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Article
Evaluation of electromigration resistance of lead-free solders using unpassivated stripe-shaped samples
To improve the reliability of electronic devices, electromigration (EM) in lead-free solders is actively being studied. In particular, EM testing methods that use 1-D stripe samples have significant merit. How...
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Article
Dynamic Thermal Deformation Measurement of Large-Scale, High-Temperature Pi** in Thermal Power Plants Utilizing the Sampling Moiré Method and Grating Magnets
Fast and accurate deformation measuring techniques show promising potential for monitoring high-temperature pi** and other machinery in the energy sector, such as in thermal, steam, or nuclear power plants. ...
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Chapter and Conference Paper
Dynamic Thermal Deformation Measurement Technique for Large-Scale High Temperature Pi**
Fast and accurate deformation measuring techniques have promising potential for monitoring of high-temperature pi** and other machinery in the energy sector, such as thermal, stream, or nuclear power plant. ...
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Article
The effect of adding Ni and Ge microelements on the electromigration resistance of low-Ag based SnAgCu solder
Low-Ag-based Pb-free solder and its evaluation for electromigration (EM) reliability are research areas of active development. This paper studies the effect of adding Ni and Ge microelements on the EM behavior...
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Article
Accuracy of the Sampling Moiré Method and its Application to Deflection Measurements of Large-Scale Structures
Measuring accurate displacement distributions for large-scale structures is an important issue and a very challenging task. Recently, a simple and accurate phase measurement technique called sampling moiré met...
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Article
A technique utilizing chemical reagents for direct measurement of temperature at a local area and its engineering applications
Temperature is one of the physical quantities through which quantitative evaluation of the safety and reliability of industrial products can be achieved, and this has been used widely in practice. Under any en...
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Article
The Prognostic Impact of Isolated Tumor Cells in Lymph Nodes of T2N0 Gastric Cancer: Comparison of American and Japanese Gastric Cancer Patients
The clinical significance of immunohistochemically detected isolated tumor cells (ITC) in lymph nodes of gastric cancer patients is controversial. This study examined the prognostic impact of ITC on patients w...
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Article
A simple method for testing the electromigration resistance of solders
Recently, the size of solder bump interconnects have been significantly reduced with the advent of high-density packaging, and thus the evaluation of electromigration in solder bumps has become necessary. The ...
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Chapter and Conference Paper
Fabrication of Cu Nanowire at the Intended Position by Utilizing Stress Migration
A technique based on a phenomenon caused by electromigration has been proposed to fabricate metallic nanowires [1,2]. On the other hand, a foundation of fabricating metallic nanowires by utilizing effective colle...
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Article
Direct measurement of local surface temperature of eutectic solder for determining electromigration pattern
Electromigration pattern of solders depends on the temperature of the material. In almost all electromigration studies of solder, the temperature of the heater used for supplying heat to the solder, or that of...
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Article
Formation of Metallic Nanowires by Utilizing Electromigration
A technique for forming metallic nanowires by utilizing electromigration, which is the phenomenon of atomic diffusion due to high current densities, is presented. These diffused atoms can be used for creating ...
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Article
Relationship Between Closure Stress of Small Fatigue Crack and Ultrasonic Response
This paper describes a new methodology for analyzing the closure stress of small fatigue cracks using ultrasonics. Surface connected back-wall cracks in steel specimens are considered. The crack-corner echo of...
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Article
Ultrasonic Measurement of the Crack Depth and the Crack Opening Stress Intensity Factor Under a No Load Condition
This paper describes a new methodology for evaluating the crack depth and the crack opening stress intensity factor of small closed cracks using an ultrasonic technique. Surface connected back-wall cracks of d...
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Article
Comparative analyses of serum vitellogenin levels in male and female Reeves' pond turtles (Chinemys reevesii) by an immunological assay
A quantitative immunological method was developed for measuring serum vitellogenin levels of Reeves' pond turtles (Chinemys reevesii) to investigate the effects of endocrine disruptors on the freshwater ecosystem...
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Article
Recrystallization-etch observation of plastic deformation caused by cavitation shotless peening
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Chapter
Development of a Dry-contact Ultrasonic Technique and Its Application to NDE of IC Packages
A dry-contact technique for transmitting higher frequency components of ultrasonic wave is proposed to accomplish an inspection which requires higher resolution without wetting the tested parts in water. In th...
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Article
Peening by the use of cavitation impacts for the improvement of fatigue strength
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Article
Loading effect on ACPD of a crack in ferromagnetic material
The loading effect on alternating current potential drop (ACPD) for a ferromagnetic material containing a two-dimensional surface crack was investigated under opening mode loading without shear (mode I). The c...
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Chapter and Conference Paper
Simulation of the Growth of Diamond Nuclei on Silicon Substrate
Thin films have been widely used for the fields of electronic packages or new materials. Particularly the diamond film has drawn attention for coating of cutting bytes used for the super hard aluminum or the e...
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Chapter and Conference Paper
Nonlinear wave propagation and shock wave formation in quasi-brittle materials
Fracture of quasi-brittle materials such as concrete, rocks by impact, ceramics and calculi is known to occur due to the formation and development of microcracks. Microcracks reduce the macroscopic value of Yo...
