Dubowski.ca
Laboratory for quantum semiconductors and
photon-based bionanotechnology
Monday, 19th of August 2019
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LPM 2014, June 18: Gediminas Raciukaitis and Jan Dubowski in the Trakai Island Castle near Vilnius, Lithuania
LPM 2014, June 18: Fire night show in the Trakai Island Castle near Vilnius, Lithuania
June 12, 20114, QS Group at a farewell lunch with Dr. Xiaohuan Huang
QS Group Ski Day at Orford, March 5, 2014; from the left: Elnaz Nazemi, Mohsen Rohani, Romain Béal, Nora and Ptisane Moumanis, Jan Dubowski, Khalid Moumanis

January 17, 2014, In the 3iT office (from the left) Jan Dubowski, Srivatsa Aithal, Xiaohuan Huang, Reza Aziziyan, Tom Dickinson
Neng Liu receives an award for the “Outstanding poster presentation” at the 12th International Conference on Laser Ablation (COLA), October 6-11, 2013, Ischia, Italy
QS Group at Orford. Taken on February 15, 2013
Taken on February 15, 2013 - Dominic Lepage helps Xiaohuan Huang to get on her feet.
Taken on February 15, 2013 – Dominic Lepage helps Xiaohuan Huang to get on her feet.

Taken on February 15, 2013 - A great day of skiing at Orford!
Taken on February 15, 2013 – A great day of skiing at Orford!
July 4, 2011: Visiting the Jiuzhaigou - Valley of Nine Villages (the name derived from the 9 ancient Tibetan villages that call it home).
July 4, 2011: Visiting the Jiuzhaigou – Valley of Nine Villages (the name derived from the 9 ancient Tibetan villages that call it home).
July 3, 2011: The Juizhaigou National Park, is a UNESCO World Heritage Site.]
July 3, 2011: The Juizhaigou National Park, is a UNESCO World Heritage Site.]
The 12th International Symposium on Laser Precision Microfabrication, June 7-10, 2011, Takamatsu, Japan: At the reception
The 12th International Symposium on Laser Precision Microfabrication, June 7-10, 2011, Takamatsu, Japan: At the reception

A ski trip to Nagano Yakebitaiyama, March 4, 2011.
A ski trip to Nagano Yakebitaiyama, March 4, 2011.
Taken at the Photonics West 2011, January 22-27. Dominic Lepage and Etienne Shaffer: old friends from Sherbrooke and Lausanne meeting in front of the Moscone Center, San Francisco.
Taken at the Photonics West 2011, January 22-27. Dominic Lepage and Etienne Shaffer: old friends from Sherbrooke and Lausanne meeting in front of the Moscone Center, San Francisco.
Taken on June 23, 2010 in Ottawa: Neng Liu playing drums to welcome Chinese president Hu Jintao visiting Canada
Taken on June 23, 2010 in Ottawa: Neng Liu playing drums to welcome Chinese president Hu Jintao visiting Canada
Alvaro Jimenez enjoys Ottawa Tulip Festival during the Summer School in Nanobiophotonics, Ottawa University, May 3rd-7th, 2010
Alvaro Jimenez enjoys Ottawa Tulip Festival during the Summer School in Nanobiophotonics, Ottawa University, May 3rd-7th, 2010

Taken on March 1, 2010, Breckenridge, Colorado: Professor taking advantage of the free time between research activities.
Taken on March 1, 2010, Breckenridge, Colorado: Professor taking advantage of the free time between research activities.
The 14th Canadian Semiconductor Technology Conference, Hamilton, Ontario, August 10-14, 2009
The 14th Canadian Semiconductor Technology Conference, Hamilton, Ontario, August 10-14, 2009
A break at the 14th Canadian Semiconductor Technology Conference, Hamilton, Ontario, August 10-14, 2009
A break at the 14th Canadian Semiconductor Technology Conference, Hamilton, Ontario, August 10-14, 2009
A break at the 14th Canadian Semiconductor Technology Conference, Hamilton, Ontario, August 10-14, 2009
A break at the 14th Canadian Semiconductor Technology Conference, Hamilton, Ontario, August 10-14, 2009

Taken in August 2008 in front of the Faculty of Engineering building
Taken in August 2008 in front of the Faculty of Engineering building
Taken on March 17th, 2008, on top of mount Bromont, a ski resort in Quebec. The group depicted is partial, as not everybody dared to brave freezing weather.
Taken on March 17th, 2008, on top of mount Bromont, a ski resort in Quebec.
The group depicted is partial, as not everybody dared to brave freezing weather.
Taken on September 15th, 2006. Background is a fresque painted on building in downtown Sherbrooke
Taken on September 15th, 2006.
Background is a fresque painted on building in downtown Sherbrooke
An evening of ethnic talents at the NATO Advanced Study Institute: September 19-29, 2005, Orford-Sherbrooke, Québec, Canada
An evening of ethnic talents at the NATO Advanced Study Institute: September 19-29, 2005, Orford-Sherbrooke, Québec, Canada

Taken in February 2005. From left: Khalid Moumanis, Radoslaw Stanowski, Richard Piechowski, Jan J. Dubowski, Jonathan Genest, Ximing Ding, Omar Musaev, Etienne Shaffer and ErikaBeaupré (Etienne's girlfriend).
Taken in February 2005. From left: Khalid Moumanis, Radoslaw Stanowski, Richard Piechowski, Jan J. Dubowski, Jonathan Genest, Ximing Ding, Omar Musaev, Etienne Shaffer and ErikaBeaupré (Etienne’s girlfriend).

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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