Manufacturing

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MEMS infrared photodetector

ManufacturingNano technology

MEMS infrared photodetector

In Kan Laboratory at the University of Electro-Communications, we are conducting research on unique MEMS optical sensors and devices by fabricating micro- to nano-sized metal diffraction gratings and pillar structures on silicon. Normally, silicon alone does not have sensitivity to infrared light, but by utilizing the Schottky barrier formed at the interface between silicon and metal, it becomes possible to electrically detect infrared light with silicon. By absorbing externally incident light with diffraction gratings or pillar structures formed through MEMS processes, it is also possible to selectively detect specific wavelengths or polarizations of light. By utilizing these features, it is possible to construct infrared light detectors using silicon-based devices, as well as to develop spectroscopic sensors, gas sensors, and chemical sensors. Furthermore, by using silicon as the substrate material, it has the advantage of being able to utilize existing semiconductor manufacturing processes and leverage the legacy of semiconductors. This is a highly efficient method in terms of mass production and system integration. In this way, Kan Laboratory is utilizing unique MEMS principles to advance research on ultra-compact, cost-effective optical sensors with simplified manufacturing processes.

MicroWave Oscillators and Atmospheric Pressure Plasma Needle

Manufacturing

MicroWave Oscillators and Atmospheric Pressure Plasma Needle

Plasma Applications Co., Ltd., a research and development-based venture originating from Shizuoka University, developed microwave excited atmospheric pressure plasma needle generator that can be used for various surface processing operations.
The key features of this technology are as follows:
- Simple and compact hardware design, making it cost-effective.
- Operates under atmospheric pressure conditions.
- Capable of stable temperature control.
- Low power consumption and potential for power and wiring-free applications.
- Enables processing of fine details (minimum 2mm diameter).
- Environmentally friendly and safe for human use.

Precise bonding equipment for electronic devices utilizing heat sink laser welding

Manufacturing

Precise bonding equipment for electronic devices utilizing heat sink laser welding

Although electronic devices and medical apparatuses require precise bonding technology for infinitesimals like micro switch or encapsulated bonding for large acreage objects like flat panel display, there are issues of influence by heat and insufficient accuracy for the products in the conventional boding methods under practical application.
The newly developed precise bonding equipment for electronic devices can solve those issues and realize welding by the surface refrigeration inside melting method using high-speed and high-performance laser in order to meet each need and each size.
This technology is the result of Adaptable and Seamless Technology Transfer Program (A-STEP) implemented by Japan Science and Technology Agency (JST) applying no-surface-damage laser welding method developed by the Advanced Laser Resin Welding Technology/Promotion Consortium.

2.45 GHz microwave oscillator and an atmospheric pressure plasma needle

Manufacturing

2.45 GHz microwave oscillator and an atmospheric pressure plasma needle

The 2.45 GHz microwave oscillators produced by Plasma Applications Co., Ltd., (Research and development venture from Shizuoka University) have such properties as high-efficiency, small-scale and long-life so that they are used for a variety of applications such as long-lived plasma generation. The atmospheric pressure plasma needle developed by the laboratory has the following characteristics:
1) Simple configuration, compact and inexpensive
2) Operation at the atmospheric pressure
3) Stable temperature control
4) Low electric power consumption, achievement of AC power-less wire-less systems using the battery
5) Processing in fine areas (minimum 2 mm in diameter).
6) Environmentally friend and safety for the human body.

Development of Metal Myoelectric Hand Prothesis with Lightweight and Robust Optimal Design generated by Generative Design

Medical Engineering Collaboration / Life SciencesITManufacturing

Development of Metal Myoelectric Hand Prothesis with Lightweight and Robust Optimal Design generated by Generative Design

We have developed a lightweight and robust metal myoelectric prosthetic hand using an optimization design tool called Generative Design. As a result, we were able to achieve the lightest weight while maintaining the robustness required for myoelectric prosthetic hands. Furthermore, by introducing a torsion spring with moving parts only in the gripping direction at the joins of the four-finger bases, the necessary pinch force (force to grasp an object) is ensured while receiving an unexpected external force.

Robot using artificial muscles simulating peristaltic movement of earthworms and its application to pipe inspection, high viscous fluid pumping, and excavation

Medical Engineering Collaboration / Life SciencesManufacturing

Robot using artificial muscles simulating peristaltic movement of earthworms and its application to pipe inspection, high viscous fluid pumping, and excavation

Earthworms move through narrow spaces by peristaltic movements. In Nakamura group, we are developing a robot that simulates the peristaltic movement of an earthworm by using our original artificial muscles as its constituent parts which "contract and expand" by air pressure. This system does not require moving space for its direction change; it can be applied for in-pipe inspection, mixing and separation of solid-liquid mixtures, pumps for solid-liquid mixtures and high viscosity fluids for transportation of sludge, food, cement, etc., and excavation in the ground in combination with an earth auger.

The combination of measurement wavelengths can be freely selected. Multispectral camera

Medical Engineering Collaboration / Life SciencesITManufacturing

The combination of measurement wavelengths can be freely selected. Multispectral camera

It's a venture company in university. We have developed a multispectral camera to extract and analyze the reflection spectrum of any (6bands) (+ RGB : 3 bands) in a wide range of wavelengths from visible to near-infrared (350 nm to 1050 nm). We can see the material properties that we couldn't see from our own spectral functions. It is cheaper than a hyper-spectral camera or an overseas multi-spectral camera. It can be applied to various uses such as inspection and analysis. We offer flexible suggestions to customers, such as equipment sales, customization, etc.

Safer and low-cost breast cancer examination technology by utilizing microwave radar and tomography

ITManufacturing

Safer and low-cost breast cancer examination technology by utilizing microwave radar and tomography

X-ray mammography is used for breast cancer examination, but females’ acceptance rate of examination is only about 15% because the X-ray based examination causes radiation exposure and strong pain with high pressure to the breast.
In order to develop a more comfortable and frequent breast cancer examination technology, we focused on microwave mammography apparatus utilizing a physical basis for the high contrast of complex permittivity between cancer cells and normal cells. Finally, we developed a highly accurate cancer detection method by combining unique radar technology called as PRM (Range Points Migration) method and the tomography technology, also introducing machine learning system upon artificial intelligence. This new examination technology can detect cancer cells less than 1 cm on the early stage.