François Normandin
National Research Council
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Featured researches published by François Normandin.
Applied Physics Letters | 2006
Riad Nechache; Catalin Harnagea; Alain Pignolet; François Normandin; Teodor Veres; Louis-Philippe Carignan; David Ménard
The authors report the structural and physical properties of epitaxial Bi2FeCrO6 thin films on epitaxial SrRuO3 grown on (100)-oriented SrTiO3 substrates by pulsed laser ablation. The 300nm thick films exhibit both ferroelectricity and magnetism at room temperature with a maximum dielectric polarization of 2.8μC∕cm2 at Emax=82kV∕cm and a saturated magnetization of 20emu∕cm3 (corresponding to ∼0.26μB per rhombohedral unit cell), with coercive fields below 100Oe. The results confirm the predictions made using ab initio calculations about the existence of multiferroic properties in Bi2FeCrO6.
Advanced Materials | 2011
Paolo Falcaro; François Normandin; Masahide Takahashi; Paolo Scopece; Heinz Amenitsch; Stefano Costacurta; Cara M. Doherty; Jamie S. Laird; Matthew D. H. Lay; Fabio Lisi; Anita J. Hill; Dario Buso
Paolo alcaro , * F rancois F Normandin , Masahide akahashi , T Paolo Scopece , Heinz Amenitsch , Stefano Costacurta , Cara M. Doherty , Jamie S. Laird , Matthew D. H. Layabio , F Lisi , Anita J. Hill , and Dario Buso *
Journal of Physics D | 2008
Olivier Gautreau; Catalin Harnagea; Lina Gunawan; François Normandin; Teodor Veres; L. Pintilie; Marin Alexe; Alain Pignolet
Multiferroic properties of γ -Fe2O3–BiFeO3/Bi3.25La0.75Ti3O12 epitaxial composite bi-layers grown on SrRuO3/SrTiO3(1 1 1) are compared with the properties of single phase BiFeO3 and Bi3.25La0.75Ti3O12 thin films. The composite bi-layers show well-saturated hysteresis loops with a low coercive field, a high fatigue resistance and high saturation magnetization. The insulating Bi3.25La0.75Ti3O12 underlayer reduces significantly both the leakage current and the coercive field of the heterostructure (200 kV cm −1 ) at the expense of a lower polarization (20 µ Cc m −2 ), while the epitaxial γ -Fe2O3 secondary phase that develops within the relaxed epitaxial BiFeO3 matrix allowed for a high saturation magnetization. (Some figures in this article are in colour only in the electronic version)
Engineering in Life Sciences | 2011
Matthias Geissler; Julie A. Beauregard; Isabelle Charlebois; Sandra Isabel; François Normandin; Benoît Voisin; Maurice Boissinot; Michel G. Bergeron; Teodor Veres
This paper describes an experimentally simple and efficient way of integrating bead‐based mechanical cell lysis on a plastic chip. The chip is fabricated from machined slides of poly(methylmethacrylate) and accommodates a metal disk along with solid microbeads in a designated lysis chamber. Magnetic actuation of the metal disk induces collisions and frictional forces within the lysis matrix causing cell disruption. The efficiency of nucleic acid extraction was investigated using spores of Bacillus atrophaeus subsp. globigii and the amount of genomic DNA in the lysates has been quantified by real‐time PCR. Compared to a standardized DNA extraction method based on BD GeneOhm™ Lysis Kit, the yield was dependent on the composition of the lysis matrix, including size and relative amount of microbeads, along with instrumental parameters, such as duration and frequency of agitation. The interplay of these parameters should allow for optimizing lysis protocols to faithfully disrupt any particular type of cell without affecting the genetic material to be extracted.
international conference on micro electro mechanical systems | 2011
Daniel Brassard; Lidija Malic; Caroline Miville-Godin; François Normandin; Teodor Veres
This paper presents a low-cost technique for the fabrication of complex electrowetting-on-dielectric (EWOD) digital microfluidic devices. Using this original technology, we have developed devices in which 560 electrodes are used to mix and split nl-size liquid droplets and transport them to 100 analysis spots patterned on a disposable plastic top plate. We demonstrate the multiplexing capability of the developed devices by creating on-chip arrays of droplets with various concentration gradients. Finally, automated biomolecular immobilization and hybridization assays are performed in nl-size droplets under numerous conditions simultaneously with only a limited number of stock solutions.
MRS Proceedings | 2009
Kebin Li; Daniel Brassard; François Normandin; Caroline Miville-Godin; Matthias Geissler; Emmanuel Roy; Teodor Veres
Thermoplastic elastomer (TPE) based microfluidic devices integrated with a microfluidic pumping manifold which consists of 4 electromagnetic valves (EMV) were fabricated. The back and forth shuttling flow and its application in the DNA hybridization process were validated on a thermal plastic Zeonor 1060R substrate. The flow rate can be as fast as 23μl/min when the channel width and the channel height are in 100μm, and 25μm, respectively. The DNA hybridization process is detected by using a fluorescence microscopy. Remarkable DNA hybridization is achieved with the continuous flow of the target DNA at a concentration of 10 nM within the first 1 min by using this device.
Journal of Physical Chemistry B | 2006
Jin Zhang; Michael Post; Teodor Veres; Zygmunt J. Jakubek; Jingwen Guan; Dashan Wang; François Normandin; Yves Deslandes; Benoit Simard
Lab on a Chip | 2008
Daniel Brassard; Lidija Malic; François Normandin; Maryam Tabrizian; Teodor Veres
Journal of Physical Chemistry C | 2007
Dongling Ma; Teodor Veres; Liviu Clime; François Normandin; Jingwen Guan; and David Kingston; Benoit Simard
Journal of Physical Chemistry C | 2011
Xuefeng Zhang; Liviu Clime; Hélène Roberge; François Normandin; L'Hocine Yahia; E. Sacher; Teodor Veres