Journal ArticleDOI
Gold nanoparticle-enabled biological and chemical detection and analysis
Hilde Jans,Qun Huo +1 more
TLDR
An overview of the optical properties of AuNPs is presented, followed by a more detailed literature survey, and some technical issues that remain to be solved in order to move the technique forward.Abstract:
Gold nanoparticles (AuNPs) are some of the most extensively studied nanomaterials. Because of their unique optical, chemical, electrical, and catalytic properties, AuNPs have attracted enormous amount of interest for applications in biological and chemical detection and analysis. The purpose of this critical review is to provide the readers with an update on the recent developments in the field of AuNPs for sensing applications based on their optical properties. An overview of the optical properties of AuNPs is presented first, followed by a more detailed literature survey. As the last part of this review, we compare the advantages and disadvantages of each technique, briefly discuss their commercialization status, and some technical issues that remain to be solved in order to move the technique forward (151 references).read more
Citations
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Journal ArticleDOI
Supramolecular self-assemblies as functional nanomaterials
TL;DR: This compilation illustrates how, based on the rules of supramolecular chemistry, the bottom-up approach to design functional objects at the nanoscale is currently producing highly sophisticated materials oriented towards a growing number of applications with high societal impact.
Journal ArticleDOI
Nanoparticle-Based Immunochemical Biosensors and Assays: Recent Advances and Challenges
TL;DR: This work reviews the progress achieved during the recent five years in immunochemical biosensors (immunosensors) combined with nanoparticles for enhanced sensitivity and introduces antibodies as classic recognition elements.
Journal ArticleDOI
DNA Switches: From Principles to Applications
TL;DR: This Review addresses the implementation of the information encoded in nucleic acids to develop DNA switches to tailor switchable DNA hydrogels, for the controlled drug-release and for the activation of switchable enzyme cascades.
Journal ArticleDOI
Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions
TL;DR: Review of chemical sensors developed for the detection of the first-row d-block metals (except Cu and Zn): Cr, Mn, Fe, Co, and Ni focuses on the development of fluorescent sensors, colorimetric sensors, and responsive MRI contrast agents for these transition metals.
Journal ArticleDOI
Strategies for enhancing the sensitivity of plasmonic nanosensors
Longhua Guo,Longhua Guo,Joshua A. Jackman,Huanghao Yang,Peng Chen,Nam-Joon Cho,Dong-Hwan Kim +6 more
TL;DR: In this article, a review highlights recent progress on different strategies used for improving the sensitivity of plasmonic nanosensors, classified into three categories based on their different sensing mechanisms: (1) sensing based on target-induced local refractive index changes, (2) colorimetric sensing, and (3) amplification of detection sensitivity based on nanoparticle growth.
References
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Journal ArticleDOI
A DNA-based Method for Rationally Assembling Nanoparticles Into Macroscopic Materials
TL;DR: A method for assembling colloidal gold nanoparticles rationally and reversibly into macroscopic aggregates by using the specificity of DNA interactions to direct the interactions between particles of different size and composition is described.
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Localized Surface Plasmon Resonance Spectroscopy and Sensing
TL;DR: This review describes recent fundamental spectroscopic studies that reveal key relationships governing the LSPR spectral location and its sensitivity to the local environment, including nanoparticle shape and size and introduces a new form of L SPR spectroscopy, involving the coupling between nanoparticle plasmon resonances and adsorbate molecular resonances.
Journal ArticleDOI
Surface-enhanced spectroscopy
TL;DR: The surface-enhanced Raman scattering (SERS) effect was first discovered by Fleischmann, Van Duyne, Creighton, and Creighton as discussed by the authors, who showed that molecules adsorbed on specially prepared silver surfaces produce a Raman spectrum that is at times a millionfold more intense than expected.
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Calculated Absorption and Scattering Properties of Gold Nanoparticles of Different Size, Shape, and Composition: Applications in Biological Imaging and Biomedicine
TL;DR: While nanorods with a higher aspect ratio along with a smaller effective radius are the best photoabsorbing nanoparticles, the highest scattering contrast for imaging applications is obtained from nanorod of high aspect ratio with a larger effective radius.
Journal ArticleDOI
The Fano resonance in plasmonic nanostructures and metamaterials
Boris Luk'yanchuk,Nikolay I. Zheludev,Stefan A. Maier,Naomi J. Halas,Peter Nordlander,Harald Giessen,Chong Tow Chong,Chong Tow Chong +7 more
TL;DR: The steep dispersion of the Fano resonance profile promises applications in sensors, lasing, switching, and nonlinear and slow-light devices.