MPŠ MP&Scaron MP&Scaron MP&Scaron Avtorji

Jožef Stefan
Postgraduate School

Jamova 39
SI-1000 Ljubljana

Phone: +386 1 477 31 00
Fax: +386 1 477 31 10


Course Description

Optical Chemical Sensors


Sensor Technologies


prof. dr. Aleksandra Lobnik


• understanding the principle of operation of optical chemical sensors with an understanding of all involved components (indicators, polymers, immobilization methods, optical fibers, etc.),
• interpretation of sensor characteristics (e.g. working range, limit of detection, response time, reversibility, selectivity, sensitivity) and understanding the importance of the validation of a newly prepared sensor,
• knowledge of different materials for the preparation of nanosensors’ receptors,
• knowledge of optical chemical sensors’ different fields of application.

• selection of appropriate components for the optical sensor used for the determination of a selected analyte,
• consideration of all possible interfering signals in the determination of the analyte,
• evaluation of the optical sensor with respect to sensor characteristics, and validation in comparison with the reference method,
• collection and interpretation of results, preparation of reports on the experiments.


• Chemical sensors in general and analytical aspects of sensors, the importance of using fiber optic chemical sensors and the advantages and disadvantages in comparison with electrochemical sensors and other classical analytical methods (e.g. chromatographic methods, atomic absorption, mass spectrometry).
• Constituent components of an optical chemical sensor (indicators, polymers, optical fibers) with emphasis on sensor’s receptor part; optical properties and measurement of analytical signals (spectroscopic methods).
• Use of optical sensors in different areas – environment, safety and protection, sports, medicine, smart textiles, etc., and for the determination of a variety of chemical and physical parameters.
• Trends in the preparation of nano-sensors and nano-size effects on the sensor’s characteristics.
• Individual in-depth analysis related to the issues of the student's doctoral thesis.

Course literature:

• F. Baldini, A.N. Chester, J. Homola, S. Martellucci, Optical Chemical Sensors, NATO Science Series, Springer, The Nederlands, 2006
• R. Narayanaswamy, O.S. Wolfbeis, Optical Sensors, Springer, Berlin Heidelberg, 2004
• Lobnik, M. Turel, Š. Korent Urek, A. Košak, Nanostructured materials use in sensors: their benefits and drawbacks in Carbon and Oxide Nanostructures: synthesis, characterization and applications, Noorhana Yahya (ur./Ed.), Springer-Verlag, Berlin Heidelberg, 2010, 307-354.

Selected papers from periodicals: Sensors and Actuators B, Analyst, Analytica Chimica Acta, Journal of Sol-Gel Science and Technology.

Significant publications and references:

• No. of articles (WoS): 43
• No. of citations (WoS): 531
• h-index (WoS): 12

• LOBNIK, Aleksandra, OEHME, Ines, MURKOVIČ, Ivana, WOLFBEIS, Otto S. pH optical sensors based on sol-gels: Chemical doping versus covalent immobilization. Anal. Chim. Acta, 1998, 367, 159-165; št. čistih citatov/No. of citations: 76.
• LOBNIK, Aleksandra, TUREL, Matejka, KORENT UREK, Špela, KOŠAK, Aljoša. Nanostructured materials use in sensors: their benefits and drawbacks. V/In: YAHYA, Noorhana (ur./Ed.). Carbon and oxide nanostructures: synthesis, characterization and applications, (Advanced structured materials, Vol. 5). Springer, Berlin Heidelberg, 2011, 307-354.
• LOBNIK, Aleksandra. Absorption-based sensors. V/In: BALDINI, Francesco (ur./Ed.). Optical chemical sensors, (NATO science series, Series II, Mathematics, physics, and chemistry, Vol. 224). Dordrecht: Springer, cop. 2006, 77-98.
• LOBNIK, Aleksandra, KORENT UREK, Špela. Postopek in optični kemijski senzor s sol-gel membrano za detekcijo organofosfatov: patent št. SI 23556 A, datum objave 31.5.2012; patentna prijava št. P-201000405 z dne 29. 11. 2010. Ljubljana: Urad RS za intelektualno lastnino, 2012. [7, 2] str. / Sol-gel based optical chemical sensor for detection of organophosphates and method for preparation thereof: patent No. SI 23556 A, publication date 31.5.2012; patent application No. P-201000405 dated 29. 11. 2010. Ljubljana: The Slovenian Intellectual Property Office, 2012. [7, 2].
• ČAJLAKOVIĆ, Merima, LOBNIK, Aleksandra. Metoda in optični senzor za kontinuirano merjenje raztopljenega vodikovega peroksida: patent SI 21110 A, datum objave 30.06.2003 : št. prijave 200100317, datum prijave 10.12.2001. Ljubljana: Urad Republike Slovenije za intelektualno lastnino, 30 cm. 3 f. / Optical sensor for continuous measurement of dissolved hydrogen peroxide and method for preparation thereof: patent SI 21110 A, publication date 30.06.2003 : application No. 200100317, application date 10.12.2001. Ljubljana: The Slovenian Intellectual Property Office, 30 cm. 3 f.


Written examination (50%)
Seminar work and its oral defense (50%)

For a successfully passed exam a student must achieve at least 60% of all possible points for each particular part of above obligations.

Students obligations:

Written examination.
Seminar work and its oral defense.