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Fast Breaking Comments

By L. A. Patil

ESI Special Topics, October 2007
Citing URL - http://www.esi-topics.com/fbp/2007/october07-LAPatil.html

L. A. Patil answers a few questions about this month's fast breaking paper in the field of Engineering.


From •>>October 2007 - [late entry]

Field: Engineering
Article Title: Modified zinc oxide thick film resistors as NH3 gas sensor
Authors: Wagh, MS;Jain, GH;Patil, DR;Patil, SA;Patil, LA
Journal: SENSOR ACTUATOR B-CHEM
Volume: 115
Issue: 1
Page: 128-133
Year: MAY 23 2006
* Pratap Coll, PG Dept Phys, Mat Res Lab, Amalner 425401, Maharashtra, India.
* Pratap Coll, PG Dept Phys, Mat Res Lab, Amalner 425401, Maharashtra, India.

ST:  Why do you think your paper is highly cited?


“ Our research is intended for the well-being of human beings all across the world.”

This paper is related to the fabrication of RuO2-ZnO-based NH3 gas sensors. We have modified the ZnO material so that it shows a very high sensitivity, even to a very small amount of NH3 gas which occurs at a relatively lower operating temperature. We have developed and adopted a new technique (dipping) for the modification of sensor surfaces. Such modified surfaces show a very high selectivity of NH3 gas against other gases. This work is important because we have developed sensors which could indeed benefit larger sections of society.

ST:  Does it describe a new discovery, methodology, or synthesis of knowledge?

It describes a new and very simple methodology for modifying sensor surfaces for the selective detection of gases.

ST:  Would you summarize the significance of your paper in layman’s terms?

Ammonia is very important gas, which is indirectly related to the activities of laymen. Ammonia is produced and utilized extensively in many chemical industries, fertilizer factories, refrigeration systems, food processing, medical diagnosis, fire power plants, etc. A leak in any of these systems can result in exposure to serious health hazards. Ammonia is quite harmful and toxic by nature. Exposure to ammonia causes chronic lung disease, irritation, and even burning of the respiratory tract, etc.

Environmental pollution is a burning global issue. Pollution has raised its ugly head high above the global environment. Therefore, all industries working on and with ammonia should have a very sensitive detection and warning system for dangerous ammonia concentrations. Efforts are, therefore, made to develop the ZnO-based NH3 gas sensors which could monitor ammonia gas.

ST:  How did you become involved in this research, and were there any problems along the way?

Some of our friends are employed either in chemical industries, fertilizer factories, food processing, etc. They are always discussing the potential problems they are facing while at work in their plants and expecting solutions from me. These friends are a major driving force for the initiation and continuation of this research along the area of gas-sensing, in general, and NH3-sensing in particular. There were many problems encountered along the way, but tackling them has been my personal moral responsibility.

ST:  Where do you see your research leading in the future?

Sensors fabricated from bulk materials have some inherent limitations. We have, therefore, switched over to "nanomaterials-based gas sensors," which could show an outstanding gas-sensing performance. The Government of India has sanctioned me to lead their "Major Research Project" to develop nanomaterials for gas sensing.

ST:  Are there any social or political implications for your research?

Our research is intended for the well-being of human beings all across the world.End

Dr. L. A. Patil
Reader in Physics
Material Research Laboratory
P.G. Department of Physics
Pratap College
Maharashtra, India
(Affiliated with North Maharashtra University, Jalgaon, India)
 

ESI Special Topics, October 2007
Citing URL - http://www.esi-topics.com/fbp/2007/october07-LAPatil.html

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