e乐彩线路检测

Introduction: The Underestimated Source of Error
Contact angle measurement is one of the standard methods for assessing the wettability of material surfaces, widely used in fields such as materials science, chemical engineering, surface science, and biomedical applications. It helps researchers understand how liquids interact with solid surfaces, providing crucial references for material design and applications. However, despite the widespread application and significant success of contact angle measurement technology, many experimental results suffer from deviations and errors, particularly in the areas of liquid purity and solid cleanliness. According to numerous experiments, over 90% of measurement errors stem from the neglect of water quality and solid cleanliness, a phenomenon that is prevalent in both academic and industrial fields. Specifically, research has shown that in wettability data, about 78% of the errors come from not effectively controlling cleanliness factors (Surface Science Reports, 2021).

This suggests that many experimental data could be influenced by "hidden contamination" or insufficient cleanliness detection, leading to significant deviations or misleading results. For example, one study showed that without proper water quality control, the measured contact angle could deviate by more than 20%. As surface science research deepens, this issue has gradually attracted attention in the academic world. This article aims to critically analyze the harm caused by neglecting cleanliness in contact angle measurement, emphasizing the necessity of strict cleanliness control in scientific experiments, and suggesting improvement methods.

I. Theoretical Framework: How Cleanliness Affects Measurement Accuracy

1.1 The Butterfly Effect of Surface Tension
Accurate measurement of contact angles relies on Young’s equation, which describes the wettability behavior of liquids on solid surfaces, as shown below: