中文摘要：

在纳米间隙条件下，以楔型滑块和双轨式磁头为例，推导出楔型及双轨式磁头范德华力的计算公式，考察了范德华力对计算机磁头／磁盘超薄气膜承载性能的影响．结果表明，范德华力对计算机磁头／磁盘的承载性能影响很大，范德华力可以降低磁头的承载能力，尤其在最小空气间隙小于6nm时；在相同尺寸的磁头中，双轨式磁头的范德华力小于楔型滑块的范德华力，而前者的承载力大于后者，双轨式磁头的范德华力对其承载性能影响较小．范德华力可以使飞行高度降低，为磁头设计和磁头／磁盘装配的重要依据．

英文摘要：

Current thickness of the gas film in air bearing of Magnetic head/disk is only 8 nm. At such a small spacing, it is expected reasonably that the surface force will come into action. Numerical analysis was conducted to explore the possibility of Van der Waals force on magnetic head/disk. The numerical results show that Van der Waals force reduces the loading force of wedge-type slide block and double-track magnetic head, especially when the minimum spacing is below 6nm. Having the same dimension, the influence of Van der Waals force on doubletrack magnetic head is smaller than wedge-type slide block＇ s. It is expected reasonably that the influence of Van der Waals is critical to magnetic head/disk, which is important for design and assembling of magnetic head.