Abstract
The viscoelastic behavior of a nematic dimer is studied by deuteron (2H) nuclear magnetic resonance (NMR) spectroscopy using a cone-and-plate rheometer. From the H2 NMR spectra, monitored as a function of the shear rate, the orientation of the director relative to the magnetic field is obtained. Analysis of this experiment, using an analytical and a numerical solution of the Leslie–Ericksen equations, gives detailed information on the viscoelastic properties of the dimer. In particular, the two Leslie viscosities α2 and α3 and the three-dimensional director distribution are determined. The analysis reveals that α2 and α3 are both positive, that is, the dimer is of the flow-aligning type, and the director is tilted by an angle of about 33° from the magnetic field toward the velocity axis.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
