Tohoku University Technology: Wavefront control element and diffraction grating: T15-001
Manufacture small structure in short time by controlling the metallic glass material shape
In X-ray and neutron interferometry, the wavefront control elements must be precisely shaped. Grating with high-precision shape is required especially for interferometer where metallic glass grating is used as wavefront control elements. To obtain a metallic glass grating, it is preferable to bring the grating as close as possible to the crystallization initiation temperature with fast heat-up. However, more the temperature is high, more the lifetime time for the supercooled liquid is short. Therefore, the metallic glass material has to be molded while the viscosity is still high. In addition, the conventional grating manufacturing has difficulty to obtain small structures and the process needs long time. This invention is able to form a metallic glass material with low viscosity, and to provide a manufacturing method, wavefront-controlled elements and diffraction grating with structure smaller than few 10μm having precise shape control in a short time. This invention has a process of heating a metallic glass material in a supercooled state to a temperature above the crystallization begins, and mixing until the crystallization is completed.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
![Application Examples of Gratings (Diffraction Gratings) [Technical Document]](https://image.mono.ipros.com/public/product/image/300/2000361066/IPROS99336639816881409094.png?w=280&h=280)
