Optical dichroism of lithographically designed silver nanoparticle films

Gotschy, W.; Vonmetz, K; Leitner, A.; Aussenegg, F. R.

doi:10.1364/ol.21.001099

Cited by 144 publications

(96 citation statements)

References 12 publications

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“…b ¼ c), for which the same sensitivity increase is reached already at a=c % 3. Spheriodal Ag nanoparticles with high aspect ratios have been manufactured by electron-beam lithography [22,23] and, recently, by colloidal synthesis [24], although their applicability as biochemical sensors has apparently not yet been explored. Interestingly, the NSL fabricated samples investigated in [6] had aspect ratios of the order 2 (in-plane width %100 nm, height %50 nm) corresponding to an approximate sensitivity increase of $62% relative to the spherical case.…”

Section: Resultsmentioning

confidence: 99%

Modeling the optical response of nanoparticle-based surface plasmon resonance sensors

Käll

2002

Sensors and Actuators B: Chemical

170

114

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We model the optical response of surface plasmon resonance (SPR) sensors based on colloidal metal nanoparticles using extended Mie theory. The theoretical description includes the particle adsorption layer, the surrounding medium as well as particle-particle and particlesubstrate electromagnetic coupling effects. We obtain quantitative agreement with recently reported experimental results on gold nanoparticle SPR sensors, indicating the possibility to perform accurate a priori estimates of detector sensitivity for different particle sizes and compositions in a variety of electromagnetic environments. The possibility to increase sensitivity by using non-spherical silver particles as SPR sensors is discussed. #

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Section: Resultsmentioning

confidence: 99%

Modeling the optical response of nanoparticle-based surface plasmon resonance sensors

Käll

2002

Sensors and Actuators B: Chemical

170

114

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“…Au can become a good catalyst when present as small clusters [342] while as bulk matter it is the most inert material known to mankind [343]. Optical (see for instance plasmon excitations in small Ag particles [344,345]) and electronic properties (photoluminescence from quantum dots [346,347] and magnetism in metal clusters [348]) become widely adjustable through the particle size. Many of the physical and chemical properties can so far only be investigated with integrating techniques needing a considerable density of uniform particles.…”

Section: Discussionmentioning

confidence: 99%

Microscopic view of epitaxial metal growth: nucleation and aggregation

Brune

1998

Surface Science Reports

922

140

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“…The recombinant polypeptide 17H6 [MGH 10 SSGHIHM (AAAQEAAAAQAAAQAEAAQAAQ) 6 AGGYGGMG] was expressed from an E. coli expression host and purified by metal chelate affinity chromatography, as described previously. [44,45 ] The assembled nanostructure of 17H6 is strongly dependent on its microenvironment, and can be controlled by changes in the initial solution conditions, in which the assembly is conducted, particularly pH and temperature.…”

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confidence: 99%

One‐Dimensional Gold Nanoparticle Arrays by Electrostatically Directed Organization Using Polypeptide Self‐Assembly

et al. 2009

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The study of interactions between particles organized in a linear configuration is interesting from a quantum mechanical perspective, and the anisotropic properties of linear assemblies is of potential interest for the development of solid-state devices. [1][2][3] This anisotropy may be manifested as a difference in the magnetization and coercivity obtained in a magneticnanoparticle array when a field is applied along the chain or orthogonal to it. [4,5 ] Nonlinear electrical characteristics [3] or dichroism in the optical spectra with longitudinal and transverse polarizations of light [6,7 ] in metal nanoparticle arrays are other examples of such anisotropy, and the construction of such arrays would offer opportunities in multiple applications. Engineering matter at submicron length scales has been an area largely dominated by top-down methodologies. Control of interparticle spacing in metal-nanoparticle arrays by using techniques such as electron beam lithography has been found to have a dramatic impact on the optical response of the nanoparticle assembly, [8][9][10] ] and has implications in fields such as plasmonics [11] and energy transport. [12,13 ] The use of templates such as carbon nanotubes [14] and linear pores[15] to construct one-dimensional nanostructures has been demonstrated previously. In addition, polymers have recently begun to play an increasingly active role as elements that can reproducibly direct the arrangement of nanoparticles into functional geometries. [16,17 ] Self assembling systems offer convenient yet powerful bottom-up strategies for the creation of nanostructures that can be deployed in the realization of functional nanoscale devices. [18,19 ] The utilization of biomolecules such as DNA, [3, 20 -24 ] and protein-based materials [25][26][27] or viruses [28,29 ] to dictate the organization of nanoparticles has been shown to be an effective and robust paradigm. The use of peptide-based structures [30,31 ] in nanotechnology confers numerous advantages such as the specification of assembled nanostructure by changes in the primary sequence of the peptide, as well as the adoption of various hierarchical morphologies **

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Optical dichroism of lithographically designed silver nanoparticle films

Cited by 144 publications

References 12 publications

Modeling the optical response of nanoparticle-based surface plasmon resonance sensors

Modeling the optical response of nanoparticle-based surface plasmon resonance sensors

Microscopic view of epitaxial metal growth: nucleation and aggregation

One‐Dimensional Gold Nanoparticle Arrays by Electrostatically Directed Organization Using Polypeptide Self‐Assembly

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