1
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Hu J, Zhao F, Ling H, Zhang Y, Liu Q. Single-particle Förster resonance energy transfer from upconversion nanoparticles to organic dyes. NANOSCALE ADVANCES 2024; 6:2945-2953. [PMID: 38817426 PMCID: PMC11134271 DOI: 10.1039/d4na00198b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 04/11/2024] [Indexed: 06/01/2024]
Abstract
Single-particle detection and sensing, powered by Förster resonance energy transfer (FRET), offers precise monitoring of molecular interactions and environmental stimuli at a nanometric resolution. Despite its potential, the widespread use of FRET has been curtailed by the rapid photobleaching of traditional fluorophores. This study presents a robust single-particle FRET platform utilizing upconversion nanoparticles (UCNPs), which stand out for their remarkable photostability, making them superior to conventional organic donors for energy transfer-based assays. Our comprehensive research demonstrates the influence of UCNPs' size, architecture, and dye selection on the efficiency of FRET. We discovered that small particles (∼14 nm) with a Yb3+-enriched outermost shell exhibit a significant boost in FRET efficiency, a benefit not observed in larger particles (∼25 nm). 25 nm UCNPs with an inert NaLuF4 shell demonstrated a comparable level of emission enhancement via FRET as those with a Yb3+-enriched outermost shell. At the single-particle level, these FRET-enhanced UCNPs manifested an upconversion green emission intensity that was 8.3 times greater than that of their unmodified counterparts, while maintaining notable luminescence stability. Our upconversion FRET system opens up new possibilities for developing more effective high-brightness, high-sensitivity single-particle detection, and sensing modalities.
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Affiliation(s)
- Jialing Hu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Fei Zhao
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Huan Ling
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Yunxiang Zhang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Qian Liu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
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2
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Wang Y, Aikens CM. Effects of Nanowire Doping on Plasmon-Enhanced N 2 Dissociation. J Phys Chem A 2024. [PMID: 38703392 DOI: 10.1021/acs.jpca.3c08277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2024]
Abstract
Doping a transition metal element into plasmonic systems can tune the optical properties of the system, which will potentially facilitate the plasmon-enhanced catalytic process. In this study, we applied the linear-response time-dependent density functional theory (LR-TDDFT) method with real-time electron dynamics and mean-field Ehrenfest dynamics methods to computationally investigate the effects of doping silver nanowires on plasmon-enhanced N2 dissociation. We calculated the absorption spectra for different doped systems, applied an external electric field to the system, and performed mean-field Ehrenfest dynamics to examine how plasmonic excitation will affect the N2 activation or dissociation. In addition, we also studied how the transition metal dopant affects the system's electronic structure and potential energy surface.
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Affiliation(s)
- Yuchen Wang
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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3
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Sathyan A, Archontakis E, Spiering AJH, Albertazzi L, Palmans ARA. Effect of Particle Heterogeneity in Catalytic Copper-Containing Single-Chain Polymeric Nanoparticles Revealed by Single-Particle Kinetics. Molecules 2024; 29:1850. [PMID: 38675670 PMCID: PMC11054931 DOI: 10.3390/molecules29081850] [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: 03/22/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Single-chain polymeric nanoparticles (SCPNs) have been extensively explored as a synthetic alternative to enzymes for catalytic applications. However, the inherent structural heterogeneity of SCPNs, arising from the dispersity of the polymer backbone and stochastic incorporation of different monomers as well as catalytic moieties, is expected to lead to variations in catalytic activity between individual particles. To understand the effect of structural heterogeneities on the catalytic performance of SCPNs, techniques are required that permit researchers to directly monitor SCPN activity at the single-polymer level. In this study, we introduce the use of single-molecule fluorescence microscopy to study the kinetics of Cu(I)-containing SCPNs towards depropargylation reactions. We developed Cu(I)-containing SCPNs that exhibit fast kinetics towards depropargylation and Cu-catalyzed azide-alkyne click reactions, making them suitable for single-particle kinetic studies. SCPNs were then immobilized on the surface of glass coverslips and the catalytic reactions were monitored at a single-particle level using total internal reflection fluorescence (TIRF) microscopy. Our studies revealed the interparticle turnover dispersity for Cu(I)-catalyzed depropargylations. In the future, our approach can be extended to different polymer designs which can give insights into the intrinsic heterogeneity of SCPN catalysis and can further aid in the rational development of SCPN-based catalysts.
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Affiliation(s)
- Anjana Sathyan
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; (A.S.); (A.J.H.S.)
| | - Emmanouil Archontakis
- Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; (E.A.); (L.A.)
| | - A. J. H. Spiering
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; (A.S.); (A.J.H.S.)
| | - Lorenzo Albertazzi
- Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; (E.A.); (L.A.)
| | - Anja R. A. Palmans
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; (A.S.); (A.J.H.S.)
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4
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Schmidt K, Riedel T, de los Santos Pereira A, Lynn NS, Dorado Daza DF, Dostalek J. Sandwich Immuno-RCA Assay with Single Molecule Counting Readout: The Importance of Biointerface Design. ACS APPLIED MATERIALS & INTERFACES 2024; 16:17109-17119. [PMID: 38530402 PMCID: PMC11009916 DOI: 10.1021/acsami.3c18304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 03/28/2024]
Abstract
The analysis of low-abundance protein molecules in human serum is reported based on counting of the individual affinity-captured analyte on a solid sensor surface, yielding a readout format similar to digital assays. In this approach, a sandwich immunoassay with rolling circle amplification (RCA) is used for single molecule detection (SMD) through associating the target analyte with spatially distinct bright spots observed by fluorescence microscopy. The unspecific interaction of the target analyte and other immunoassay constituents with the sensor surface is of particular interest in this work, as it ultimately limits the performance of this assay. It is minimized by the design of the respective biointerface and thiol self-assembled monolayer with oligoethylene (OEG) head groups, and a poly[oligo(ethylene glycol) methacrylate] (pHOEGMA) antifouling polymer brush was used for the immobilization of the capture antibody (cAb) on the sensor surface. The assay relying on fluorescent postlabeling of long single-stranded DNA that are grafted from the detection antibody (dAb) by RCA was established with the help of combined surface plasmon resonance and surface plasmon-enhanced fluorescence monitoring of reaction kinetics. These techniques were employed for in situ measurements of conjugating of cAb to the sensor surface, tagging of short single-stranded DNA to dAb, affinity capture of the target analyte from the analyzed liquid sample, and the fluorescence readout of the RCA product. Through mitigation of adsorption of nontarget molecules on the sensor surface by tailoring of the antifouling biointerface, optimizing conjugation chemistry, and by implementing weak Coulombic repelling between dAb and the sensor surface, the limit of detection (LOD) of the assay was substantially improved. For the chosen interleukin-6 biomarker, SMD assay with LOD at a concentration of 4.3 fM was achieved for model (spiked) samples, and validation of the ability of detection of standard human serum samples is demonstrated.
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Affiliation(s)
- Katharina Schmidt
- Laboratory
for Life Sciences and Technology (LiST), Danube Private University, Viktor-Kaplan-Straße 2, 2700 Wiener, Neustadt, Austria
| | - Tomas Riedel
- Institute
of Macromolecular Chemistry, Czech Academy
of Sciences, Heyrovského
nám. 2, Prague 162
00, Czech Republic
| | - Andres de los Santos Pereira
- Institute
of Macromolecular Chemistry, Czech Academy
of Sciences, Heyrovského
nám. 2, Prague 162
00, Czech Republic
| | - N. Scott Lynn
- FZU-Institute
of Physics, Czech Academy of Sciences, Na Slovance 2, Prague 182 21, Czech Republic
| | - Diego Fernando Dorado Daza
- Institute
of Macromolecular Chemistry, Czech Academy
of Sciences, Heyrovského
nám. 2, Prague 162
00, Czech Republic
| | - Jakub Dostalek
- Laboratory
for Life Sciences and Technology (LiST), Danube Private University, Viktor-Kaplan-Straße 2, 2700 Wiener, Neustadt, Austria
- FZU-Institute
of Physics, Czech Academy of Sciences, Na Slovance 2, Prague 182 21, Czech Republic
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5
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Juma MW, Birech Z, Mwenze NM, Ondieki AM, Maaza M, Mokhotjwa SD. Localized surface plasmon resonance sensing of Trenbolone acetate dopant using silver nanoparticles. Sci Rep 2024; 14:5721. [PMID: 38459089 PMCID: PMC10923944 DOI: 10.1038/s41598-024-56456-w] [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: 07/24/2023] [Accepted: 03/06/2024] [Indexed: 03/10/2024] Open
Abstract
In this work, localized surface plasmon resonance (LSPR) sensing as applicable in the detection of Trenbolone acetate dopant is demonstrated. We show that the LSPR of the Trenbolone acetate/silver nanoparticle (Tren Ac/AgNPs) complex is sensitive to changes in the adsorbent concentration. The results show an average redshift of + 18 nm in the LSPR peak with variations in intensity and broadening behavior of the LSPR band of the Tren Ac/AgNPs complex. AgNPs were synthesized using laser ablation in liquid (LAL) technique with water as the solvent. UV-Vis spectroscopy was used for absorbance measurements and particle size and morphology were monitored using scanning electron microscopy (SEM). The aggregation behavior of the Tren Ac/AgNPs complex was monitored using energy-dispersive X-ray spectroscopy (EDS). Molecular Electrostatic Potential (MEP) and the HOMO-LUMO orbitals of the optimized Trenbolone acetate structure were obtained using Density Function Theory (DFT). The molecule was optimized at the B3LYP level of theory using the 6-311 basis set carried out using the Gaussian 09 software package. The results showed that O2- is Trenbolone acetate's active site that would interact with Ag+ to form a complex that would influence the plasmon behavior. The results presented in this work demonstrate the feasibility of LSPR for anabolic androgenic steroid detection.
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Affiliation(s)
- Moses Wabwile Juma
- UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology (U2ACN2), College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa.
- NANOAFNET, iThemba LABS-National Research Foundation of South Africa, 1 Old Faure Road, Cape Town, 7129, Western Cape, South Africa.
- Department of Physics, University of South Africa, Muckleneuk Ridge, Pretoria, 0001, South Africa.
- Laser Physics and Spectroscopy Research Group, Department of Physics, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya.
| | - Zephania Birech
- Laser Physics and Spectroscopy Research Group, Department of Physics, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya
| | - Nancy Mwikali Mwenze
- UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology (U2ACN2), College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa
- NANOAFNET, iThemba LABS-National Research Foundation of South Africa, 1 Old Faure Road, Cape Town, 7129, Western Cape, South Africa
- Department of Physics, University of South Africa, Muckleneuk Ridge, Pretoria, 0001, South Africa
- Laser Physics and Spectroscopy Research Group, Department of Physics, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya
| | - Annah Moraa Ondieki
- Laser Physics and Spectroscopy Research Group, Department of Physics, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya
| | - Malik Maaza
- UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology (U2ACN2), College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa
- NANOAFNET, iThemba LABS-National Research Foundation of South Africa, 1 Old Faure Road, Cape Town, 7129, Western Cape, South Africa
- Department of Physics, University of South Africa, Muckleneuk Ridge, Pretoria, 0001, South Africa
| | - Simon Dhlamini Mokhotjwa
- Department of Physics, University of South Africa, Muckleneuk Ridge, Pretoria, 0001, South Africa
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6
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Tomeček D, Moberg HK, Nilsson S, Theodoridis A, Darmadi I, Midtvedt D, Volpe G, Andersson O, Langhammer C. Neural network enabled nanoplasmonic hydrogen sensors with 100 ppm limit of detection in humid air. Nat Commun 2024; 15:1208. [PMID: 38332035 PMCID: PMC10853499 DOI: 10.1038/s41467-024-45484-9] [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: 07/04/2023] [Accepted: 01/25/2024] [Indexed: 02/10/2024] Open
Abstract
Environmental humidity variations are ubiquitous and high humidity characterizes fuel cell and electrolyzer operation conditions. Since hydrogen-air mixtures are highly flammable, humidity tolerant H2 sensors are important from safety and process monitoring perspectives. Here, we report an optical nanoplasmonic hydrogen sensor operated at elevated temperature that combined with Deep Dense Neural Network or Transformer data treatment involving the entire spectral response of the sensor enables a 100 ppm H2 limit of detection in synthetic air at 80% relative humidity. This significantly exceeds the <1000 ppm US Department of Energy performance target. Furthermore, the sensors pass the ISO 26142:2010 stability requirement in 80% relative humidity in air down to 0.06% H2 and show no signs of performance loss after 140 h continuous operation. Our results thus demonstrate the potential of plasmonic hydrogen sensors for use in high humidity and how neural-network-based data treatment can significantly boost their performance.
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Affiliation(s)
- David Tomeček
- Department of Physics, Chalmers University of Technology, 412 96, Göteborg, Sweden
| | - Henrik Klein Moberg
- Department of Physics, Chalmers University of Technology, 412 96, Göteborg, Sweden
| | - Sara Nilsson
- Department of Physics, Chalmers University of Technology, 412 96, Göteborg, Sweden
| | | | - Iwan Darmadi
- Department of Physics, Chalmers University of Technology, 412 96, Göteborg, Sweden
| | - Daniel Midtvedt
- Department of Physics, University of Gothenburg, 412 96, Göteborg, Sweden
| | - Giovanni Volpe
- Department of Physics, University of Gothenburg, 412 96, Göteborg, Sweden
| | - Olof Andersson
- Insplorion AB, Arvid Wallgrens Backe 20, 413 46, Göteborg, Sweden
| | - Christoph Langhammer
- Department of Physics, Chalmers University of Technology, 412 96, Göteborg, Sweden.
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7
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Zhang C, Zheng K, Li C, Zhang R, Zhu Y, Xia L, Ma Y, Wyss HM, Cheng X, He S. Single-Molecule Protein Analysis by Centrifugal Droplet Immuno-PCR with Magnetic Nanoparticles. Anal Chem 2024; 96:1872-1879. [PMID: 38225884 DOI: 10.1021/acs.analchem.3c03724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Detecting proteins in ultralow concentrations in complex media is important for many applications but often relies on complicated techniques. Herein, a single-molecule protein analyzer with the potential for high-throughput applications is reported. Gold-coated magnetic nanoparticles with DNA-labeled antibodies were used for target recognition and separation. The immunocomplex was loaded into microdroplets generated with centrifugation. Immuno-PCR amplification of the DNA enabled the quantification of proteins at the level of single molecules. As an example, ultrasensitive detection of α-synuclein, a biomarker for neurodegenerative diseases, is achieved. The limit of detection was determined to be ∼50 aM in buffer and ∼170 aM in serum. The method exhibited high specificity and could be used to analyze post-translational modifications such as protein phosphorylation. This study will inspire wider studies on single-molecule protein detection, especially in disease diagnostics, biomarker discovery, and drug development.
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Affiliation(s)
- Chuan Zhang
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
| | - Kaixin Zheng
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
| | - Chi Li
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
- ZJU-TU/e Joint Research Institute of Design, Optoelectronic and Sensing, Hangzhou 310052, China
- Microsystems Research Section, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven 5600MB, The Netherlands
| | - Ranran Zhang
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
| | - Yicheng Zhu
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
| | - Linxiao Xia
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
| | - Yicheng Ma
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
| | - Hans M Wyss
- ZJU-TU/e Joint Research Institute of Design, Optoelectronic and Sensing, Hangzhou 310052, China
- Microsystems Research Section, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven 5600MB, The Netherlands
| | - Xiaoyu Cheng
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
- Ningbo Research Institute, Ningbo 310050, China
- ZJU-TU/e Joint Research Institute of Design, Optoelectronic and Sensing, Hangzhou 310052, China
| | - Sailing He
- National Engineering Research Center for Optical Instruments, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310052, China
- Ningbo Research Institute, Ningbo 310050, China
- ZJU-TU/e Joint Research Institute of Design, Optoelectronic and Sensing, Hangzhou 310052, China
- Department of Electromagnetic Engineering, School of Electrical Engineering, Royal Institute of Technology, Stockholm S-100 44, Sweden
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8
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Langevin D, Verlhac C, Jaeck J, Abou-Hamdan L, Taupeau E, Fix B, Bardou N, Dupuis C, De Wilde Y, Haïdar R, Bouchon P. Experimental Investigation of the Thermal Emission Cross Section of Nanoresonators Using Hierarchical Poisson-Disk Distributions. PHYSICAL REVIEW LETTERS 2024; 132:043801. [PMID: 38335346 DOI: 10.1103/physrevlett.132.043801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 12/08/2023] [Indexed: 02/12/2024]
Abstract
Effective cross sections of nano-objects are fundamental properties that determine their ability to interact with light. However, measuring them for individual resonators directly and quantitatively remains challenging, particularly because of the very low signals involved. Here, we experimentally measure the thermal emission cross section of metal-insulator-metal nanoresonators using a stealthy hyperuniform distribution based on a hierarchical Poisson-disk algorithm. In such distributions, there are no long-range interactions between antennas, and we show that the light emitted by such metasurfaces behaves as the sum of cross sections of independent nanoantennas, enabling direct retrieval of the single resonator contribution. The emission cross section at resonance is found to be on the order of λ_{0}^{2}/3, a value that is nearly 3 times larger than the theoretical maximal absorption cross section of a single particle, but remains smaller than the maximal extinction cross section. This measurement technique can be generalized to any single resonator cross section, and we also apply it to a lossy dielectric layer.
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Affiliation(s)
- Denis Langevin
- DOTA, ONERA, Université Paris-Saclay, F-91123 Palaiseau, France
| | - Clément Verlhac
- DOTA, ONERA, Université Paris-Saclay, F-91123 Palaiseau, France
| | - Julien Jaeck
- DOTA, ONERA, Université Paris-Saclay, F-91123 Palaiseau, France
| | | | - Eva Taupeau
- DOTA, ONERA, Université Paris-Saclay, F-91123 Palaiseau, France
| | - Baptiste Fix
- DOTA, ONERA, Université Paris-Saclay, F-91123 Palaiseau, France
| | - Nathalie Bardou
- Center for Nanosciences and Nanotechnology (C2N) - CNRS, Université Paris-Saclay, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Christophe Dupuis
- Center for Nanosciences and Nanotechnology (C2N) - CNRS, Université Paris-Saclay, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Yannick De Wilde
- Institut Langevin, ESPCI Paris, PSL University, CNRS, 1 rue Jussieu, F-75005 Paris, France
| | - Riad Haïdar
- DOTA, ONERA, Université Paris-Saclay, F-91123 Palaiseau, France
| | - Patrick Bouchon
- DOTA, ONERA, Université Paris-Saclay, F-91123 Palaiseau, France
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9
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Ganesh KM, Bhaskar S, Cheerala VSK, Battampara P, Reddy R, Neelakantan SC, Reddy N, Ramamurthy SS. Review of Gold Nanoparticles in Surface Plasmon-Coupled Emission Technology: Effect of Shape, Hollow Nanostructures, Nano-Assembly, Metal-Dielectric and Heterometallic Nanohybrids. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:111. [PMID: 38202566 PMCID: PMC10780701 DOI: 10.3390/nano14010111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/23/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
Point-of-care (POC) diagnostic platforms are globally employed in modern smart technologies to detect events or changes in the analyte concentration and provide qualitative and quantitative information in biosensing. Surface plasmon-coupled emission (SPCE) technology has emerged as an effective POC diagnostic tool for developing robust biosensing frameworks. The simplicity, robustness and relevance of the technology has attracted researchers in physical, chemical and biological milieu on account of its unique attributes such as high specificity, sensitivity, low background noise, highly polarized, sharply directional, excellent spectral resolution capabilities. In the past decade, numerous nano-fabrication methods have been developed for augmenting the performance of the conventional SPCE technology. Among them the utility of plasmonic gold nanoparticles (AuNPs) has enabled the demonstration of plethora of reliable biosensing platforms. Here, we review the nano-engineering and biosensing applications of AuNPs based on the shape, hollow morphology, metal-dielectric, nano-assembly and heterometallic nanohybrids under optical as well as biosensing competencies. The current review emphasizes the recent past and evaluates the latest advancements in the field to comprehend the futuristic scope and perspectives of exploiting Au nano-antennas for plasmonic hotspot generation in SPCE technology.
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Affiliation(s)
- Kalathur Mohan Ganesh
- STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Sri Sathya Sai District, Puttaparthi 515134, India;
| | - Seemesh Bhaskar
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory (HMNTL), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Vijay Sai Krishna Cheerala
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Brindavan Campus, Kadugodi, Bengaluru 560067, India; (V.S.K.C.); (S.C.N.)
| | - Prajwal Battampara
- Center for Incubation Innovation Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru 560109, India; (P.B.); (R.R.); (N.R.)
| | - Roopa Reddy
- Center for Incubation Innovation Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru 560109, India; (P.B.); (R.R.); (N.R.)
| | - Sundaresan Chittor Neelakantan
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Brindavan Campus, Kadugodi, Bengaluru 560067, India; (V.S.K.C.); (S.C.N.)
| | - Narendra Reddy
- Center for Incubation Innovation Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru 560109, India; (P.B.); (R.R.); (N.R.)
| | - Sai Sathish Ramamurthy
- STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Sri Sathya Sai District, Puttaparthi 515134, India;
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10
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Altenburger B, Andersson C, Levin S, Westerlund F, Fritzsche J, Langhammer C. Label-Free Imaging of Catalytic H 2O 2 Decomposition on Single Colloidal Pt Nanoparticles Using Nanofluidic Scattering Microscopy. ACS NANO 2023; 17:21030-21043. [PMID: 37847543 PMCID: PMC10655234 DOI: 10.1021/acsnano.3c03977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 10/09/2023] [Indexed: 10/18/2023]
Abstract
Single-particle catalysis aims at determining factors that dictate the nanoparticle activity and selectivity. Existing methods often use fluorescent model reactions at low reactant concentrations, operate at low pressures, or rely on plasmonic enhancement effects. Hence, methods to measure single-nanoparticle activity under technically relevant conditions and without fluorescence or other enhancement mechanisms are still lacking. Here, we introduce nanofluidic scattering microscopy of catalytic reactions on single colloidal nanoparticles trapped inside nanofluidic channels to fill this gap. By detecting minuscule refractive index changes in a liquid flushed trough a nanochannel, we demonstrate that local H2O2 concentration changes in water can be accurately measured. Applying this principle, we analyze the H2O2 concentration profiles adjacent to single colloidal Pt nanoparticles during catalytic H2O2 decomposition into O2 and H2O and derive the particles' individual turnover frequencies from the growth rate of the O2 gas bubbles formed in their respective nanochannel during reaction.
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Affiliation(s)
- Björn Altenburger
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Carl Andersson
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Sune Levin
- Department
of Life Sciences, Chalmers University of
Technology, SE-412 96 Gothenburg, Sweden
| | - Fredrik Westerlund
- Department
of Life Sciences, Chalmers University of
Technology, SE-412 96 Gothenburg, Sweden
| | - Joachim Fritzsche
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Christoph Langhammer
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
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11
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Zhang P, Zhan T, Xue S, Yang H. Microlens-Assisted Light-Scattering Imaging of Plasmonic Nanoparticles at the Single Particle Level. BIOSENSORS 2023; 13:871. [PMID: 37754105 PMCID: PMC10526809 DOI: 10.3390/bios13090871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/30/2023] [Accepted: 09/02/2023] [Indexed: 09/28/2023]
Abstract
We present a microlens-assisted imaging approach to record the scattering light of plasmonic nanoparticles at the single particle level. The microlens can significantly enhance the backscattering of visible light from individual plasmonic nanoparticles by several dozen folds, and single gold nanoparticles with a diameter as low as 60 nm can be imaged under a conventional optical microscope. This can benefit from a significant increase in the scattering intensity afforded by the microlens, meaning that the imaging of gold nanoparticles at a high temporal resolution (up to 5000 Hz) can be achieved, which is fast enough to record single particle adhesion events on the substrate. This research presents a fast and efficient means of acquiring scattering light from plasmonic nanoparticles, which has great potential to develop plasmonic nanoparticle-based biosensors and investigate a wide range of plasmonic nanoparticle-based fast interaction processes.
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Affiliation(s)
| | | | | | - Hui Yang
- Bionic and Intelligence Sensing Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518052, China; (P.Z.); (T.Z.)
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12
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Calvo R, Pini V, Thon A, Saad A, Salvador-Matar A, Manso Silván M, Ahumada Ó. Amplitude-Resolved Single Particle Spectrophotometry: A Robust Tool for High-Throughput Size Characterization of Plasmonic Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2401. [PMID: 37686909 PMCID: PMC10490240 DOI: 10.3390/nano13172401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/16/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023]
Abstract
Plasmonic nanoparticles have a wide range of applications in science and industry. Despite the numerous synthesis methods reported in the literature over the last decades, achieving precise control over the size and shape of large nanoparticle populations remains a challenge. Since variations in size and shape significantly affect the plasmonic properties of nanoparticles, accurate metrological techniques to characterize their morphological features are essential. Here, we present a novel spectrophotometric method, called Amplitude-Resolved Single Particle Spectrophotometry, that can measure the individual sizes of thousands of particles with nanometric accuracy in just a few minutes. This new method, based on the measurement of the scattering amplitude of each nanoparticle, overcomes some of the limitations observed in previous works and theoretically allows the characterization of nanoparticles of any size with a simple extra calibration step. As proof of concept, we characterized thousands of spherical nanoparticles of different sizes. This new method shows excellent accuracy, with less than a 3% discrepancy in direct comparison with transmission electron microscopy. Although the effectiveness of this method has been demonstrated with spherical nanoparticles, its real strength lies in its adaptability to more complex geometries by using an alternative analytical method to the one described here.
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Affiliation(s)
- Rodrigo Calvo
- Mecwins S.A., Ronda de Poniente, 15 2°D, Tres Cantos, 28760 Madrid, Spain
- Departamento de Física Aplicada, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Valerio Pini
- Mecwins S.A., Ronda de Poniente, 15 2°D, Tres Cantos, 28760 Madrid, Spain
| | - Andreas Thon
- Mecwins S.A., Ronda de Poniente, 15 2°D, Tres Cantos, 28760 Madrid, Spain
| | - Asis Saad
- Mecwins S.A., Ronda de Poniente, 15 2°D, Tres Cantos, 28760 Madrid, Spain
| | | | - Miguel Manso Silván
- Departamento de Física Aplicada, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
- Centro de Microanálisis de Materiales, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Óscar Ahumada
- Mecwins S.A., Ronda de Poniente, 15 2°D, Tres Cantos, 28760 Madrid, Spain
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13
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Lima RRM, Lima JVA, Ribeiro JFF, Nascimento JB, Oliveira WF, Cabral Filho PE, Fontes A. Emerging biomedical tools for biomarkers detection and diagnostics in schistosomiasis. Talanta 2023; 265:124900. [PMID: 37423177 DOI: 10.1016/j.talanta.2023.124900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/21/2023] [Accepted: 07/01/2023] [Indexed: 07/11/2023]
Abstract
Schistosomiasis is a neglected disease that strikes many people from tropical and subtropical countries where there are not satisfactory sanitation and wide access to clean water. Schistosoma spp., the causative agents of schistosomiasis, exhibit a quite complex life cycle that involves two hosts (humans and snails, respectively, the definitive and the intermediate), and five evolutive forms: cercariae (human infective form), schistosomula, adult worms, eggs, and miracidia. The techniques to diagnose schistosomiasis still have various limitations, mainly regarding low-intensity infections. Although various mechanisms associated with schistosomiasis have already been evidenced, there is still a need to fulfill the comprehension of this disease, especially to prospect for novel biomarkers to improve its diagnosis. Developing methods with more sensitivity and portability to detect the infection is valuable to reach schistosomiasis control. In this context, this review has gathered information not only on schistosomiasis biomarkers but also on emerging optical and electrochemical tools proposed in selected studies from about the last ten years. Aspects of the assays regarding the sensibility, specificity, and time needed for detecting diverse biomarkers are described. We hope this review can guide future developments in the field of schistosomiasis, contributing to improving its diagnosis and eradication.
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Affiliation(s)
- Rennan R M Lima
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - João V A Lima
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Jéssika F F Ribeiro
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Júlio B Nascimento
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Weslley F Oliveira
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Paulo E Cabral Filho
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil.
| | - Adriana Fontes
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil.
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14
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Velasco L, Ouyang T, Reinhard BM. Two-Color iSCAT Imaging of Ag Nanoparticles Resolves Size and Ambient Refractive Index Changes. NANO LETTERS 2023; 23:4642-4647. [PMID: 37159328 PMCID: PMC10752631 DOI: 10.1021/acs.nanolett.3c01306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The ability to discern noble metal nanoparticles (NPs) with different sizes and in ambient media with different refractive indices has important applications in imaging and sensing. Here a two-color (405 nm, 445 nm) interferometric scattering (iSCAT) detection scheme is applied to characterize the wavelength-dependent iSCAT contrast of Ag NPs with nominal diameters of 10, 20, 40, and 60 nm and to distinguish between NPs of different sizes. The iSCAT contrast also depends on the ambient refractive index and the relative iSCAT contrast on both channels revealed a spectral red-shift for 40 and 60 nm Ag NPs when the ambient refractive index was increased from n = 1.3892 to n = 1.4328. With the selected wavelength channels, the spectral resolution of the two-color imaging strategy was, however, insufficient to resolve spectral shifts induced by refractive index changes for 10 and 20 nm Ag NPs.
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Affiliation(s)
- Leslie Velasco
- Department of Chemistry and The Photonics Center, Boston University, Boston, MA 02215, United States
| | - Tianhong Ouyang
- Department of Chemistry and The Photonics Center, Boston University, Boston, MA 02215, United States
| | - Björn M. Reinhard
- Department of Chemistry and The Photonics Center, Boston University, Boston, MA 02215, United States
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15
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Ye W. Multiple solution solving in plasmon sensing by deep learning: determination of layer refractive index and thickness in one experiment: comment. OPTICS LETTERS 2023; 48:2659. [PMID: 37186733 DOI: 10.1364/ol.480746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
In a recent Letter [Opt. Lett.46, 5667 (2021)10.1364/OL.444442], Du et al. proposed a deep learning method for determining the refractive index (n) and thickness (d) of the surface layer on nanoparticles in a single-particle plasmon sensing experiment. This comment highlights the methodological issues arising in that Letter.
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16
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Bennett D, Chen X, Walker GJ, Stelzer-Braid S, Rawlinson WD, Hibbert DB, Tilley RD, Gooding JJ. Machine Learning Color Feature Analysis of a High Throughput Nanoparticle Conjugate Sensing Assay. Anal Chem 2023; 95:6550-6558. [PMID: 37036670 DOI: 10.1021/acs.analchem.2c05292] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
Plasmonic nanoparticles are finding applications within the single molecule sensing field in a "dimer" format, where interaction of the target with hairpin DNA causes a decrease in the interparticle distance, leading to a localized surface plasmon resonance shift. While this shift may be detected using spectroscopy, achieving statistical relevance requires the measurement of thousands of nanoparticle dimers and the timescales required for spectroscopic analysis are incompatible with point-of-care devices. However, using dark-field imaging of the dimer structures, simultaneous digital analysis of the plasmonic resonance shift after target interaction of thousands of dimer structures may be achieved in minutes. The main challenge of this digital analysis on the single-molecule scale was the occurrence of false signals caused by non-specifically bound clusters of nanoparticles. This effect may be reduced by digitally separating dimers from other nanoconjugate types. Variation in image intensity was observed to have a discernible impact on the color analysis of the nanoconjugate constructs and thus the accuracy of the digital separation. Color spaces wherein intensity may be uncoupled from the color information (hue, saturation, and value (HSV) and luminance, a* vector, and b* vector (LAB) were contrasted to a color space which cannot uncouple intensity (RGB) to train a classifier algorithm. Each classifier algorithm was validated to determine which color space produced the most accurate digital separation of the nanoconjugate types. The LAB-based learning classifier demonstrated the highest accuracy for digitally separating nanoparticles. Using this classifier, nanoparticle conjugates were monitored for their plasmonic color shift after interaction with a synthetic RNA target, resulting in a platform with a highly accurate yes/no response with a true positive rate of 88% and a true negative rate of 100%. The sensor response of tested single stranded RNA (ssRNA) samples was well above control responses for target concentrations in the range of 10 aM-1 pM.
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Affiliation(s)
- Danielle Bennett
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
- Australian Centre for Nanomedicine, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Xueqian Chen
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
- Australian Centre for Nanomedicine, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Gregory J Walker
- The Virology Research Laboratory, The University of New South Wales, The Prince of Wales Hospital, Sydney, New South Wales 2052, Australia
| | - Sacha Stelzer-Braid
- The Virology Research Laboratory, The University of New South Wales, The Prince of Wales Hospital, Sydney, New South Wales 2052, Australia
| | - William D Rawlinson
- The Virology Research Laboratory, The University of New South Wales, The Prince of Wales Hospital, Sydney, New South Wales 2052, Australia
| | - D Brynn Hibbert
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Richard D Tilley
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
- Electron Microscope Unit, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - J Justin Gooding
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
- Australian Centre for Nanomedicine, The University of New South Wales, Sydney, New South Wales 2052, Australia
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17
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Zhu J, Zhao X, Mao J, Na N, Ouyang J. Single-Molecule Evaluation of the SARS-CoV-2 Nucleocapsid Protein Using Gold Particle-in-a-Frame Nanostructures Enhanced Fluorescent Assay. Anal Chem 2023; 95:5267-5274. [PMID: 36912606 PMCID: PMC10022750 DOI: 10.1021/acs.analchem.2c05191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 03/01/2023] [Indexed: 03/14/2023]
Abstract
Ultrasensitive evaluation of low-abundance analytes, particularly with limits approaching a single molecule, is a key challenge in the design of an assay for profiling severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen. Herein, we report an aptamer claw strategy for directly evaluating the SARS-CoV-2 antigen based on gold particle-in-a-frame nanostructures (Au PIAFs). Au PIAF was used as a metal-enhanced fluorescence material. The assay integrated with a microplate reader achieved a sensitivity of 44 fg·mL-1 in under 3 min and accurately detected the SARS-CoV-2 nucleocapsid protein (N protein) in human saliva samples. When our assay is combined with a single-molecule counting platform, the limit of detection can be as low as 0.84 ag·mL-1. This rapid and ultrasensitive assay holds promise as a tool for screening SARS-CoV-2 and other contagious viruses.
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Affiliation(s)
- Jiale Zhu
- Key Laboratory of Theoretical and Computational
Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal
University, Beijing 100875, China
| | - Xuan Zhao
- Key Laboratory of Theoretical and Computational
Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal
University, Beijing 100875, China
| | - Jinpeng Mao
- Department of Chemistry, Tsinghua
University, Beijing 100084, China
| | - Na Na
- Key Laboratory of Theoretical and Computational
Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal
University, Beijing 100875, China
| | - Jin Ouyang
- Key Laboratory of Theoretical and Computational
Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal
University, Beijing 100875, China
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18
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Zhou X, Zheng B. Surface modification for improving immunoassay sensitivity. LAB ON A CHIP 2023; 23:1151-1168. [PMID: 36636910 DOI: 10.1039/d2lc00811d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Immunoassays are widely performed in many fields such as biomarker discovery, proteomics, drug development, and clinical diagnosis. There is a growing need for high sensitivity of immunoassays to detect low abundance analytes. As a result, great effort has been made to improve the quality of surfaces, on which the immunoassay is performed. In this review article, we summarize the recent progress in surface modification strategies for improving the sensitivity of immunoassays. The surface modification strategies can be categorized into two groups: antifouling coatings to reduce background noise and nanostructured surfaces to amplify the signals. The first part of the review summarizes the common antifouling coating techniques to prevent nonspecific binding and reduce background noise. The techniques include hydrophilic polymer based self-assembled monomers, polymer brushes, and surface attached hydrogels, and omniphobicity based perfluorinated surfaces. In the second part, some common nanostructured surfaces to amplify the specific detection signals are introduced, including nanoparticle functionalized surfaces, two dimensional (2D) nanoarrays, and 2D nanomaterial coatings. The third part discusses the surface modification techniques for digital immunoassays. In the end, the challenges and the future perspectives of the surface modification techniques for immunoassays are presented.
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Affiliation(s)
- Xiaohu Zhou
- Institute for Cell Analysis, Shenzhen Bay Laboratory, Shenzhen 518132, China.
| | - Bo Zheng
- Institute for Cell Analysis, Shenzhen Bay Laboratory, Shenzhen 518132, China.
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19
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Liang L, Qin F, Wang S, Wu J, Li R, Wang Z, Ren M, Liu D, Wang D, Astruc D. Overview of the materials design and sensing strategies of nanopore devices. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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20
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Chikkaraddy R, Huang J, Kos D, Elliott E, Kamp M, Guo C, Baumberg JJ, de Nijs B. Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes. ACS PHOTONICS 2023; 10:493-499. [PMID: 36820326 PMCID: PMC9936626 DOI: 10.1021/acsphotonics.2c01603] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Indexed: 06/18/2023]
Abstract
Plasmonic nanoantennas can focus light at nanometer length scales providing intense field enhancements. For the tightest optical confinements (0.5-5 nm) achieved in plasmonic gaps, the gap spacing, refractive index, and facet width play a dominant role in determining the optical properties making tuning through antenna shape challenging. We show here that controlling the surrounding refractive index instead allows both efficient frequency tuning and enhanced in-/output coupling through retardation matching as this allows dark modes to become optically active, improving widespread functionalities.
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Affiliation(s)
- Rohit Chikkaraddy
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Junyang Huang
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Dean Kos
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Eoin Elliott
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Marlous Kamp
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Chenyang Guo
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Jeremy J. Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Bart de Nijs
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
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21
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Zhu P, Papadimitriou VA, van Dongen JE, Cordeiro J, Neeleman Y, Santoso A, Chen S, Eijkel JC, Peng H, Segerink LI, Rwei AY. An optical aptasensor for real-time quantification of endotoxin: From ensemble to single-molecule resolution. SCIENCE ADVANCES 2023; 9:eadf5509. [PMID: 36753543 PMCID: PMC9908015 DOI: 10.1126/sciadv.adf5509] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/09/2023] [Indexed: 06/18/2023]
Abstract
Endotoxin is a deadly pyrogen, rendering it crucial to monitor with high accuracy and efficiency. However, current endotoxin detection relies on multistep processes that are labor-intensive, time-consuming, and unsustainable. Here, we report an aptamer-based biosensor for the real-time optical detection of endotoxin. The endotoxin sensor exploits the distance-dependent scattering of gold nanoparticles (AuNPs) coupled to a gold nanofilm. This is enabled by the conformational changes of an endotoxin-specific aptamer upon target binding. The sensor can be used in an ensemble mode and single-particle mode under dark-field illumination. In the ensemble mode, the sensor is coupled with a microspectrometer and exhibits high specificity, reliability (i.e., linear concentration to signal profile in logarithmic scale), and reusability for repeated endotoxin measurements. Individual endotoxins can be detected by monitoring the color of single AuNPs via a color camera, achieving single-molecule resolution. This platform can potentially advance endotoxin detection to safeguard medical, food, and pharmaceutical products.
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Affiliation(s)
- Pancheng Zhu
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, Netherlands
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China
| | | | - Jeanne E. van Dongen
- BIOS Lab on a Chip Group, MESA+ Institute for Nanotechnology, Technical Medical Centre, Max Planck Institute for Complex Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | - Julia Cordeiro
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, Netherlands
| | - Yannick Neeleman
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, Netherlands
| | - Albert Santoso
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, Netherlands
| | - Shuyi Chen
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, Netherlands
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, 10608 Taipei, Taiwan
- Research and Development Center for Smart Textile Technology, National Taipei University of Technology, 10608 Taipei, Taiwan
| | - Jan C. T. Eijkel
- BIOS Lab on a Chip Group, MESA+ Institute for Nanotechnology, Technical Medical Centre, Max Planck Institute for Complex Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | - Hanmin Peng
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China
| | - Loes I. Segerink
- BIOS Lab on a Chip Group, MESA+ Institute for Nanotechnology, Technical Medical Centre, Max Planck Institute for Complex Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | - Alina Y. Rwei
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, Netherlands
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22
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Kochylas I, Dimitriou A, Apostolaki MA, Skoulikidou MC, Likodimos V, Gardelis S, Papanikolaou N. Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16041386. [PMID: 36837016 PMCID: PMC9963757 DOI: 10.3390/ma16041386] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 05/17/2023]
Abstract
In this study, we developed active substrates consisting of Ag-decorated silicon nanowires on a Si substrate using a single-step Metal Assisted Chemical Etching (MACE) process, and evaluated their performance in the identification of low concentrations of Rhodamine 6G using surface-enhanced photoluminescence spectroscopy. Different structures with Ag-aggregates as well as Ag-dendrites were fabricated and studied depending on the etching parameters. Moreover, the addition of Au nanoparticles by simple drop-casting on the MACE-treated surfaces can enhance the photoluminescence significantly, and the structures have shown a Limit of Detection of Rhodamine 6G down to 10-12 M for the case of the Ag-dendrites enriched with Au nanoparticles.
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Affiliation(s)
- Ioannis Kochylas
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
| | - Anastasios Dimitriou
- Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece
| | - Maria-Athina Apostolaki
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
| | | | - Vlassios Likodimos
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
| | - Spiros Gardelis
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
| | - Nikolaos Papanikolaou
- Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece
- Correspondence:
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23
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Riccardi M, Martin OJF. Electromagnetic Forces and Torques: From Dielectrophoresis to Optical Tweezers. Chem Rev 2023; 123:1680-1711. [PMID: 36719985 PMCID: PMC9951227 DOI: 10.1021/acs.chemrev.2c00576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Indexed: 02/02/2023]
Abstract
Electromagnetic forces and torques enable many key technologies, including optical tweezers or dielectrophoresis. Interestingly, both techniques rely on the same physical process: the interaction of an oscillating electric field with a particle of matter. This work provides a unified framework to understand this interaction both when considering fields oscillating at low frequencies─dielectrophoresis─and high frequencies─optical tweezers. We draw useful parallels between these two techniques, discuss the different and often unstated assumptions they are based upon, and illustrate key applications in the fields of physical and analytical chemistry, biosensing, and colloidal science.
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Affiliation(s)
- Marco Riccardi
- Nanophotonics and Metrology Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), EPFL-STI-NAM, Station 11, CH-1015Lausanne, Switzerland
| | - Olivier J. F. Martin
- Nanophotonics and Metrology Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), EPFL-STI-NAM, Station 11, CH-1015Lausanne, Switzerland
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24
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Searles EK, Gomez E, Lee S, Ostovar B, Link S, Landes CF. Single-Particle Photoluminescence and Dark-Field Scattering during Charge Density Tuning. J Phys Chem Lett 2023; 14:318-325. [PMID: 36603176 DOI: 10.1021/acs.jpclett.2c03566] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Single-particle spectroelectrochemistry provides optical insight into understanding physical and chemical changes occurring on the nanoscale. While changes in dark-field scattering during electrochemical charging are well understood, changes to the photoluminescence of plasmonic nanoparticles under similar conditions are less studied. Here, we use correlated single-particle photoluminescence and dark-field scattering to compare their plasmon modulation at applied potentials. We find that changes in the emission of a single gold nanorod during charge density tuning of intraband photoluminescence can be attributed to changes in the Purcell factor and absorption cross section. Finally, modulation of interband photoluminescence provides an additional constructive observable, giving promise for establishing dual channel sensing in spectroelectrochemical measurements.
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Affiliation(s)
- Emily K Searles
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas77005, United States
| | - Eric Gomez
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas77005, United States
| | - Stephen Lee
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas77005, United States
| | - Behnaz Ostovar
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas77005, United States
| | - Stephan Link
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas77005, United States
- Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas77005, United States
| | - Christy F Landes
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas77005, United States
- Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas77005, United States
- Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, Houston, Texas77005, United States
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25
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Dey S, Dolci M, Zijlstra P. Single-Molecule Optical Biosensing: Recent Advances and Future Challenges. ACS PHYSICAL CHEMISTRY AU 2023; 3:143-156. [PMID: 36968450 PMCID: PMC10037498 DOI: 10.1021/acsphyschemau.2c00061] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 01/13/2023]
Abstract
In recent years, the sensitivity and specificity of optical sensors has improved tremendously due to improvements in biochemical functionalization protocols and optical detection systems. As a result, single-molecule sensitivity has been reported in a range of biosensing assay formats. In this Perspective, we summarize optical sensors that achieve single-molecule sensitivity in direct label-free assays, sandwich assays, and competitive assays. We describe the advantages and disadvantages of single-molecule assays and summarize future challenges in the field including their optical miniaturization and integration, multimodal sensing capabilities, accessible time scales, and compatibility with real-life matrices such as biological fluids. We conclude by highlighting the possible application areas of optical single-molecule sensors that include not only healthcare but also the monitoring of the environment and industrial processes.
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Affiliation(s)
- Swayandipta Dey
- Eindhoven University of Technology, Department of Applied Physics, Eindhoven 5600 MB, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven, 5600 MB, The Netherlands
- Eindhoven Hendrik Casimir Institute, Eindhoven, 5600 MB, The Netherlands
| | - Mathias Dolci
- Eindhoven University of Technology, Department of Applied Physics, Eindhoven 5600 MB, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven, 5600 MB, The Netherlands
- Eindhoven Hendrik Casimir Institute, Eindhoven, 5600 MB, The Netherlands
| | - Peter Zijlstra
- Eindhoven University of Technology, Department of Applied Physics, Eindhoven 5600 MB, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven, 5600 MB, The Netherlands
- Eindhoven Hendrik Casimir Institute, Eindhoven, 5600 MB, The Netherlands
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26
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Simone G. Trends of Biosensing: Plasmonics through Miniaturization and Quantum Sensing. Crit Rev Anal Chem 2023:1-26. [PMID: 36601882 DOI: 10.1080/10408347.2022.2161813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Despite being extremely old concepts, plasmonics and surface plasmon resonance-based biosensors have been increasingly popular in the recent two decades due to the growing interest in nanooptics and are now of relevant significance in regards to applications associated with human health. Plasmonics integration into point-of-care devices for health surveillance has enabled significant levels of sensitivity and limit of detection to be achieved and has encouraged the expansion of the fields of study and market niches devoted to the creation of quick and incredibly sensitive label-free detection. The trend reflects in wearable plasmonic sensor development as well as point-of-care applications for widespread applications, demonstrating the potential impact of the new generation of plasmonic biosensors on human well-being through the concepts of personalized medicine and global health. In this context, the aim here is to discuss the potential, limitations, and opportunities for improvement that have arisen as a result of the integration of plasmonics into microsystems and lab-on-chip over the past five years. Recent applications of plasmonic biosensors in microsystems and sensor performance are analyzed. The final analysis focuses on the integration of microfluidics and lab-on-a-chip with quantum plasmonics technology prospecting it as a promising solution for chemical and biological sensing. Here it is underlined how the research in the field of quantum plasmonic sensing for biological applications has flourished over the past decade with the aim to overcome the limits given by quantum fluctuations and noise. The significant advances in nanophotonics, plasmonics and microsystems used to create increasingly effective biosensors would continue to benefit this field if harnessed properly.
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Affiliation(s)
- Giuseppina Simone
- Chemical Engineering, University of Naples 'Federico II', Naples, Italy
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27
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Trofymchuk K, Kołątaj K, Glembockyte V, Zhu F, Acuna GP, Liedl T, Tinnefeld P. Gold Nanorod DNA Origami Antennas for 3 Orders of Magnitude Fluorescence Enhancement in NIR. ACS NANO 2023; 17:1327-1334. [PMID: 36594816 DOI: 10.1021/acsnano.2c09577] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
DNA origami has taken a leading position in organizing materials at the nanoscale for various applications such as manipulation of light by exploiting plasmonic nanoparticles. We here present the arrangement of gold nanorods in a plasmonic nanoantenna dimer enabling up to 1600-fold fluorescence enhancement of a conventional near-infrared (NIR) dye positioned at the plasmonic hotspot between the nanorods. Transmission electron microscopy, dark-field spectroscopy, and fluorescence analysis together with numerical simulations give us insights on the heterogeneity of the observed enhancement values. The size of our hotspot region is ∼12 nm, granted by using the recently introduced design of NAnoantenna with Cleared HotSpot (NACHOS), which provides enough space for placing of tailored bioassays. Additionally, the possibility to synthesize nanoantennas in solution might allow for production upscaling.
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Affiliation(s)
- Kateryna Trofymchuk
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität München, 81377München, Germany
| | - Karol Kołątaj
- Faculty of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-University, Geschwister-Scholl-Platz 1, 80539Munich, Germany
- Département de Physique - Photonic Nanosystems, Université de Fribourg - Faculté des Sciences et Médicine, Chemin de Musée 3, CH-1700Fribourg, Switzerland
| | - Viktorija Glembockyte
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität München, 81377München, Germany
| | - Fangjia Zhu
- Département de Physique - Photonic Nanosystems, Université de Fribourg - Faculté des Sciences et Médicine, Chemin de Musée 3, CH-1700Fribourg, Switzerland
| | - Guillermo P Acuna
- Département de Physique - Photonic Nanosystems, Université de Fribourg - Faculté des Sciences et Médicine, Chemin de Musée 3, CH-1700Fribourg, Switzerland
| | - Tim Liedl
- Faculty of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-University, Geschwister-Scholl-Platz 1, 80539Munich, Germany
| | - Philip Tinnefeld
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität München, 81377München, Germany
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28
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Jakšić Z, Obradov M, Jakšić O. Bio-Inspired Nanomembranes as Building Blocks for Nanophotonics, Plasmonics and Metamaterials. Biomimetics (Basel) 2022; 7:biomimetics7040222. [PMID: 36546922 PMCID: PMC9775387 DOI: 10.3390/biomimetics7040222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 11/27/2022] [Accepted: 11/28/2022] [Indexed: 12/03/2022] Open
Abstract
Nanomembranes are the most widespread building block of life, as they encompass cell and organelle walls. Their synthetic counterparts can be described as freestanding or free-floating structures thinner than 100 nm, down to monatomic/monomolecular thickness and with giant lateral aspect ratios. The structural confinement to quasi-2D sheets causes a multitude of unexpected and often counterintuitive properties. This has resulted in synthetic nanomembranes transiting from a mere scientific curiosity to a position where novel applications are emerging at an ever-accelerating pace. Among wide fields where their use has proven itself most fruitful are nano-optics and nanophotonics. However, the authors are unaware of a review covering the nanomembrane use in these important fields. Here, we present an attempt to survey the state of the art of nanomembranes in nanophotonics, including photonic crystals, plasmonics, metasurfaces, and nanoantennas, with an accent on some advancements that appeared within the last few years. Unlimited by the Nature toolbox, we can utilize a practically infinite number of available materials and methods and reach numerous properties not met in biological membranes. Thus, nanomembranes in nano-optics can be described as real metastructures, exceeding the known materials and opening pathways to a wide variety of novel functionalities.
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29
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Metal nanoparticles-assisted early diagnosis of diseases. OPENNANO 2022. [DOI: 10.1016/j.onano.2022.100104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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30
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Calvo R, Thon A, Saad A, Salvador-Matar A, Manso-Silván M, Ahumada Ó, Pini V. Size characterization of plasmonic nanoparticles with dark-field single particle spectrophotometry. Sci Rep 2022; 12:17231. [PMID: 36280772 PMCID: PMC9592611 DOI: 10.1038/s41598-022-21649-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 09/29/2022] [Indexed: 01/06/2023] Open
Abstract
Plasmonic nanoparticles are widely used in multiple scientific and industrial applications. Although many synthesis methods have been reported in the literature throughout the last decade, controlling the size and shape of large populations still remains as a challenge. As size and shape variations have a strong impact in their plasmonic properties, the need to have metrological techniques to accurately characterize their morphological features is peremptory. We present a new optical method referred as Dark-Field Single Particle Spectrophotometry which is able to measure the individual sizes of thousands of particles with nanometric accuracy in just a couple of minutes. Our method also features an easy sample preparation, a straightforward experimental setup inspired on a customized optical microscope, and a measurement protocol simple enough to be carried out by untrained technicians. As a proof of concept, thousands of spherical nanoparticles of different sizes have been measured, and after a direct comparison with metrological gold standard electron microscopy, a discrepancy of 3% has been attested. Although its feasibility has been demonstrated on spherical nanoparticles, the true strengthness of the method is that it can be generalized also to nanoparticles with arbitrary shapes and geometries, thus representing an advantageous alternative to the gold-standard electron microscopy.
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Affiliation(s)
- Rodrigo Calvo
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain ,grid.5515.40000000119578126Departamento de Física Aplicada, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Andreas Thon
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
| | - Asis Saad
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
| | | | - Miguel Manso-Silván
- grid.5515.40000000119578126Departamento de Física Aplicada, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Óscar Ahumada
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
| | - Valerio Pini
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
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31
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Prabowo BA, Sousa C, Cardoso S, Freitas P, Fernandes E. Labeling on a Chip of Cellular Fibronectin and Matrix Metallopeptidase-9 in Human Serum. MICROMACHINES 2022; 13:1722. [PMID: 36296077 PMCID: PMC9611906 DOI: 10.3390/mi13101722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
We present a microfluidic chip for protein labeling in the human serum-based matrix. Serum is a complex sample matrix that contains a variety of proteins, and a matrix is used in many clinical tests. In this study, the device performance was tested using commercial serum samples from healthy donors spiked with the following target proteins: cellular fibronectin (c-Fn) and matrix metallopeptidase 9 (MMP9). The microfluidic molds were fabricated using micro milling on acrylic and using stereolithography (SLA) three-dimensional (3D) printing for an alternative method and comparison. A simple quality control was performed for both fabrication mold methods to inspect the channel height of the chip that plays a critical role in the labeling process. The fabricated microfluidic chip shows a good reproducibility and repeatability of the performance for the optimized channel height of 150 µm. The spiked proteins of c-Fn and MMP9 in the human serum-based matrix, were successfully labeled by the functionalized magnetic nanoparticles (MNPs). The biomarker labeling occurring in the serum was compared using a simple matrix sample: phosphate buffer. The measured signals obtained by using a magnetoresistive (MR) biochip platform showed that the labeling using the proposed microfluidic chip is in good agreement for both matrixes, i.e., the analytical performance (sensitivity) obtained with the serum, near the relevant cutoff values, is within the uncertainty of the measurements obtained with a simple and more controlled matrix: phosphate buffer. This finding is promising for stroke patient stratification where these biomarkers are found at high concentrations in the serum.
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Affiliation(s)
| | - Carole Sousa
- International Iberian Nanotechnology Laboratory (INL), 4715-330 Braga, Portugal
| | - Susana Cardoso
- INESC-MN– Institute for Systems and Computer Engineering-Microsystems and Nanotechnologies,1000-029 Lisbon, Portugal
| | - Paulo Freitas
- International Iberian Nanotechnology Laboratory (INL), 4715-330 Braga, Portugal
| | - Elisabete Fernandes
- International Iberian Nanotechnology Laboratory (INL), 4715-330 Braga, Portugal
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32
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Plasmonic phenomena in molecular junctions: principles and applications. Nat Rev Chem 2022; 6:681-704. [PMID: 37117494 DOI: 10.1038/s41570-022-00423-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2022] [Indexed: 11/08/2022]
Abstract
Molecular junctions are building blocks for constructing future nanoelectronic devices that enable the investigation of a broad range of electronic transport properties within nanoscale regions. Crossing both the nanoscopic and mesoscopic length scales, plasmonics lies at the intersection of the macroscopic photonics and nanoelectronics, owing to their capability of confining light to dimensions far below the diffraction limit. Research activities on plasmonic phenomena in molecular electronics started around 2010, and feedback between plasmons and molecular junctions has increased over the past years. These efforts can provide new insights into the near-field interaction and the corresponding tunability in properties, as well as resultant plasmon-based molecular devices. This Review presents the latest advancements of plasmonic resonances in molecular junctions and details the progress in plasmon excitation and plasmon coupling. We also highlight emerging experimental approaches to unravel the mechanisms behind the various types of light-matter interactions at molecular length scales, where quantum effects come into play. Finally, we discuss the potential of these plasmonic-electronic hybrid systems across various future applications, including sensing, photocatalysis, molecular trapping and active control of molecular switches.
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Lv J, Chang M, Gu Q, Ying Y, Si G. Plasmon-Enhanced Fluorescence Emission of an Electric Dipole Modulated by a Nanoscale Silver Hemisphere. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3070. [PMID: 36080107 PMCID: PMC9459785 DOI: 10.3390/nano12173070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The spontaneous emission of a fluorophore is altered by the surrounding electromagnetic field. Therefore, the radiation of the fluorophore can be engineered by inter-coupling with the nanoscale plasmons. This work proposes a nanoscale hemisphere structure that enhances the electric field and further modulates its effects on fluorophores by adjusting the radius of the hemisphere. A full-wave simulation is carried out using the finite element method, and the radiation characteristics of the nanoscale hemisphere are studied in detail. Compared with free space, the structure has generated significant enhancement exceeding 30. Through curve fitting, the relationship between the enhanced peak wavelength and the radius of the hemisphere is obtained.
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Affiliation(s)
- Jiangtao Lv
- College of Information Science and Engineering, Northeastern University, Shenyang 110004, China
- Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Qinhuangdao 066004, China
| | - Minghui Chang
- College of Information Science and Engineering, Northeastern University, Shenyang 110004, China
- Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Qinhuangdao 066004, China
| | - Qiongchan Gu
- College of Information Science and Engineering, Northeastern University, Shenyang 110004, China
| | - Yu Ying
- College of Information & Control Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Guangyuan Si
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, VIC 3168, Australia
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34
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Al Mannai A, Al-Ansari T, Saoud KM. Quantification of Serum Exosome Biomarkers Using 3D Nanoporous Gold and Spectrophotometry. SENSORS (BASEL, SWITZERLAND) 2022; 22:6347. [PMID: 36080806 PMCID: PMC9460504 DOI: 10.3390/s22176347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 03/28/2022] [Accepted: 03/28/2022] [Indexed: 06/15/2023]
Abstract
Tumor-derived exosomes may provide biomarkers for cancer treatment. Using sputtering technology, an affinity-based device to capture exosomes was developed using nanoporous substrate (NPG)-coated silicon microscopy. Immunology-based techniques detect and purify exosomes using gold coating with a specific antigen. Inverted fluorescent microscopy was used to detect target exosomes quantitatively utilizing fluorescent nanospheres as the label. We quantified the expression of CD63 surface protein markers on exosomes from conditioned culture media of breast cancer cells. The exosomes that targeted specific proteins with controls were statistically analyzed and compared to those that targeted non-specific proteins. Results from SEM showed that the exosomes were circular, between 30 and 150 nanometers in size. The porous gold substrates captured more exosomes than the nonporous substrates. Nitric acid treatments at different times resulted in a variety of pore sizes. Despite the increase in the size of the pores, the number of exosomes found in the porous gold substrate treated for 10 min nearly doubled compared to the one treated for 5 min. In this work, a fluorescence biosensor was developed to detect breast cancer exosomes using nanoporous gold substrates (NPG). Assay and model exosomes of specific breast cancer cells showed that exosomes exhibit diagnostic surface protein markers, reflecting the protein profile of their parent cells. Furthermore, the specific binding between the exosome surface antibodies and the targets identified the CD63 biomarkers on the exosome, suggesting these markers' diagnostic potential. This study can accelerate exosome research in determining tumor-related exosomes and develop novel cancer diagnostic methods.
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Affiliation(s)
- Amera Al Mannai
- College of Science and Engineering, Hamad Bin Khalifa University, Doha P.O. Box 34111, Qatar
| | - Tareq Al-Ansari
- College of Science and Engineering, Hamad Bin Khalifa University, Doha P.O. Box 34111, Qatar
| | - Khaled M. Saoud
- Liberal Arts and Science Program, Virginia Commonwealth University, Doha P.O. Box 8095, Qatar
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35
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Chen X, Liu Y, Liu X, Lu C. Nanoparticle-based single molecule fluorescent probes. LUMINESCENCE 2022; 37:1808-1821. [PMID: 35982510 DOI: 10.1002/bio.4364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 11/11/2022]
Abstract
Single molecule fluorescent probes have attracted considerable attention duet to their ultimate sensitivity, fast response, low sample consumption, and high signal-to-noise ratio. Nanoparticles with outstanding optical properties make them perfect candidates for probes in application of single molecule detection. In this review, we focus on various kinds of nanoparticles acting as single molecule fluorescent probes, including quantum dots, upconverting fluorescent nanoparticles, carbon dots, single-wall carbon nanotubes, fluorescent nanodiamonds, polymeric nanoparticles, nanoclusters, and metallic nanoparticles. Optical properties of various nanoparticles and their recent application in single molecule fluorescent probes are explored. How nanoparticles boost the sensitivity of detection is emphasized in combination with different sensing strategies. Future trends of nanoparticles in single molecule detection are also discussed. We hope this review can provide practical guidance for researchers who work on nanoparticle-based single molecule fluorescent probes.
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Affiliation(s)
- Xueqian Chen
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Yuhao Liu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Xiaoting Liu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Chao Lu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
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36
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Rajagopal S, Thangudu S, Feng JY, Sriram P, Yen TJ, Hwang KC. Hotspots in action: near-infrared light mediated photoelectrochemical oxygen evolution on high index faceted plasmonic gold nanoarchitectures. NANOSCALE 2022; 14:11323-11334. [PMID: 35894176 DOI: 10.1039/d2nr02741k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photo-induced electrochemical water splitting is a fascinating approach to overcome the present energy demands as well as environmental issues. To this end, near-infrared (NIR) photocatalysts stand out as promising candidates (where 53% of the solar light is NIR light) to solve the present energy crisis but the lack of NIR-activated photocatalysts has remained a great challenge for decades. Herein, for the first time, we report the synthesis of high-index faceted plasmonic Au nano-branched 12 tip nanostars, which can absorb the whole spectral region of electromagnetic radiation (UV-vis-NIR), for efficient water splitting. Moreover, the plasmonic hot spots on the Au 12 tip nanostars significantly promote the photoelectrochemical oxygen evolution reaction (OER) under NIR light (915 nm) with long-term stability. Remarkably, the Au 12 tip nanostars exhibit 250-fold enhancement of activity under 915 nm laser irradiation and 6.5-fold enhancement of activity under 532 nm laser irradiation, as compared to the Au NPs. Furthermore, the Finite-Difference Time-Domain (FDTD) study confirmed that the significant photoelectrochemical (PEC) enhancement in the NIR light region could be attributed to the hot-electron injection/plasmonic hot spot mechanism upon localized surface plasmonic resonance (LSPR) excitation. Overall, we anticipate that the present work would help to develop new NIR photoelectrocatalysts for meeting future energy demands.
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Affiliation(s)
- Sanjeevan Rajagopal
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - Suresh Thangudu
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - June-Yen Feng
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - Pavithra Sriram
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan, Republic of China
| | - Ta-Jen Yen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan, Republic of China
| | - Kuo Chu Hwang
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
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37
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Nooteboom SW, Wang Y, Dey S, Zijlstra P. Real-Time Interfacial Nanothermometry Using DNA-PAINT Microscopy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201602. [PMID: 35789234 DOI: 10.1002/smll.202201602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/21/2022] [Indexed: 06/15/2023]
Abstract
Biofunctionalized nanoparticles are increasingly used in biomedical applications including sensing, targeted delivery, and hyperthermia. However, laser excitation and associated heating of the nanomaterials may alter the structure and interactions of the conjugated biomolecules. Currently no method exists that directly monitors the local temperature near the material's interface where the conjugated biomolecules are. Here, a nanothermometer is reported based on DNA-mediated points accumulation for imaging nanoscale topography (DNA-PAINT) microscopy. The temperature dependent kinetics of repeated and reversible DNA interactions provide a direct readout of the local interfacial temperature. The accuracy and precision of the method is demonstrated by measuring the interfacial temperature of many individual gold nanoparticles in parallel, with a precision of 1 K. In agreement with numerical models, large particle-to-particle differences in the interfacial temperature are found due to underlying differences in optical and thermal properties. In addition, the reversible DNA interactions enable the tracking of interfacial temperature in real-time with intervals of a few minutes. This method does not require prior knowledge of the optical and thermal properties of the sample, and therefore opens the window to understanding and controlling interfacial heating in a wide range of nanomaterials.
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Affiliation(s)
- Sjoerd W Nooteboom
- Eindhoven University of Technology, Department of Applied Physics and Institute for Complex Molecular Systems, Eindhoven, 5600 MB, The Netherlands
| | - Yuyang Wang
- Eindhoven University of Technology, Department of Applied Physics and Institute for Complex Molecular Systems, Eindhoven, 5600 MB, The Netherlands
| | - Swayandipta Dey
- Eindhoven University of Technology, Department of Applied Physics and Institute for Complex Molecular Systems, Eindhoven, 5600 MB, The Netherlands
| | - Peter Zijlstra
- Eindhoven University of Technology, Department of Applied Physics and Institute for Complex Molecular Systems, Eindhoven, 5600 MB, The Netherlands
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38
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Zou H, Gu X, Xia C, Cheng R, Huang C, Li Y, Gao P. Gold triangular nanoplates with edge effect for reaction monitoring under dark-field microscopy. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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39
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Label-free nanofluidic scattering microscopy of size and mass of single diffusing molecules and nanoparticles. Nat Methods 2022; 19:751-758. [PMID: 35637303 PMCID: PMC9184284 DOI: 10.1038/s41592-022-01491-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 04/12/2022] [Indexed: 12/18/2022]
Abstract
Label-free characterization of single biomolecules aims to complement fluorescence microscopy in situations where labeling compromises data interpretation, is technically challenging or even impossible. However, existing methods require the investigated species to bind to a surface to be visible, thereby leaving a large fraction of analytes undetected. Here, we present nanofluidic scattering microscopy (NSM), which overcomes these limitations by enabling label-free, real-time imaging of single biomolecules diffusing inside a nanofluidic channel. NSM facilitates accurate determination of molecular weight from the measured optical contrast and of the hydrodynamic radius from the measured diffusivity, from which information about the conformational state can be inferred. Furthermore, we demonstrate its applicability to the analysis of a complex biofluid, using conditioned cell culture medium containing extracellular vesicles as an example. We foresee the application of NSM to monitor conformational changes, aggregation and interactions of single biomolecules, and to analyze single-cell secretomes. Nanofluidic scattering microscopy enables label-free, quantitative measurements of the molecular weight and hydrodynamic radius of biological molecules and nanoparticles freely diffusing inside a nanofluidic channel.
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Abstract
Healthcare is undergoing large transformations, and it is imperative to leverage new technologies to support the advent of personalized medicine and disease prevention. It is now well accepted that the levels of certain biological molecules found in blood and other bodily fluids, as well as in exhaled breath, are an indication of the onset of many human diseases and reflect the health status of the person. Blood, urine, sweat, or saliva biomarkers can therefore serve in early diagnosis of diseases such as cancer, but also in monitoring disease progression, detecting metabolic disfunctions, and predicting response to a given therapy. For most point-of-care sensors, the requirement that patients themselves can use and apply them is crucial not only regarding the diagnostic part, but also at the sample collection level. This has stimulated the development of such diagnostic approaches for the non-invasive analysis of disease-relevant analytes. Considering these timely efforts, this review article focuses on novel, sensitive, and selective sensing systems for the detection of different endogenous target biomarkers in bodily fluids as well as in exhaled breath, which are associated with human diseases.
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41
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Sakamoto M, Saitow KI. Fast, Economical, and Reproducible Sensing from a 2D Si Wire Array: Accurate Characterization by Single Wire Spectroscopy. Anal Chem 2022; 94:6672-6680. [PMID: 35475623 DOI: 10.1021/acs.analchem.1c05001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Silicon (Si) is promising as a field enhancement material because of its high abundance, low toxicity, and high refractive index. The field enhancement effect intensifies light-matter interactions, which improves photocatalysis, solar cell performance, and sensor sensitivity. To manufacture field enhancement materials on a production scale, the fabrication technique must be simple, cost-effective, fast, and highly reproducible and must produce a high enhancement factor (EF). Herein, we report on an economical and efficient fabrication method for a field enhancement substrate consisting of a two-dimensional Si wire array (2D-SiWA). This substrate was demonstrated as a fluorescence sensor with high sensitivity (EF > 200) and composed of a large area (6.0 mm2). In addition, single wire spectroscopy was used to identify very high reproducibility of the sensor sensitivity in regular regions (97%) and a mixture of regular and irregular regions (87%) of the 2D-SiWA. The large-area Si fluorescence sensor fabrication was cost-effective and rapid and was 50× less expensive, 20×faster, and 60,000×larger than the typical electron beam lithography method.
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Affiliation(s)
- Masanori Sakamoto
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Ken-Ichi Saitow
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.,Department of Materials Science, Natural Science Center for Basic Research and Development (N-BARD), Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.,Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Higashi-Hiroshima 739-8526, Japan
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42
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Tanyeli I, Darmadi I, Sech M, Tiburski C, Fritzsche J, Andersson O, Langhammer C. Nanoplasmonic NO 2 Sensor with a Sub-10 Parts per Billion Limit of Detection in Urban Air. ACS Sens 2022; 7:1008-1018. [PMID: 35357817 PMCID: PMC9040054 DOI: 10.1021/acssensors.1c02463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
![]()
Urban air pollution
is a critical health problem in cities all
around the world. Therefore, spatially highly resolved real-time monitoring
of airborne pollutants, in general, and of nitrogen dioxide, NO2, in particular, is of utmost importance. However, highly
accurate but fixed and bulky measurement stations or satellites are
used for this purpose to date. This defines a need for miniaturized
NO2 sensor solutions with detection limits in the low parts
per billion range to finally enable indicative air quality monitoring
at low cost that facilitates detection of highly local emission peaks
and enables the implementation of direct local actions like traffic
control, to immediately reduce local emissions. To address this challenge,
we present a nanoplasmonic NO2 sensor based on arrays of
Au nanoparticles coated with a thin layer of polycrystalline WO3, which displays a spectral redshift in the localized surface
plasmon resonance in response to NO2. Sensor performance
is characterized under (i) idealized laboratory conditions, (ii) conditions
simulating humid urban air, and (iii) an outdoor field test in a miniaturized
device benchmarked against a commercial NO2 sensor approved
according to European and American standards. The limit of detection
of the plasmonic solution is below 10 ppb in all conditions. The observed
plasmonic response is attributed to a combination of charge transfer
between the WO3 layer and the plasmonic Au nanoparticles,
WO3 layer volume expansion, and changes in WO3 permittivity. The obtained results highlight the viability of nanoplasmonic
gas sensors, in general, and their potential for practical application
in indicative urban air monitoring, in particular.
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Affiliation(s)
- Irem Tanyeli
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
- Insplorion AB, Arvid Wallgrens Backe 20, 413 46 Göteborg, Sweden
| | - Iwan Darmadi
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Martin Sech
- Insplorion AB, Arvid Wallgrens Backe 20, 413 46 Göteborg, Sweden
| | - Christopher Tiburski
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Joachim Fritzsche
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Olof Andersson
- Insplorion AB, Arvid Wallgrens Backe 20, 413 46 Göteborg, Sweden
| | - Christoph Langhammer
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
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43
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Chauhan N, Saxena K, Jain U. Single molecule detection; from microscopy to sensors. Int J Biol Macromol 2022; 209:1389-1401. [PMID: 35413320 DOI: 10.1016/j.ijbiomac.2022.04.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/31/2022] [Accepted: 04/05/2022] [Indexed: 01/31/2023]
Abstract
Single molecule detection is necessary to find out physical, chemical properties and their mechanism involved in the normal functioning of body cells. In this way, they can provide a new direction to the healthcare system. Various techniques have been developed and employed for their successful detection. Herein, we have emphasized various traditional methods as well as biosensing technology which offer single molecule sensitivity. The various methods including plasmonic resonance, nanopores, whispering gallery mode, Simoa assay and recognition tunneling are discussed in the initial part which has been followed by a discussion about biosensor-based detection. Plasmonic, SERS, CRISPR/Cas, and other types of biosensors are focused in this review and found to be highly sensitive for single molecule detection. This review provides an overview of progression in different techniques employed for single molecule detection.
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Affiliation(s)
- Nidhi Chauhan
- Amity Institute of Nanotechnology (AINT), Amity University Uttar Pradesh (AUUP), Noida 201313, U.P., India
| | - Kirti Saxena
- Amity Institute of Nanotechnology (AINT), Amity University Uttar Pradesh (AUUP), Noida 201313, U.P., India
| | - Utkarsh Jain
- Amity Institute of Nanotechnology (AINT), Amity University Uttar Pradesh (AUUP), Noida 201313, U.P., India.
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44
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Wu B, Lou Y, Wu D, Min Q, Wan X, Zhang H, Yu Y, Ma J, Si G, Pang Y. Directivity-Enhanced Detection of a Single Nanoparticle Using a Plasmonic Slot Antenna. NANO LETTERS 2022; 22:2374-2380. [PMID: 35285643 DOI: 10.1021/acs.nanolett.1c04949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In situ refractive index sensors integrated with nanoaperture-based optical tweezers possess stable and sensitive responsivity to single nanoparticles. In most existing works, detection events are only identified using the total light intensity with directivity information ignored, leading to a low signal-to-noise ratio. Here, we propose to detect an optically trapped 20 nm silica particle by monitoring directivity of a plasmonic antenna. The main and secondary radiation lobes of the antenna reverse upon trapping because the particle-induced perturbation negates the relative phase between two antenna elements, leading to a significant change of the antenna front-to-back ratio. As a result, we obtain a signal-to-noise ratio of 20, with an order-of-magnitude improvement as compared to the intensity-only detection scheme.
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Affiliation(s)
- Bei Wu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Yuanhao Lou
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Dan Wu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Qiuhong Min
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Xinchen Wan
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Hongyuan Zhang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Yarong Yu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Jian Ma
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Gangzheng Si
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
| | - Yuanjie Pang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China
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45
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Badán JA, Navarrete-Astorga E, Henríquez R, Jiménez FM, Ariosa D, Ramos-Barrado JR, Dalchiele EA. Silver Nanoparticle Arrays onto Glass Substrates Obtained by Solid-State Thermal Dewetting: A Morphological, Structural and Surface Chemical Study. NANOMATERIALS 2022; 12:nano12040617. [PMID: 35214946 PMCID: PMC8878931 DOI: 10.3390/nano12040617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 11/20/2022]
Abstract
Silver nanoparticles (NPs) on glass substrates were obtained by a solid-state thermal dewetting (SSD) process using vacuum-evaporated-silver precursor layers. An exhaustive investigation of the morphological, structural, and surface chemistry properties by systematically controlling the precursor film thickness, annealing temperature, and time was conducted. Thin silver films with thicknesses of 40 and 80 nm were deposited and annealed in air by applying a combined heat-up+constant temperature–time program. Temperatures from 300 to 500 °C and times from 0 to 50 min were assayed. SSD promoted the morphological modification of the films, leading to the Ag NPs having a discrete structure. The size, shape, surface density, and inter-nanoparticle distance of the nanoparticles depended on the initial film thickness, annealing temperature, and time, exhibiting a cubic silver structure with a (111) preferred crystallographic orientation. The prepared NPs were found to be highly enriched in the Ag{111}/Ag{110}/Ag{100} equilibrium facets. SSD not only promotes NP formation but also promotes the partial oxidation from Ag to AgO at the surface level. AgO was detected on the surface around the nanoparticles synthesized at 500 °C. Overall, a broad framework has been established that connects process factors to distinguish resultant Ag NP features in order to develop unique silver nanoparticles for specific applications.
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Affiliation(s)
- Juan Agustín Badán
- Instituto de Física, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, C.C. 30, Montevideo 11000, Uruguay; (J.A.B.); (D.A.)
| | - Elena Navarrete-Astorga
- Laboratorio de Materiales y Superficies (Unidad Asociada al CSIC), Departamentos de Física Aplicada & Ing. Química, Universidad de Málaga, E29071 Málaga, Spain; (E.N.-A.); (F.M.J.); (J.R.R.-B.)
| | - Rodrigo Henríquez
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Av. Brasil, Valparaíso 2950, Chile;
| | - Francisco Martín Jiménez
- Laboratorio de Materiales y Superficies (Unidad Asociada al CSIC), Departamentos de Física Aplicada & Ing. Química, Universidad de Málaga, E29071 Málaga, Spain; (E.N.-A.); (F.M.J.); (J.R.R.-B.)
| | - Daniel Ariosa
- Instituto de Física, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, C.C. 30, Montevideo 11000, Uruguay; (J.A.B.); (D.A.)
| | - José Ramón Ramos-Barrado
- Laboratorio de Materiales y Superficies (Unidad Asociada al CSIC), Departamentos de Física Aplicada & Ing. Química, Universidad de Málaga, E29071 Málaga, Spain; (E.N.-A.); (F.M.J.); (J.R.R.-B.)
| | - Enrique A. Dalchiele
- Instituto de Física, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, C.C. 30, Montevideo 11000, Uruguay; (J.A.B.); (D.A.)
- Correspondence: ; Tel.: +598-27142714
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46
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Shape Modulation of Plasmonic Nanostructures by Unconventional Lithographic Technique. NANOMATERIALS 2022; 12:nano12030547. [PMID: 35159890 PMCID: PMC8839889 DOI: 10.3390/nano12030547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/26/2022] [Accepted: 02/01/2022] [Indexed: 02/04/2023]
Abstract
Conventional nano-sphere lithography techniques have been extended to the fabrication of highly periodic arrays of sub-wavelength nanoholes in a thin metal film. By combining the dry etching processes of self-assembled monolayers of polystyrene colloids with metal physical deposition, the complete transition from increasing size triangular nanoprism to hexagonally distributed nanoholes array onto thin metal film has been gradually explored. The investigated nano-structured materials exhibit interesting plasmonic properties which can be precisely modulated in a desired optical spectral region. An interesting approach based on optical absorbance measurements has been adopted for rapid and non-invasive inspections of the nano-sphere monolayer after the ion etching process. By enabling an indirect and accurate evaluation of colloid dimensions in a large area, this approach allows the low-cost and reproducible fabrication of plasmonic materials with specifically modulated optical properties suitable for many application in biosensing devices or Raman enhanced effects.
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47
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Li N, Wang X, Tibbs J, Che C, Peinetti AS, Zhao B, Liu L, Barya P, Cooper L, Rong L, Wang X, Lu Y, Cunningham BT. Label-Free Digital Detection of Intact Virions by Enhanced Scattering Microscopy. J Am Chem Soc 2022; 144:1498-1502. [PMID: 34928591 PMCID: PMC9762554 DOI: 10.1021/jacs.1c09579] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Several applications in health diagnostics, food, safety, and environmental monitoring require rapid, simple, selective, and quantitatively accurate viral load monitoring. Here, we introduce the first label-free biosensing method that rapidly detects and quantifies intact virus in human saliva with single-virion resolution. Using pseudotype SARS-CoV-2 as a representative target, we immobilize aptamers with the ability to differentiate active from inactive virions on a photonic crystal, where the virions are captured through affinity with the spike protein displayed on the outer surface. Once captured, the intrinsic scattering of the virions is amplified and detected through interferometric imaging. Our approach analyzes the motion trajectory of each captured virion, enabling highly selective recognition against nontarget virions, while providing a limit of detection of 1 × 103 copies/mL at room temperature. The approach offers an alternative to enzymatic amplification assays for point-of-collection diagnostics.
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Affiliation(s)
- Nantao Li
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Xiaojing Wang
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Joseph Tibbs
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Congnyu Che
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Ana Sol Peinetti
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Bin Zhao
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Leyang Liu
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Priyash Barya
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Laura Cooper
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Lijun Rong
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Xing Wang
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yi Lu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Brian T Cunningham
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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48
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Lee H, Berk J, Webster A, Kim D, Foreman MR. Label-free detection of single nanoparticles with disordered nanoisland surface plasmon sensor. NANOTECHNOLOGY 2022; 33:165502. [PMID: 34915461 DOI: 10.1088/1361-6528/ac43e9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
We report sensing of single nanoparticles using disordered metallic nanoisland substrates supporting surface plasmon polaritons (SPPs). Speckle patterns arising from leakage radiation of elastically scattered SPPs provide a unique fingerprint of the scattering microstructure at the sensor surface. Experimental measurements of the speckle decorrelation are presented and shown to enable detection of sorption of individual gold nanoparticles and polystyrene beads. Our approach is verified through bright-field and fluorescence imaging of particles adhering to the nanoisland substrate.
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Affiliation(s)
- Hongki Lee
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Joel Berk
- Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2BW, United Kingdom
| | - Aaron Webster
- Independent Scholar, 187 Pinehurst Rd, Canyon, CA 94516, United States of America
| | - Donghyun Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Matthew R Foreman
- Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2BW, United Kingdom
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49
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Li W, Zhou J, Maccaferri N, Krahne R, Wang K, Garoli D. Enhanced Optical Spectroscopy for Multiplexed DNA and Protein-Sequencing with Plasmonic Nanopores: Challenges and Prospects. Anal Chem 2022; 94:503-514. [PMID: 34974704 PMCID: PMC8771637 DOI: 10.1021/acs.analchem.1c04459] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wang Li
- State
Key Laboratory of Analytical Chemistry for Life Science School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, P. R. China
| | - Juan Zhou
- State
Key Laboratory of Analytical Chemistry for Life Science School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, P. R. China
| | - Nicolò Maccaferri
- Department
of Physics and Materials Science, University
of Luxembourg, L-1511 Luxembourg, Luxembourg
- Department
of Physics, Umeå University, Linnaeus väg 20, SE-90736 Umeå, Sweden
| | - Roman Krahne
- Istituto
Italiano di Tecnologia, Optoelectronics
Research Line, Morego
30, I-16163 Genova, Italy
| | - Kang Wang
- State
Key Laboratory of Analytical Chemistry for Life Science School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, P. R. China
| | - Denis Garoli
- Istituto
Italiano di Tecnologia, Optoelectronics
Research Line, Morego
30, I-16163 Genova, Italy
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50
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van Dongen JE, Spoelstra LR, Berendsen JTW, Loessberg-Zahl JT, Eijkel JCT, Segerink LI. A Multiplexable Plasmonic Hairpin-DNA Sensor Based On Target-specific Tether Dynamics. ACS Sens 2021; 6:4297-4303. [PMID: 34851614 PMCID: PMC8715532 DOI: 10.1021/acssensors.1c02097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The need for measurements
of multiple biomarkers simultaneously
at subnanomolar concentrations asks for the development of new sensors
with high sensitivity, specificity, precision, and accuracy. Currently,
multiplexed sensing in single molecule sensors increases the complexity
of the system in terms of reagents and sample read-out. In this letter,
we propose a novel approach to multiplex hairpin-based single-DNA
molecule sensors, which overcomes the limitations of the present approaches
for multiplexing. By target-dependent ssDNA hairpin design, we can
create DNA tethers that have distinct tether dynamics upon target
binding. Our numerical model shows that by changing the stem length
of the ssDNA hairpin, significantly different dynamic tether behavior
will be observed. By exploiting the distance-dependent coupling of
AuNPs to gold films, we can probe this dynamic behavior along the z-axis using a simple laser equipped microscope.
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Affiliation(s)
- Jeanne Elisabeth van Dongen
- BIOS Lab on a Chip Group, MESA+ & TechMed Institutes, Max Planck Center for Complex Fluid Dynamics, University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
| | - Laurens Rudi Spoelstra
- BIOS Lab on a Chip Group, MESA+ & TechMed Institutes, Max Planck Center for Complex Fluid Dynamics, University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
| | - Johanna Theodora Wilhelmina Berendsen
- BIOS Lab on a Chip Group, MESA+ & TechMed Institutes, Max Planck Center for Complex Fluid Dynamics, University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
| | - Joshua Taylor Loessberg-Zahl
- BIOS Lab on a Chip Group, MESA+ & TechMed Institutes, Max Planck Center for Complex Fluid Dynamics, University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
| | - Jan Cornelis Titus Eijkel
- BIOS Lab on a Chip Group, MESA+ & TechMed Institutes, Max Planck Center for Complex Fluid Dynamics, University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
| | - Loes Irene Segerink
- BIOS Lab on a Chip Group, MESA+ & TechMed Institutes, Max Planck Center for Complex Fluid Dynamics, University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
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