SubjectsSubjects(version: 877)
Course, academic year 2020/2021
  
Chemical Sensors - M444009
Title: Chemické senzory
Guaranteed by: Department of Physics and Measurement (444)
Actual: from 2020
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 [hours/week]
Capacity: unlimited / unlimited (unknown)
Min. number of students: unlimited
Language: Czech
Teaching methods: full-time
Level:  
For type: Master's (post-Bachelor)
Note: course can be enrolled in outside the study plan
enabled for web enrollment
Guarantor: Vrňata Martin prof. Ing. Dr.
Interchangeability : N444011
Annotation -
Last update: Vrňata Martin prof. Ing. Dr. (26.04.2018)
The subject includes an overview of detection principles which are applied in modern sensors of chemical quantities. The main attention is focused on chemiresistors 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, 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: Vrňata Martin prof. Ing. Dr. (26.04.2018)

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: Vrňata Martin prof. Ing. Dr. (26.04.2018)

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: Vrňata Martin prof. Ing. Dr. (26.04.2018)

http://www.journals.elsevier.com/sensors-and-actuators-b-chemical

http://www.figaro.co.jp/en/top.html

http://www-mat.ee.tu-berlin.de/research/chemsens/chemsens.htm

Teaching methods -
Last update: Vrňata Martin prof. Ing. Dr. (09.05.2018)

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

The lectures are provided in English language. Basic principles of the sensors and their tranducing mechanisms are explained on the practical demonstrations.

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

The obligatory part of the subject is presence in laboratory works.

Requirements to the exam -
Last update: Vrňata Martin prof. Ing. Dr. (26.04.2018)

Written test and oral discussion with satisfactory result.

Syllabus -
Last update: Vrňata Martin prof. Ing. Dr. (26.04.2018)

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. Nanostructured 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: Vrňata Martin prof. Ing. Dr. (26.04.2018)

Physics, Physical Chemistry, Fundamental Chemistry.

Course completion requirements -
Last update: Vrňata Martin prof. Ing. Dr. (09.05.2018)
  • elaboration of written material dedicated to two assigned topics
  • discussion on these two topics with satisfactory result
  • elaboration of all laboratory protocols
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
 
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