Design Problems on Magnetic Recording Equipment

Design Considerations in Pre-d Receiving and Recording Equipment

Design factors to be considered in wide band Pre-D recording and playback equipment for usage in a versatile Pre-D system are presented. These design factors are introduced in a discussion of both the down-translator and up-translator. The mechanisms which produce spurious outputs from the up-translator and the effects caused by these spurious outputs are treated in detail. The extension of Pre...

Polar code design and decoding for magnetic recording

Heat-Assisted Magnetic Recording: Fundamental Limits to Inverse Electromagnetic Design

Heat-Assisted Magnetic Recording: Fundamental Limits to Inverse Electromagnetic Design by Samarth Bhargava Doctor of Philosophy in Engineering – Electrical Engineering and Computer Sciences University of California, Berkeley Professor Eli Yablonovitch, Chair In this dissertation, we address the burgeoning fields of diffractive optics, metals-optics and plasmonics, and computational inverse prob...

System Problems & Equipment Manufacturers

R readers of this column know that I don’t hesitate to criticize equipment manufacturers for their technically parochial and/or deficient engineering which ultimately drives system installers, maintenance technicians and users crazy. Although I'm an instructor at a number of seminars and workshops each year, the by Bill Whitlock recent Syn-Aud-Con JENSEN TRANSFORMERS Grounding and Shielding Wor...

Magnetic Nanoparticle Arrays Self-Assembled on Perpendicular Magnetic Recording Media

We study magnetic-field directed self-assembly of magnetic nanoparticles onto templates recorded on perpendicular magnetic recording media, and quantify feature width and height as a function of assembly time. Feature widths are determined from Scanning Electron Microscope (SEM) images, while heights are obtained with Atomic Force Microscopy (AFM). For short assembly times, widths were ~150 nm,...