High-sensitivity and high-resolution living body temperature measurement technology
A high-sensitivity, high-tech technology, applied in the fields of rare earth doped up-conversion luminescent materials and temperature detection, can solve problems such as affecting the up-conversion luminous efficiency
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example 1
[0016] Example 1: Preparation of used sodium fluorine gadolinium nanocrystals by the above-mentioned nanocrystal preparation method, i.e. 0.78 millimolar GdCl 3 ·6H 2 O, 0.2 mmol YbCl 3 ·6H 2 O and 0.02 mmol ErCl 3 ·6H 2 O was added to a 100 ml three-necked flask, 8 ml of oleic acid and 12 ml of octadecene were added, and stirred to make it evenly mixed. Stirring was continued, and the mixture in the three-neck flask was heated to 150 degrees Celsius under the protection of nitrogen flow, and kept for 30 minutes to dissolve all the rare earth salts to form a clear solution, and then cooled to room temperature. Weigh 3 mmol NH 4 F and 1 mmol NaOH were dissolved in 5 ml of methanol, and the resulting methanol solution was added dropwise into a three-necked flask, stirred for 20 minutes, heated to 80 degrees Celsius and kept for 30 minutes to remove methanol in the system. After the methanol is exhausted, the reaction system is heated to 150 degrees centigrade and kept for ...
example 2
[0018] Example 2: Weigh 0.78 mmol GdCl 3 ·6H 2 O, 0.2 mmol YbCl 3 ·6H 2 O and 0.02 mmol ErCl 3 ·6H 2 O was added to a 100 ml three-necked flask, 8 ml of oleic acid and 12 ml of octadecene were added, and stirred to make it evenly mixed. Stirring was continued, and the mixture in the three-neck flask was heated to 150 degrees Celsius under the protection of nitrogen flow, and kept for 30 minutes to dissolve all the rare earth salts to form a clear solution, and then cooled to room temperature. Weigh 3 mmol NH 4 F and 1 mmol NaOH were dissolved in 5 ml of methanol, and the resulting methanol solution was added dropwise into a three-necked flask, stirred for 20 minutes, heated to 80 degrees Celsius and kept for 30 minutes to remove methanol in the system. After the methanol is exhausted, the reaction system is heated to 150 degrees centigrade and kept for ten minutes to remove the moisture in the system, and then under the protection of nitrogen flow, the temperature of the...
example 3
[0020] Example 3: The same method prepares NaGdF 4 :Nd 3+ ,Yb 3+ ,Er 3+ Nanocrystals, nanocrystals prepared by irradiating near-infrared light with a wavelength of 808nm and 980nm, and the power of the two laser beams were respectively fixed at 12W / cm 2 and 8W / cm 2 ; Use a spectrometer to measure the emission intensity of its main peaks at 523nm, 542nm green emission band and 654nm red emission band; calculate the intensity ratio value to calibrate the temperature of the environment where the material is located.
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