Dubowski.ca
Laboratory for quantum semiconductors and
photon-based bionanotechnology
Wednesday, 25th of May 2022
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Publications

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Inside Our Research

  • Influenza A virus on the surface of GaAs (001)

    In a paper by V. Duplan et al., J. Biomed. Optics 14(5), 054042 (2009), we report on the successful immobilization of the influenza A virus on the biofunctionalized surface of GaAs (001). This result is an important milestone in our quest for the development of an all-optical biosensor for rapid detection and typing of viral pathogens. The device functions thanks to the strong photoluminescence emission generated by III-V quantum semiconductors (QS). One of...

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  • Observation of surface enhanced IR absorption coefficient in alkanethiol based self-assembled monolayers on GaAs (001)

    Alkanethiol self-assembled monolayers (SAMs) of various methylene group chain lengths [HS–(CH2)n–CH3 (n=9,11,13,15,17) were fabricated on the GaAs(001) surface followed by characterization using Fourier transform infrared spectroscopy [G. Marshall et al., J. Appl. Phys. 105, 094310 (2009)]. Modal analysis of the CH2 stretching mode region (2800–3000 cm-1) showed that linear scaling of the n-dependent factors accurately reproduced the spectral data, supporting a chain-length consistent physical model upon which a measurement of the absorption coefficient…

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  • Surface plasmon effects induced by uncollimated emission of semiconductor microstructures

    We have proposed [D. Lepage and J.J. Dubowski, Opt. Express 17(12), 10411 (2009)] an innovative microstructure for a monolithically integrated surface plasmon resonance (SPR) device comprising a metal coated SiO2 layer deposited atop a photoluminescence emitting quantum well (QW) wafer. The functioning of such a device is based on the uncollimated and incoherent emission of semiconductors. We discuss the results of our calculations aimed at the description of SPs coupling in QW semiconductor-based SPR architectures…

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  • Dominic Lepage receives the Vanier Scholarship

    The Honourable Gary Goodyear, Minister of State for Science and Technology, announced on April 30, 2009 in Ottawa the selection of the inaugural 55 recipients of the new Vanier Canada Graduate Scholarships-the most important, prestigious and sought-after scholarships for doctoral students. The Vanier Canada Graduate Scholarship Program supports world-class doctoral students who demonstrate a high standard of scholarly achievement in graduate studies in social sciences and humanities, science and…

Youtube Videos

Click here to watch our current collection of YouTube videos.

AFM image of E. coli on the antibody functionalized surface of a QS biosensor

For more details, see V. Duplan et al. 2011.

Influenza A virus immobilized specifically on the GaAs (001) surface

For more details, see V. Duplan et al.

Surface Plasmon Resonance (SPR) and H1N1 Pandemic Influenza

For more details, see the complete article

Alkanethiol adsorption process on GaAs Click on the image to see a physisorption to chemisorption transition

For more details, see O. Voznyy project

Electric field landscape in the vicinity of a dielectric and metal coated PL emitting Quantum Well microstructure

For more details, see D. Lepage project