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Total internal reflection ellipsometry
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology.
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis summarizes the work performed on the development and implementation of the optical measurement technique called total internal reflection ellipsometry (TIRE).

The TIRE principle is based on spectroscopic ellipsometry performed under conditions of total internal reflection. This configuration is suitable for monitoring and analysis of thin semitransparent films and changes in/on these films due to exposure to various media (liquid or gas). When metal films are used this technique can be further extended with the surface plasmon resonance (SPR) effect forming a measurement method, which allows measurements with very high precision. The main advantages of TIRE are the possibility for measurements in opaque liquids and very good detection limits, both unavailable with the complementary techniques, ellipsometry and SPR, used in their conventional mode.

The measurement principles of ellipsometry and surface plasmon resonance have been known for a long time and these techniques are currently widely used in various areas of science and technology. Furthermore, internal reflection ellipsometry has been reported several years ago and possibilities offered by this technique have been discussed by several scientists. However, so far there has been no attempt to give a more comprehensive report containing the combination of theoretical aspects, technical development and practical applications all-in-one. Therefore, the main goal of this work was to give some deeper insight into the TIRE technique by focusing on the following aspects: theoretical and mathematical tools used in TIRE and development of the measurement system with its applications. Unfolding the above - the aim of the TIRE project is to review what has been done so far in the area of TIRE and update this with the current results. Included is also developing a set of components of the TIRE measurement system, and understanding the possible technical problems which may show up, with an attempt to resolve them. Finally, the possible applications of the TIRE technique in various areas of science and technology are exemplified, with focus on the advantages over the currently used techniques.

The TIRE technique is suitable for monitoring of adsorption/ desorption of molecules from various liquid/gas media on the surfaces of the material playing the role of the substrate, as well as for studying the material itself. Within the TIRE project three types of applications have been studied. The first was in situ studies of protein adsorption on thin metal films, with use of SPR extended TIRE. The information obtained was more precise and complete than usually obtainable from SPR and conventional ellipsometry. With appropriate technical setup there is a potential to resolve the morphology of adsorbed multi-layered protein structures with TIRE. The behaviour of proteins on metals is of great importance in many areas of bio-sciences, including medicine (e.g. implants in the human body). The other two applications studied were more technical, with possible industrial relevance: adsorption and subsequent cleaning of substances from milk (useful i.e. for pipeline monitoring in the diary industry) and studies on corrosion on thin copper layers (useful e.g. for circuit board control in the microelectronics industry).

Place, publisher, year, edition, pages
Linköping: Linköpings universitet , 2005. , 38 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 966
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-29394Local ID: 14728ISBN: 91-85457-16-7 (print)OAI: oai:DiVA.org:liu-29394DiVA: diva2:250208
Public defence
2005-10-14, Hörsal Planck, Fysikhuset, Linköpings universitet, Linköping, 10:15 (Swedish)
Opponent
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2013-02-26
List of papers
1. Total internal reflection ellipsometry: design of experimental setup
Open this publication in new window or tab >>Total internal reflection ellipsometry: design of experimental setup
(English)Manuscript (preprint) (Other academic)
Abstract [en]

A design of an experimental setup for total internal reflection ellipsometry is presented and possible component types are described and discussed. Advantages and drawbacks of selected designs based on selection of different components are discussed briefly and examples of applications are given.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-89504 (URN)
Available from: 2013-02-26 Created: 2013-02-26 Last updated: 2013-10-14
2. Total internal reflection ellipsometry: principles and applications
Open this publication in new window or tab >>Total internal reflection ellipsometry: principles and applications
2004 (English)In: Applied Optics, ISSN 0003-6935, Vol. 43, no 15, 3028-3036 p.Article in journal (Refereed) Published
Abstract [en]

A concept for a measurement technique based on ellipsometry in conditions of total internal reflection is presented. When combined with surface plasmon resonance (SPR) effects, this technique becomes powerful for monitoring and analyzing adsorption and desorption on thin semitransparent metal films as well as for analyzing the semitransparent films themselves. We call this technique total internal reflection ellipsometry (TIRE). The theory of ellipsometry under total internal reflection combined with SPR is discussed for some simple cases. For more advanced cases and to prove the concept, simulations are performed with the Fresnel formalism. The use of TIRE is exemplified by applications in protein adsorption, corrosion monitoring, and adsorption from opaque liquids on metal surfaces. Simulations and experiments show greatly enhanced thin-film sensitivity compared with ordinary ellipsometry.

National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-41347 (URN)10.1364/AO.43.003028 (DOI)55634 (Local ID)55634 (Archive number)55634 (OAI)
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-10-14
3. Total internal reflection ellipsometry
Open this publication in new window or tab >>Total internal reflection ellipsometry
2000 (English)In: Eurosensors XIV: The 14th European Conference on Solid-State Transducers : Book of Abstracts / [ed] R. de Reus, S. Bouwstra, MIC , 2000, 239-242 p.Conference paper, Published paper (Refereed)
Abstract [en]

A new measurement technique combining ellipsometry and total internal reflection is presented. This technique is called total internal reflection ellipsometry and opens new possibilities for measuring adsorption on metalsurfaces. Very promising results from protein adsorption on a gold surface are presented. Also a schematic design of the instrument used in total internal reflection ellipsometry is included. The main advantage compared to normal ellipsometry is that measurements can be done in opaque ambients because of total internal reflection.

Place, publisher, year, edition, pages
MIC, 2000
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-89506 (URN)87-899-3551-9 (ISBN)
Conference
The 14th European Conference on Solid-State Transducers, 27-30 August 2000 Copenhagen, Denmark
Available from: 2013-02-26 Created: 2013-02-26 Last updated: 2015-03-26
4. Protein monolayers monitored by internal reflection ellipsometry
Open this publication in new window or tab >>Protein monolayers monitored by internal reflection ellipsometry
2004 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 455-456, 716-721 p.Article in journal (Refereed) Published
Abstract [en]

Total internal reflection ellipsometry (TIRE) in spectroscopic mode in the wavelength range 400–1200 nm is employed in situ at a solid/liquid interface for investigation of protein adsorption on thin semitransparent gold films. In this configuration, the surface plasmon resonance phenomenon gives a large enhancement of the thin film sensitivity. Adsorption of a monolayer of the protein ferritin is monitored kinetically in situ and results in a change in the ellipsometric parameter Δ of more than 90° compared to 3° in similar ellipsometric measurements on gold substrates. This large sensitivity demonstrates a potential for sensor applications. The ferritin layer optical function is modeled with a Cauchy dispersion model resulting in a layer thickness of 9.2 nm, in good agreement with the dimension of the ferritin molecules. A transition layer between the protein film and the gold layer is necessary to introduce in the model to account for interactions between the protein layer and the gold film. The large sensitivity of TIRE for thin layers opens up a pathway to analyze in detail the structure of thin protein layers provided that a further development of the experimental setup and the model for the protein layer is carried out.

National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-41359 (URN)10.1016/j.tsf.2004.01.037 (DOI)55661 (Local ID)55661 (Archive number)55661 (OAI)
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-10-14
5. Copper corrosion monitoring with total internal reflection ellipsometry
Open this publication in new window or tab >>Copper corrosion monitoring with total internal reflection ellipsometry
2003 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, Vol. 150, no 11, B536-B539 p.Article in journal (Refereed) Published
Abstract [en]

A technique for in situ monitoring of changes on surfaces of semitransparent thin films is presented. This technique combines ellipsometry and total internal reflection and is called total internal reflection ellipsometry. It utilizes the high surface sensitivity of ellipsometry and can be applied to detect and quantify very small changes on thin film surfaces. One example on an application is corrosion monitoring. The main advantage in comparison to ordinary ellipsometry is that measurements are done from the “back side” of the sample and thus the probe beam does not propagate through and will not be influenced by the media reacting with the surface. An overview of total internal reflection ellipsometry and results from corrosion monitoring on thin copper films are presented.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-46437 (URN)10.1149/1.1618224 (DOI)
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2013-10-14
6. In situ monitoring of metal surfaces exposed to milk using total internal reflection ellipsometry
Open this publication in new window or tab >>In situ monitoring of metal surfaces exposed to milk using total internal reflection ellipsometry
2003 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, Vol. 94, no 3, 247-252 p.Article in journal (Refereed) Published
Abstract [en]

A technique combining ellipsometry with total internal reflection is presented. The method is called total internal reflection ellipsometry (TIRE) and is suitable for monitoring of internal surfaces which opens new possibilities for measuring adsorption on metal surfaces in opaque liquids. Results from measurements of adsorption of milk and subsequent cleaning with sodium hydroxide on metal surfaces are given. These include studies on gold, iron, and chromium surfaces. A schematic design of the instrument used in TIRE is included. The main advantages of the system are non-invasive probing, fast response, and high sensitivity. The method has potential for applications in monitoring of internal surfaces of pipelines in industrial processes.

Keyword
Ellipsometry, Surface cleaning, Total internal reflection
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-46471 (URN)10.1016/S0925-4005(03)00382-4 (DOI)
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2013-10-14
7. Total internal reflection ellipsometry: thickness sensitivity in the pm-range for protein adsorption
Open this publication in new window or tab >>Total internal reflection ellipsometry: thickness sensitivity in the pm-range for protein adsorption
(English)Manuscript (preprint) (Other academic)
Abstract [en]

Total internal reflection ellipsometry (TIRE) is used to study adsorption of human serum albumin and fibrinogen on thin gold films. TIRE shows very high sensitivity for protein mono-layers adsorbed on metal surfaces when surface plasmon resonance effects are ut ilised. The measured data, expressed in ellipsometric angles ψ and Δ are of several orders of magnitude larger in comparison to those from similar experiments performed with traditional ellipsometry. TIRE opens a new path for precise studies of organic layers adsorbed on metal surfaces, with a potential for resolving the adsorbed layer micro-structure.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-89558 (URN)
Available from: 2013-02-26 Created: 2013-02-26 Last updated: 2013-10-14

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