JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

This course is intended to know sensor and actuators characteristics, principle of

operation and different types of micro and nano- sensor and also of Micro and Nano-actuators.

Course Outcomes:

• 1. To know the importance of physics behind sensor and actuator transduction.
• 2. To know working of linear, rotational, acceleration, force, torque, pressure, flow sensor, temperature, proximity, light, smart material, capacitive and inductive sensors in micro and nano dimensions
• 3. To know actuator operation and its characteristics such resolution, range, sensitivity, error, repeatability, linearity, accuracy and impedance etc.,

Prerequisite:

• 1. Basics of nano linear optics and electronics
• 2. Basic of sensors, physical, chemical, mechanics phenomenon’s related to sensors.

UNIT - I

Introduction & Sensor Characteristics: Nanotechnology, Sensors, Nanotechnology Enabled Sensors, Sensor Characteristics and Terminology, Static Characteristics, Dynamic Characteristics, Physical Effects Employed for Signal Transduction.

UNIT - II

Sensors & Physical Effects: Photoelectric Effect, Photo-dielectric Effect , Photoluminescence Effect, Electroluminescence Effect , Chemiluminescence Effect, Doppler Effect , Barkhausen Effect, Hall Effect, Nernst/Ettingshausen Effect , Thermoelectric (Seebeck/Peltier and Thomson) Effect, Thermoresistive Effect, Piezoresistive Effect, Piezoelectric Effect, Pyroelectric effect, Magneto- Mechanical Effect (Magnetostriction) , Mangnetoresistive Effect, Faraday-Henry Law.

UNIT - III

Mass-Sensitive & Conductivity Sensors: BAW Sensors, SAW Sensors Conductometric Sensors, Resistive and Capacitive Gas Sensors, Gas Sensors Based on Polycrystalline Semiconductors, Gas Sensors Made of Polymers and Gels, Resistive and Capacitive Sensors for Liquids.

UNIT - IV

Electrochemical Sensors: Potentiometric Sensors , Selectivity of Potentiometric Sensor, Ion- Selective Electrodes, The Ion-Selective Field Effect Transistor (ISFET), Measurement with Potentiometric Sensors, Amperometric Sensors Selectivity of Amperometric Sensors, Electrode Design and Examples, Measurement with Amperometric Sensors, Sensors Based on Other Electrochemical Methods, Electrochemical Biosensors, Classes of Electrochemical Biosensors.

UNIT - V

Thermometric & Optical Sensors: Sensors with Thermistors and Pellistors, Pyroelectric Sensors, Sensors Based on Other Thermal Effects, Optical Fibres as a Basis for Optical Sensors, Fibre Sensors Without Chemical Receptors (Mediators),Optodes: Fibre Sensors with a Chemical Receptor, Optodes with Simple Receptor Layers, Optodes with Complex Receptor Layers.

REFERENCE BOOKS:

• 1. Nanotechnology-Enabled Sensors, Kourosh Kalantar-zadeh, Springer publications (2007)
• 2. Chemical Sensors-An Introduction for Scientists and Engineers,Peter Gr¨undler, Springer publications (2006) M. Tech – I Year – I Sem. (Nano Tech.)