- 27.02.18
J.J. Dubowski, S. Aithal, N. Liu, H. Sharma, “Photoluminescence monitored photocorrosion for metrology of GaAs/AlGaAs heterostructures at the nanoscale” [Digital etching of GaAs: a […]
- 15.11.17
W.M. Hassen, J.J. Dubowski, “Detecting Legionella pneumophila with Digitally Photocorroding Biosensor”, an oral presentation at the Biosensor Workshop on Detecting of Electrically Charged Biomolecules, […]
- 26.09.17
M.R. Aziziyan, J.J. Dubowski, “Quantum Semiconductor Photonic Biosensing Platform for Detection of Legionella Pneumophila in Industrial Water”, an oral presentation at the 4th Student […]
- 24.08.17
S. Aithal, J.J. Dubowski, “Open Circuit Potential Oscillations of Digitally Photocorroding GaAs/AlGaAs Nano-Heterostructures“, a poster presentation at the 18th Canadian Semiconductor Science and Technology Conference, […]
- 24.08.17
M.R. Aziziyan, W.M. Hassen, H. Sharma, E. S. Sani, N. Annabi, E.H. Frost, J.J. Dubowski, “Modification of zeta potential of bacteria for enhanced detection with […]
- 24.08.17
W.M. Hassen, S. Aithal, M.R. Aziziyan, L. Sirbu, Kh. Moumanis, E.H. Frost, J.J. Dubowski, ”Chemotaxis assisted GaAs/AlGaAs photocorrosion biosensor for detection of Legionella pneumophila”, […]
- 24.08.17
J. Chawich, A. Bartasyte, J.-C. Orlianges, C. Elie-Caille, T. Leblois, J.J. Dubowski, “ZnO-GaAs acoustic biosensors: focus on ZnO thin film characterization”, an oral presentation at […]
- 24.08.17
H. Sharma, Kh. Moumanis, J.J. Dubowski, “UV laser regeneration of GaAs/AlGaAs biochips for quasi continuous detection”, an oral presentation the 18th Canadian Semiconductor Science and […]
- 24.08.17
L. Sirbu, S. Aithal, M.R. Aziziyan, Kh. Moumanis, J.J. Dubowski, “Modeling of the photoluminescence monitored photocorrosion of GaAs/AlGaAs nano-heterostructures”, a poster presentation the 18th Canadian […]
- 29.07.17
J.J. Dubowski, “Digital etching of III-V semiconductors in aqueous solutions”, keynote presentation at the 10th International Conference on Emerging Materials and Nanotechnology, Vancouver, Canada, July […]
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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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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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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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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…
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
