• When it comes to nematic liquid crystals, the kind in most displays, we only have a few that have been demonstrated so far. (eurekalert.org)
  • Nematic liquid crystals are anisotropic fluids that self-assemble into vector fields, which are governed by geometrical and topological laws. (nature.com)
  • Nematic liquid crystals are described by cylindrical symmetry and are uniaxial, which makes n physically indistinguishable from − n 6 . (nature.com)
  • But there are other types of crystals, too. (eurekalert.org)
  • When the researchers brought them together, they noticed something strange: Under the right conditions in the lab, those two types of crystals pushed and squeezed each other, changing their orientation and arrangement. (eurekalert.org)
  • To create new electronic and other tools, materials scientists need new types of crystals with specific electrical and physical properties . (psc.edu)
  • But certain types of crystals may stick together and become kidney stones , which are hard, pebble-like pieces of material that form in the kidneys. (medlineplus.gov)
  • Vishay's frequency control product line offers a complete range of crystals and oscillators. (vishay.com)
  • Epson offers programming tools for their SG-8000 range of crystal oscillators. (newark.com)
  • These are one time programmable quartz crystal based PLL oscillators with a single frequency CMOS output. (newark.com)
  • A team at the University of Colorado Boulder has designed new kinds of liquid crystals that mirror the complex structures of some solid crystals--a major step forward in building flowing materials that can match the colorful diversity of forms seen in minerals and gems, from lazulite to topaz. (eurekalert.org)
  • The results come down to a property of solid crystals that will be familiar to many chemists and gemologists: Symmetry. (eurekalert.org)
  • We know everything about all the possible symmetries of solid crystals that we can make. (eurekalert.org)
  • In their latest findings, Smalyukh and his colleagues came up with a way to design the first liquid crystals that resemble monoclinic and orthorhombic crystals--two of those seven main classes of solid crystals. (eurekalert.org)
  • Solid crystals have similar properties. (eurekalert.org)
  • If you have too many minerals in your urine, certain minerals may clump together with other substances and form solid crystals. (medlineplus.gov)
  • Contest: What Would You Make with Swarovski Crystals? (makezine.com)
  • Comment to Win: What Would You Make with a Swarovski Crystal Sampler? (makezine.com)
  • has covered projects that use all kinds of materials - metal, wood, plastics, and resin, just for starters - but here's a material we have never covered: Swarovski crystals. (makezine.com)
  • We were recently surprised to receive a small box of crystals from Swarovski as promotional material for this year's Fall/Winter designs. (makezine.com)
  • The crystals are either clear, metallic gray, or an iridescent color that Swarovski is call scarabaeus green. (makezine.com)
  • It may be worth mentioning that Swarovski crystals are (as best as I can make out) lead crystal. (makezine.com)
  • I usually use natural materials like mother of pearl for inlays and embellishments, but I think using something as elegant as Swarovski crystals together with a medium as primal as bone would make for an interesting contrast… maybe even an artistic statement. (makezine.com)
  • A special issue of Crystals (ISSN 2073-4352). (mdpi.com)
  • Calcium crystals can form in the cornea (the clear, front part of the eye) because of certain medical conditions or medications. (medicinenet.com)
  • Additionally, calcium crystals can form in the vitreous (the gel-like substance that fills the middle of the eye) and can be seen as small dots or strands in the field of vision. (medicinenet.com)
  • Gout and pseudogout are the 2 most common crystalline arthropathies and are caused by deposition of monosodium urate (MSU) and calcium pyrophosphate dihydrate (CPPD) crystals, respectively. (medscape.com)
  • Calcium pyrophosphate dihydrate (CPPD) are shorter and less sharp than MSU crystals. (medscape.com)
  • Theiler G, Quehenberger F, Rainer F, Neubauer M, Stettin M, Robier C. The detection of calcium pyrophosphate crystals in the synovial fluid of patients with rheumatoid arthritis using the cytospin technique: prevalence and clinical correlation. (medscape.com)
  • Ivan Smalyukh, a professor in the Department of Physics at CU Boulder, explained that scientists categorize all known crystals into seven main classes, plus many more sub-classes--in part based on the "symmetry operations" of their internal atoms. (eurekalert.org)
  • Cubic crystals, which include diamonds and pyrite, for example, are made up of atoms arranged in the shape of a perfect cube. (eurekalert.org)
  • If you rotate those crystals by 90 or 180 degrees around many special axes, for example, all of the atoms stay in the right places," Smalyukh said. (eurekalert.org)
  • The atoms inside monoclinic crystals, which include gypsum or lazulite, are arranged in a shape that looks like a slanted column. (eurekalert.org)
  • Cryst giving details of the refinement of atoms continously disordered along a line, on a ring, or on the surface of a sphere (the 'special shapes' facility in CRYSTALS). (ccp14.ac.uk)
  • Each crystal contained about five billion iron atoms and generated magnetic forces that were nine orders of magnitude stronger than single ferritin cages. (acs.org)
  • NYU chemists have discovered crystal growth complexities, which at first glance appeared to confound 50 years of theory and deepened the mystery of how organic crystals form. (nyu.edu)
  • While the interest in L-cystine crystals is limited to the biomedical arena, understanding the details of crystal growth, especially the role of defects-or imperfections in crystals-is critical to the advancement of emerging technologies that aim to use organic crystalline materials. (nyu.edu)
  • Scientists in the Molecular Design Institute in the NYU Department of Chemistry have been examining defects in crystals called screw dislocations - features on the surface of a crystal that resemble a spiraled ham. (nyu.edu)
  • We propose that upon cooling from 160 to 140 K, domains of the crystal containing fewer defects stay in the tetragonal phase longer than highly defected domains that readily transform to the high bandgap orthorhombic phase at higher temperatures. (lu.se)
  • Traditional liquid crystals, however, don't display those kinds of complex structures. (eurekalert.org)
  • And, the team's creations are dynamic: If you heat the liquid crystals up or cool them down, for example, you can morph them into a rainbow of different structures, each with their own properties, said Haridas Mundoor, lead author of the new paper. (eurekalert.org)
  • JEWEL BOX Shining ultraviolet light on this thin slice of a kidney stone reveals layers of crystal growth (green and light blue) interspersed with large gemlike structures (dark blue) that show where the stone has dissolved and regrown. (sciencenews.org)
  • X-ray crystal structures provide results that are very easy to understand compared to other analytical techniques, and with modern hardware the entire experiment and analysis can be completed in a morning. (ccp14.ac.uk)
  • Here, we use double emulsions of water droplets inside radial nematic liquid crystal droplets to form various structures, ranging from linear chains to three-dimensional fractal structures. (nature.com)
  • A team led from the University of Illinois Chicago has taken a completely new artificial intelligence (AI) tack, coding crystal structures as abstract 3D images that powerful neural-network AI programs, honed for image recognition, can "understand" in a way far beyond human experts' abilities. (psc.edu)
  • a) The researchers obtained hypothetical crystal structures never synthesized using CSPD algorithms alongside those that are synthesized or naturally formed from the Crystallographic Open Database (COD). (psc.edu)
  • b) They converted the crystal structures (top) and properties data into digitized, abstract 3D images (bottom). (psc.edu)
  • To understand symmetry in crystals, first picture your body. (eurekalert.org)
  • Flip or rotate these crystals all you want, and they still have only two distinct symmetries--one mirror plane and one axis of 180-degree rotation, or the symmetry that you can see by spinning a crystal around an axis and noticing that it looks the same every 180 degrees. (eurekalert.org)
  • The end result was a nematic liquid crystal fluid with symmetry that looks a lot like that of a solid monoclinic crystal. (eurekalert.org)
  • Fouke, who usually travels to hot springs and coral reefs for his research on minerals and crystals, had never seen a stone that "doesn't grow and dissolve, grow and dissolve. (sciencenews.org)
  • Problems with metabolism can affect both the amount of minerals in your urine and the amount of substances that prevent minerals from forming crystals. (medlineplus.gov)
  • The equipment is used for measuring single crystal diffraction data for phase identification, alignement or structure solution of unknown materials. (lu.se)
  • As seen under the microscope, monosodium urate (MSU) crystals are long, thin and pointed, and are negatively birefringent. (medscape.com)
  • The Moon Crystal is very lightweight and pigmented as it contains actual crystal powder, it felt like I'm wearing diamonds on my eyelids! (sephora.com)
  • Without the liquid crystal between the polarizing filters, light passing through the first filter would be blocked by the second (crossed) polarizer. (wikipedia.org)
  • Lastly, these crystals have been found in other inflammatory arthritides such as rheumatoid arthritis but still have an unknown role. (medscape.com)
  • Crystals that form in the eyes can be made of various substances, depending on the underlying cause of their formation. (medicinenet.com)
  • Substances such as certain medications or some conditions such as infections or inflammation can also cause crystals to form in the eyes. (medicinenet.com)
  • A crystals in urine test is often part of a urinalysis , a test that measures different substances in your urine. (medlineplus.gov)
  • It may provide more complete results because the amount of crystals and other substances in urine can vary throughout the day. (medlineplus.gov)
  • The instrument is from Q-Sense fitted with E4 and E1 module and is able to collect, both the dissipation and the resonance frequency of a quartz crystal. (lu.se)
  • The researchers focused on L-cystine crystals, the chief component of a particularly nefarious kind of kidney stone. (nyu.edu)
  • Now, researchers reporting in ACS' Nano Letters have engineered genetically encoded protein crystals that can generate magnetic forces many times stronger than those already reported. (acs.org)
  • The researchers wondered if they could line the hollow interiors of the crystals with ferritin proteins to store larger amounts of iron that would generate substantial magnetic forces. (acs.org)
  • To make the new crystals, the researchers fused genes encoding ferritin and Inkabox-PAK4cat and expressed the new protein in human cells in a petri dish. (acs.org)
  • The researchers then broke open the cells, isolated the crystals and added iron, which enabled them to pull the crystals around with external magnets. (acs.org)
  • By introducing crystals that were pre-loaded with iron to living cells, the researchers could move the cells around with a magnet. (acs.org)
  • The jelly formula sets in a flash, adding a high-impact sparkle that applies like a gel, dries to a powder, and comes in a range of energetic hues packed with topaz, diamond, and sapphire crystals. (sephora.com)
  • The Thirteenth Annual International Health Regulations (IHR) Exercise Crystal was held at WHO Regional Office for the Western Pacific on 2-3 December 2021. (who.int)
  • Purex Crystals are a crystal-form in-wash "fragrance booster" (and formerly a crystal-form in-wash fabric softener) manufactured by Henkel and marketed in the United States and Canada. (wikipedia.org)
  • Introduced in 2011, the Purex Crystals product was the first crystal-form fabric softener sold in the United States. (wikipedia.org)
  • According to an article in Good Housekeeping, the Purex Crystals fabric softener could safely be used on active wear and children's polyester sleepwear without harming flame resistance properties. (wikipedia.org)
  • As of February 2022, the Purex website refers to Purex Crystals brand products as "fragrance boosters" rather than fabric softeners, as they did previously. (wikipedia.org)
  • Zooka Creative, the marketing team behind the launch of the Purex Crystals fabric softener product, won a Gold Effie Award from Effie Worldwide in 2012. (wikipedia.org)
  • Altogether, there are about 20 crystals: a few beads, a few pendants, a charm, a 4-hole button, and a 2-inch strip of graphic fabric with a crystalline coating (the graphic fabric is not pictured above). (makezine.com)
  • Insight into the structure and transport properties of pyrrolidinium-based geminal dicationic-organic ionic crystals: unravelling the role of alkyl-chain length. (bvsalud.org)
  • To fulfil this objective, a series of geminal di-cationic Organic Ionic Crystals (OICs), based on C3-, C6-, C8- and C9-alkylbridged bis-(methylpyrrolidinium) bromide are synthesized, and the structural features, thermal properties and phase behaviours of these as synthesized OICs have been investigated. (bvsalud.org)
  • A crystals in urine test is part of a microscopic exam of urine. (medlineplus.gov)
  • Before an electric field is applied, the orientation of the liquid-crystal molecules is determined by the alignment at the surfaces of electrodes. (wikipedia.org)
  • If the applied voltage is large enough, the liquid crystal molecules in the center of the layer are almost completely untwisted and the polarization of the incident light is not rotated as it passes through the liquid crystal layer. (wikipedia.org)
  • image: Graphic showing the arrangement of the disk-shaped molecules in a monoclinic liquid crystal with two symmetries. (eurekalert.org)
  • The most common liquid crystals, for example, are made up of tiny rod-shaped molecules. (eurekalert.org)
  • Liquid crystals are anisotropic fluids, in which the rigid and anisotropic constituent molecules have a strong tendency to form mesophases with long-range orientational order, described by the order parameter S . In the simplest and most widely studied liquid crystal phase, the nematic, the molecules are free to move around each other and lack any long range positional order. (nature.com)
  • The group had created, in other words, a material with the mathematical properties of a lazulite or gypsum crystal--but theirs could flow like a fluid. (eurekalert.org)
  • A normal joint fluid aspirate is negative for any crystals. (medscape.com)
  • Each flower or vibrational essence carries the unique and beautiful energies of a particular flower, gem, crystal, mineral or geometric shape in liquid form. (crystalherbs.com)
  • a very 'pure' form of meth, pure not meaning clean or safe, crystal meth is the farthest thing from clean and safe . (urbandictionary.com)
  • One common condition that can cause crystals to form in the eyes is called crystalline keratopathy. (medicinenet.com)
  • Cystine crystals can form in people with a rare inherited disorder called cystinosis. (medicinenet.com)
  • Crystals can form in the lens of the eye, a condition called cataracts. (medicinenet.com)
  • The authors hoped to improve their understanding of how these crystals form and grow in order to design therapeutic agents that inhibit stone formation. (nyu.edu)
  • The so-called BCF theory posited that crystals with one screw dislocation would form hillocks that resembled a spiral staircase while those with two screw dislocations would merge and form a structure similar to a Mayan pyramid-a series of stacked "island" surfaces that are closed off from each other. (nyu.edu)
  • Their results showed exactly the opposite of what BCF theory predicted-crystals with one screw dislocation seemed to form stacked hexagonal "islands" while those with two proximal screw dislocations produced a six-sided spiral staircase. (nyu.edu)
  • To drastically increase the amount of iron that a protein assembly can store, Bianxiao Cui and colleagues wanted to combine the iron-binding ability of ferritin with the self-assembly properties of another protein, called Inkabox-PAK4cat, that can form huge, spindle-shaped crystals inside cells. (acs.org)
  • The reason we want to know if we can or cannot make a certain crystal form of a material is the properties of materials highly depend on their structure. (psc.edu)
  • So if you target a certain property-let's say very high electric conductivity or superconductivity or a very hard material … [you] should be able to synthesize a certain crystal form [with that property]. (psc.edu)
  • In other words, while the crystals' physical appearance seemed at odds with the long-standing theory, they actually did grow in a manner predicted decades ago. (nyu.edu)
  • Square Enix has announced that the WiiWare version of Crystal Defenders R1 will be released in April, with follow-up game R2's date to be announced later. (eurogamer.net)
  • We present results from measurements of the native oxide film thickness on four different industrial aluminum alloys and three different aluminum single crystals. (lu.se)
  • The CRYSTALS software package for single crystal X-ray structure refinement and analysis consists of CRYSTALS , Cameron and specially recompiled versions of SIR92 and SHELXS . (ccp14.ac.uk)
  • A liquid-crystal display ( LCD ) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers . (wikipedia.org)
  • Discover other properties in Langkawi that offer a similar experience and ambiance to Easy Crystal Hotel. (hotelscombined.com)
  • Predicting what properties new materials, particularly crystals, will have is really important for developing tomorrow's smartphones, energy storage, aircraft and many other useful devices. (psc.edu)
  • Even with the best supercomputers, predicting the properties of a crystal from first principles is impossible. (psc.edu)
  • Scientists could often predict how changing a given atom in a crystal would change its properties. (psc.edu)
  • Other predictions, using a type of AI called machine learning , could predict when a given new crystal had the right properties and whether it was stable enough to exist. (psc.edu)
  • I would explore the light transmitting properties of these crystals to see if I can make light paintings that can be projected on the wall or ceiling, perhaps including sensors that can respond to the viewer by altering the output. (makezine.com)
  • Their properties are dependent on the crystal structure. (lu.se)
  • The company also uses "Purex With Crystals" as a branding label for liquid and powdered laundry detergent. (wikipedia.org)
  • Liquid crystals do not emit light directly [1] but instead use a backlight or reflector to produce images in color or monochrome . (wikipedia.org)
  • By controlling the voltage applied across the liquid crystal layer in each pixel, light can be allowed to pass through in varying amounts thus constituting different levels of gray. (wikipedia.org)
  • To date, however, scientists haven't been able to create liquid crystals--flowing materials that are found in most modern display technologies--that come in those same many flavors. (eurekalert.org)
  • There are a lot of possible types of liquid crystals, but, so far, very few have been discovered," Smalyukh said. (eurekalert.org)
  • To begin, the team mixed together two different kinds of liquid crystals. (eurekalert.org)
  • The movies show the growth of various crystals from an evaporating solution. (unco.edu)
  • Fouke suspects that, like the microbes in Yellowstone's hot springs, kidney microbes may jump-start crystal growth. (sciencenews.org)
  • Dislocations were first posed by William Keith Burton, Nicolás Cabrera, and Sir Frederick Charles Frank in the late 1940s as essential for crystal growth. (nyu.edu)
  • A re-examination of these micrographs by Molecular Design Institute scientist Alexander Shtukenberg, in combination with computer simulations, served to refine the actual crystal growth sequence and found that, in fact, BCF theory still held. (nyu.edu)
  • They appeared to contradict 60 years of thinking about crystal growth, but in fact revealed that crystal growth is at once elegant and complex, with hidden features that must be extracted if it is to be understood. (nyu.edu)
  • The aim of the course is that the student, once the course is completed, has aquired knowledge to understand crystal growth and especially semiconductor epitaxy. (lu.se)
  • explain crystal growth and epitaxy and the relevant concepts within thermodynamics and kinetics. (lu.se)
  • 2/4 · evaluate and choose an appropriate crystal growth method for a specific issue. (lu.se)
  • orally and in writing present issues concerning crystal growth in a scientific way. (lu.se)
  • discuss how crystal growth and epitaxy can contribute to a more sustainable society. (lu.se)
  • This course treats the fundamental aspects of crystal growth, e.g. the thermodynamic prerequisites for crystal growth such as chemical potential, construction of binary phase diagrams, supersaturation, and nucleation. (lu.se)
  • The course replaces FYST35 Physics: Crystal Growth and Semiconductor Epitaxy, 7.5 credits, and cannot be counted in a degree together with this course. (lu.se)
  • Topaz Crystal, Diamond Powder, and Sapphire Powder: Provide high reflection. (sephora.com)
  • This supremely buildable, bouncy powder highlights the eyes and cheeks with an effect that looks like a veil of crystal sparkle. (sephora.com)
  • Hey man I just scored some awesome crystal, wanna buy a gram ? (urbandictionary.com)
  • When the Gram stain is negative and there are no crystals apparent, it may be reasonable to withhold antibiotics and treat for a crystalline arthritis, unless there is a significant potential source of bacteremia such as a urinary tract infection or the patient exhibits significant systemic deterioration. (medscape.com)
  • Your health care provider may include a crystals in urine test in your urinalysis if you have symptoms of a kidney stone. (medlineplus.gov)
  • This occurs when small, crystal-like particles build up on the cornea and can cause vision problems, such as eye irritation and discomfort. (medicinenet.com)
  • Crystals in the vitreous can appear as small dots or strands in the field of vision and can be annoying, but they usually do not cause any serious vision problems. (medicinenet.com)
  • It's normal to have a few small crystals in your urine. (medlineplus.gov)
  • The strong dispersion inside the spectral hole will significantly slow down the group velocity of the light traveling in the crystal cavity to a small fraction of its speed in vacuum. (lu.se)
  • Kaja's Sparkle Effect Technology combines crystal powders and metallic-coated glitter pearls to reflect light from all angles. (sephora.com)
  • This is done by stabilizing a laser to a single crystal silicon Fabry-Pérot resonator at 124 K. The fundamental limit of this type of cavities is the thermal Brownian noise of the mirror coatings and the spacer. (lu.se)
  • I'd like the crystals to try and make a really cool belt, where each crystal would be mounted above an LED. (makezine.com)
  • We already heard "Dark Eyes," a cut from Brooklyn dour rockers Crystal Stilts' new EP, and now Sacred Bones has posted the rest of that release on their Soundcloud page. (stereogum.com)
  • The X-ray crystallographic structure analysis software CRYSTALS is being distributed from our website at an ever increasing rate, which has now risen to more than 6000 downloads a year. (ccp14.ac.uk)
  • If we talk about the material of chandeliers, these are usually made of steel, crystal/glass, hand-forged iron, and bronze. (fotolog.com)
  • After uttering a slew of jokes about Tuesday's Republican presidential debate, Tonight Show host Jimmy Fallon made sure to play the role of equal opportunity offender during Wednesday's monologue by teaming with comedian Billy Crystal to mock Democratic candidates Hillary Clinton and Bernie Sanders for being "so old" (in borrowing a bit often employed in the Jay Leno days). (newsbusters.org)
  • What are the crystals in your eyes made of? (medicinenet.com)
  • They are made of a similar kind of leaded crystal that fancy (and harmless) wine glasses are. (makezine.com)
  • It shows what the crystals are made of, how large they are, and how many are in your urine. (medlineplus.gov)
  • Cystine crystals can accumulate in cells throughout your body, including your eyes. (medicinenet.com)
  • However, they were unable to magnetize the cells by adding iron to crystals already growing in cells, possibly because the iron levels in cells were too low. (acs.org)
  • These magnetic protein crystals, isolated from cells, were stained with a blue dye that binds to iron. (acs.org)
  • This product is beautiful, I have the Tarte chrome pots, I also have the Natasha Denona chroma crystal top coats, and this one by hourglass is just as pigmented as the tarte ones and little more pigmented and shimmery than Natasha Denonas in my opinion. (sephora.com)
  • A project is well underway (and included in the distributed version) that aims to provide novice users of CRYSTALS with the expert decision-making tools required for undertaking unsupervised structure determination. (ccp14.ac.uk)
  • The decision-making system and validation tools are written in CRYSTALS' own macro language, SCRIPTS, so that they can be modified to accommodate expert knowledge without users needing to become expert programmers or install compilers. (ccp14.ac.uk)