Sentences with word «nematic»

Nemoptic's displays are based on twisting nematic liquid crystals.

Reversible fragmentation and self - assembling of nematic liquid crystal droplets on functionalized pyroelectric substrates F. Merola, S. Grilli, S. Coppola, V. Vespini, S. De Nicola, P. Maddalena, C. Carfagna, and P. Ferraro Advanced Functional Materials 22, 3267 - 3272 (2012).

The image on the right shows a heated strip of nematic elastomer contracting to lift a 30 - gram weight.

The central region of the drop was isotropic, and it was surrounded by the aligned nematic phase.

However, since the active nematic used in this work is far from equilibrium, the researchers also found how the internal activity changed and enriched the expectations.

Development of these «stable nematic droplets with handles» was described May 20 in the early edition of the journal Proceedings of the National Academy of Sciences (PNAS).

The Xoom uses a twisted nematic display as opposed to an in - plane switching display found in the iPad and the Transformer.

Acetylene polymerizations were carried out using the catalyst titanium tetra - n - butoxide — triethylaluminum dissolved in the chiral nematic LC solvent.

A.N. Pargellis, B. Yurke, N. Turok, Coarsening Dynamics in Nematic Liquid Crystals, Mol.

(But Angele adds that Nemoptic's displays — which use a material called nematic liquid crystals — switch color in a hundredth of a second.)

That's thanks to being based on active matrix bistable nematics, which allows for a 30 millisecond refresh and what looks like fairly decent resolution.

In research reported in the journal Nature Physics, scientists from the Georgia Institute of Technology and Leiden University in The Netherlands have described the results of a combined theoretical and experimental examination of such an active nematic on the surface of donut - shaped — toroidal — droplets.

Scientists had previously changed the shape of such polymers, known as nematic elastomers, using heat.

E 69, 041102 (2004)-RSB- that nematic defects on the curved surface of such droplets will be sensitive to the local curvature.

However, the researchers didn't use actual worms, but an active nematic composed of flexible filaments covered with microscopic engines that are constantly converting energy into motion.

A collaborative effort among experimentalists and theorists established the particular nematic nature of the order.

«We used these techniques to observe the pattern formed by beams of particles shot through powder samples of the superconductors under a range of temperatures and other conditions to see if there's a structural change that corresponds to the formation of this special type of nematic state,» said Ben Frandsen, a graduate student in physics at Columbia and first author on the paper.

In this case, called nematic order, every space on the checkerboard is white, but the shapes of the spaces are distorted from a square to a rectangle; as you turn round and round on one space, your neighboring space is nearer or farther depending on the direction you are facing.

Thin nematic film (liquid crystals)(200x) Polarized - light microscopy Dr. Oleg D. Lavrentovich Liquid Crystal Institute Kent State University Kent, Ohio, USA

«Oscillating Chiral ‐ Nematic Fingerprints Wipe Away Dust ``, Wei Feng, Dirk J. Broer & Danqing Liu, Advanced Materials 2018, 30, 1704970, DOI: 10.1002 / adma.201704970

I. Cheung, N. Turok, B. Yurke, A.N. Pargellis, Coarsening Dynamics in Uniaxial Nematic Liquid Crystals, Physical Review E47, 1993, 3343

E Ink will lend the assist with their technical knowledge and help DKE develop e-paper products and DKE will use its STN (super-twisted nematic)- TFT manufacturing equipment to produce segmented e-paper modules which will be more competitive in price than e-paper modules based on active matrix TFT backplanes.

The 480 × 800 pixel display gives a pixel density of 133dpi, which is actually slightly higher than Apple's iPad 2 (at 131dpi), but the panel used is a basic Twisted Nematic model.

IPS screens provide a much more vibrant image than the twisted - nematic panels found in most budget monitors.

The screen features a twisted nematic display technology for faster response while watching sports and playing games.

Helical polyacetylene was synthesized under an asymmetric reaction field consisting of chiral nematic (N *) liquid crystals (LCs).

The technology is based on active matrix bistable nematics that brings down refresh rates to just 30 millisecond while also allowing for good quality resolution.A high refresh rate translates to screen getting updated almost instantaneously.

Cloud M5 II sports a 5 inch twisted Nematic Display (common type of LCD display) supporting FWVGA (854 x 480 pixels) resolution.

By studying toroidal droplets covered by this active nematic, the researchers confirmed a longstanding theoretical prediction about liquid crystals at equilibrium, first discussed by Bowick, Nelson and Travesset [Phys.Rev.

Chelsea competed with mainly 3 top quality players in that role last season, namely Kante, Nematic, and Fab, and they do nt even have to contend with Europa nights....

The chiral nematic LC was prepared by adding a chiroptical binaphthol derivative as a chiral dopant to a mixture of two nematic LCs.

During drying, the Sunset Yellow concentration varied within the drop, and microscope images revealed the formation of different fluid phases such as the isotropic liquid (random), liquid crystal nematic (aligned) and liquid crystal columnar (cylindrically packed) phases that segregate to different regions of the drop.

In this situation, we would say the worms form a nematic liquid crystal, an ordered phase similar to the materials used in many flat panel displays.

«It expresses how the alignment direction of the nematic liquid crystal changes as we go around the defect.

However, the nematic phase formed by the worms is filled with tiny regions where the local alignment is lost — defects in the otherwise aligned material.

In addition, because the worms are constantly moving and changing their configuration, this nematic phase is active and far from equilibrium.

Among the surprises is that the nematic droplets created with toroidal shapes become chiral, that is, they adopt a certain twisting direction and break their mirror symmetry.

A toroidal droplet made of a nematic liquid crystal material is shown inside a polymeric material.

«This is the first time that stable nematic droplets have been generated with handles, and we have exploited that to look at the nematic organization inside those spaces,» said Fernandez - Nieves.

The experiments proved these new superconductors have the second type of electron density distribution, called a nematic.

BaFe2As2 is what is called a «nematic» crystal because its structure goes through a phase transition before it becomes superconducting.

At a sufficiently high level of concentration, the rods are pushed close enough together that they begin to align parallel to one another, forming what is known as a «nematic» phase.

As the concentration of the drops increases further, however, the liquid crystal evolves from the nematic phase to the «columnar» phase, in which the rods pack together like bundles of straws.

LCLC droplets in columnar (above) and nematic (below) phases.

I. Cheung, N. Turok, B. Yurke, Late Time Coarsening Dynamics in a Nematic Liquid Crystal, Physical Review Letters 66, 1991, 2472

The best touch - screen desktops use in - plane switching (IPS) rather than generic twisted nematic (TN) display technology, letting users view the screen from broader angles before seeing a fall - away in image color and clarity.

On the other hand, Nematic means making use of nematic LCDs that are cheap while being quite sturdy.

Technically the technology can be termed as «Bistable Nematic (BiNem) Active Matrix e-paper display» where the term «Bistable» refers to the ability of the display to keep showing an image even with the power switched off.

Popular panel types used in desktop displays are Twisted Nematic (TN), Vertical Alignment (VA), Patterned Vertical Alignment (PVA), Super PVA (S - PVA), Multi-Domain Vertical Alignment (MVA), and In - Plane Switching (IPS).