Fast Polymeric Thermal Expansion for Dual-Stage Actuation in Hard Disk Drives

被引：0

作者：

Lau, G. K. ^{[1
]}

Thubthimthong, B. ^{[1
]}

Yang, J. P. ^{[2
]}

Tan, C. P. ^{[2
]}

Chong, N. B. ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

[2] ASTAR, Data Storage Inst, Singapore, Singapore

来源：

2012 DIGEST ASIA-PACIFIC MAGNETIC RECORDING CONFERENCE (APMRC) | 2012年

关键词：

Terms Dual-stage actuation; thermal micro-actuator; composite design. hard disk drives;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Polymer, such as SU8, is more thermally expandable than silicon, and it has a potential to build a more powerful thermal actuator. Yet, it is limited to by slow response time to electro thermal activation. In this work, polymeric composite thermal unimorphs have been built by integrating silicon heat fins in the polymer at small spacing (10 m). With a small heat capacity in each polymeric spacer, fast polymeric thermal expansion is demonstrated at a time constant less than lms. This polymer composite micro-actuator was used to drive a femto slider for fast dual-stage micro actuation in hard disk drives.

引用

页数：2