作为一种解决方案，我们在以上清洗液中引入表面活性剂Triton X-1

As a solution, we introduce a surfactant Triton X-100 in the above cleaning solution to reduce the surface roughness features. In order to understand the specific mechanisms of action of the surfactant in the cleaning process, first of Triton X-100 was determined wettability. Deionized water and Triton X-100 solution were dropwise a fresh copper surface of the specimen is contaminated BTA found that the contact angle of deionized water on the surface of the copper is 68.75 °, hydrophobic. And Triton X-100 to reduce the contact angle of copper surface to 31.5 °, and gradually decreases with the increase of its concentration, rendered hydrophilic, described TritonX-100 has good wetting properties on the surface of the Cu-BTA, that is capable of improving the contact area between the cleaning liquid and the hydrophobic copper surfaces [34] (1194). In addition, the surface tension was measured Triton X-100 solution using a hanging drop method. Allowing micro droplet injector mounted vertically from the tip of slow dripping, the measuring diagram shown in Figure 3. The surface tension of the solution (FS) is given by the following equation [2].

As a solution, we introduce the surfactant Triton X-100 into the above cleaning solution to reduce the surface roughness characteristics. In order to understand the mechanism of surfactant's action in the cleaning process, the wetting of Triton X-100 was first determined. The deionized water and Triton X-100 solution were dripped on the surface of the fresh copper specimen contaminated by BTA, and the contact angle of the deionized water on the copper surface was found to be 68.75 degrees, which was hydrophobic. The contact angle of the Triton X-100 on the copper surface is reduced to 31.5 degrees, and decreases gradually with the increase of its concentration, which is hydrophilic, indicating that Triton X-100 has good wetting properties on the Cu-BTA surface, i.e. it can improve the contact area between the cleaning fluid and the hydrophobic copper surface. (1194)。 In addition, the surface tension of the Triton X-100 solution was determined by the suspension method. Allows droplets to drop slowly from the tip of the vertically mounted microsampler, the measurement schematic is shown in Figure 3. The surface tension (FS) of the solution is given by the following equation.

As a solution, we introduce the surfactant Triton X-100 into the above cleaning solution to reduce the surface roughness characteristics. In order to understand the mechanism of surfactant in cleaning process, the wettability of Triton X-100 was measured. The contact angle of deionized water and Triton X-100 solution on the surface of fresh copper sample polluted by BTA was found to be 68.75 ° and hydrophobic. However, the contact angle of Triton X-100 on the copper surface decreased to 31.5 ° and decreased gradually with the increase of its concentration, indicating that Triton X-100 has good wettability on the Cu BTA surface, that is, it can improve the contact area between the cleaning solution and the hydrophobic copper surface [34] (1194). In addition, the surface tension of Triton X-100 solution was measured by the drop suspension method. The droplet is allowed to drip slowly from the tip of the vertical microinjector, and the measurement diagram is shown in Figure 3. The surface tension (FS) of the solution is given by the following equation [2].<br>