Fast polymeric thermal expansion for dual-stage actuation in hard disk drives

Gih Keong Lau*, B. Thubthimthong, J. P. Yang, C. P. Tan, N. B. Chong

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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 1ms. This polymer composite micro-actuator was used to drive a femto slider for fast dual-stage micro-actuation in hard disk drives.

Original languageEnglish
Title of host publication2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference
Subtitle of host publicationA Strong Tradition. An Exciting New Look!
StatePublished - 1 Dec 2012
Event2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012 - Singapore, Singapore
Duration: 31 Oct 20122 Nov 2012

Publication series

Name2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!

Conference

Conference2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012
CountrySingapore
CitySingapore
Period31/10/122/11/12

Keywords

  • Dual-stage actuation
  • composite design
  • hard disk drives
  • thermal micro-actuator

Fingerprint Dive into the research topics of 'Fast polymeric thermal expansion for dual-stage actuation in hard disk drives'. Together they form a unique fingerprint.

Cite this