International Business Machines Corporation

Icko Et Iben

Daniel James Winarski

Dylan J Boday

Jason Liang

Wayne Isami Imaino

Anna Wanda Topol

Stephen Leonard Schwartz

David Berman

Hoodin Hamidi

Provided are a magnetic tape head, a magnetic tape drive, and a computational device in which the magnetic tape head is comprised of a plurality of elements, wherein a pitch between adjacent elements of the plurality of elements is not identical. Selected elements of the plurality of elements that are shifted from a nominal position are selected in a symmetrical manner in the plurality of elements. A total of shifts of the elements of the plurality of elements that are shifted add up to a desired total shift to realign a plurality of modules, such that the median head span of each module type match as closely as possible to a desired value of a head span for all module types.

Mechanism to shift the head span of a tape head at a wafer level

Described are embodiments to ensure that the equipment utilized to detect antigens is reliable and accurate. Accordingly, one embodiment of the invention includes a calibration assembly having nanoparticles, with known magnetic properties, spaced apart at known y-axis locations along the calibration assembly. In one embodiment, the calibration assembly may be used to calibrate a matched filter of the write and read circuitry. Because the calibration assembly comprises nanoparticles with known magnetic properties the read response of the read circuitry to a particular nanoparticle may be stored in the matched filter as an ideal signal for that nanoparticle. The ideal signal stored in the matched filter may then be utilized for reliably and accurately detecting antigens. Still further, the ideal signal stored within the matched filter of the write and read circuitry may be utilized in a correlation test of a calibration assembly to ensure that the calibration assembly is within a manufacturer's or user's acceptable standards for calibration of their write and read assemblies.

Calibration assembly for aide in detection of analytes with electromagnetic read-write heads

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San Jose, CA, United States of America

Icko Et Iben