KJ8056: Chemical Sensors and Biosensors

KJ8056: Kjemiske og biologiske sensorer / Chemical Sensors and Biosensors

This subject is tought at Norwegian University of Science and Technology (NTNU ), Department of Chemistry, NO-7491 Trondheim, NORWAY

Course Details
Lectures: Fall semester, 2 hours a week. Teaching language: English. Oral examination. Credits: 7.5 ECTS.

Course Lecturer
Florinel Gabriel BANICA
Tel.: +(47) 73 59 69 57
E-mail: F.Banica(a)chem.ntnu.no
Office: Realfagbygget, Room D2-127

SITE CONTENTS

A short presentation of the topic
Pensum/Syllabus
Reading Material
Periodicals
Web sites dedicated to Chemical Sensors

What a chemical sensor is expected to be

A chemical sensor is a self contained probe that provides in real time information about the chemical composition of its surroundings.

To this end, it has to perform two functions:

Recognition (sensing), which consists of a specific interaction with a component of the sample (analyte). More>>

Transduction, which represents the ensuing modification of a physical property, that can be converted into a measurable physical signal (electrical, optical, etc.). The signal is further employed for assessing the analyte concentration. More>>

An example: the glass electrode is able to recognize the hydrogen ion by selective ion exchange and gives rise to a membrane electric potential that is a function of hydrogen ion concentration.

What a chemical sensor looks like?

Analogy

Advantages of chemical sensors

Substitution of standard analytical procedures by fast detection and analysis using dedicated sensors;
Automation of the analysis and monitoring of chemical quantities;
Field analysis by means of portable instruments

Applications

Industry: process analytical chemistry;
Environment: automatic monitoring of chemical pollution
Biomedical Science: fast and/or in vivo monitoring of drugs and biologically important compounds (e.g. O₂, CO₂ and glucose content in blood)
Food industry and Biotechnology: automatic control of chemical parameters,such as pH, O₂and CO₂ content, or nutrient concentration.

An application: Measuring pH in meat

Measuring pH in slaughtered meat is a good way to monitor product quality. A lance-shaped ISFET probe (Sentron), with a large handle for good grip, is an ideal solution for fast, accurate and most of all, safe measurements. More>>

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SYLLABUS

Main sections

Electrochemical sensors
Biosensing - General Aspects
Fiber-Optic Chemical Sensors
Microgravimetric Sensors and Acoustic Devices
Solid-state Gas Sensors

Detailed Table of Contents

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READING MATERIAL

Florinel-Gabriel Banica, Chemical Sensors and Biosensors: Fundamentals and Applications, John Wiley and Sons, 2012.

Available at
http://www.amazon.com/gp/search?index=books&linkCode=qs&keywords=0470710667
http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0470710667,descCd-tableOfContents.html

Other relevant texts

D. Diamond (Ed.), Principles of chemical and biological sensors, Wiley, New York, 1998..

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PERIODICALS

Papers on chemical and biological sensors are regularly published in all the major Analytical Chemistry journals. The following journals are dedicate exclusively to this topic:
Sensors and Actuators. B, Chemical (Elsevier Science)
Biosensors and Bioelectronics (Elsevier Science)
IEE Sensors Journal
Sensor Letters (American Scientific Publishers)
Sensors (A free, on line journal)
Sensors Update (Wiley)