Facteurs affectant les microbulles dans les liquides


Factors Affecting Microbubbles in Liquids

In the semiconductor manufacturing industry, microbubbles (bubbles smaller than 100 µm in diameter) can be contaminants that reduce manufacturing yield. For example, if microbubbles in photoresist are dispensed onto a wafer, they can cause a defect in the microcircuit being produced thereby causing premature failure. This paper discusses some of the factors that influence the formation of microbubbles in liquids and how microbubbles can be differentiated from hard particles using optical particle counters. Experimental results in water and common photoresist solvent, propylene glycol methyl ether acetate, are presented. The results are compared to theoretical predictions.

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