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在热-tribological系统中激光-滑剂相互作用的in-situ亚-angstrom特征

Qilong Cheng^1,2, Sukumar Rajauria³, Erhard Schreck⁴

¹Computer Mechanics Laboratory, University of California at Berkeley, Berkeley, CA, USA. qlcheng@berkeley.edu.

Communications engineering

|October 5, 2024

概括

这项研究引入了一种新的热方法,用于监测热辅助磁记录硬盘驱动器中的滑剂行为. 它可以实时精确测量滑剂变化,这对于数据存储可靠性至关重要.

科学领域:

材料科学材料科学材料科学
部落学 (tribology) 是一个学科.
纳米技术纳米技术

背景情况:

激光滑剂相互作用是热辅助磁记录 (HAMR) 的关键可靠性问题,这是增加数据存储密度的关键技术.
目前的方法缺乏在激光照射下局部和实时诊断滑剂反应和恢复的能力,这阻碍了系统可靠性评估.
了解滑剂的行为对于下一代硬盘驱动器的寿命至关重要.

研究的目的:

提出和演示一种新的热方案,用于在热-tribological系统中的激光-滑剂相互作用的现场表征.
实时量化测量激光诱导的滑剂耗尽和回流动力学.
建立一种基于滑剂的热屏障效应来确定滑剂厚度的方法.

主要方法:

开发一种热方案,以在现场描述机械激光滑剂相互作用.
利用纳米厚滑剂在近场热传输上的热屏障效应来确定滑剂的厚度.
在现场进行滑油耗尽和回流动力学的定量测量.

主要成果:

拟议的方案实现了亚斯特罗姆分辨率 (~0.2 Å),使得高度敏感的测量.
在几秒钟内表现出快速响应时间,允许实时监控.
首次成功地进行了激光诱导的滑剂耗尽和随后的回流动力学的定量现场测量.

结论:

开发的热方案为现场实时滑剂诊断在实际硬盘驱动器产品中提供了一种可行的方法.
这种技术显著提高了对激光滑剂相互作用的理解和监测,这对于HAMR可靠性至关重要.
精确测量滑剂厚度和动态的能力为改进硬盘驱动器设计和性能铺平了道路.

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