A single bottom facet outperforms random multifacets in a nanoparticle-on-metallic-mirror system

Devaraj, Vasanthan; Lee, Jongmin; Adhikari, Samir; Kim, Minjun; Lee, Dong Hoon; Oh, Jin‐Woo

doi:10.1039/d0nr07188a

Cited by 19 publications

(22 citation statements)

References 53 publications

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“…Facets in an NP will play a vital role in enhancing gap mode-based |E/E 0 | characteristics. Dipole mode properties and better |E/E 0 | strength at resonance position can be achieved with fewer facets in NPs [ 45 ]. The presence of more facets in NP deteriorates the plasmonic properties.…”

Section: Resultsmentioning

confidence: 99%

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Engineering Efficient Self-Assembled Plasmonic Nanostructures by Configuring Metallic Nanoparticle’s Morphology

Devaraj

Lee

Kim

et al. 2021

IJMS

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We reveal the significance of plasmonic nanoparticle’s (NP) shape and its surface morphology en route to an efficient self-assembled plasmonic nanoparticle cluster. A simplified model is simulated in the form of free-space dimer and trimer nanostructures (NPs in the shape of a sphere, cube, and disk). A ~200% to ~125% rise in near-field strength (gap mode enhancement) is observed for spherical NPs in comparison with cubical NPs (from 2 nm to 8 nm gap sizes). Full-width three-quarter maximum reveals better broad-spectral optical performance in a range of ~100 nm (dimer) and ~170 nm (trimer) from spherical NPs as compared to a cube (~60 nm for dimer and trimer). These excellent properties for sphere-based nanostructures are merited from its dipole mode characteristics.

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Section: Resultsmentioning

confidence: 99%

“…As seen from Equation (4), the surface charge density

is given as (n x

E x + n y

E y + n z

E z ) [ 16 , 20 , 31 , 44 , 45 ]. Utilizing this surface charge mapping approach, we directly extracted the 3DSCM from our simulations using the COMSOL Multiphysics tool (Wave optics module).…”

Section: Modeling Informationmentioning

confidence: 99%

Engineering Efficient Self-Assembled Plasmonic Nanostructures by Configuring Metallic Nanoparticle’s Morphology

Devaraj

Lee

Kim

et al. 2021

IJMS

Self Cite

View full text Add to dashboard Cite

show abstract

“…Facets in an NP will play a vital role in enhancing gap mode-based |E/E0| characteristics. Dipole mode properties and better |E/E0| strength at resonance position can be achieved by having fewer facets in NPs [45]. The presence of more facets in NP deteriorates the plasmonic properties.…”

Section: Resultsmentioning

confidence: 99%

“…In other words, plasmonic nanostructures with dominant dipole mode characteristics can perform better than higher-order mode(s). With recent developments in spherical NPs, if we can precisely synthesize single faceted spherical NPs (rest surface being smoother), near field strength can be boosted further with a slower deterioration rate extending to larger gap sizes [45]. In addition, future studies involving plasmon damping (related to charge carriers in metals), can open up further understanding in nanoplasmonics properties [49].…”

Section: Resultsmentioning

confidence: 99%

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Designing an Efficient Self-Assembled Plasmonic Nanostructures from Spherical Shaped Nanoparticles

Devaraj¹,

Lee²,

Kim³

et al. 2021

Preprint

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We reveal the significance of plasmonic nanoparticle’s (NP) shape and its surface morphology en route to an efficient self-assembled plasmonic nanoparticle cluster. A simplified model is simulated in the form of free-space dimer and trimer nanostructures (NPs in shape of sphere, cube, and disk). A ~ 200 % to ~ 125% raise in near field strength (gap mode enhancement) is observed for spherical NPs in comparison with cubical NPs (from 2 nm to 8 nm gap sizes). Full-width three-quarter maximum reveals better broad-spectral optical performance in a range of ~ 100 nm (dimer) and ~ 170 nm (trimer) from spherical NPs as compared to a cube (~ 60 nm for dimer and trimer). These excellent properties for sphere-based nanostructures are merited from its dipole mode characteristics.

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Novel Strategy towards Efficiency Enhancement of Flexible Optoelectronic Devices with Engineered M13 Bacteriophage

Kim,

Kim

et al. 2024

Small Structures

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Plasmonic nanostructures, which exhibit notable localized surface plasmon resonance (LSPR) properties, are a promising approach for improving the efficiency of fiber‐shaped dye‐sensitized solar cells (FDSSCs) and flexible organic light‐emitting diodes (FOLEDs). Herein, novel plasmonic nanostructure is successfully synthesized via the self‐densification of gold nanoparticles (Au NPs) onto a genetically engineered M13 bacteriophage template. The synthesized Au NP‐M13 bio‐nanostructure show extraordinary gap‐plasmon effects and significantly enhanced LSPR properties compared to randomly dispersed Au NPs for both solid‐state FDSSCs (SS‐FDSSCs) and FOLEDs. Briefly, a power conversion efficiency (PCE) increment of 40.7% is recorded for the Au metallic NPs‐anchored M13 bacteriophage (Au NPs‐M13) enhanced SS‐FDSSCs; whereas an external quantum efficiency (EQE) increment of 47.2% is achieved for the Au NPs‐M13 enhanced FOLEDs.

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A single bottom facet outperforms random multifacets in a nanoparticle-on-metallic-mirror system

Abstract: Highly efficient nanoparticle-on-metallic-mirror (NPOM) systems with a large gap size exhibiting good plasmonic enhancement are desirable for numerous practical applications. Careful, explicit design optimization strategies are required for preparing NPOMs,...

Cited by 19 publications

References 53 publications

Engineering Efficient Self-Assembled Plasmonic Nanostructures by Configuring Metallic Nanoparticle’s Morphology

Engineering Efficient Self-Assembled Plasmonic Nanostructures by Configuring Metallic Nanoparticle’s Morphology

Designing an Efficient Self-Assembled Plasmonic Nanostructures from Spherical Shaped Nanoparticles

Novel Strategy towards Efficiency Enhancement of Flexible Optoelectronic Devices with Engineered M13 Bacteriophage

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