Controlling optical properties of periodic gold nanoparticle arrays by changing the substrate, topologic shapes of nanoparticles, and polarization direction of incident light

Gold nanoparticles are widely used as high efficient photon–thermal energy converters in a broad range of applications. This paper presents a theoretical investigation on using the optothermal properties of gold nanoparticle arrays to generate nanoscale molten and rubbery regions on the surface of an amorphous polymeric film. Nanoparticles are assumed to be embedded in a transparent silica layer and illuminated with a 7.5 ns pulsed laser at 532 nm. Simulation results are presented for systems with single gold nanoparticles, dimers and chains. Both electromagnetic and thermal interaction between nanoparticles are found to be important factors in determining the result of surface processing. This effect allows us to control the shape and spatial characteristics of the phase transmitted regions with various parameters such as particles size, incident light fluence, polarization and direction, interparticle distance and chain length.

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Dielectrophoretic Assembly of Gold Nanoparticle Arrays Evaluated in Terms of Room-Temperature Resistance

IEICE Transactions on Electronics ◽

10.1587/transele.2019ecs6011 ◽

2020 ◽

Vol E103.C (2) ◽

pp. 62-65

Author(s):

Yoshinao MIZUGAKI ◽

Makoto MORIBAYASHI ◽

Tomoki YAGAI ◽

Masataka MORIYA ◽

Hiroshi SHIMADA ◽

...

Keyword(s):

Gold Nanoparticle ◽

Room Temperature ◽

Nanoparticle Arrays ◽

Temperature Resistance

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Gold Nanoparticle Arrays for Cancer Treatment and Diagnosis

Menoufia Journal of Electronic Engineering Research ◽

10.21608/mjeer.2010.66529 ◽

2010 ◽

Vol 20 (2) ◽

pp. 184-198

Author(s):

N. H. Ismail ◽

A .A . Nasser ◽

N. Mabrouk

Keyword(s):

Cancer Treatment ◽

Gold Nanoparticle ◽

Nanoparticle Arrays ◽

Treatment And Diagnosis

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Three-Dimensional Finite-Difference Time-Domain Method Modeling of Nanowire Optical Probe

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.602-605.3359 ◽

2014 ◽

Vol 602-605 ◽

pp. 3359-3362

Author(s):

Chun Li Zhu ◽

Jing Li

Keyword(s):

Finite Difference ◽

Time Domain ◽

Finite Difference Time Domain ◽

Incident Light ◽

Near Field ◽

Three Dimensional ◽

Polarization Direction ◽

Near Field Imaging ◽

Difference Time ◽

Field Imaging

In this paper, output near fields of nanowires with different optical and structure configurations are calculated by using the three-dimensional finite-difference time-domain (3D FDTD) method. Then a nanowire with suitable near field distribution is chosen as the probe for scanning dielectric and metal nanogratings. Scanning results show that the resolution in near-field imaging of dielectric nanogratings can be as low as 80nm, and the imaging results are greatly influenced by the polarization direction of the incident light. Compared with dielectric nanogratings, metal nanogratings have significantly enhanced resolutions when the arrangement of gratings is perpendicular to the polarization direction of the incident light due to the enhancement effect of the localized surface plasmons (SPs). Results presented here could offer valuable references for practical applications in near-field imaging with nanowires as optical probes.

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