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1 2007

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A SuFET based sensors for nano-microscope

Sklyar R.

Journal of Automation Mobile Robotics and Intelligent Systems

2007

Vol. 1, No. 3

3-20

A superconducting field-effect transistor (SuFET) based transducer (sensor) with carbon nanotubes (CNT) or pickup coil kind of input circuit for the nerve and neuron impulses, DNA recombination signals, flows of biochemical molecules, micro- and nanoscopy, and biosusceptibility has been designed. A nanoSuFET with a high-temperature superconducting channel is introduced into the nerve fibre or brain tissue for transducing their signals in both directions. Pickup coils are implanted into an organism in order to obtain the natural or artificially excited biosignals from the organs and tissues. The range of picked up signals varies from 0.6 nA to 10 žA with frequencies from 20 to 2000 Hz. The output signal lies in the range of (-5¸5)V, (7¸0)×1017/cm3 molecules and (2¸10) pH. The sensitivity of this micro- or nanoscope can be estimated as HJ= 10-4 (A•m/?Hz) with SNR equal to 104. The sensitivity of an advanced first-order biogradiometer is equal to 3fT/?Hz. The smallest resolvable change in magnetic moment detected by this system in the band 10 Hz is 1 fJ/T.