Patent ID: 7656776
Filing Date: 2010-02-02
Classification: B82Y,G11B

Abstract:
1. A data storing and reading apparatus for storing and reading data in a nano device having a plurality of uniformly-sized and regularly arranged metal or semiconductor nano-dots insulated from each other by an insulating layer, comprising: a probe movable by a cantilever so as to be placed onto each nano-dot of the nano device; a bias power supply unit for supplying a storing bias voltage and a reading bias voltage between the probe and the nano device; a light beam generator for generating a light beam to detect a position of the probe; a position detector for detecting the light beam reflected from the probe and generating an output signal corresponding to a distance moved by the probe; an amplifier for amplifying an output signal of the position detector; and a detection circuit for reading the data stored in the nano-dot in response to an output signal of the position detector amplified by the amplifier, wherein wherein the data is stored in multiple levels in the nano-dots; and wherein the bias power supply unit is configured to continuously control polarity and amplitude of charges stored in the nano-dots by changing the storing bias voltage applied between the probe and the nano device.