In a previous deuterium NMR study conducted on a liquid crystalline (LC) polymer with laterally attached book-shaped molecules as the mesogenic moiety, we have revealed a biaxial nematic phase below the conventional uniaxial nematic phase (Phys. Rev. Lett. 2004, 92, 125501). To elucidate details of its formation, we here report on deuterium NMR experiments that have been conducted on different ...

The nonlocal nonlinear buckling of a double layer graphene sheet (DLGS) covered by zinc oxide (ZnO) piezoelectric layers is investigated in this study. The surrounding circumstances of the system are considered as a Pasternak foundation including spring constants and a shear layer. Graphene sheets are subjected to longitudinal magnetic field and biaxial forces. On the other hand, the ZnO piezoe...

Three test methods, uniaxial bias extension, biaxial and picture frame tests are used to characterise the shear behaviour of dry woven fabric during draping. The deformation of the bias extension and biaxial specimens is measured from images of a central gauge section. The forces applied to the material are resolved into forces along and parallel to the tow directions. The deformation of the ma...

The band structure (BS) of Si with arbitrary stress/strain conditions has been calculated using the empirical non-local pseudopotential method (EPM). It is shown that the change of the effective masses cannot be neglected for general stress conditions and how this effect together with the strain induced splitting of the conduction bands can be used to optimize electron mobility enhancement Δμn....

We report on a series of measurements on the microscopic structure and the magneto-optical properties of a calamitic liquid crystalline compound in its nematic phase. Structural studies show the existence of short-range, tilted smectic order consistent with pretransitional effects above an underlying smectic phase. Concomitantly, magneto-optical results exhibit the existence of an optic axis no...

TCAD tools have been used to study the influence of both the uniaxial (process-induced) and biaxial (substrate-induced) strain on nanoscale MOSFETs down to 45 nm gate length. Processinduced stress has been introduced using SiGe, SiGeC, and SiC in the source/drain regions. Scalability of strained-Si MOSFETs and SPICE parameter extraction by combining TCAD and BSIM3 model are presented for the fi...

We investigate the phase behavior of tetrapods, hard nonconvex bodies formed by four rods connected under tetrahedral angles. We predict that, depending on the relative lengths of the rods these particles can form a uniaxial nematic phase, and more surprisingly they can exhibit a cubatic phase, a special case of the biaxial nematic phase. These predictions may be experimentally testable, as exp...

A review of basic papers related to development and implementation of rather efficient mathematical methods aimed at formation of Green’s functions for various types of anisotropic media: uniaxial and biaxial, generalized gyrotropic, layered etc. is provided. Advantages and drawbacks of the methods aimed at both the analytical results and the possibility of numeric or asymptotic estimates of th...

The phase behavior of rod-plate mixtures was investigated using model systems containing unambiguously rod- and plate-shaped colloids. We find that the theoretically disputed biaxial nematic phase is unstable with respect to demixing into an isotropic and two uniaxial nematic phases. The phase behavior at very high densities is exceptionally rich and includes the coexistence of up to four diffe...