University of Waterloo
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
Phone: (519) 888-4567 ext 32215
Fax: (519) 746-8115
Stefan Idziak studies complex fluids using X-ray diffraction.
Office: PHY 250
Phone: 519 888-4567 ext. 35580
Confinement of complex fluid systems between two surfaces or in narrow pores is known to strongly alter the collective structure of the trapped molecules in fluids composed of molecular aggregates such as polymers, vesicles, biomembranes, or colloidal particles suspended in the liquid. The understanding of these new fluid properties is both of intrinsic and practical interest ranging from thin film lubrication to catalysis and separations. The X-Ray Surface Forces Apparatus (XSFA) is capable of imaging. Research projects include
This work is conducted using both in-house x-ray diffraction facilities as well as high resolution synchrotron diffraction techniques.
Mazzanti G, Guthrie SE, Sirota EB, et al.
Orientation and phase transitions of fat crystals under shear
CRYST GROWTH DES 3 (5): 721-725 SEP-OCT 2003
Welch SE, Stetzer MR, Hu G, et al.
Intermembrane spacing and velocity profiling of a lamellar lyotropic complex fluid under flow using x-ray diffraction
PHYS REV E 65 (6): Art. No. 061511 Part 1 JUN 2002
Idziak SHJ, Welch SE, Kisilak M, et al.
Undulating membrane structure under mixed extensional-shear flow
EUR PHYS J E 6 (2): 139-145 OCT 2001
Kisilak M, Anderson H, Babcock NS, et al.
An x-ray extensional flow cell
REV SCI INSTRUM 72 (11): 4305-4307 NOV 2001
Warriner HE, Keller SL, Idziak SHJ, et al.
The influence of polymer molecular weight in lamellar gels based on PEG-lipids
BIOPHYS J 75 (1): 272-293 JUL 1998
Professor Idziak is a co-holder of several patents in Canada, United States, Brazil and International
Marangoni, A.G., Idziak, S.H.J., Food Product, 2006. Canada and Brazil Patent Application.
Marangoni, A.G., Idziak, S.H.J., Food Product, 2005. U.S.A. and International Patent Application.
Marangoni, A.G., Idziak, S.H.J., 2005. Spreadable Food Product [US] Patent patent-number 20050249855, filed May 7, 2004 (issued, 2005).
Safinya, C.R., Warriner, H.E., Idziak, S.H.J., 2005. Lamellar Gels and Methods for Making and Regulating [US] Patent patent-number 6,899,895, filed January 4, 2001 (issued, 2005).
Safinya, C.R., Warriner, H.E., Idziak, S.H.J., 2005. Lamellar Gels and Methods for Making and Using [US] Patent patent-number 6,207,186, filed February 13, 1998 (issued, 2001).
The following news stories have featured Dr. Idziak's teaching:
1992 PhD Physics, University of Pennsylvania, Philadelphia, Pennsylvania, U.S.A.
1986 BSc Physics, McGill University, Montréal, Québec, Canada
The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land promised to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is centralized within our Indigenous Initiatives Office.