A paper in Proceedings of the National Academy of Sciences shows that the ridges on finger pads promote grip by acting as a microfluidic array that maintains optimal moisture levels and by deforming when wet to block sweat pores.

中文翻译：

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掌握指纹

《美国国家科学院院刊》上的一篇论文表明，指垫上的脊通过充当微流控阵列（可保持最佳水分含量）并在潮湿时变形以阻塞汗水孔来促进抓地力。