Name: Suzhou cycas Microelectronics Co., Ltd.
Address: 1st floor, B06 plant, No.2, Fuxing Road, Zhangjiagang Economic Development Zone
How to evaluate the effect of plasma cleaning machine?
Plasma cleaning machine uses plasma to achieve the effect that conventional cleaning methods cannot achieve. Plasma is a state of matter, also known as the fourth state of matter, which does not belong to the common three state of solid-liquid gas. Applying enough energy to the gas to dissociate it becomes a plasma state. The "active" components of plasma include: ions, electrons, atoms, active groups, excited Nuclides (metastable), photons, etc. Plasma cleaning machine is to use the properties of these active components to treat the sample surface, so as to achieve the purpose of cleaning, coating and so on.
So how to evaluate the effect of plasma cleaning machine? Most of the common plasma cleaning effects are using contact angle measuring instrument, dyne pen and surface energy testing ink.
At present, the contact angle measuring instrument is the most common test method for the effect evaluation of plasma cleaning machine and the most recognized test method in the industry. The test data is accurate, the operation is simple, the repeatability and the stability are high. The principle is to titrate a certain amount of droplets on the surface of the solid sample by the method of optical appearance contour, and quantify the contact angle of the droplets on the solid surface, which means that the cleaning effect is better. In the early stage, a lot of practical evaluation of plasma cleaning will use the method of simple evaluation of syringe dripping, but this method can only be observed when the effect is obvious.
Dyne pen is a kind of testing method which is widely used and easy to operate. The principle is to judge the surface free energy of solid samples by the wetting and contraction of different surface free energy of different surface tension liquids. However, this method is affected by the dyne pen made by different manufacturers and human operation, so its repeatability and stability are poor.