Light contact and surfing state dynamics of air bearing sliders in hard disk drives

Negative/positive elastocaloric effect associated with vortex domain in the Bi 4 Ti 3 O 12 ferroelectric nanoparticle

“…The low-dimensional ferroelectrics may provide a feasible solution to overcome these disadvantages [14]. The vortex domain structure would form in the low-dimensional ferroelectrics due to the truncation of long-range actions at the surfaces [15][16][17]. The low-dimensional ferroelectrics with vortex domain structure has attracted great interest because of the unique properties which are drastically different from those of their bulks and the promising applications in electronic devices.…”

Tribological Degradation of Head–Disk Interface in Hard Disk Drives Under Accelerated Wear Condition

“…The fragile area of a slider is observed to be varied with the designs of air bearing surface but mainly locates on the region of read/write element [12]. Disk wear appears to be less significant than slider wear due to its larger sliding area (whole circular track) [10] and lubricant protection [13]- [15]. The interaction between lubricant and slider is also raised as a hot topic since the slider dynamics induced by slider-lubricant interaction cannot be negligible under such a small recording regime.…”

Characterization of nonlinear, non-stationary, nano-scale surfing contact dynamics of TFC slider utilizing high order spectra detection

“…The existing research has clarified many nonlinear dynamics phenomena including primary resonance, sub harmonics, super harmonics and fractional harmonics and combination resonance as well as internal resonance by using the FFT spectrum (Xu et al 2007;Vakis et al 2009;Canchi and Bogy 2011;Shimizu et al 2011;Bogy 2010, 2012;Sheng and Xu 2011;Hua et al 2011;Salas and Talke 2013;Xu and Sheng 2011;Hua et al 2012). Chen et al (2012) investigated distinct dynamical phases during the light touchdown between the flying head and ultra-thin Abstract In this paper, the high order spectra approach is used to determine the surfing contact dynamics signatures of thermal flight control (TFC) air bearing slider in hard disk drives. Detection and identification of TFC slider surfing contact using LDV signal and higher order spectra analysis is presented.…”