Raman enhanced base for amplifying raman signal, and preparation method and application thereof
A Raman signal and substrate technology, which is applied in Raman scattering, measuring devices, instruments, etc., can solve the problem that metal nanoparticles and graphene cannot be tightly combined, the process of graphene composite substrate is complicated, and graphene is difficult to prepare mixed substrates and other problems, to achieve the effect of tight combination, lower temperature and anti-oxidation
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[0027] Example 1
[0028] 1. Use the ultrasonic cleaning method to clean the polished quartz substrate. The cleaning process is 5 to 10 minutes each with alcohol, acetone and deionized water.
[0029] 2. The silver film with a thickness of 30-40nm is vapor-deposited on the quartz substrate by thermal evaporation, the evaporation environment is a low-pressure environment, and the pressure is less than 10 -3 Pa.
[0030] 3. Put the silver-plated quartz plate into a tube furnace for annealing treatment. The annealing temperature is 500-600℃, the annealing time is 25-35 minutes, the annealing environment is low-pressure argon, and the argon flow rate is 50- 60sccm, the pressure is less than 10 -2 Pa, the pressure is controlled by the instrument pump. After the annealing is completed, open the furnace cover to quickly bring the quartz plate to room temperature, and take out the quartz plate after cooling.
[0031] 4. Prepare an ammonium tetrathiomolybdate solution with a concentration of 0...
Example Embodiment
[0038] Example 2
[0039] 1. Use the ultrasonic cleaning method to clean the polished quartz substrate. The cleaning process is 5 to 10 minutes each with alcohol, acetone and deionized water.
[0040] 2. The silver film with a thickness of 30-40nm is vapor-deposited on the quartz substrate by thermal evaporation, the evaporation environment is a low-pressure environment, and the pressure is less than 10 -3 Pa.
[0041] 3. Put the silver-plated quartz plate into a tube furnace for annealing treatment. The annealing temperature is 500-600℃, the annealing time is 25-35 minutes, the annealing environment is low-pressure argon, and the argon flow rate is 50- 60sccm, the pressure is less than 10 -2 Pa, the pressure is controlled by the instrument pump. After the annealing is completed, open the furnace cover to quickly bring the quartz plate to room temperature, and take out the quartz plate after cooling.
[0042] 4. Prepare an ammonium tetrathiomolybdate solution with a concentration of 0...
Example Embodiment
[0045] Example 3
[0046] 1. Use the ultrasonic cleaning method to clean the polished quartz substrate. The cleaning process is 5 to 10 minutes each with alcohol, acetone and deionized water.
[0047] 2. The silver film with a thickness of 30-40nm is vapor-deposited on the quartz substrate by thermal evaporation, the evaporation environment is a low-pressure environment, and the pressure is less than 10 -3 Pa.
[0048] 3. Put the silver-plated quartz plate into a tube furnace for annealing treatment. The annealing temperature is 500-600℃, the annealing time is 25-35 minutes, the annealing environment is low-pressure argon, and the argon flow rate is 50- 60sccm, the pressure is less than 10 -2 Pa, the pressure is controlled by the instrument pump. After the annealing is completed, open the furnace cover to quickly bring the quartz plate to room temperature, and take out the quartz plate after cooling.
[0049] 4. Prepare an ammonium tetrathiomolybdate solution with a concentration of 0...
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