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Optical properties of microstructures for computer screen photoassisted experiments
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics . Linköping University, The Institute of Technology.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Physics .
2006 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 89, no 25Article in journal (Refereed) Published
Abstract [en]

SU-8 microstructured devices aiding the fluorescence detection in computer screen photoassisted experiments are demonstrated. The structures exploit computer screens as controlled light sources and web cameras as imaging detectors, separating the excitation by total internal reflection and redirecting surface generated fluorescence toward the detector. The devices are essentially disposable and allow the collection of up to five times larger fluorescent signals, while remaining compatible with the formation of complex response patterns and with fluidic functions.

Place, publisher, year, edition, pages
2006. Vol. 89, no 25
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-37633DOI: 10.1063/1.2423246Local ID: 36905OAI: oai:DiVA.org:liu-37633DiVA: diva2:258482
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2010-12-30
In thesis
1. Integrated Optical Solutions for Ubiquitous Sensing
Open this publication in new window or tab >>Integrated Optical Solutions for Ubiquitous Sensing
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Ubiquitous chemical sensing aims at exploiting consumer electronic devices as temporary chemical sensing platforms. These devices are a highly disseminated infrastructure, not presently being exploited for chemical sensing purposes. The goal of the ubiquitous chemical sensing field is to create the methodologies and adapted devices to profit from this unexploited resource.

DVD drives, flat bed scanners and computer screens used in combination with web cameras, and mobile phones have been demonstrated as measuring platforms, during the past 10 years.

In particular the combination of computer screens with web cameras, a technique called the computer screen photo-assisted technique (CSPT), is the most versatile approach to support multiple types of optical detection phenomena, and together with mobile phones are the most ubiquitous type of platforms.

The versatility of CSPT comes from the ease with which one can configure a spectrally controlled, 2D micro-positioned, linearly polarized, wide angle and internally modulated illumination with a programmable screen, just by controlling the displayed contents. Concurrently, the imaging devices in CSPT enable one to capture arbitrary assay layouts, the evaluation of which can then be numerically customized.

The full exploitation of the CSPT platform requires optically adapted sensing interfaces and specialized methods, in order to increase sensitivity and make use of all available information, for a thorough and complete chemical sensing analysis. In this thesis I have explored the foundations of CSPT sensing on integrated devices, developing methods and sensing’s interfaces that provide enhanced optical detection customized to the CSPT platform.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2010. 63 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1355
National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-63709 (URN)978-91-7393-269-1 (ISBN)
Public defence
2010-12-15, Plank, E-huset, Campus Valla, Linköpings universitet, Linköping, 10:15 (English)
Opponent
Supervisors
Available from: 2010-12-30 Created: 2010-12-30 Last updated: 2011-01-03Bibliographically approved

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Lundström, IngemarMacken, StephenFilippini, Daniel

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