**Author details**

*Gas Sensors*

temperature.

application ambient.

• It should be less portable.

and of low cost.

**2. Conclusions**

**Acknowledgements**

**Conflict of interest**

tion of this paper.

(File No. PDF/2016/002827).

• The material should sensitive in lower explosive limit (LEL) for explosive gases.

• The material should have high sensitivity over a wide range of humidity and

• The sensor material should have rapid response to the variation of gas concentra-

• The material should not react with any chemical contaminants present in the

• The construction of the sensor should preferably be simple using IC technology

Nanostructured semiconducting materials are the most promising materials for study of sensors because of their much surface to volume ratio. We have been interested in carrying out our investigations with a new material that possess good sensitivity for the LPG concentration at the LEL level, with properties that are stable over time and thermal cycling after exposure to the various species likely to be present in the ambient. Titania show very good surface reactivity and they have temperature dependent surface morphology. In this chapter, thorough experimental investigation was carried out in order to develop electrical type LPG sensor using

Dr. R.K. Sonker acknowledges the financial support provided by the SERB-National Post-Doctoral Fellow, under the DST funded project, government of India

The authors declare that there is no conflict of interests regarding the publica-

thin films of nanosized Titania with some other additives material.

• It should quickly respond to any fast changes in the ambient.

• The sensitivity should be independent of the ambient temperature.

tion and good reproducibility of the electrical signal.

• It should show stable characteristics for a long time.

• The device should be operated by a battery.

**96**

Rakesh Kumar Sonker1 \*, Saroj Radheyshyam Shabajeet2 , Rahul Johari3 and Balchandra Yadav2

1 Department of Physics and Astrophysics, University of Delhi, Delhi, India

2 Nanomaterials and Sensor Research Laboratory, Department of Applied Physics, Babasaheb Bhimrao Ambedkar University, Lucknow, UP, India

3 Department of Applied Sciences and Humanities, Jamia Millia Islamia, New Delhi, India

\*Address all correspondence to: rakesh.sonker81@gmail.com

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
