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Your search keyword '"Toshiaki Kondo"' showing total 8 results
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8 results on '"Toshiaki Kondo"'

1. Preparation of Polymer Nanofibers with Controlled Diameters by Continuous Spinning Using Ordered Anodic Porous Alumina as Spinneret

Author

Toshiaki Kondo, Takashi Yanagishita, Kenichi Kobayashi, Hideki Masuda, and Hiroaki Awata

Subjects
chemistry.chemical_classification, chemistry, Chemical engineering, 010405 organic chemistry, Nanofiber, General Chemistry, Polymer, 010402 general chemistry, Porosity, 01 natural sciences, Spinning, 0104 chemical sciences, Anode
Abstract

Polymer nanofibers with controlled diameters were formed by continuous spinning using ordered anodic porous alumina as a spinneret. The diameter of the polymer nanofibers could be controlled by cha...

Published
2019

2. Preparation of Polymer Nanofibers with Controlled Diameters by Continuous Spinning Using Ordered Anodic Porous Alumina as Spinneret.

Author

Takashi Yanagishita, Hiroaki Awata, Kenichi Kobayashi, Toshiaki Kondo, and Hideki Masuda

Abstract

Polymer nanofibers with controlled diameters were formed by continuous spinning using ordered anodic porous alumina as a spinneret. The diameter of the polymer nanofibers could be controlled by changing the hole size in the porous alumina membrane. In addition, the diameter of the obtained polymer nanofibers could be reduced by mechanical stretching in water at 80 °C. The obtained polymer nanofibers are expected to be used for various applications that require nanofibers with uniform diameters. [ABSTRACT FROM AUTHOR]

Published
2019
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3. Nanotemplate Prepared by Means of Vacuum Ultraviolet Patterning of Alkylsilane Self-assembled Monolayer on ITO Using a Porous Alumina Mask: Application to the Fabrication of Gold Nanoparticle Arrays

Author

Toshiaki Kondo, Takashi Ichii, Kuniaki Murase, Jeonghyeon Yang, Hiroyuki Sugimura, and Hideki Masuda

Subjects
Vacuum ultraviolet, Fabrication, genetic structures, Chemistry, Colloidal gold, Nanoparticle, Nanotechnology, Self-assembled monolayer, General Chemistry, Substrate (electronics), equipment and supplies, Porosity, Indium tin oxide
Abstract

Gold nanoparticles (AuNPs) have been arranged on a nanotemplate prepared on indium tin oxide substrate. This template, consisting of circular areas of about 200 nm in diameter hexagonally assembled...

Published
2012

4. Fabrication of Metal–Polymer Nanocomposite with Beaded Structures Using Ordered Anodic Porous Alumina Template

Author

Toshiaki Kondo, Hideki Masuda, and Kazuyuki Nishio

Subjects
chemistry.chemical_classification, Fabrication, Nanocomposite, Polymer nanocomposite, technology, industry, and agriculture, General Chemistry, Polymer, Anode, Metal deposition, Metal, Chemical engineering, chemistry, visual_art, parasitic diseases, visual_art.visual_art_medium, Porosity
Abstract

The fabrication of nanocomposites consisting of uniform-sized metal nanoparticles arranged at uniform intervals in a fibrous polymer matrix is described. The combined process of metal deposition in...

Published
2010

5. Fabrication of Au Fine Structures of Nanoparticles by Anodization of Purple Gold (AuAl2)

Author

Kazuyuki Nishio, Hideki Masuda, and Toshiaki Kondo

Subjects
chemistry.chemical_compound, Fabrication, chemistry, Chemical engineering, Anodizing, Oxalic acid, Analytical chemistry, Nanoparticle, General Chemistry, Substrate (electronics)
Abstract

The anodization of purple gold (AuAl2) in oxalic acid at low voltage (5 V) generated uniformly sized Au nanoparticles on the substrate. The surface of the sample showed a characteristic color after...

Published
2009

6. Surface-enhanced Raman Scattering on Ordered Gold Nanodot Arrays Prepared from Anodic Porous Alumina Mask

Author

Toshiaki Kondo, Hideki Masuda, Futoshi Matsumoto, and Kazuyuki Nishio

Subjects
symbols.namesake, Fabrication, Nanodot array, Chemistry, technology, industry, and agriculture, symbols, Nanotechnology, General Chemistry, Nanodot, Porosity, Raman scattering, Anode
Abstract

We show surface-enhanced Raman scattering (SERS) on an ordered array of Au nanodots prepared from a highly ordered anodic porous alumina mask. The intensity of SERS signals is strongly dependent on the height of the Au dots, indicating the existence of optimum geometrical structures for SERS. The fabrication process of the nanodot array described in the present study enables easy preparation of SERS substrates.

Published
2008

7. Antireflection Polymer Surface Using Anodic Porous Alumina Molds with Tapered Holes

Author

Toshiaki Kondo, Yasushi Kawamoto, Hideki Masuda, Takashi Yanagishita, Kenji Yasui, and Kazuyuki Nishio

Subjects
chemistry.chemical_classification, Surface (mathematics), chemistry, General Chemistry, Polymer, Conical surface, Composite material, Porosity, Anode
Abstract

Antireflection (AR) polymer structures composed of tapered conical pillars were fabricated using highly ordered anodic porous alumina. The shape of the holes in the anodic porous alumina was contro...

Published
2007

8. Nanotemplate Prepared by Means of Vacuum Ultraviolet Patterning of Alkylsilane Self-assembled Monolayer on ITO Using a Porous Alumina Mask: Application to the Fabrication of Gold Nanoparticle Arrays.

Author

Jeonghyeon Yang, Takashi Ichii, Kuniaki Murase, Hiroyuki Sugimura, Toshiaki Kondo, and Hideki Masuda

Abstract

Gold nanoparticles (AuNPs) have been arranged on a nanotemplate prepared on indium tin oxide substrate. This template, consisting of circular areas of about 200nm in diameter hexagonally assembled with an interval of 450 nm, was prepared by using an anodic porous alumina membrane mask and vacuum ultraviolet light at 172 nm. The site-selective immobilization of AuNPs was controlled with the electrostatic affinity difference of AuNPs toward functionalized surface characterized by self-assembled monolayer. [ABSTRACT FROM AUTHOR]

Published
2012
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