By building an image-enhanced reflector above the transmissive region of liquid crystal cell, the transmissive light can follow the similar path with ambient light that both reflective and transmissive portions can achieve high optical efficiency. same response time and color saturation. Furthermore, onk single retardation film is required in this transflective color TFT-LCD, and ambient light ...

Liquid crystals exhibit orientation-dependent phases ranging from a disordered ~isotropic! phase to a highly ordered crystalline phase. In between these extremes, increasing order can result in nematic and smectic phases. Typically, molecular simulation studies of liquid-crystal behavior use a nonspherical hard-body monomer. In this work, molecular simulation is used to study dimers of hard pro...

Cobalt(II) compounds [Co(C10C8C2-terpy)2](BF4)2 (1) and [Co(C12C10C2terpy)2](BF4)2 (2) (CxCyCz-terpy = 4’-5’’’-Alkyl-1’’’-alkoxy-2,2’:6’,2’’-terpyridine) with branched alkyl chains, based on a terpyridine frame, were synthesized. The cobalt(II) compounds 1 and 2 exhibit the spin transition between low-spin and high-spin with thermal hysteresis loop at the liquid crystal transition temperature (...

We point out that the global symmetries of the Yang-Mills theory in the Landau gauge support existence of variables similar to director fields in liquid crystal systems. We discuss two different types of the liquid crystal variables associated with the group of global Euclidean rotations and with a residual global group of color transformations. These global symmetries allow to identify various...

The term liquid crystal describes a fluid in which geometrical structure of individual molecules can induce a tendency to align in certain ways with other molecules or with external magnetic or electric fields or with container boundaries. The degree and nature of molecular alignment strongly influences the optical properties of the liquid crystal, a phenomenon that lies at the heart of the cur...

Intensive research in bio-engineering has been conducted in the search for flexible biomaterials that could support cell growth and cells attachment. Flexible synthetic materials that support cell growth without the aid of synthetic extracellular matrix proteins are still rare. Cholesteryl liquid crystal containing cholesteryl moieties may have suitable biological affinity. Human keratinocytes ...

In recent years the dispersion and directed assembly of nano-particles in liquid crystal media has proved an interesting field for investigation and one that may yield new hybrid materials for optical applications and fundamental research. In this paper, we investigate the dispersion of quantum dots in different liquid crystal phases, looking at aggregation and pattern formation. Quantum dot se...

Using liquid crystals to control the propagation of microwaves is a potentially interesting technology. By incorporating small amounts of liquid crystal in thin slat metal structures through which the microwaves may resonantly pass a whole new range of voltage tuned microwave devices are becoming available. Metallic sub-wavelength slit structures at microwave frequencies have been constructed w...

We investigate theoretically the wetting properties of cholesteric liquid crystals at a planar substrate. If the properties of substrate and of the interface are such that the cholesteric layers are not distorted, the wetting properties are similar to those of a nematic liquid crystal. If, on the other hand, the anchoring conditions force the distortion of the liquid crystal layers the wetting ...

T he major reason for monitoring intraoperative temperature is for detection of fever, malignant hyperthermia, and hypothermia. Inadvertent hypothermia-defined by an absolute core temperature <36”C-is by far the most common perioperative thermal disturbance. However, hypothermia may be difficult to evaluate using liquid-crystal thermography, because skin temperatures are l-4°C less than core te...