N.Y. Shen

Publications (2)0 Total impact

• Conference Proceeding: Polymer surface electrochemistry for charge-based sensing in chemoreceptive neuron MOS (CvMOS) transistors

  N.Y. Shen, Zengtao Liu, Sheng-Yu Peng, E.A. Minch, E.C. Kan
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  ABSTRACT: The charge-based sensing in chemoreceptive neuron MOS (CvMOS) transistors with the extended floating-gate structure has brought forth unique features that are beneficial to the system integration of chemical sensing. Surface chemical functionalization by polymers as the sensing-gate coatings has been employed to selectively sense polar and electrolytic fluids, which are physically isolated front the integrated CMOS circuitry with the modular insulation scheme. The repeatable measurement results have shown both good sensitivity and selectivity. The subthreshold-slope responses for various surface coatings have been analyzed and the corresponding circuitry utilizing the high transconductance gain in the CMOS transistors has been proposed to rapidly extract the encoded information for the CvMOS devices.
  Sensors, 2003. Proceedings of IEEE; 11/2003
• Conference Proceeding: The chemoreceptive neuron MOS transistors (CνMOS): a novel floating-gate device for molecular and chemical sensing

  N.Y. Shen, Z. Liu, B.A. Minch, E.C. Ken
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  ABSTRACT: We propose a novel chemoreceptive neuron MOS transistor (CνMOS) with distinctive features that are crucial to molecular sensing system integration. We have fabricated CνMOS transistors with generic molecular receptive areas and experimentally demonstrated high sensitivity from channel current changes and large dynamic range from subthreshold slope shifts in sensing polar and electrolytic liquids. Preliminary measurements have validated most of our assumptions about the performance of these devices and have indicated the feasibility in developing a micropower neuromorphic electronic interface based on existing CMOS technology.
  TRANSDUCERS, Solid-State Sensors, Actuators and Microsystems, 12th International Conference on, 2003; 07/2003