I have gathered materials that change color with temperature and light, and return to their original color when the temperature and light are restored.
1. Temperature-sensitive liquid material that changes color When mixed with a transparent liquid, it becomes cloudy depending on the temperature, allowing three-dimensional observation of temperature changes. The clouding temperature can be adjusted between approximately 30°C and 100°C. <Application examples> - Science teaching materials for convection observation - Visualization applications for heat transfer https://www.ipros.jp/product/detail/2000711146 2. Temperature-sensitive solid material that changes color The color tone changes reversibly according to the external environmental temperature. The color tone can be adjusted. <Application examples> - High-temperature warning paint for plant piping - Overheat warning for motors, etc. - High-temperature warning for cooking utensils, etc. https://www.ipros.jp/product/detail/2000722254 3. Transparent film that changes to a deep blue under light Once colored, it retains the color for a long time. It can be used for photosensitive materials such as blueprints. The fading time can be adjusted. <Application examples> - Film for smart windows (applied to windows to control indoor brightness) - Rewritable paper (prints and copies with light, returns to transparent after a few hours) https://www.ipros.jp/product/detail/2000710310
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basic information
We are introducing materials developed from research at Yamaguchi University that change color reversibly in response to temperature and light stimuli. While these are not available for sale as products, we can provide samples. Related patents: 1. Liquid material that changes color with temperature JP 2021-32996 2. Solid material that changes color with temperature JP 2021-31558 3. Film that changes to a deep blue color with light Patent No. 6065528
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Applications/Examples of results
<1. Application Examples> - Science teaching materials for convection observation - Visualization applications for heat transfer <2. Application Examples> - High-temperature warning paint for plant piping - Overheat monitors for motors and similar devices - High-temperature warnings for cooking appliances (such as IH heaters) <3. Application Examples> - Film for smart windows (applied to windows to control indoor brightness) - Rewritable paper (prints and copies with light, disappears after a few hours)
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Company information
Yamaguchi TLO Co., Ltd. is a TLO approved by the Ministry of Education, Culture, Sports, Science and Technology and the Ministry of Economy, Trade and Industry based on the Act on the Promotion of Technology Transfer from Universities, established in November 1999 with investments from 50 faculty members of Yamaguchi University (capital of 4 million yen) before incorporation. It is a liaison-type technology transfer organization that bridges people. We return the research results from the university to society in the form of technology transfer and other means. Additionally, we are actively recruiting member companies to prioritize the disclosure of invention information and contribute to the development of the local economy through these efforts.
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