Maximum-Likelihood Sequence Detector for Dynamic Mode High Density Probe Storage

— There is an ever increasing need for storing data in smaller and smaller form factors driven by the ubiquitous use and increased demands of consumer electronics. A new approach of achieving a few Tb per in2 areal densities, utilizes a cantilever probe with a sharp tip that can be used to deform and assess the topography of the material. The information may be encoded by means of topographic profiles on a polymer medium. The prevalent mode of using the cantilever probe is the static mode that is known to be harsh on the probe and the media. In this paper, the high quality factor dynamic mode operation, which is known to be less harsh on the sample and the probe, is analyzed for high density data probe storage purposes. It is demonstrated appropriate level of abstraction is possible that obviates the need for an involved physical model. The read operation is modeled as a communication channel which incorporates the inherent system memory due to the inter-symbol interference and the ...

• Type: Conference
• Year: 2009
• Where: GLOBECOM
• Authors: Naveen Kumar, Pranav Agarwal, Aditya Ramamoorthy, Murti V. Salapaka
• Keywords: Cantilever Probe, Data Probe Storage, Dynamic Mode Operation, GLOBECOM 2009, Telecommunications