N
Naoko Asakuma
Researcher at Arkema
Publications - 11
Citations - 1191
Naoko Asakuma is an academic researcher from Arkema. The author has contributed to research in topics: Thin film & Amorphous solid. The author has an hindex of 7, co-authored 11 publications receiving 1181 citations.
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Crystallization and Reduction of Sol-Gel-Derived Zinc Oxide Films by Irradiation with Ultraviolet Lamp
TL;DR: In this paper, structural changes in sol-gel films with photo-irradiation were investigated using zinc oxide (ZnO) derived from zinc acetate, and the exposure of the films to an ultraviolet lamp induced hexagonal ZnO crystals in a relatively dense amorphous structure.
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Ultraviolet-reduced reduction and crystallization of indium oxide films
TL;DR: In this paper, structural changes stimulated by ultraviolet (UV) irradiations of sol-gel-derived indium oxide thin films were investigated and the results of x-ray photoelectron spectroscopy revealed that charge transfer from O2− to In3+ was induced by the incoherent and the coherent UV photons.
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Low-Temperature Synthesis of ITO Thin Films Using an Ultraviolet Laser for Conductive Coating on Organic Polymer Substrates
TL;DR: The resistivity of sol-gel-derived indium tin oxide (ITO) films effectively decreased with crystallization by exposure to a low fluence UV beam (10-20 mJ/cm2) from an ArF laser as discussed by the authors.
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Photocrystallization of amorphous ZnO
Naoko Asakuma,Hiroshi Hirashima,Hiroaki Imai,Toshimi Fukui,Ayako Maruta,Motoyuki Toki,Koichi Awazu +6 more
TL;DR: In this article, structural changes stimulated by UV light irradiation for sol-gel-derived amorphous ZnO were investigated and it was deduced that cleavage of the Zn-O network with electronic excitation and subsequent oxidation with activated oxygen species are essential for the formation of the ordered structure from the amorphou phase.
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Effects of introduction of sodium and water on second-order nonlinearity in poled synthetic silica glass
Hiroaki Imai,S. Horinouchi,Naoko Asakuma,Kazuhiro Fukao,Daizaburo Matsuki,Hiroshi Hirashima,Keisuke Sasaki +6 more
TL;DR: In this article, the second harmonic generation from pure silica glasses was investigated to clarify the effects of the impurities on the second-order nonlinearity, and the origin of the non-linearity was tentatively assumed to be due to a frozen electric field created by charge separation with protonic conduction.