JP – Page 3 – TechConnect Briefs

Structural Determination of Silica-Based Fire-Proof Heat Insulation

Oya N., Kawajiri Y., Kitajima H., Matsumoto K., Sugiura K., Imae K., Imae Y., Imae K., Imae Y., Osaka Prefectural College of Technology, JP

There are urgent needs for fire-proof heat insulations that are particularly used for protection of electric cables in critical power plants. Those insulations must provide sufficient coverages to enormously long cables and even have reduced [...]

Synthesis and properties of a series of bio-based surfactants with different hydrophobic chain length

Sato S., Habe H., National Institute of Advanced Industrial Science and Technology (AIST), JP

Glyceric acid (2,3-dihydroxypropanoic acid, GA) is a natural organic compound found in specific plants as a minor constituent, but can be mass-produced biotechnologically from glycerol, a by-product of biodiesel fuel production. We synthesized a series [...]

The Dispersion of Zirconia nanoparticles : ZIRCOSTAR

Takahashi K., Yao T., Kimura J., Hashimoto H., NIPPON SHOKUBAI CO., LTD., JP

1. Introduction Recently, the LCD and OLED display market demand concerning high refractive index materials increases rapidly. The required refractive index exceeds the upper limit of organic materials that can attain, therefore the research area [...]

Compact Modeling of Long-Term MOSFET Degradation for Predicting Circuits Degradation

Miyamoto H., Ma C., Mattausch H.J., Miura-Mattausch M., Tanoue H., Tanimoto Y., Kikuchihara H., Mattausch H.J., Miura-Mattausch M., Miura-Mattausch M., Hiroshima University, JP

[Introduction] Prediction methods of long-term degradation of both p- and n-type metal oxide semiconductor field effect transistors (MOSFETs) in CMOS circuits is proposed. During CMOS circuit degradation, not all the MOSFETs but only several MOSFETs [...]

Design of new single-electron information-processing circuit mimicking behavior of swarm of honeybees

Tanabe T., Oya T., Graduate School of Engineering, Yokohama National University, JP

We propose a new single-electron (SE) circuit that shows a unique information-processing by mimicking a foraging behavior of a swarm of honeybees. Recently, a “nature-inspired” or “biomimetic” technique based on natural world phenomena or biological [...]

Simulation of Lags and Current Collapse in Field-Plate AlGaN/GaN HEMTs with Different Types of Buffer Layers

Tsurumaki R., Noda N., Horio K., Shibaura Institute of Technology, JP

In AlGaN/GaN HEMTs, slow current transients are often observed even if the gate voltage VG or the drain voltage VD is changed abruptly. This is called gate lag or drain lag, and is problematic for [...]

Simulation of Current Slump Removal in Field-Plate GaAs MESFETs with a Thin Passivation Layer

Nomoto A., Sato Y., Horio K., Shibaura Institute of Technology, JP

In compound semiconductor FETs, slow current transients are often observed even if the drain voltage VD or the gate voltage VG is changed abruptly [1]. This is called drain lag or gate lag, and undesirable [...]

Simulation of Buffer Current Effects on Breakdown Voltage in AlGaN/GaN HEMTs Having Passivation Layers with Different Permittivity

Satoh Y., Hanawa H., Horio K., Shibaura Institute of Technology, JP

It is well known that the introduction of filed plate enhances the breakdown voltage in AlGaN/GaN HEMTs. This is because the electric field at the drain edge of the gate is reduced. However, the field [...]

Fabrication of Capacitive Micromachined Ultrasonic Transducer Arrays Using Glass Reflow Process and Anodic Bonding

Toan N.V., Hahng S., Song Y., Ono T., Tohoku University, JP

This paper presents a process for the fabrication of vacuum-sealed capacitive micromachined ultrasonic transducer (CMUT) arrays using glass reflow and anodic bonding techniques. The silicon through-wafer interconnects have been investigated by glass reflow process. Then, [...]

New Powder Synthesis Technology: Cubic Nano Alumina

Fukuhara S., Tahara M., Miwa N., Ashitaka K., Tamai K., Morinaga H., Ogitani S., Fujimi Incorporated, JP

Alumina is chemically stable and excellent in hardness, heat resistance, and mechanical properties. That is the reason alumina is widely used as a structural material, an abrasive grain and a cutting tool. In general, alumina [...]