Japan's new thermometer, according to the temperature change color

According to Japan's 'sankei shimbun' reported that the Japanese Hokkaido university professor long GuChuanJing sichuan ( Materials chemistry) Has developed a new type of thermometer, the thermometer can change color according to the surrounding temperature. Compared with the previous luminescent material, the material's response to temperature more precise and more resistant to high temperature. In the future, this new invention could be used in the development of the spacecraft. Hasegawa, a professor at the team in the study, led by notice & other Terbium & throughout; And & other Europium & throughout; These two kinds of rare earths, after by ultraviolet irradiation in green and red light, respectively. Team combines with organic compounds on the two kinds of rare earth, developed the polymer luminescent material. Japan developed a new type of discoloration thermometer, 23 degrees below zero, On the left) Can present a green, 127 degrees high temperature can present a red ( On the right) 。 The picture shows the new color the color change of the thermometer in every 50 degrees. The luminescent material to minus 100 degrees to 250 degrees Celsius environment work. Below freezing temperature environment, can present green, appear as lemon yellow to yellow above zero environment, nearly 60 degrees will become

orange, and more than 100 degrees can emit bright red. By using spectrophotometric analysis the proportion of red and green two color and brightness, the light-emitting materials can be accurate to each react to temperature for a time. Compared with new luminescence materials, the luminescent material is monochrome, through color concentration, reaction temperature, and use only 0 to 80 degrees Celsius temperature. Material in light will weaken, after high temperature at 150 degrees c will decompose in the environment, leading to not be able to use. New materials are accurate glow at the same time, can withstand the environment of high temperature of 308 degrees c. Have predicted that this new type of light-emitting materials can be used to develop a spacecraft, supersonic aircraft and cars, coating on the surface of equipment survey equipment for high temperature changes in the environment. Hasegawa, says prof hope that through study the molecular structure of the material, will be within 2 years to adapt to the temperature to 500 degrees Celsius.