SiO2–Au core–shell petal-like structure with controlled bridge length

Saito, Shiomi; Sannomiya, Takumi; Miyamoto, Takumi; Isobe, Toshihiro; Nakajima, Akira; Matsushita, Sachiko

doi:10.1016/j.colsurfa.2013.08.034

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…Because the dip and withdraw process has the advantage that the velocity of the meniscus moving along with the substrate can be controlled as desired [16][17][18][19], it is expected that the disadvantage in the fabrication process mentioned above could be overcome. For more important and usually ignored point, this approach may lead us to increase the yield constant of the specific structures.…”

Section: Introductionmentioning

confidence: 99%

Microfabrication for a polystyrene quadrupole by template-assisted self-assembly

Takahashi

Matsutani

Dake

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Introductionmentioning

confidence: 99%

Microfabrication for a polystyrene quadrupole by template-assisted self-assembly

Takahashi

Matsutani

Dake

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Optical performance of Au hemispheric sub-microstructure on polystyrene quadrumer

Takahashi

Matsutani

Dake

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Metal Nanostructures Fabricated by the Difference of Interfacial Energy at a Dielectric/Metal Interface

Tatsuno

Okamoto

Ezaki

et al. 2015

Bulletin of the Chemical Society of Japan

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Due to its high sensitivity to changes in the environmental dielectric constant, localized surface plasmon resonance (LSPR) is utilized for various sensing materials. However, because of this high sensitivity, it is difficult to detect a specific substance among mixed materials. Here, we enhanced the size selectivity using a metal nanostructure. By preparing a cup-like metal nanostructure that is the same size as a virus, this cup-like structure may be able to capture a virus, and thus the LSPR characteristics would change. This phenomenon would not occur for larger materials, such as animal cells, i.e., this cup-like structure may have selectivity for material size. In this paper, we fabricated metal nanocups out of two-dimensional colloidal crystals by exploiting the difference of interfacial energy at a dielectric/metal interface. The size selectivity and plasmon characteristics of the fabricated metal nanocups were investigated with model viruses, i.e., virus-like polystyrene (PSt) nanoparticles with almost the same dielectric constant and size as a virus. As a result, the transmission spectra show a 20-nm red shift in the visible light range before and after adsorption of the model virus. Field emission scanning electron microscopy (FE-SEM), optical microscopy, UV–vis spectrometry and contact angle measurement results are also discussed.

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SiO2–Au core–shell petal-like structure with controlled bridge length

Cited by 4 publications

References 30 publications

Microfabrication for a polystyrene quadrupole by template-assisted self-assembly

Microfabrication for a polystyrene quadrupole by template-assisted self-assembly

Optical performance of Au hemispheric sub-microstructure on polystyrene quadrumer

Metal Nanostructures Fabricated by the Difference of Interfacial Energy at a Dielectric/Metal Interface

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