Keita Sakakibara

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A ceramic-made reactor is used for the generation of high-frequency surface discharge to produce a planar plasma region over its surface, and the gas containing pollutants is contacted to this region to be exposed to radicals (OH, O, O/sup 3/, N, NH/sub 2/, H, etc.) to be decomposed or oxidized. this process has a wide application range from diesel engines,(More)
Halloysite is naturally available clay mineral with hollow cylindrical geometry and it is available in thousands of tons. Silver nanorods were synthesized inside the lumen of the halloysite by thermal decomposition of the silver acetate, which was loaded into halloysite from an aqueous solution by vacuum cycling. Images of individual ca. 15 nm diameter(More)
Controlling the organization of molecular building blocks at the nanometer level is of utmost importance, not only from the viewpoint of scientific curiosity, but also for the development of next-generation organic devices with electrical, optical, chemical, or biological functions. Self-assembly offers great potential for the manufacture of(More)
Right-handedness derived from bisporphyrins attached to a cellotriose backbone at O-6 and O''-6 positions is revealed for the first time. This cellotriose is proposed as a model of alternatingly functionalized cellulosics, which have promising properties for applications in optoelectronics and molecular receptors owing to the chirality and rigid backbone(More)
Detection and quantification of biologically active analytes is of paramount importance. These substances, whether therapeutic or harmful, are routinely evaluated for a range of properties, such as pharmaceutical activity and chemical toxicity. Such analyses are routinely performed in a variety of scientific disciplines, including drug discovery,(More)
Linear π-gelators self-assemble into entangled fibers in which the molecules are arranged perpendicular to the fiber long axis. However, orientation of gelator molecules in a direction parallel to the long axes of the one-dimensional (1-D) structures remains challenging. Herein we demonstrate that, at the air-water interface, an(More)
Redox-active Langmuir-Blodgett (LB) films containing dihydrophytyl ferrocenoate (DFc) and beta-carotene (betaC) were fabricated by use of 6-O-dihydrophytylcellulose (DHPC) as a matrix. A mixture of DFc-DHPC formed a stable monolayer. Atomic force microscopy images revealed that the DFc molecules were dispersed uniformly throughout the surface in the ratio(More)
In this article, we propose a novel methodology for the formation of monodisperse regularly sized disks of several nanometer thickness and with diameters of less than 100 nm using Langmuir monolayers as fabrication media. An amphiphilic triimide, tri-n-dodecylmellitic triimide (1), was spread as a monolayer at the air-water interface with a water-soluble(More)
In contrast to the success in artificial DNA- and peptide-based nanostructures, the ability of polysaccharides to self-assemble into one-, two-, and three-dimensional nanostructures are limited. Here, we describe a strategy for designing and fabricating nanorods using a regioselectively functionalized cellulose derivative at the air-water interface in a(More)
Two-dimensional effect of trapped electrons on device characteristics are calculated using a two-dimensional device simulator including a trap-filling current model. As the result of simulation, FN current is suppressed when the neutral trap density is over 10/sup 19/ cm/sup -3/. The results correspond to the endurance characteristics of flash memories.