Vol.3 No.2 2010

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Research paper : Products and evaluation device of cosmetics for UV protection (Y. Takao et al.)−144−Synthesiology - English edition Vol.3 No.2 (2010) due to the different objectives of the organizations, but as a result, a trusting relationship was established for the core research of ceramic powder, including the new composite particles and morphological control[2].< Plans for product realization of the powder materials >While certain advancements were obtained for the ceramic powder unit operation at the level of Type 1 Basic Research[6][7], we were unable to realize the actual product or the implementation contract for the UV-protective cosmetics, and failed to achieve the level of Type 2 Basic Research. Neither the local material company[15] nor the product manufacturer[17] had much experience in signing an implementation contract. They also were hampered by intra-company barriers such as the inability to fund the project at the start, as well as the psychological barrier of whether or not to place emphasis on highly reproducible synthesis condition. From such differences in the objectives of the organizations, a crisis occurred in the collaboration and the project fell into the valley of death[3]-[7].In general, the social elements such as the adjustment of organizational interests may not be necessarily solved by the inductive method of logic and strategy. The necessity of economic methods (such as the LCC, environmental risk science, and Pigovian tax) that internalize the technological external diseconomy is proposed, including increasing the number of elements, complicating the relationship, or temporarily suspending the project[8]-[13]. The adequacy of the synthetic methodology is discussed in chapter 5.Based on this thinking, in 2002, we constructed a loose information provision relationship with the manufacturer by temporarily “sublating[5]” or suspending AIST’s immediate profit and system, such as the implementation contract, as shown in Fig. 1(b). Using this cooperative relationship, Fig. 7 Technological result: Variations in morphological control(a) Sphere-coated composite particle: Spherical titania nanoparticles are composited evenly onto the mica surface.(b) Film-coated composite particle: Titania film is composited evenly on the mica surface. To show the film clearly, the FESEC photo shows the area where the film has flaked off.(c) Needle-coated composite particle: Needle-shaped titania particles are composited evenly on the mica surface.(d) Solid mica grain: It is also possible to create hollow structure and solid/hollow titania grains.GrainNeedleFilmSphereSericite[15]Droplets100 nm100 nm100 nm100 µm1 µm10 µmSphereFilm boundary(b)(a)(c)(d)Slurry~solution state100 ºC~several 1000 ºCFew~several 10 µm1 µmNormal stressis changedPowderlayerShear force changed linearlyaccording to normal stressNormal stress (N/cm2)Shear force (N/cm2)305050604080Clone powderY=0.5X+25θ=Angle of internal frictionPowder layer in 3DPowder layer in 3D(c)(b)(a)Fig. 8 Technological solution: Establishment of a simple quantification method for the angle of internal friction(a) Central part of the assessment device that was realized as a product by the AIST-approved venture.(b) Schematic diagram of the new least-square approximation mode.(c) Assessment parameter: angle of internal friction

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