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NPTEL Lec4

The document discusses various sensor technologies, highlighting their materials, physics, devices, applications, and substrates. It emphasizes the multi-disciplinary nature of sensor development, requiring knowledge from fields such as chemistry, mechanics, and electronics. Additionally, it presents examples of innovative sensor applications and poses questions for further discussion on sensor operation without electronic systems.

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259 views8 pages

NPTEL Lec4

The document discusses various sensor technologies, highlighting their materials, physics, devices, applications, and substrates. It emphasizes the multi-disciplinary nature of sensor development, requiring knowledge from fields such as chemistry, mechanics, and electronics. Additionally, it presents examples of innovative sensor applications and poses questions for further discussion on sensor operation without electronic systems.

Uploaded by

nss rao
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Sensor Technologies

Physics, Fabrication, and Circuits

Dr. Mitradip Bhattacharjee

Electrical Engineering and Computer Science


Indian Institute of Science Education and Research Bhopal
INDIA
Recap -

Materials for sensors


Sensors
Physics Device Application Substrates
• Mechanical • FET • Physical Sensors • Flexible Sensors
• Electromechanical • MOSFET • Chemical Sensors • Wearable Sensors
• Capacitive • MOS • Biosensors • Rigid Sensor
• Inductive • MEMS • Biomedical Sensors
• Optical • NEMS • Environmental Sensors States
• Thermal • Solid-State Sensors
• Magnetic Material • Liquid-State Sensors
• Microfluidic Dimensions
• Silicon Sensors
• Piezoelectric • Nano Sensors • Polymer Sensors
• etc. • Micro Sensors • Metal-oxide sensors
• Carbon based Sensors
Multi-disciplinary aspect
Microdroplet based Disposable Sensor Patch
for Detection of <alpha>-amylase in Human
Blood Serum
Microfluidics

Carrier Transport

Chemistry

Electronics

Biosensors and Bioelectronics, 2020.165: p.112333. (DOI: 10.1016/j.bios.2020.112333)


Multi-disciplinary aspect
Smart Bandage with Wireless Strain and
Temperature Sensors and Battery-less
NFC Tag
Temperature Sensing

Strain Sensing

Chemistry

Electronics

Biomedical

IEEE Internet of Things (IoT) Journal, 2021. 8: p.5093 - 5100. (DOI: 10.1109/JIOT.2020.3048282)
Multi-disciplinary aspect
Flexible Piezoresistive Pressure and
Temperature Sensor Module for
Continuous Monitoring of Cardiac Health

Temperature Sensing

Pressure Sensing

Mechanics

Electronics

Biomedical

IEEE Journal on Flexible Electronics (J-FLEX), (Accepted) 2023.


Wiley Advanced Engineering Material, 2022. 24: p.2200500. (DOI: 10.1002/adem.202200500)
3 take-home messages:

• Sensor field is multi-disciplinary

• In general, sensor needs a electronic system for its operation

• One sensing application may require knowledge from more than 3 disciplines

Let’s think -

• Can a sensor work without an electronic system?


Upcoming Discussion -

Sensor Terminologies

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