application prospects.
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Affiliation(s)
- Pengfei Cao
- School of Information Science and Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
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