- Walid M. Hassen, Jonathan Vermette, Houman Moteshareie, Azam F. Tayabali, Jan J. Dubowski, “Semi-automated water sampling module for repeated sampling and concentration of Bacillus cereus group spores”, Scientific Reports (Nature), 13:831 (2023). [pdf]
- Houman Moteshareie, Walid M. Hassen, Yasmine Dirieh, Emma Groulx, Jan J. Dubowski, Azam F. Tayabali, “Rapid, Sensitive, and Selective Quantification of Bacillus cereus Spores Using xMAP Technology”, Microorganisms 10(7), 1408 (2022). [pdf]
- Juliana Chawich, Walid M. Hassen, Amanpreet Singh, Daniela T. Marquez, Maria C. DeRosa, Jan J. Dubowski, “Polymer Brushes on GaAs and GaAs/AlGaAs Nanoheterostructures: A Promising Platform for Attractive Detection of Legionella pneumophila“, ACS Omega 7, 33349-33357 (2022). [pdf]
- Lucas Paladines, Walid M. Hassen, Juliana Chawich, Stefan Dübel, Simon Lévesque, Jan J. Dubowski, Eric H. Frost, “Investigation of Conditions for Capture of Live Legionella pneumophila with Polyclonal and Recombinant Antibodies”, Biosensors 12, 380 (2022). [pdf]
- M. Amirul Islam, Walid M. Hassen, Ishika Ishika, Azam F. Tayabali, Jan J. Dubowski, “Selective detection of Legionella pneumophila serogroup 1 and 5 with a digital photocorrosion biosensor using antimicrobial peptide-antibody sandwich strategy”, Biosensors 12, 105 (2022). [pdf]
- Houman Moteshareie, Walid M. Hassen, Jonathan Vermette, Jan J. Dubowski, Azam F. Tayabali, “Strategies for Capturing Bacillus thuringiensis Spores on Surfaces of (001) GaAs-based Biosensors”, Talanta, 236, 122813 (2022). [pdf]
- René St-Onge, Jonathan Vermette, Walid M. Hassen, Jan J. Dubowski “Formation of increased density alkanethiol self-assembled monolayers on surfaces of digitally photocorroded (001) GaAs/AlGaAs nanoheterostructures”, Appl. Phys. Lett. 128, 222102 (2021), [pdf]
- Juliana Chawich, Walid M. Hassen, Céline Elie-Caille, Thérèse Leblois, Jan J. Dubowski “Regenerable ZnO/GaAs bulk acoustic wave biosensor for detection of Escherichia coli in “complex” biological medium”, Biosensors 11, 145 (2021). [pdf]
- Daniela T. Marquez, Juliana Chawich, Walid M. Hassen, Khalid Moumanis, Maria C. DeRosa, and Jan J. Dubowski, “Polymer Brush–GaAs Interface and Its Use as an Antibody-Compatible Platform for Biosensing”, ACS Omega 6, 7286-7295 (2021). [pdf]
- K. Moumanis, Li. Sirbu, W.M. Hassen, E. Frost, L. Rodrigues de Carvalho, P. Hiernaux and J.J. Dubowski, “Water Sampling Module for Collecting and Concentrating Legionella pneumophila from Low-to-Medium Contaminated Environment”, Biosensors 11(2), 34 (2021). [pdf]
- M. Amirul Islam, Walid M. Hassen, Azam F. Tayabali, Jan J. Dubowski, “Short Ligand, Cysteine-Modified Warnericin RK Antimicrobial Peptides Favor Highly Sensitive Detection of Legionella pneumophila”, ACS Omega 6, 1299-1308 (2021). [pdf]
- Amanpreet Singh, René St-Onge, Jan J. Dubowski, “Consequence of Galvanic Displacement Reaction on Digital Photocorrosion of GaAs/Al0.35Ga0.65As of Nanoheterostructures”, J. Chem. Phys. C 124, 27772-27779 (2020). [pdf]
- Hakim Grib, Khalid Moumanis, Walid Mohamed Hassen and Jan J. Dubowski, “Selective Area Nd:YAG Laser Functionalization of Digital Photocorrosion GaAs/AlGaAs Biosensor”, Laser Micro/Nanoengineering 15(2), 1-8 (2020). [pdf]
- J. Chawich, S. Kuprenaite, S. Margueron, P. Boulet, J.J. Dubowski, C. Elie-Caille, T. Leblois, “Deposition and characterization of ZnO thin films on GaAs and Pt/ GaAs substrates”, Mater. Chem. Phys. 247, 122854 (2020). [pdf]
- M. Amirul Islam, Walid M. Hassen, Azam F. Tayabali, Jan J. Dubowski, “Antimicrobial warnericin RK peptide functionalized GaAs/AlGaAs biosensor for highly sensitive and selective detection of Legionella pneumophila”, Biochem. Eng. Journal 154, 107435 (2020). [pdf]
- Amanpreet Singh, Deepak Bains, Walid M. Hassen, Narinder Singh, Jan J. Dubowski, ”Formation of Au/Au9Ga4 Alloy Nanoshell on Bacterial Surface through Galvanic Displacement Reaction for High-Contrast Imaging”, ACS Appl. Bio Mater, 3, 477-495 (2020). [pdf]
- Mohammad R. Aziziyan, Walid M. Hassen, Hemant Sharma, Ehsan S. Sani, Nasim Annabi, Eric H. Frost, Jan J. Dubowski, “Sodium Dodecyl Sulfate Decorated Legionella pneumophila for Enhanced Detection with a GaAs/AlGaAs Nanoheterostructure Biosensor”, Sensors and Actuators B: Chemical 304, 127007 (2020). [pdf]
- Amanpreet Singh, Pushap Raj, Ajnesh Singh, Jan J. Dubowski, Navneet Kaur, Narinder Singh, “Metal – Organocatalyst for Detoxification of Phosphorothioate Pesticides: Demonstration of Acetylcholine Esterase Activity”, Inorganic Chemistry 58, 9773-9784 (2019). [pdf]
- M.R. Aziziyan, H. Sharma, J.J. Dubowski, “Photo-Atomic Layer Etching of GaAs/AlGaAs Nanoheterostructures”, ACS Appl. Mater. Interfaces 11, 17968-17978 (2019). [pdf]
- H. Sharma, J. Singh, W.M. Hassen, N. Singh, J.J. Dubowski, “1,8-Naphthalimide based DNA intercalator for direct imaging of Legionella pneumophila”, ACS Omega 4, 5829-5838 (2019). [pdf]
- S. Choiniere, E.H. Frost, J.J. Dubowski, “Binding strategies for capturing and growing Escherichia coli on surfaces of biosensing devices”, Talanta 192, 270-277 (2019). [pdf]
- A. Singh, P. Raj, J.J. Dubowski, N. Singh, “ATP Induced Modulation in π−π Stacking Interactions in Pyrene Based Zinc Complexes: Chemosensor Study and Quantitative Investigation of Apyrase Activity”, Cryst. Growth Des. 18 (8), 4320-4333 (2018). [pdf]
- S. Aithal, J.J. Dubowski, “Open Circuit Potential Monitored Digital Photocorrosion of GaAs/AlGaAs Quantum Well Microstructures”, Appl. Phys. Lett. 112, 153102 (2018). [pdf]
- J.J. Dubowski, R. Stanowski, D. Dalacu, P.J. Poole, ”Precision tuning of InAs quantum dot emission wavelength by iterative laser annealing”, Optics & Laser Technol. 103, 382-386 (2018). [pdf]
- E. Nazemi, W.M. Hassen, E.H. Frost, J.J. Dubowski, “Growth of Escherichia coli on the GaAs (001) surface”, Talanta 178, 69-77 (2018). [pdf]
- V. Lacour, K. Moumanis, W.M. Hassen, C. Elie-Caille, T. Leblois, J.J. Dubowski, “Formation kinetics of mixed self-assembled monolayers of alkanethiols on GaAs (100)”, Langmuir 35, 4415-4427 (2019).
- E. Nazemi, W.M. Hassen, E.H. Frost, J.J. Dubowski, “Monitoring growth and antibiotic susceptibility of Escherichia coli with photoluminescence emitting semiconductor biochips”, Procedia Technology 27, 244 – 245 (2017). [pdf]
- S. Aithal, N. Liu, J.J. Dubowski, “Photocorrosion metrology of photoluminescence emitting GaAs/AlGaAs heterostructures”, J. Phys. D: Appl. Phys. 50, 035106 (2017). [pdf]
- E. Nazemi, W.M. Hassen, E.H. Frost, J.J. Dubowski, “Monitoring growth and antibiotic susceptibility of Escherichia coli with photoluminescence of GaAs/AlGaAs heterostructures”, Biosens. Bioelectron., 93, 234-240 (2017). [pdf]
- H. Sharma, K. Moumanis, J.J. Dubowski, “pH-Dependent Photocorrosion of GaAs/AlGaAs Quantum Well Microstructures”, J. Phys. Chem. C 120, 26129−26137 (2016). [pdf]
- N. Liu, J. Vincent, Kh. Moumanis, J.J. Dubowski, “Processing of back surfaces of Si wafers with a pulsed Nd:YAG laser”, Journal Laser Micro/Nano-engineering 11(2), 232-238 (2016). [pdf]
- W.M. Hassen, H. Sanyal, M. Hammood, Kh. Moumanis, E.H. Frost, J.J. Dubowski, “Chemotaxis for enhanced immobilization of Escherichia coli and Legionella pneumophila on biofunctionalized surfaces of GaAs”, Biointerphases 11(2), 021004 (2016). [pdf]
- V. Lacour, C. Elie-Caille, T. Leblois, Kh. Moumanis, J.J. Dubowski, “Regeneration of a thiolated and antibody functionalized GaAs (001) surface using wet chemical processes”, Biointerphases 11(1), 019302 (2016). [pdf]
- M.R. Aziziyan, W.M. Hassen, D. Morris, E.H. Frost, J.J. Dubowski, “Photocorrosion based GaAs/AlGaAs biosensor for detection of Legionella pneumophila, Biointerphases 11(1), 019301 (2016). [pdf]
- R. Béal, Kh. Moumanis, V. Aimez, J.J. Dubowski, “UV laser quantum well intermixing based prototyping of bandgap tuned heterostructures for the fabrication of superluminescent diodes”, Optics & Laser Technol. 78, 5-9 (2016). [pdf]
- V. Lacour, E. Herth, F. Lardet-Vieudrin, J.J Dubowski, T. Leblois, “GaAs based bulk acoustic wave sensor for biological molecules detection”, Proc. Eng. 120, 721-726 (2015). [pdf]
- X. Zhang, J-J He, N. Liu, J.J. Dubowski, “Carrier-induced fast wavelength switching in tunable V-cavity laser with quantum well intermixed tuning section”, Opt. Express 23(20),26336-26341 (2015). [pdf]
- N. Liu, Kh. Moumanis, J.J. Dubowski, “Selective area modification of silicon surface wettability by pulsed UV laser irradiation in liquid environment”, J. Vis. Exp. 105, e52720, doi:10.3791/52720 (2015). [pdf]
- A. Jimenez, D. Lepage, J. Beauvais, J.J. Dubowski, “Integrated electrically driven surface plasmon resonance device for biosensing applications”, Opt. Express 23(15), 19763-19770 (2015). [pdf]
- N. Liu, Kh. Moumanis, D. Carrier, M. Bilodeau, V. Pomerleau, B. Foisy, J.J. Dubowski, “High-contrast laser marking of microelectronic packaging modules”, J. Laser Micro/Nano-engineering 10(2), 175-180 (2015). [pdf]
- R. Beal, V. Aimez, J.J. Dubowski, “Excimer laser induced quantum well intermixing: a reproducibility study of the process for fabrication of photonic integrated devices”, Opt. Express 23(2), 1073-1080 (2015). [pdf]
- E. Nazemi, S. Aithal, W.M. Hassen, E.H. Frost, J.J. Dubowski, “GaAs/AlGaAs heterostructure photonic biosensor for rapid detection of Escherichia coli in phosphate buffered saline solution”, Sensors and Actuators B207, 556-562 (2015). [pdf]
- Neng Liu, Xiaohuan Huang, Jan J. Dubowski, “Selective area in situ conversion of Si (001) hydrophobic to hydrophilic surface by excimer laser irradiation in hydrogen peroxide“, J. Phys. D: Appl. Phys. 47, 385106 (2014). [pdf]
- N. Liu, W.M. Hassen, J.J. Dubowski, “Excimer laser assisted chemical process for formation of hydrophobic surface of Si (001)”, Appl. Phys. A117, 37-41 (2014). [pdf]
- X. Huang, J.J. Dubowski, “Solvent-mediated self-assembly of hexadecanethiol on GaAs (001)”, Appl. Surf. Sci.,299, 66-72 (2014). [pdf]
- N. Liu, S. Poulin, J.J. Dubowski, “Enhanced photoluminescence emission from bandgap shifted InGaAs/InGaAsP/InP microstructures fabricated by the UV laser quantum well intermixing technique”, J. Phys. D.: Appl. Phys. 46, 445103 (2013). [pdf]
- R. Béal, Kh. Moumanis, V. Aimez, J.J. Dubowski, “Enhanced Spectrum Superluminescent Diodes Fabricated by Infrared Laser Rapid Thermal Annealing”, Optics & Laser Technol. 54, 401–406 (2013). [pdf]
- X. Huang, N. Liu, Kh. Moumanis and J.J. Dubowski, “Water-mediated self-assembly of 16-mercaptohexadecanoic acid on GaAs (001)”, J. Phys. Chem. C117, 15090-15097 (2013). [pdf]
- J.D. Caldwell, A. Giles, D. Lepage, D. Carrier, Kh. Moumanis, B.A. Hull, R.E. Stahlbush, R. Myers-Ward, J.J. Dubowski and M. Verhaegen, “Experimental Evidence for Mobile Luminescence Center Concentration on Partial Dislocations in 4H-SiC using Hyperspectral Electroluminescence Imaging”, Appl. Phys. Lett.102, 242109 (2013). [pdf]
- D. Lepage, J.J. Dubowski, “Miniaturized quantum semiconductor surface plasmon resonance platform for detection of small molecules”, Biosensors 3, 201-210 (2013). [pdf]
- M. Kaleem, X. Zhang, Y. Zhuang, Jian-Jun He, N. Liu and J.J. Dubowski, “UV laser induced selective-area bandgap engineering for fabrication of InGaAsP/InP laser devices“, Optics & Laser Technol. 51, 36-42 (2013). [pdf]
- D. Lepage, A. Jiménez, J. Beauvais and J.J. Dubowski, “Real-time detection of influenza A virus using s emiconductor nanophotonics“, Light: Science and Applications 2, e62; doi:10.1038/lsa.2013.18; (2013). [pdf]
- Neng Liu, Jan J. Dubowski, “Chemical evolution of InP/InGaAs/InGaAsP microstructures irradiated in air and deionized water with ArF and KrF lasers“, Appl. Surf. Sci. 270, 16-24 (2013). [pdf]
- D. Lepage, A. Jiménez, J. Beauvais and J.J. Dubowski, “Conic hyperspectral dispersion mapping applied to semiconductor plasmonics“, Light: Science and Applications 1, e28; doi:10.1038/lsa.2012.28; (2012). [pdf]
- Neng Liu, Khalid Moumanis, Jan J. Dubowski, “Self-organized Nano-cone Arrays in InP/InGaAs/InGaAsP Microstructures by Irradiation with ArF and KrF Excimer Lasers“, J. Laser Micro/Nanoengineering, 7(2), 130-136 (2012). [pdf]
- A. Jimenez, D. Lepage, J. Beauvais and J.J. Dubowski, “Study of surface morphology and refractive index of dielectric and metallic films used for the fabrication of monolithically integrated surface plasmon resonance biosensing devices“, Microelectronic Engineering 93, 91-94 (2012). [pdf]
- Palani Arudra, Gregory M. Marshall, Neng Liu, and Jan J. Dubowski, “Enhanced Photonic Stability of GaAs in Aqueous Electrolyte Using Alkanethiol Self-Assembled Monolayers and Post processing with Ammonium Sulfide”, J. Phys. Chem. C116, 2891-2895(2012). [pdf]
- Valérie Duplan, Eric Frost, Jan J. Dubowski, “A photoluminescence-based quantum semiconductor biosensor for rapid in situ detection of Escherichia coli“, Sensors and Actuators B 160(1), 46-51 (2011). [pdf][7&8&9&10]
- W.M. Hassen, V. Duplan, E. Frost and J.J. Dubowski, “Quantitation of influenza A virus in the presence of extraneous protein using electrochemical impedance spectroscopy”, Electrochimica Acta 56(24), 8325-8328 (2011). [pdf]
- D. Lepage, D. Carrier, A. Jimenez, J. Beauvais and J.J. Dubowski, “Plasmonic propagations distances for interferometric surface plasmon resonance biosensing“, Nanoscale Res. Lett. 6, 388 (2011).[pdf]
- G.M. Marshall,G.P. Lopinski, F. Bensebaa and J.J Dubowski, “Electro-optic investigation of the surface trapping efficiency in n-alkanethiol SAM passivated GaAs(001)”, Nanotechnology 22, 235704 (2011).[pdf]
- G.M. Marshall, F. Bensebaa, and J.J. Dubowski, “Surface barrier analysis of semi insulating and n+-type GaAs(001) following passivation with n-alkanethiol SAMs“, Appl. Surf. Sci. 257(9), 4543-4546 (2011).[pdf]
- D. Lepage, A. Jimenez, D. Carrier, J. Beauvais and J.J. Dubowski, “Hyperspectral imaging of diffracted surface plasmons”, Opt. Express 18(26), 27327–27335 (2010).[pdf]
- A. Palani, Y. Nguiffo-Podie, E. Frost and J.J. Dubowski, “Decomposition of Thimerosal and Dynamics of Thiosalicylic Acid Attachment on GaAs(001) Surface Observed with in Situ Photoluminescence”, J. Phys. Chem. C114(32), 13657–13662 (2010).[pdf,supp.]
- J.J. Dubowski, O. Voznyy and G.M. Marshall, “Molecular self-assembly and passivation of GaAs (001) with alkanethiol monolayers: a view towards bio-functionalization”, Appl. Surf. Sci. 256(19), 5714-5721 (2010).[pdf]
- R. Stanowski, M. Martin, R. Ares and J.J. Dubowski, “Iterative bandgap engineering at selected areas of quantum semiconductor wafers”, Opt. Express 17(22), 19842-19847 (2009). [pdf]
- G.M. Marshall, G.P. Lopinski, F. Bensebaa, and J.J. Dubowski, “Surface dipole layer potential induced IR absorption enhancementin n-alkanethiol SAMs on GaAs (001)”, Langmuir, 25(23), 13561-13568, (2009). [pdf,supp.]
- C.K. Kim, G.M. Marshall, M. Martin, M. Bisson-Viens, Z. Wasilewski,and J.J. Dubowski, “Formation dynamics of hexadecanethiol self-assembled monolayers on (001) GaAs observed with photoluminescence and Fourier transform infrared spectroscopies”, J. Appl. Phys. 106, 083518 (2009). [pdf]
- D. Lepage and J.J. Dubowski, “Surface plasmon effects induced by uncollimated emission of semiconductor microstructures”, Opt. Express 17(12), 10411-10418 (2009). [pdf][6]
- V. Duplan, Y. Miron, E. Frost, M. Grandbois, J.J. Dubowski, “Specific immobilization of influenza A virus on GaAs (001) surface”, J. Biomed. Optics 14(5), 054042 (2009). [pdf][4&5]
- O. Voznyy, J.J. Dubowski, J.T. Yates Jr. and P. Maksymovych, “The Role of Gold Adatoms and Stereochemistry in Self-Assembly of Methylthiolate on Au(111)”, J. Am. Chem. Soc. 131, 12989–12993 (2009). [pdf]
- O. Voznyy and J.J. Dubowski, “c(4 × 2) structures of alkanethiol monolayers on Au (111) compatible with the constraint of dense packing”, Langmuir, 25(13), 7353-7358 (2009). [pdf]
- G.M. Marshall, F. Bensebaa and J.J. Dubowski, “Observation of surface enhanced IR absorption coefficient in alkanethiol based self-assembled monolayers on GaAs(001)”, J. Appl. Phys. 105, 094310 (2009). [pdf][3]
- R. Stanowski and J.J. Dubowski, “Laser rapid thermal annealing of quantum semiconductors: a one step bandgap engineering technique”, Appl. Phys. A94, 667-674 (2009). [pdf]
- J. Genest, R. Béal, V. Aimez and J.J. Dubowski, “ArF laser-based quantum well intermixing in InGaAs/InGaAsP heterostructures”, Appl. Phys. Lett. 93, 071106 (2008). [pdf]
- O. Voznyy and J.J. Dubowski, “Structure of thiol self-assembled monolayers commensurate with the GaAs (001) surface”, Langmuir 24, 13299-13305 (2008). [pdf, supp.]
- E. Shaffer, A.S. Helmy, D. Drouin and J.J. Dubowski, “Excimer Laser-Induced Crystallization of CdSe Thin Films”, Appl. Phys. A93, 869-874 (2008). [pdf]
- O. Voznyy and J.J. Dubowski, “Adsorption Kinetics of Hydrogen Sulfide and Thiols on GaAs (001) Surfaces in a Vacuum”, J. Phys. Chem. C112, 3726-3733 (2008). [pdf]
- D. Lepage and J.J. Dubowski, “Surface plasmon assisted photoluminescence in GaAs-AlGaAs quantum well microstructures”, Appl. Phys. Lett. 91, 163106/1-163106/3 (2007). [pdf]
- G. Genest, J.J. Dubowski and V. Aimez, “Suppressed intermixing in InAlGaAs/AlGaAs/GaAs and AlGaAs/GaAs quantum well heterostructures irradiated with a KrF excimer laser”, Appl. Phys. A89, 423-426 (2007). [pdf]
- O. Voznyy and J.J. Dubowski, “Structure, bonding nature and binding energy of alkanethiolate on As-rich GaAs (001) surface: a density functional theory study”, J. Phys. Chem. B110(47), 23619-23622 (2006). [pdf]
- D. Wieliczka, X. Ding and J.J. Dubowski, “X-ray photoelectron spectroscopy study of self-assembled monolayers of alkanethiols on (001) GaAs”, J. Vac. Sci. Technol. A24(5), 1756-1759 (2006). [pdf]
- Kh. Moumanis, X. Ding, J.J. Dubowski and E. Frost, “Aging and detergent washing effects of the surface of (001) and (110) GaAs passivated with hexadecanethiol”, J. Appl. Phys. 100, 034702 (2006). [pdf][2]
- X. Ding, Kh. Moumanis, J.J. Dubowski, E. Frost and E. Escher, “Immobilization of avidin on (001) GaAs”, Appl. Phys. A83, 357-360 (2006). [pdf]
- X. Ding, Kh. Moumanis, J.J. Dubowski, L. Tay and N.L. Rowell, “FTIR and photoluminescence spectroscopy of self-assembled monolayers of long-chain thiols on (001) GaAs”, J. Appl. Phys. 99, 54701-54706 (2006). [pdf][1]
- O. Voznyy, R. Stanowski and J.J. Dubowski, “Multibandgap quantum well wafers by IR laser quantum well intermixing: simulation of the lateral resolution of the process”, J. Laser Micro/Nanoengineering, 1(1), 48-53 (2006). [pdf]
- R. Stanowski, O. Voznyy and J.J. Dubowski, “Finite element model calculations of temperature profiles in Nd:YAG laser annealed GaAs/AlGaAs quantum well microstructures”, J. Laser Micro/Nanoengineering, 1(1), 17-22 (2006). [pdf]
- X. Du, J.J. Dubowski, M. Post, D.Wang and J. Tunney, “Excimer laser annealing of p-type perovskite thin films”, J. Vac. Sci. Techn. A22(3), 870-873 (2004). [pdf]
- J.J. Dubowski, C.Y. Song, J. Lefebvre, Z. Wasilewski, G. Ares and H.C. Liu, “Laser-induced selective area tuning of GaAs/AlGaAs quantum well microstructures for two color IR detector operation”, J. Vac. Sci. Tech. A22(3), 887-890 (2004). [pdf]
- [10]Highlighted in Université de Sherbrooke – February 28, 2012
- [9]Highlighted in Techno-Science Net – March 1, 2012
- [8]Highlighted in La Tribune – March 3, 2012
- [7]Highlighted in Sherbrooke Innopole – March 7, 2012
- [6]Highlighted in Virtual Journal for Biomedical Optics – July 30, 2009
- [5]Highlighted in Virtual Journal of Nanoscale Science & Technology – November 9, 2009
- [4]Highlighted in Virtual Journal of Biological Physics Research – November 1, 2009
- [3]Highlighted in Virtual Journal of Nanoscale Science & Technology – May 18, 2009
- [2]Highlighted in Virtual Journal of Nanoscale Science & Technology – August 21, 2006
- [1]Highlighted in Virtual Journal of Nanoscale Science & Technology – March 20, 2006