AFM-based data storage and microscopy

Details AFM-based data storage and microscopy AFM-based data storage and microscopy

2006-05-30

2006-05-30

Korzuch, William (Department: 2653)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

C369S127000, C250S306000

Reexamination Certificate

active

07054257

ABSTRACT:
Read/write components for AFM-based data storage devices are provided. In particular embodiments, a read/write component comprises lever means and a support structure, the lever means being connected to the support structure for substantially pivotal movement. The lever means provides first and second current paths between a pair of electrical supply lines on the support structure via which the lever means can be connected in use to power supply means operable in a write mode and a read mode. A write-mode heater is provided on the lever means in the first current path, and a read/write tip is provided on the write-mode heater. A read-mode heater is provided on the lever means in the second current path. Decoupling means is arranged to inhibit current flow to the write-mode heater via the first current path in use when the power supply means is operated in the read mode. The component, with separate write and read-mode heaters, can thus be addressed in both the write and read modes via a single pair of supply lines. Other embodiments provide read/write components employing a thermal decoupling mechanism, and read/write components where read-sensing is performed by a proximity sensing arrangement between the lever means and the support structure. Sensing apparatus for atomic force microscopes is also provided where tip movement can be detected via similar proximity sensing arrangements.

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