SubjectsSubjects(version: 947)
Course, academic year 2023/2024
Chemical Sensors - N444011
Title: Chemické senzory
Guaranteed by: Department of Physics and Measurement (444)
Faculty: Faculty of Chemical Engineering
Actual: from 2021
Semester: winter
Points: winter s.:6
E-Credits: winter s.:6
Examination process: winter s.:
Hours per week, examination: winter s.:2/3, C+Ex [HT]
Capacity: unknown / unknown (unknown)
Min. number of students: unlimited
Language: Czech
Teaching methods: full-time
Teaching methods: full-time
Is provided by: M444009
For type:  
Guarantor: Vrňata Martin prof. Dr. Ing.
Is interchangeable with: M444009
Examination dates   Schedule   
Annotation -
Last update: TAJ444 (16.12.2013)
The subject includes an overview of detection principles which are applied in modern sensors of chemical quantities. The main attention is focused on chemical gas sensors with semiconductive sensitive layers. There is given a detailed explanation of following topics: physico-chemical principles of detection, sensor architecture, selection of material for sensitive layers, deposition techniques of sensitive layers, measurement of sensor response in both dc- and ac- mode and mathematical methods of processing signal from both individual sensors and sensor arrays. Also overview of commercially produced chemical gas sensors and their application areas is included.
Aim of the course -
Last update: TAJ444 (26.08.2013)

The students will be able:

to classify chemical sensors according to the tranducing mechanism and have detailed knowledge of sensor operation principles and measurement modes

to apply chemical sensors in practice and to be acquainted with the contemporary trends in their research and development

Literature -
Last update: Fialová Jana (26.09.2013)

R:Janata J., Principles of Chemical Sensors, Amazon, New York, 2009, 0387699309

R:Korotcenkov G., Chemical Sensors Comprehensive Sensor Technologies: Volume 4 Solid State Sensors, Momentum Press, New York,1606502336

A:Kittel CH., Introduction to Solid State Physics, Sixth Edition, John Wiley & Sons, Inc., New York, 1998, 0274673376

Learning resources -
Last update: TAJ444 (26.08.2013)

Teaching methods
Last update: TAJ444 (13.09.2011)

Department of Physics and Measurements provide the education in the branch Chemical sensors.

Lectures are provided in English language. Basic principles are explained on the practical demonstrations.

Students obtain written materials with text of lectures for their annotations and study.

Obligatory part of the subject is presence on the organized excursion.

Requirements to the exam
Last update: TAJ444 (28.01.2008)

Written test and oral discussion with satisfactory result.

Syllabus -
Last update: TAJ444 (26.08.2013)

1. Classification of sensors; transducing mechanisms; basic terminology of sensors

2. Overview of detection mechanisms in chemical gas sensors

3. An introduction to physics of semiconductors (intrinsic and extrinsic semiconductor, p-n junction, Schottky junction, surface states)

4. Semiconductor gas sensor - detection mechanisms in dependence on operation temperature

5. Architecture of semiconductor gas sensors

6. Basic materials of sensitive layers, their properties and selection

7. Catalysts and dopants in sensitive layers, mechanisms of their function; selective membranes

8. Deposition technologies of sensitive layers

9. Sensor parameters and possibilities of their improvement

10. Modes of sensor operation and measurement (dc- and ac- sensitivity, Nyquist diagrams, equivalent circuit parameters)

11. Interferent species, inhibitors and catalytic poisons

12. Sensor arrays, electronic nose, methods of data processing (Principal Component Analysis, cluster analysis)

13. Commercially produced semiconductor gas sensors and their application

14. Contemporary trends in semiconductor gas sensors

Entry requirements
Last update: TAJ444 (28.01.2008)

Physics, Physical Chemistry, Fundamental Chemistry.

Registration requirements -
Last update: TAJ444 (26.08.2013)

Physics I

Physical Chemistry I

Teaching methods
Activity Credits Hours
Účast v laboratořích (na exkurzi nebo praxi) 0.5 14
Účast na přednáškách 1 28
Příprava na zkoušku a její absolvování 3 84
Účast na seminářích 1.5 42
6 / 6 168 / 168
Coursework assessment
Form Significance
Regular attendance 30
Examination test 10
Oral examination 60