Josef W. Zwanziger

Professor

Canada Research Chair, Tier I: NMR Studies of materials

Email: jzwanzig@dal.ca

View Josef W. Zwanziger's Publications Sorted by Date

Recent Submissions

  • Thermal, vibrational, and thermoelastic properties of Y2Mo3O12 and their relations to negative thermal expansion 

    Phys. Rev. B 90, 024305
    Y2 Mo3O12, a material that exhibits negative thermal expansion (NTE) from 10 to 1173 K, offers an excellent opportunity to examine relationships between NTE and other physical properties over a wide temperature range. We ...
  • The heat capacities of thermomiotic ScF3 and ScF3–YF3 solid solutions 

    Journal of Materials Science May 2015, Volume 50, Issue 9, pp 3409-3415
    Scandium trifluoride (ScF3) exists in a cubic ReO3 structure that exhibits negative thermal expansion from 10 to 1100 K, while substituted Sc1−x Y x F3 materials display the same behavior at room temperature but transition ...
  • Zero Thermal Expansion in ZrMgMo3O12: NMR Crystallography Reveals Origins of Thermoelastic Properties 

    Chem. Mater., 2015, 27 (7), pp 2633–2646 DOI: 10.1021/acs.chemmater.5b00429
    The coefficient of thermal expansion of ZrMgMo3O12 has been measured and was found to be extremely close to zero over a wide temperature range including room temperature ( = (1.6 ± 0.2) × 10–7 K–1 from 25 to 450 °C by X-ray ...
  • Temperature dependent lattice misfit and coherency of Al3X (X = Sc, Zr, Ti and Nb) particles in an Al matrix 

    Saumitra Saha, T.Z. Todorova, J.W. Zwanziger, Temperature dependent lattice misfit and coherency of Al3X (X = Sc, Zr, Ti and Nb) particles in an Al matrix, Acta Materialia, Volume 89, 1 May 2015, Pages 109-115, ISSN 1359-6454, http://dx.doi.org/10.1016/j.actamat.2015.02.004
    The lattice coherency and critical radii for Al3X precipitates in an aluminum matrix were computed using first-principles methods. From density functional perturbation theory and the quasi-harmonic approximation, the unit ...
  • Topological constraints and the Makishima–Mackenzie model 

    M. Plucinski, J.W. Zwanziger, Topological constraints and the Makishima–Mackenzie model, Journal of Non-Crystalline Solids, Volume 429, 1 December 2015, Pages 20-23, ISSN 0022-3093, http://dx.doi.org/10.1016/j.jnoncrysol.2015.08.029
    Computations of the elastic properties of networks with bond stretch and bond angle bend forces are carried out in order to study their behavior as a function of average coordination number. It is found that the elastic ...
  • Relating 139La Quadrupolar Coupling Constants to Polyhedral Distortion in Crystalline Structures 

    Relating 139La Quadrupolar Coupling Constants to Polyhedral Distortion in Crystalline Structures Alexander L. Paterson, Margaret A. Hanson, Ulrike Werner-Zwanziger, and Josef W. Zwanziger The Journal of Physical Chemistry C 2015 119 (45), 25508-25517 DOI: 10.1021/acs.jpcc.5b09122
    A broad series of crystalline lanthanum oxide-based materials has been investigated through high-field 139La solid state nuclear magnetic resonance (ssNMR) spectroscopy and ab initio density functional theory (DFT) ...
  • Designing glass with non-dispersive stress-optic response 

    J. Galbraith, J.W. Zwanziger, Designing glass with non-dispersive stress-optic response, Journal of Non-Crystalline Solids, Volume 433, 1 February 2016, Pages 82-86, ISSN 0022-3093, http://dx.doi.org/10.1016/j.jnoncrysol.2015.11.027
    The dispersion of the stress-optic response of a series of barium and lead phosphate glasses is measured using an ellipsometric method. It is found that the barium glasses display consistently positive dispersion with ...
  • Nanoindentation Study of the Surface of Ion-Exchanged Lithium Silicate Glass 

    Nanoindentation Study of the Surface of Ion-Exchanged Lithium Silicate Glass Courtney Calahoo, Xiaofang Zhang, and J. W. Zwanziger The Journal of Physical Chemistry C 2016 120 (10), 5585-5598 DOI: 10.1021/acs.jpcc.6b00733
    Variations in mechanical properties (stiffness and hardness) were measured as a function of case depth in ion-exchange glasses using nanoindentation. A simple silicate composition, 30Li2O–70Si2O, was exchanged (Li+ ↔ K+) ...
  • Mechanical–Structural Investigation of Ion-Exchanged Lithium Silicate Glass using Micro-Raman Spectroscopy 

    Mechanical–Structural Investigation of Ion-Exchanged Lithium Silicate Glass using Micro-Raman Spectroscopy Courtney Calahoo, J. W. Zwanziger, and Ian S. Butler The Journal of Physical Chemistry C 2016 120 (13), 7213-7232 DOI: 10.1021/acs.jpcc.6b01720
    Micro-Raman spectroscopy was used to determine the structural modifications occurring in a simple ion-exchanged glass. The base lithium silicate composition 30Li2O–70SiO2 was studied as it underwent ion exchange, Li+ ↔ K+, ...
  • Controlling Growth of Ultrasmall Sub-10 nm Fluorescent Mesoporous Silica Nanoparticles. 

    Ma, Kai, Ulrike Werner-Zwanziger, Josef Zwanziger, and Ulrich Wiesner. 2013. "Controlling Growth of Ultrasmall Sub-10 nm Fluorescent Mesoporous Silica Nanoparticles.." Chemistry of Materials 25(5): 677-691.
    Mesoporous silica nanoparticles (MSNs) have recently attracted a lot of interest for future nanotheranostic applications because of their large surface-area and high biocompatibility. However, studies to date of MSNs are ...
  • Investigating self-assembly and metal nanoclusters in aqueous di-block copolymers solutions. 

    Lo Celso, F., A. Triolo, L. Bronstein, J. Zwanziger, et al. 2002. "Investigating self-assembly and metal nanoclusters in aqueous di-block copolymers solutions.." Applied Physics A: Materials Science & Processing 74(Suppl., Pt. 1): 540-S542.
    Self-assembling properties of di-block copolymers/surfactant hybrids in aq. soln. can be exploited to obtain metal nanoparticles stable dispersion. Results will be presented here for polystyrene-block-poly(ethylene oxide) ...
  • Solid-state NMR line narrowing methods for quadrupolar nuclei: double rotation and dynamic-angle spinning. 

    Chmelka, B. F., and J. W. Zwanziger. 1994. "Solid-state NMR line narrowing methods for quadrupolar nuclei: double rotation and dynamic-angle spinning.." NMR 33(Solid-State NMR IV: Methods and Applications of Solid-State NMR): 79-124.
    A review with 100 refs. Recent theor. advances coupled with innovative engineering led to rapid progress in the development of new methods for obtaining high-resoln. NMR spectra of quadrupolar nuclei in solids. This paper ...
  • Multiresonant spectroscopy and dynamics of molecular Rydberg States. 

    Haber, K. S., F. X. Campos, J. W. Zwanziger, R. T. Wiedmann, et al. 1988. "Multiresonant spectroscopy and dynamics of molecular Rydberg States.." Cambridge Studies in Modern Optics 8(Multiphoton Processes): 126-136.
    Nonradiative intramol. dynamics in high-lying Rydberg neutral and autoionizing channels of NO2 were characterized by optical-UV double resonant and multiresonant Rydberg-Rydberg absorption spectroscopy, as well as by ...
  • Erratum to "The ring structure of boron trioxide glass" [J. Non-Cryst. Solids 261 (2000) 282-286]. 

    Joo, C., U. Werner-Zwanziger, and J. W. Zwanziger. 2000. "Erratum to "The ring structure of boron trioxide glass" [J. Non-Cryst. Solids 261 (2000) 282-286].." Journal of Non-Crystalline Solids 271(3): 265-266.
    No abstract available.
  • Topological invariants in Fermi systems with time-reversal invariance. 

    Zwanziger, J. W., and Alexander Pines. 1989. "Topological invariants in Fermi systems with time-reversal invariance.." Chemtracts: Analytical and Physical Chemistry 1(6): 339-341.
    The title research of J. E. Avron et al. (1988) is reviewed with commentary and 8 refs. [on SciFinder(R)]
  • Controlled Synthesis of Novel Metalated Poly(aminohexyl)-(aminopropyl)silsesquioxane Colloids. 

    Bronstein, Lyudmila M., Christina N. Linton, Robert Karlinsey, Earl Ashcraft, et al. 2003. "Controlled Synthesis of Novel Metalated Poly(aminohexyl)-(aminopropyl)silsesquioxane Colloids.." Langmuir 19(17): 7071-7083.
    A new family of polysilsesquioxanes colloids was synthesized by hydrolytic condensation of a functionalized precursor N-(6-aminohexyl)aminopropyltrimethoxysilane (AHAPS), H2N(CH2)6NHCH2CH2CH2Si(OCH3)3, and studied using ...
  • Functional Polymer Colloids with Ordered Interior. 

    Bronstein, Lyudmila M., Christina Linton, Robert Karlinsey, Barry Stein, et al. 2004. "Functional Polymer Colloids with Ordered Interior.." Langmuir 20(4): 1100-1110.
    Polymer colloids with internal ordering were synthesized using hydrolytic condensation of octadecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride (ODMACl) and a mixt. of ODMACl and the trisodium salt of the triacetic ...
  • Dependence of conductivity on the interplay of structure and polymer dynamics in a composite polymer electrolyte 

    Karlinsey, RL, LM Bronstein, and JW Zwanziger. 2004. "Dependence of conductivity on the interplay of structure and polymer dynamics in a composite polymer electrolyte." Journal of Physical Chemistry B 108(3): 918-928.
    The conductivity and transport properties of a composite polymer electrolyte were studied by comparing the structure and dynamics as a function of both salt and organic-inorganic composite content. The system consisted of ...
  • Preferential binding of fluorine to aluminum in high peralkaline aluminosilicate glasses 

    Karpukhina, N. G., U. Werner-Zwanziger, J. W. Zwanziger, and A. A. Kiprianov. 2007. "Preferential binding of fluorine to aluminum in high peralkaline aluminosilicate glasses." Journal of Physical Chemistry B 111(35): 10413-20.
    For two series of fluoride-containing aluminosilicate glasses of high peralkaline type, we apply 27Al, 19F, 29Si, and 23Na NMR spectroscopy to understand the structural changes introduced by the addition of alkali fluorides. ...
  • Composition and morphology control in ordered mesostructured high-temperature ceramics from block copolymer mesophases 

    Kamperman, Marleen, Phong Du, Raluca O. Scarlat, Erik Herz, et al. 2007. "Composition and morphology control in ordered mesostructured high-temperature ceramics from block copolymer mesophases." Macromolecular Chemistry and Physics 208(19-20): 2096-2108.
    The co-assembly between a polyisoprene-block-poly(dimethylaminoethyl methacrylate) block copolymer and poly(ureamethylvinyl)silazane is investigated. The hybrid morphology can be controlled by systematically increasing the ...

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