Fabrication of Gold Nanodot Array on Plastic Films for Bio-sensing Applications

Abstract

In this paper, authors propose a new method to fabricate metal nanodot array on a plastic film. This process comprises three steps; firstly, a substrate is deposited with metal. Then, a nanodot array is formed on the substrate surface by thermal dewetting. Finally, the nanodot array is transferred to a plastic film. Using the proposed method, gold nanodot array is fabricated on epoxy films. Furthermore, in this paper, the effects of process parameters such as annealing temperature, substrate material and plastic material on dot transfer ratio to a plastic film are studied. The mechanism of dot transfer from a substrate to a plastic film is also discussed in details. The transfer ratio increases as the annealing temperature is higher. Silicon substrate results slightly higher contact angle and transfer ratio than quartz glass substrate. Araldite rapid epoxy decreases transfer ratio while SpeciFix-20 epoxy increases transfer ratio when the annealing temperature is higher. Highest transfer ratios of 95% and 87% were achieved when transferring nanodot array from silicon substrate and quartz glass substrate to Araldite rapid epoxy film, respectively. Highest transfer ratio of 91% was achieved when transferring nanodot array from quartz glass substrate to SpeciFix-20 epoxy.

Aggregation effect on absorbance spectrum of laser ablated gold nanoparticles

“…There is no secondary peak occurs at longer wavelength. This simulation agrees with prior researches on basic optical properties of gold nanoparticles [1][2][3]. Therefore, we can conclude that although fabricated gold nanoparticles have large size distribution, the plasmon peak does not strongly influence by size distribution of gold nanoparticles and there is no secondary plasmon peak that occurs.…”

“…One of potential nanoparticles is gold nanoparticles [1,2]. There are a lot of researches have been done to study the properties of gold nanoparticles.…”

“…There are a lot of researches have been done to study the properties of gold nanoparticles. One unique property of gold nanoparticles is plasmon, which is energy of oscillating electrons inside gold nanoparticles due to external electromagnetic field [1,2]. In the case, the plasmon is well known as localized surface plasmon, which exists in limited plasmon region surrounding gold particle [2,3].…”

Nanoplastic deformation on Ti–39 at.% Al single crystals for manipulation of every single γ lamella

“…Nanoscale periodic architectures such as nanopillar arrays, nanowire arrays and nanodot arrays have recently attracted much attention for both scientific and practical purposes [1][2][3]. Moreover, nanograte structures have been widely adopted for both optical fibers and integrated optical devices such as waveguide gratings used for light coupling [4], interferometers and light filters.…”

Fabrication of a SERS Substrate of Gold Nanoparticles by Dewetting

“…In Figure 2b, there is a noticeable increase in the intensity of the spectra for Rhodamine on the gold substrates at different thicknesses. The substrate in which were deposited a film of 5 nm of thickness shows a greater increase in the spectra as it is known that the properties of SPR depend on the shape, size, arrangement of the nanoparticles and the dielectric constant of the medium surrounding the nanoparticles [3].In summary, we fabricated a SERS substrate by a simple method, a thermal dewetting of a thin film of gold. The Raman spectra showed that the SERS substrates that can be used reliably for the detection of analytes at low concentrations (210 M).…”