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Dielectric material coating process on the surface of epoxy mold compound has been successfully developed for fan-out wafer level packaging. This paper introduces the pretreatment process and conditions required for dielectric coating, coating process and the studies of dielectric material coating conformality and adhesiveness on epoxy mold compound, silicon and copper surface. The DOE of these film...
ZnO single nanowire photodetectors have been measured in different ambient conditions in order to understand and control adsorption processes on the surface. A decrease in the conductivity has been observed as a function of time when the nanowires are exposed to air, due to adsorbed O2/H2O species at the nanowire surface. In order to have a device with stable characteristics in time, thermal desorption...
TiO2 particles or casted thin films are treated with plasma CVD using the mixture of tantalum alkoxide and nitrogen gas or copper(II) acetylacetonate to improve the photocatalyst activities of TiO2 irradiated by visible light. The layer formed on the surface of the TiO2 after plasma treatment is composed of some species characterized by XPS measurement. The visible-light activity are shown after the...
One of the research topics in holography is CGH (computer-generated hologram) that generates hologram by calculation. In CGH, 3-D objects were historically described by aggregate of point light sources. However, some methods are recently developed, in which 3-D objects are described by other ways in order to reconstruct more realistic or artistic 3-D objects. We introduce a study for the topic. In...
Low cost and low temperature fabrication process is required for TSV. In this study, we propose a low temperature deposition of barrier and copper seed layers by wet process only using electroless plating. Moreover, we use AuNPs as a catalyst which is densely adsorbed on SiO2 sidewall of TSV with SAM. We succeeded in conformal deposition of barrier and seed layers, and this method is effective for...
In this paper, we describe our high-speed glossy surface scanner, which estimates surface reflectance properties for conveying objects. Using the glossy surface scanner, a single image, which was condensed with reflected rays of light in different directions using a cylindrical lens, is processed on a high-speed vision platform. Surface reflectance properties estimated at 1000 fps were realized in...
Purpose: As a continuation of a previous paper, the report demonstrates the various possibilities of float polishing utilizing the present improved magnetic compound fluid (MCF). The MCF developed by one authors, Shimada, in 2001, was improved by the addition of alpha-cellulose, thereby achieving a clearance as great as 8 mm as shown in another paper. The present paper describes the possibility of...
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