Recent Advances of Plasmonic Nanoparticles and their Applications

Liu, Jianxun; He, Huilin; Xiao, Dong; Yin, Shengtao; Ji, Wei; Jiang, Shouzhen; Luo, Dan; Wang, Bing; Liu, Yanjun

doi:10.3390/ma11101833

Cited by 173 publications

(104 citation statements)

References 91 publications

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“…At the same time, revolutionary developments have been made in the fields of nanotechnology and nanoscience, leading to the birth of a series of novel nanomaterials [10,[47][48][49][50][51][52][53][54][55]. These nanostructured materials, whose size in at least one dimension is in the range from 1 nm to 100 nm, have gained a wealth of academic and industrial attention due to their size-dependent electronic, optical, magnetic, and chemical properties, which are significantly different from those of bulk materials as well as from individual atoms or molecules [55][56][57][58][59][60][61][62]. These nanostructured materials have been extensively applied in nearly every field of science from energy, optics, computing to catalysis, biosciences and medical sciences [48,[63][64][65].…”

Section: Introductionmentioning

confidence: 99%

Perspectives in Liquid-Crystal-Aided Nanotechnology and Nanoscience

2019

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The research field of liquid crystals and their applications is recently changing from being largely focused on display applications and optical shutter elements in various fields, to quite novel and diverse applications in the area of nanotechnology and nanoscience. Functional nanoparticles have recently been used to a significant extent to modify the physical properties of liquid crystals by the addition of ferroelectric and magnetic particles of different shapes, such as arbitrary and spherical, rods, wires and discs. Also, particles influencing optical properties are increasingly popular, such as quantum dots, plasmonic, semiconductors and metamaterials. The self-organization of liquid crystals is exploited to order templates and orient nanoparticles. Similarly, nanoparticles such as rods, nanotubes and graphene oxide are shown to form lyotropic liquid crystal phases in the presence of isotropic host solvents. These effects lead to a wealth of novel applications, many of which will be reviewed in this publication. the observation of chirality from achiral molecules, resulting from sterically induced packing of the bent-core mesogens [10], such as ferroelectricity or the formation of helical superstructures in the B7 phase [14]. Thermotropic LCs are commonly constituted by single organic entities or mixtures thereof, which exhibit various mesophases at different temperatures or pressures [15], illustrated in Figure 1b. As the temperature rises, a typical thermotropic LC passes through higher ordered phases, also called soft crystals, the hexatic smectic phases with positional order as well as bond orientational order, through the fluid smectic phases (SmC and SmA), which exhibit both positional and orientational order, and finally to the nematic phase (N) with purely orientational order, into the isotropic phase. The number of different phases observed depends on the chemical composition, symmetry and order of the LC molecules. About 25 different thermotropic phases are known to date, and they are still increasing in number. Appl. Sci. 2019, 9, x FOR PEER REVIEW 2 of 47 unique effects of the observation of chirality from achiral molecules, resulting from sterically induced packing of the bent-core mesogens [10], such as ferroelectricity or the formation of helical superstructures in the B7 phase [14]. Thermotropic LCs are commonly constituted by single organic entities or mixtures thereof, which exhibit various mesophases at different temperatures or pressures [15], illustrated in Figure 1b. As the temperature rises, a typical thermotropic LC passes through higher ordered phases, also called soft crystals, the hexatic smectic phases with positional order as well as bond orientational order, through the fluid smectic phases (SmC and SmA), which exhibit both positional and orientational order, and finally to the nematic phase (N) with purely orientational order, into the isotropic phase. The number of different phases observed depends on the chemical composition, symmetry and order of the LC molecules. About...

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Section: Introductionmentioning

confidence: 99%

Perspectives in Liquid-Crystal-Aided Nanotechnology and Nanoscience

2019

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“…Among the diverse class of nanoparticles, synthesis and applications of metal nanoparticles and upconversion nanoparticles are attaining much attention recently. [1][2][3][4][5][6][7][8][9][10] Engineering the properties of upconversion nano-and micro particles is gaining much momentum due to their wide spread applications diverse areas including biosensing, optical devices, temperature probes, deep tissue bioimaging, photovoltaics, super-resolution microscopy. [11][12][13][14][15][16][17] This particular unique class of materials can absorb multiple low energy photons via real energy levels and emit high energy radiation through the 4f electronic transitions.…”

Section: Introductionmentioning

confidence: 99%

Post annealing induced manipulation of phase and upconversion luminescence of Cr³⁺ doped NaYF₄:Yb,Er crystals

et al. 2019

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“…It is well-known that the surface-charge density (i.e., Coulomb/m 2 ) can be increased by the accumulation of positive-negative charge pairs on the metal surface. These surface charges exhibit a typical dipole-like charge pattern, whose resonance is governed by the combination of SPR and GPR modes (i.e., hybrid plasmon mode [84][85][86][87][88]). This gives rise to a stronger dipolar effect and enhances the field pattern around the gap and edge regions.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of a Metallic–Dielectric Nanorod Array by Nanosphere Lithography for Plasmonic Sensing Application

et al. 2019

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In this paper, a periodic metallic–dielectric nanorod array which consists of Si nanorods coated with 30 nm Ag thin film set in a hexagonal configuration is fabricated and characterized. The fabrication procedure is performed by using nanosphere lithography with reactive ion etching, followed by Ag thin-film deposition. The mechanism of the surface and gap plasmon modes supported by the fabricated structure is numerically demonstrated by the three-dimensional finite element method. The measured and simulated absorptance spectra are observed to have a same trend and a qualitative fit. Our fabricated plasmonic sensor shows an average sensitivity of 340.0 nm/RIU when applied to a refractive index sensor ranging from 1.0 to 1.6. The proposed substrates provide a practical plasmonic nanorod-based sensing platform, and the fabrication methods used are technically effective and low-cost.

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Recent Advances of Plasmonic Nanoparticles and their Applications

Cited by 173 publications

References 91 publications

Perspectives in Liquid-Crystal-Aided Nanotechnology and Nanoscience

Perspectives in Liquid-Crystal-Aided Nanotechnology and Nanoscience

Post annealing induced manipulation of phase and upconversion luminescence of Cr³⁺ doped NaYF₄:Yb,Er crystals

Fabrication and Characterization of a Metallic–Dielectric Nanorod Array by Nanosphere Lithography for Plasmonic Sensing Application

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Recent Advances of Plasmonic Nanoparticles and their Applications

Cited by 173 publications

References 91 publications

Perspectives in Liquid-Crystal-Aided Nanotechnology and Nanoscience

Perspectives in Liquid-Crystal-Aided Nanotechnology and Nanoscience

Post annealing induced manipulation of phase and upconversion luminescence of Cr3+ doped NaYF4:Yb,Er crystals

Fabrication and Characterization of a Metallic–Dielectric Nanorod Array by Nanosphere Lithography for Plasmonic Sensing Application

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Post annealing induced manipulation of phase and upconversion luminescence of Cr³⁺ doped NaYF₄:Yb,Er crystals