Cavity-Type DNA Origami-Based Plasmonic Nanostructures for Raman Enhancement

Zhao, Mengzhen; Xu, Wei; Ren, Shaokang; Xing, Yikang; Wang, Jun; Teng, Nan; Zhao, Dongxia; Liu, Wei; Zhu, Dan; Su, Shao; Shi, Jiye; Song, Shiping; Wang, Lihua; Chao, Jie; Wang, Lianhui

doi:10.1021/acsami.7b05959

Cited by 15 publications

(13 citation statements)

References 50 publications

(54 reference statements)

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“…Surface plasmons are defined as collective electron oscillations coupled to the electromagnetic (EM) fields confined to the dielectric-metal interface. Strong local EM field enhancement and concentration of light energy into nanometer-sized volumes, opened up exciting prospects in sensing, detection, imaging and manipulation techniques at the nanoscale, as well as enabled the realization of various plasmonic devices and applications ranging from photonics, chemistry, medicine, bioscience, energy harvesting and communication to information processing (e.g., References [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]) and quantum optics (e.g., References [20][21][22][23][24][25][26][27][28][29][30][31]).…”

Section: Introductionmentioning

confidence: 99%

Impact of the Interband Transitions in Gold and Silver on the Dynamics of Propagating and Localized Surface Plasmons

Kolwas

Derkachova

2020

Nanomaterials

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Understanding and modeling of a surface-plasmon phenomenon on lossy metals interfaces based on simplified models of dielectric function lead to problems when confronted with reality. For a realistic description of lossy metals, such as gold and silver, in the optical range of the electromagnetic spectrum and in the adjacent spectral ranges it is necessary to account not only for ohmic losses but also for the radiative losses resulting from the frequency-dependent interband transitions. We give a detailed analysis of Surface Plasmon Polaritons (SPPs) and Localized Surface Plasmons (LPSs) supported by such realistic metal/dielectric interfaces based on the dispersion relations both for flat and spherical gold and silver interfaces in the extended frequency and nanoparticle size ranges. The study reveals the region of anomalous dispersion for a silver flat interface in the near UV spectral range and high-quality factors for larger nanoparticles. We show that the frequency-dependent interband transition accounted in the dielectric function in a way allowing reproducing well the experimentally measured indexes of refraction does exert the pronounced impact not only on the properties of SPP and LSP for gold interfaces but also, with the weaker but not negligible impact, on the corresponding silver interfaces in the optical ranges and the adjacent spectral ranges.

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Section: Introductionmentioning

confidence: 99%

Impact of the Interband Transitions in Gold and Silver on the Dynamics of Propagating and Localized Surface Plasmons

Kolwas

Derkachova

2020

Nanomaterials

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“…Using the formalism recalled in the previous section and the equation 4, the evolution of the whole system S is described by the dynamics of the density matrix ρ S (t), (eqs. (4,6)):…”

Section: Dynamics Of the Total (Radiative And Collisional) Plasmon Da...mentioning

confidence: 99%

“…Plasmonics is a promising research area with many potential applications ranging from photonics, chemistry, medicine, bioscience, energy harvesting, and communication to information processing (e.g., [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]) and quantum optics (e.g., [16][17][18][19][20][21][22][23][24][25][26]). Plasmonics is based on the excitation of plasmons-electromagnetic excitations coupled to electron charge density oscillations on metal-dielectric interfaces, which result in confinement and enhancement of electromagnetic (EM) fields at metal/dielectric interfaces.…”

Section: Introductionmentioning

confidence: 99%

Decay Dynamics of Localized Surface Plasmons: Damping of Coherences and Populations of the Oscillatory Plasmon Modes

Kolwas

2019

Plasmonics

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Properties of plasmonic materials are associated with surface plasmons-the electromagnetic excitations coupled to coherent electron charge density oscillations on a metal/dielectric interface. Although decay of such oscillations cannot be avoided, there are prospects for controlling plasmon damping dynamics. In spherical metal nanoparticles (MNPs), the basic properties of localized surface plasmons (LSPs) can be controlled with their radius. The present paper handles the link between the sizedependent description of LSP properties derived from the dispersion relation based on Maxwell's equations and the quantum picture in which MNPs are treated as "quasi-particles." Such picture, based on the reduced density matrix of quantum open systems ruled by the master equation in the Lindblad form, enables to distinguish between damping processes of populations and coherences of multipolar plasmon oscillatory states and to establish the intrinsic relations between the rates of these processes, independently of the size of MNP. The impact of the radiative and the nonradiative energy dissipation channels is discussed.

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“…1−9 DNA nanostructures, pioneered by Seeman, 10 use the binding of Watson–Crick base pairs to program specific, non-native formations that can then perform various tasks at the nanoscale, and this technology is particularly suited for biosensing because it is a native biological material. 11−14 DNA nanostructures have been shown to be highly modular for the creation of a range of two-dimensional and three-dimensional motifs, including both static and dynamic structures. 15−18 The work within dynamic systems has often focused on induced motion through competitive DNA hybridization, such as multistep logic, 19 hybridization chain reaction, 20 DNA tweezers, 21 and hinged lid boxes.…”

Section: Introductionmentioning

confidence: 99%

Restriction Enzymes as a Target for DNA-Based Sensing and Structural Rearrangement

et al. 2018

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DNA nanostructures have been shown viable for the creation of complex logic-enabled sensing motifs. To date, most of these types of devices have been limited to the interaction with strictly DNA-type inputs. Restriction endonuclease represents a class of enzyme with endogenous specificity to DNA, and we hypothesize that these can be integrated with a DNA structure for use as inputs to trigger structural transformation and structural rearrangement. In this work, we reconfigured a three-arm DNA switch, which utilizes a cyclic Förster resonance energy transfer interaction between three dyes to produce complex output for the detection of three separate input regions to respond to restriction endonucleases, and investigated the efficacy of the enzyme targets. We demonstrate the ability to use three enzymes in one switch with no nonspecific interaction between cleavage sites. Further, we show that the enzymatic digestion can be harnessed to expose an active toehold into the DNA structure, allowing for single-pot addition of a small oligo in solution.

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Cavity-Type DNA Origami-Based Plasmonic Nanostructures for Raman Enhancement

Cited by 15 publications

References 50 publications

Impact of the Interband Transitions in Gold and Silver on the Dynamics of Propagating and Localized Surface Plasmons

Impact of the Interband Transitions in Gold and Silver on the Dynamics of Propagating and Localized Surface Plasmons

Decay Dynamics of Localized Surface Plasmons: Damping of Coherences and Populations of the Oscillatory Plasmon Modes

Restriction Enzymes as a Target for DNA-Based Sensing and Structural Rearrangement

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