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将来の素材文明における灯火概念に関する素材文化学的研究 -夜と昼を受容する電子ローソクの概念の提出- Materials Culturology Discussions on The Concept of "Light" in Future Materials Civilization -Presentation of The Concept of Electric Candle Accepting "Night and Day" as They are 牧野, 和孝 MAKINO, Kazutaka open access Electric Candle Water Decomposition Catalysts Light Emitting Diode Future Materials Civiligation In this paper, in order to create a new concept of "light" in future materials civilization, the light technologies in various pre-modern materials civilizations accepting "night and day" as they are, were taken into notice and discussed from a point of materials civiliqation. As the result, "electric candle" was conceptually presented as a new concept "light" accepting "night and day" as they are. And the feasibility was fundamentally discussed from a point of rnaterials engineering and cuIturology. The following results were obtained. i) In various pre-modern materials civilizations accepting "night and day" as they are, natural regenerable materials can be pointed out to be chosen as light materials and satisfy the condition of the keeping the consumption not to increase enermously. ii) The "electric candle" accepting "night and day" as they are, is operated by use of water and sun light only as energy sources. And it satisfies the condtion of i). iii) The "electric candle" accepting "night and day" as they are, is assembled by three of water decomposition by sun light, hydrogen fuel cell, and white color light emitting diode. iv) SiTi03, Sro87SPbo125Ti03, and Sro75Pbo"Ti03, are selected as optimum water decomposition catalysts and are assembled as the catalyst elements by pinconjunction. v) Thin film of ZrLy ,Ca y Ge,02, (y = 0.2-0.3, z = 0.18-0.20) is pointed out to be able to be used as soild electrolyte operating at normal temperature. vi) White color light emitting diode is realized by the combination of GaAs(red), GaP 1.o"N o25(green) , and Zn L005Mgoo,Se 1.o05Soo5(blue). vii) Necessary dimensions of electric light to emit white color light of 1 candle for two hours in night after being irradiated by daylight for seven hours are estimated as follows; Hydrogen fuel cell, white color light emitting diode and water decomposition part are respectively 5cm X 2cm X 2cm, 1.0cm ¢ X 0,65m, and 4,Ocm ¢ X 150cm. viii) The concept of "electric candle" can be taken to indicate the "proto type" of white colour light in futue materials civilization. 日本素材物性学会 1997-08-01 jpn journal article VoR http://hdl.handle.net/10295/1211 https://air.repo.nii.ac.jp/records/1264 素材物性学雑誌 10 1 19 35 https://air.repo.nii.ac.jp/record/1264/files/sozai10a3.pdf application/pdf 1.0 MB 2017-02-16