Surface-Enhanced Raman Spectroscopy
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TLDR
The use of nanosphere lithography for the fabrication of highly reproducible and robust SERS substrates is described and progress in applying SERS to the detection of chemical warfare agents and several biological molecules is described.Abstract:
The ability to control the size, shape, and material of a surface has reinvigorated the field of surface-enhanced Raman spectroscopy (SERS). Because excitation of the localized surface plasmon resonance of a nanostructured surface or nanoparticle lies at the heart of SERS, the ability to reliably control the surface characteristics has taken SERS from an interesting surface phenomenon to a rapidly developing analytical tool. This article first explains many fundamental features of SERS and then describes the use of nanosphere lithography for the fabrication of highly reproducible and robust SERS substrates. In particular, we review metal film over nanosphere surfaces as excellent candidates for several experiments that were once impossible with more primitive SERS substrates (e.g., metal island films). The article also describes progress in applying SERS to the detection of chemical warfare agents and several biological molecules.read more
Citations
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Journal ArticleDOI
Silver-Polymer Composite Stars: Synthesis and Applications.
Kimberly A. Homan,Jeffrey Chen,Adriane Schiano,Mona B. Mohamed,Katherine A. Willets,Sankaran Murugesan,Keith J. Stevenson,Stanislav Emelianov +7 more
TL;DR: Colloidal "silver stars" synthesized upon poly(lactic-co-glycolic) acid nanosphere templates via a facile two-step silver reduction method demonstrated the feasibility of using the silver stars instead of platinum for the oxygen reduction reaction in alkaline fuel cells.
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Diamond like carbon nanocomposites with embedded metallic nanoparticles
TL;DR: An overview on structure formation, optical and electrical properties of diamond like carbon (DLC) based metal nanocomposites deposited by reactive magnetron sputtering and treated by plasma and laser ablation methods is presented.
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Surface-Enhanced Raman Spectroscopy for Identification of Heavy Metal Arsenic(V)-Mediated Enhancing Effect on Antibiotic Resistance.
Li Cui,Yingjiao Zhang,Wei E. Huang,Bifeng Zhang,Francis Martin,Junyi Li,Kaisong Zhang,Yong-Guan Zhu +7 more
TL;DR: A homogeneous vacuum filtration-based bacterial sample fabrication enabling high surface-enhanced Raman scattering (SERS) reproducibility across multiple bacterial samples and negating interfering spectral variations from inhomogeneous sample geometry and SERS enhancement was employed to study heavy metal arsenic [As(V)]-mediated antibiotic resistance in a robust, sensitive, and rapid fashion.
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Dynamic Placement of Plasmonic Hotspots for Super-resolution Surface-Enhanced Raman Scattering
TL;DR: This paper demonstrates dynamic placement of locally enhanced plasmonic fields using holographic laser illumination of a silver nanohole array and shows that such subwavelength shifting and localization of plAsmonic hotspots has potential for imaging applications.
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Lasing in quasi-periodic and aperiodic plasmon lattices
TL;DR: In this paper, the authors demonstrate lasing in quasi-periodic and aperiodic Galois, Thue-Morse, Fibonacci, paperfolding, Rudin-Shapiro, and randomized lattice arrangements of silver particles spanning the Fourier spectrum from discrete (period-like) to increasingly continuous (random-like).
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Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering
Shuming Nie,Steven R. Emory +1 more
TL;DR: In this article, surface-enhanced Raman scattering was used to detect single molecules and single nanoparticles at room temperature with the use of surface enhanced Raman, and the intrinsic Raman enhancement factors were on the order of 10 14 to 10 15, much larger than the ensemble-averaged values derived from conventional measurements.
Journal ArticleDOI
The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
TL;DR: In this paper, the authors describe recent progress in the theory of nanoparticle optical properties, particularly methods for solving Maxwell's equations for light scattering from particles of arbitrary shape in a complex environment.
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