Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Kyoichi Sasaki"'
Autor:
Kiminori Itoh, Kyoichi Sasaki, Hideki Kawai, Tatsuo Adachi, Xiao Min Chen, Masayuki Murabayashi, Toshihiko Nagamura
Publikováno v:
Talanta. 65:1071-1077
A composite optical waveguide (OWG) composed of a 10-18nm thick titanium dioxide (TiO(2)) film sputtered on a conventional K(+)-doped optical waveguide was first applied to detect transient absorption of organic dyes in ultrathin polymer films upon e
Publikováno v:
Optics Communications. 205:107-112
Ultrafast all-optical reflectance control was achieved by photoinduced complex refractive index changes in thin poly(vinyl alcohol) (PVA) films containing water-soluble phthalocyanine at the incident angle corresponding to a sharp guided mode resonan
Autor:
Akihiro Tanimura, Kazuya Takanashi, Hiroshi Shinozaki, Kyoichi Sasaki, Takashi Hayashi, Hideyuki Aoki
Publikováno v:
Journal of the Society of Materials Science, Japan. 50:630-633
Chemical processing of ZrO2-coated BaTiO3 composites was investigated with the surface modification through the hydrolysis of zirconium alkoxide on the surfaces of BaTiO3 particles. It was clarified from the BET measurement and the SEM observation th
Autor:
Toshihiko Nagamura, Kyoichi Sasaki
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 344:199-204
A novel all-optical parallel switching device was demonstrated by using photoinduced changes of a complex refractive index in a guided mode thin film composed of silver and polymer containing photochromic dyes. An incident angle of a probe beam was s
Publikováno v:
Journal of the European Ceramic Society. 19:1011-1016
(Ba 0·7 Sr 0·3 )TiO 3 powders and thin films were prepared using alkoxide-hydroxide route. Solutions of Ba and Sr hydroxides dissolved in methanol were reacted with Ti-isopropoxide under conditions of stirring at room temperature for 15 h, and then
Autor:
Kyoichi Sasaki, Toshihiko Nagamura
Publikováno v:
Journal of Applied Physics. 83:2894-2900
An all-optical ultrafast switch which operates at a wide wavelength range has been demonstrated based on photoinduced changes of real and/or imaginary parts of complex refractive index in a composite thin film of silver and polymer containing photoch
Autor:
Kyoichi Sasaki, Toshihiko Nagamura
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 294:145-148
Highly sensitive polarized absorption measurement by the optical waveguide (OWG) detection system was made to analyze the orientation of photogenerated radicals in Langmuir-Blodgett (LB) films. The extinction coefficient changes upon photoexcitation
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 295:5-10
Transient species upon pulsed laser excitation of ultrathin Langmuir-Blodgett (LB) films was detected sensitively by the optical waveguide (OWG) method. Amphiphilic tetraphenylporphyrin in mixed LB films with dioctadecyldimethylammonium at 1:5 and 1:
Autor:
Kyoichi Sasaki, Toshihiiko Nagamura
Publikováno v:
Journal of Photopolymer Science and Technology. 9:79-86
Highly sensitive polarized absorption measurement by the optical wave-guide detection system was proposed to analyze the optical characterestics of photoresponsive polymer thin films. The extinction coefficients of specific ion-pair charge-transfer c
Publikováno v:
Thin Solid Films. 243:660-663
Langmuir-Blodgett (LB) films and ultrathin polymer films containing 4,4′-bipyridinium tetrakis[3,5-bis(trifluoromethyl) phenyl]borate (TFPB − ) were deposited on the surface of an optical waveguide (OWG) glass. Colour changes due to photoinduced