The Experts below are selected from a list of 3348 Experts worldwide ranked by ideXlab platform

T H Chuang - One of the best experts on this subject based on the ideXlab platform.

  • active soldering of indium tin oxide ito with cu in air using an sn3 5ag4ti ce ga filler
    Journal of Materials Engineering and Performance, 2003
    Co-Authors: S Y Chang, L C Tsao, M J Chiang, C N Tung, G H Pan, T H Chuang
    Abstract:

    Indium tin oxide (ITO) ceramics are bonded with ITO and Cu at 250 °C in air using an active solder Sn3.5Ag4Ti(Ce, Ga). The mechanism for such low temperature soldering of ITO ceramics in air has been investigated. Electron Probe Microanalyzer (EPMA) analyses reveal that the element oxygen distributes uniformly within the solder matrix after soldering, while Ti segregates effectively at the ITO/solder and Cu/solder interfaces at such a low temperature, giving satisfactory joining results of Cu/Cu, ITO/ITO, and ITO/Cu in air.

Takao Hirajima - One of the best experts on this subject based on the ideXlab platform.

  • Modal analysis using scanning Electron Probe Microanalyzer
    Japanese Magazine of Mineralogical and Petrological Sciences, 2006
    Co-Authors: Keisaku Matsumoto, Takao Hirajima
    Abstract:

    We propose a new modal analysis method using a scanning Electron Probe Microanalyzer with an energy dispersive X-ray analytical system. The procedure is based on the multipoint analysis software of EDAX® Inc. The analysis points are selected as equal interval grids in the secondary Electron image (SEI), which covers 3.2 × 2.45 mm2 area as the maximum. The mineral identification of each X-ray spectrum can be done by the combination of the assemblage and content of mineral forming elements. This method can identify most of rock-forming minerals easily, what is an advantage comparing with the conventional modal analysis method under the optical microscope. To obtain the reliable modal data, we can adjust grid intervals depending on the grain size of rock forming minerals and the numbers of the beam acquisition areas depending on the degree of heterogeneity of samples. This technique is available for the rock sample with average grain size between 0.2 and 2.0 mm by the restriction of the minimum enlargement size of the SEI. The new method gives the concordant modal data to those obtained by the conventional point-counting method by several beam acquisition areas for homogeneous samples and by a few tens beam acquisition areas for heterogeneous samples.

S Y Chang - One of the best experts on this subject based on the ideXlab platform.

  • active soldering of indium tin oxide ito with cu in air using an sn3 5ag4ti ce ga filler
    Journal of Materials Engineering and Performance, 2003
    Co-Authors: S Y Chang, L C Tsao, M J Chiang, C N Tung, G H Pan, T H Chuang
    Abstract:

    Indium tin oxide (ITO) ceramics are bonded with ITO and Cu at 250 °C in air using an active solder Sn3.5Ag4Ti(Ce, Ga). The mechanism for such low temperature soldering of ITO ceramics in air has been investigated. Electron Probe Microanalyzer (EPMA) analyses reveal that the element oxygen distributes uniformly within the solder matrix after soldering, while Ti segregates effectively at the ITO/solder and Cu/solder interfaces at such a low temperature, giving satisfactory joining results of Cu/Cu, ITO/ITO, and ITO/Cu in air.

Haruo Nakagaki - One of the best experts on this subject based on the ideXlab platform.

  • Quantitative evaluation of the oral biofilm-removing capacity of a dental water jet using an Electron-Probe Microanalyzer.
    Archives of Oral Biology, 2012
    Co-Authors: Kazuo Kato, Kiyomi Tamura, Haruo Nakagaki
    Abstract:

    Abstract Objective This study was conducted to evaluate the oral biofilm-removing capacity of a dental water jet (DWJ) by measuring biofilm thickness using an Electron-Probe Microanalyzer (EPMA). Methods Thirty consenting subjects wore in situ plaque-generating devices, which consisted of a pair of 4 mm 2 enamel slabs attached to the upper molars for 2 days. Each device removed from the mouth was clamped, and one of the slab surfaces was treated with the DWJ, irrigating it for 5 s. The devices were randomly assigned to three different pressure settings of 707, 350 or 102 kPa. Another slab with no treatment served as a control. Each slab was freeze-dried, sputter-coated with platinum, and examined using secondary-Electron imaging. The slabs were then embedded in methacrylate and cross-sectioned in the centre. Their surfaces were polished, coated with carbon, and examined using backscattered Electron compositional (COMPO) imaging. The area between the enamel and the outer biofilm surface, indicated by a thin platinum layer, was measured by COMPO imaging to calculate the average thickness of the biofilm on the specimen. Results The removal capacity of biofilm by irrigation was estimated using a reduced rate of biofilm thickness, which was calculated from the differences between a pair of treated and control slabs. The reduced rates were 85.5% at 707 kPa, 85.1% at 350 kPa and 63.4% at 102 kPa, indicating that biofilm thickness was significantly reduced at every pressure setting. Conclusions The results suggest that irrigation using a DWJ would be an effective means of plaque control.

  • A Method for Quantitatively Evaluating Plaque Biofilm-Removing Capacity of a Dental Water Jet Using EPMA
    Interface Oral Health Science 2011, 2012
    Co-Authors: Kazuo Kato, Kiyomi Tamura, Haruo Nakagaki, Shoichi Sakakibara, Susumu Matsumoto, Kana Fujita, Takuichi Sato
    Abstract:

    Inconsistent results have been reported on the effects of dental water jet (DWJ) on plaque removal. Plaque biofilm removing capacity of the DWJ was evaluated by a new method to measure biofilm thickness using an Electron-Probe Microanalyzer (EPMA). Area measurements of biofilm cross-sections imaged with backscattered Electrons suggested that irrigation using a DWJ would be an effective means of plaque control.

Kazuo Kato - One of the best experts on this subject based on the ideXlab platform.

  • Quantitative evaluation of the oral biofilm-removing capacity of a dental water jet using an Electron-Probe Microanalyzer.
    Archives of Oral Biology, 2012
    Co-Authors: Kazuo Kato, Kiyomi Tamura, Haruo Nakagaki
    Abstract:

    Abstract Objective This study was conducted to evaluate the oral biofilm-removing capacity of a dental water jet (DWJ) by measuring biofilm thickness using an Electron-Probe Microanalyzer (EPMA). Methods Thirty consenting subjects wore in situ plaque-generating devices, which consisted of a pair of 4 mm 2 enamel slabs attached to the upper molars for 2 days. Each device removed from the mouth was clamped, and one of the slab surfaces was treated with the DWJ, irrigating it for 5 s. The devices were randomly assigned to three different pressure settings of 707, 350 or 102 kPa. Another slab with no treatment served as a control. Each slab was freeze-dried, sputter-coated with platinum, and examined using secondary-Electron imaging. The slabs were then embedded in methacrylate and cross-sectioned in the centre. Their surfaces were polished, coated with carbon, and examined using backscattered Electron compositional (COMPO) imaging. The area between the enamel and the outer biofilm surface, indicated by a thin platinum layer, was measured by COMPO imaging to calculate the average thickness of the biofilm on the specimen. Results The removal capacity of biofilm by irrigation was estimated using a reduced rate of biofilm thickness, which was calculated from the differences between a pair of treated and control slabs. The reduced rates were 85.5% at 707 kPa, 85.1% at 350 kPa and 63.4% at 102 kPa, indicating that biofilm thickness was significantly reduced at every pressure setting. Conclusions The results suggest that irrigation using a DWJ would be an effective means of plaque control.

  • A Method for Quantitatively Evaluating Plaque Biofilm-Removing Capacity of a Dental Water Jet Using EPMA
    Interface Oral Health Science 2011, 2012
    Co-Authors: Kazuo Kato, Kiyomi Tamura, Haruo Nakagaki, Shoichi Sakakibara, Susumu Matsumoto, Kana Fujita, Takuichi Sato
    Abstract:

    Inconsistent results have been reported on the effects of dental water jet (DWJ) on plaque removal. Plaque biofilm removing capacity of the DWJ was evaluated by a new method to measure biofilm thickness using an Electron-Probe Microanalyzer (EPMA). Area measurements of biofilm cross-sections imaged with backscattered Electrons suggested that irrigation using a DWJ would be an effective means of plaque control.