A model has been established to describe the relationship between laser texture bump height and the offset from the focal plane. Experiments have been carried out to quantify model parameters. A smaller bump diameter design provides improved stiction performance using an optimized bump spacing arrangement. However, smaller bump diameter corresponds to smaller depth of focus. Since the bump height is highest when the disk surface is at the focal plane and since substrate surfaces normally have a runout of about 15 to 40 /spl mu/m, the minimum bump height in a batch of disks will decrease with lower bump diameter or larger defocus offset distance. Using the bump height defocus model combined with our stiction model, we found that a bump diameter less than a critical value will adversely affect the stiction performance.
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机译：已经建立了一个模型来描述激光纹理凸块高度与焦平面偏移之间的关系。已经进行了实验以量化模型参数。较小的凸块直径设计可通过优化的凸块间距布置来改善静摩擦性能。然而，较小的凸块直径对应于较小的聚焦深度。由于当圆盘表面位于焦平面时凸块高度最高，并且由于基板表面通常具有大约15至40 / spl mu / m的跳动，因此一批圆盘中的最小凸块高度将随着较低的凸块直径而减小。更大的散焦偏移距离。使用凸点高度散焦模型与我们的静摩擦模型相结合，我们发现凸耳直径小于临界值将对静摩擦性能产生不利影响。
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