Biaxial characterization of poly(ether‐ether‐ketone) for thermoforming: A comparison between bulge and in‐plane biaxial testing

Biaxial Discotic Gay-berne Mesogens and Biaxial Nematics

We investigate the thermotropic liquid crystal phases formed in a system of biaxial discotic mesogenic Gay-Berne particles with strong in-plane interactions when the attractive and repulsive biaxialities have the same or the opposite sign. We find that a biaxial nematic phase is obtained when the shape and well depth anisotropies have the same sign while we do not observe a columnar phase.

Comparison between Biaxial Flexural Strength and Microstructure of Polished and Glaze-Fired Specimens of Zirconia Lithium Silicate Glass Ceramic

Introduction: There has been a growing interest in glass ceramic systems with good esthetics, high fracture resistance, bonding durability, and simplified fabrication techniques using CAD/CAM. The aim of this study was to compare flexural strength in "polished" and "glazed and fired" specimens of zirconium lithium silicate (ZLS) CAD/CAM blocks Celtra Duo. Methods</stron...

Biaxial Smectic Banana Phases

Biaxial total-wrist arthroplasty.

Sixty-four consecutive biaxial total wrist arthroplasties performed in 52 patients between March 1983 and June 1988 were reviewed. Fifty-seven cases involving 45 patients were followed for a minimum of 5 years or until failure. Of the remaining 7 patients, 6 had died and 1 was lost to follow-up study. For the 46 intact implants in living patients, the mean follow-up period was 6.5 years (range,...

Characterization of geometric structures of biaxial nematic phases

The ordering matrix, which was originally introduced by de Gennes, is a well-known mathematical device for describing orientational order of biaxial nematic liquid crystal. In this paper we propose a new interpretation of the ordering matrix. We slightly modify the definition of the ordering matrix and call it the geometric order parameter. The geometric order parameter is a linear transformati...