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尽管夏季已经来临,但仍有些滑雪发烧友期待着下一个滑雪季,并寻找滑雪速度更快的方式。发表于2016年4月ACS Applied Materials&Interfaces上的一项研究提供了一个简便的方法。简而言之,雪橇底面一般由一种叫做超高相对分子质量聚乙烯(UHMWPE)的材料制成,制造商通常会打磨底面而使其变得粗糙。研究人员首先测量能使UHMWPE呈现粗糙质地的微观凹槽的形状和尺寸等变量,然后分析这些变量对不同温度的雪地上雪橇速度的影响。测试结果显示,在
Although summer has arrived, there are still some ski enthusiasts looking forward to the next ski season and looking for ways to ski faster. A study published in ACS Applied Materials & Interfaces in April 2016 provides an easy way to do this. In short, the bottom of a sleigh is typically made from a material called Ultra-High Molecular Weight Polyethylene (UHMWPE), which manufacturers often polish the bottom to make it rough. The researchers first measured the shape and size variability of the microgrooves that made the UHMWPE rough and then analyzed the effect of these variables on the sled speed at different temperatures. Test results show that in