Surface plasmon resonance experimental apparatus

★ 1. Main base, diameter: 280mm, material: precision cast iron, adjust the bottom corner handwheel with a level to make the whole machine horizontal. The worktable rotates 360 degrees in an axial manner and can be adjusted horizontally by adjusting the hand nails. The worktable can be raised and lowered within a range of 0-15 millimeters. The relative rotation between the plating plate and the vernier plate can be measured left and right by marking with the vernier and plating plate, with a reading accuracy of 1 '.

★ 2. The two arms rotate relative to each other, with each arm measuring 500mm and 600mm in length. The two moving arms are extended 1100mm, with either arm fixed and the other arm able to rotate 340 degrees for left and right measurements; The measurement accuracy of light intensity values is accurate, and the receiving position can be arbitrarily selected, making it convenient and flexible to study light intensity at any angle

3. Laser engraving precision turntable with a diameter of 180mm and an accuracy of 1 '

4. Optical center height: 130mm above the guide arm surface, base surface: 300mm;

5. Semiconductor laser: wavelength 650nm, power about 5mw;

6. Equipped with precision aluminum lifting device, the lifting is smooth.

7. Laser: Fixed on one arm of the instrument as an incident light source, used to excite plasmons on the surface of metal thin films, with an output wavelength of 650 nm

8. Optical coupling device: placed on the stage, made of customized hemispherical glass and gold plating

Made by optical bonding of filmProvide an interface for surface plasmon resonance, with a gold film thickness of approximately 50 nm. Hemispherical glass: K9, diameter 30, polished end and circular surfaces, support material: 6063, surface treatment: UV resistant oxidized sand black.

9. Flow pool: Customized quartz glass liquid pool for fixing coupling devices

And provide the tested liquid and metal film The contact environmentThe volume is 25 microliters

10. Peristaltic pump: Provides a stable flow rate of the test liquid, with a set speed of 30 r/min (adjustable)