dc.contributor.authorYang, J. P.
dc.contributor.authorLau, G. K.
dc.contributor.authorTan, C. P.
dc.contributor.authorChong, N. B.
dc.contributor.authorThubthimthong, B.
dc.contributor.authorGonzaga, L.
dc.contributor.authorHe, Z. M.
dc.identifier.citationYang, J. P., Lau, G. K., Tan, C. P., Chong, N. B., Thubthimthong, L., Gonzaga, L., et al. (2013). Improved design of polymeric composite electrothermal micro-actuator for high track density hard disk drives. Microsystem Technologies, 19(9-10), 1697-1704.en_US
dc.description.abstractRecently, we have developed a polymeric composite electrothermal micro-actuator for dual-stage applications in hard disk drives (HDDs). The polymer composite was demonstrated with a larger thermal expansion as compared to silicon. Yet, the previous design of polymeric composite thermal actuator was stiff, having a high mechanical resonant frequency at 33 kHz and a moderate static displacement stroke of 50 nm at 4 V. An even larger stroke above 100 nm is generally required to meet the need of HDD dual-stage systems. To meet the requirement for a large stroke, we presented an improved design of polymeric composite electrothermal micro-actuator by increasing flexibility of the composite thermal benders. As compared to the previous design, the new design doubled the displacement stroke up to 106 nm at 4 V while it maintained a high mechanical resonant frequency of 31 kHz, slightly below that of the previous design. In addition, a finite element analysis showed that electrothermal activation of the micro-actuator is rather localized and it causes only a small temperature rise of the neighbouring parts of head gimbal assembly. These good performances suggested that this improved design of thermal micro-actuator is promising for high bandwidth dual-stage positioning systems in future high track density HDDs.en_US
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)
dc.relation.ispartofseriesMicrosystems technologiesen_US
dc.rights© 2013 Springer-Verlag Berlin Heidelberg. This is the author created version of a work that has been peer reviewed and accepted for publication by Microsystems technologies, Springer-Verlag Berlin Heidelberg . It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1007/s00542-013-1884-y].
dc.subjectDRNTU::Engineering::Electrical and electronic engineering::Computer hardware, software and systems
dc.titleImproved design of polymeric composite electrothermal micro-actuator for high track density hard disk drivesen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.description.versionAccepted version

Files in this item


This item appears in the following Collection(s)

Show simple item record