Title :
Electrostatic microactuator for future hard disk drive
Author :
Sassolini, Simone ; Del Sarto, Marco ; Bald, Lorenzo
Abstract :
Hard disk drives are the most widely used data-storage medium. The TPI (track per inch) limit is related to mechanical resonances of the positioning arm and to low frequency bearing effects. A secondary actuator must be able to precisely position the R/W head, with high bandwidth, with respect to the magnetic track, without any interference with the magnetic data recorded on the disk. MEMS technology allows the fabrication of such electrostatic microactuators for the secondary stage in HDDs.
Keywords :
disc drives; electrostatic actuators; hard discs; machine bearings; magnetic heads; micropositioning; resonance; MEMS technology; R/W head positioning; TPI limit; actuator bandwidth; dual stage actuators; electrostatic microactuator fabrication; hard disk drives; high density HDD; low frequency bearing effects; magnetic data storage medium; magnetic tracks; positioning arm mechanical resonances; read/write heads; recorded magnetic data interference; secondary actuator precise positioning; track per inch limit; Actuators; Bandwidth; Electrostatics; Frequency; Hard disks; Interference; Magnetic heads; Magnetic levitation; Magnetic resonance; Microactuators;
Conference_Titel :
Magnetic Recording Conference, 2002. Digest of the Asia-Pacific
Conference_Location :
Singapore
Print_ISBN :
0-7803-7509-2
DOI :
10.1109/APMRC.2002.1037695
