Keyword: L - TU Research Profiles

"L" Theme - 4 Result(s)

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L

Lethal effects of blue light on insects

特徴・独自性

We revealed the strong lethal effect of short-wavelength visible light (blue light: 400–500 nm) on insects. That is, we found that blue light irradiation by using a common light-emitting diode (LED) can kill the eggs, larvae, pupae, and adults of various orders of insects. Our findings will provide clean and safe pest-control technique as well as important information on the hazards of exposure to visible light.

実用化イメージ

Researchers

Graduate School of Agricultural Science

Masatoshi Hori

newLeveraging Telepsychology to Improve Access to Mental Health Support

概要

The importance of mental health has been widely recognized. Nevertheless, in Japan, the treatment gap remains unresolved. On the user side, there are barriers such as stigma and time/financial costs associated with help-seeking. On the provider side, challenges include the difficulty of matching clients with appropriate psychological support. Telepsychology has the potential to solve these issues. My research focuses on online psychological support and examines its effectiveness and potential applications.

従来技術との比較

Previous studies have focused on examining the effectiveness of various forms of online psychological support. However, whether telepsychology improves people’s help-seeking have been underexamined. My research investigates both the effectiveness of telepsychology and explores appropriate service provision to enhance people’s help-seeking.

特徴・独自性

• My research goes beyond showing the “effectiveness” of online psychological support and focuses on improving accessibility, aiming for outcomes that are practical and useful in society.
• It examines both user factors (such as stigma and costs) and provider factors (such as matching difficulties).
• Based on empirical evidence, it explores better ways of delivering services so that psychological support becomes easier to access.

実用化イメージ

The goal of this research is to improve access to psychological support services, contributing to early intervention and the maintenance of mental health and well-being. There is potential for collaboration with companies providing mental health-related services, organizations promoting employee health management and corporate wellness, as well as ICT-based medical and welfare service developers.

Researchers

Graduate School of Education

Schlemper Lenna

Liquid crystal reflectarrays to overcome wireless communication problem caused by building shadows.

概要

This technology relates to the development of liquid crystal reflectarrays for eliminating communication obstacles (coverage holes) caused by building shadows and other obstacles in high-frequency wireless communications after 5G. The “two-directional electric field drive method”, which applies electric fields in the vertical and horizontal directions to the liquid crystal layer, makes it possible to control the orientation of the liquid crystal molecules in a fast and stable manner. This overcomes the response delay of thick liquid crystals, which has been a problem in the past, and enables control of the direction of radio wave reflection in the millimeter wave band.

従来技術との比較

Conventional reflective arrays include a high-speed control method using varactor diodes and a simple-structured method using liquid crystal, but each has its own problems. In particular, the response delay (several seconds to several tens of seconds) caused by the thick layer of the liquid crystal method was a problem. In this technology, stripe-shaped electrodes are added to the liquid crystal layer to apply electric fields from both vertical and horizontal directions, and the response time has been successfully reduced to 500 ms or less.

特徴・独自性

The most distinctive feature of this technology is the high-speed response control of liquid crystal molecules by means of bidirectional electric field drive. This makes it possible to drive even thick liquid crystal layers at low voltages (30 V or lower), and enables almost natural responsiveness for video display and communication control. We have also established a design guideline that maximizes dielectric constant change by optimizing the electrode structure, utilizing simulation technology for liquid crystal orientation.

実用化イメージ

This technology is applicable to radio wave control in the millimeter and terahertz bands, and is expected to be deployed in reflectarrays, phased array antennas, variable delay lines, and beam formers. We will continue to optimize the liquid crystal materials and electrode structures, and through evaluation of actual millimeter-wave reflection characteristics, we aim to implement this technology in telecommunication infrastructures.

Researchers

Graduate School of Engineering

Hideo Fujikake

Low temperature reforming of hydrocarbons using metal oxide nanoparticles synthesized by supercritical method

特徴・独自性

Our research group has succeeded in synthesizing various metal oxide nanoparticles with controlled size and exposure crystal planes by using organic modifiers under supercritical water conditions. The oxygen storage/release capacity of those materials in the low-temperature region is very high, and the reforming reaction of oxidative hydrocarbon proceeds at a significant rate. Besides, by combining the supercritical CO2 drying method, we have succeeded in forming a complex in which oxide nanoparticles are dispersed at a high concentration on the surface of the porous material, realizing both high oxygen storage/release capability and stability.

実用化イメージ

Low-temperature reforming reaction of biomass wastes, heavy oils, and methane. In the future, it is expected to be a technology that will lead to the construction of a low-carbon society, including CO2-free complete recycling of waste plastics.

Researchers

Advanced Institute for Materials Research

Tadafumi Ajiri

"L" Theme - 4 Result(s)

L

Lethal effects of blue light on insects

Researchers

newLeveraging Telepsychology to Improve Access to Mental Health Support

Researchers

Low temperature reforming of hydrocarbons using metal oxide nanoparticles synthesized by supercritical method

Researchers

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