Part I General -- 1. Introduction to Environmental, Chemical and Medical Sensors -- Part II Environmental Sensors -- 2. Sensors for air monitoring -- 3. Gold Nanostructure in sensor technology: Detection and estimation of chemical pollutants -- 4. Impedimetric Sensors in environmental analysis: An overview -- Part III Chemical Sensors -- 5. Inkjet Printed Sensors on Flexible Substrates -- 6. Sensing using microfluidic platform -- 7. Green Synthesized Nanoparticles as Potential Nanosensors -- Part IV Medical Sensors -- 8. Fabrication of nanostructures with bottom-up-approach and their utility in diagnostics, therapeutics and others -- 9. Miniaturized Sensors and Actuators for Biological Studies on Small Model Organisms of Disease -- 10. Polymeric Patterned Surface for Biomedical Applications -- 11. Nanoparticles based Diagnostics -- 12. Designing of a Low-Cost Optical Density Meter for Medical Applications -- 13. Flexible Sensors for Biomedical Application -- 14. Low-cost paper analytical devices for environmental and biomedical sensing applications -- 15. DNA based sensors -- 16. The Microflow Cytometer -- 17. Microfluidic Sensors for Mechanophenotyping of Bio-logical Cells.