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Latest Crystal Stories

2012-01-18 13:06:56

Lead sulfide (PbS) forms when an equal number of lead and sulfur atoms exchange electrons and bond together in cubic crystals. Now scientists have determined that a structure comprising 32 lead-sulfur pairs is the smallest possible cubic arrangement that exhibits the same coordination as bulk lead sulfide. (The coordination number is the number of nearest neighbors each atom in the crystal has.) Researchers from McNeese State University in Louisiana, John Hopkins University in Maryland,...

2011-12-01 22:20:18

Issue highlights recent advances in liquid crystal material research for photonic applications Liquid crystals (LCs), a state of matter that has properties between those of a conventional liquid and those of a solid crystal, are fast becoming a household name thanks to their widespread use in television, smartphone and computer displays. As such, research and development in the area of liquid crystal materials (LCMs) has also been rapidly progressing in recent years. To highlight...

Nobel Chemistry Prize Awarded To Daniel Shechtman
2011-10-05 09:29:10

The Nobel prize for chemistry was awarded to an Israeli scientist whose work was once ridiculed for being out of line with received thinking. Daniel Shechtman, from the Israel Institute of Technology (Technion), won the entire $1.5 million 2011 Nobel prize for chemistry on Wednesday for discovering different ways in which atoms could be packed together in solid materials. His work has opened the door for experiments in the use of quasicrystals. The Royal Swedish Academy of Sciences said...

2011-08-31 23:38:08

In solid materials with regular atomic structures, figuring out weak points where the material will break under stress is relatively easy. But for disordered solids, like glass or sand, their disordered nature makes such predictions much more daunting tasks. Now, a collaboration combining a theoretical model with a first-of-its kind experiment has demonstrated a novel method for identifying “soft spots” in such materials. The findings from University of Pennsylvania and...

2011-08-03 14:36:52

Scientists have found opal-like crystals in the Tagish Lake meteorite, which fell to Earth in Canada in 2000. This is the first extraterrestrial discovery of these unusual crystals, which may have formed in the primordial cloud of dust that produced the sun and planets of our solar system 4.6 billion years ago, according to a report in the Journal of the American Chemical Society. Katsuo Tsukamoto and colleagues say that colloidal crystals such as opals, which form as an orderly array of...

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2011-06-20 08:29:38

Glass, by definition, is amorphous; its atoms lack order and are arranged every which way. But when scientists squeezed tiny samples of a metallic glass under high pressure, they got a surprise: The atoms lined up in a regular pattern to form a single crystal. It's the first time researchers have glimpsed this hidden property in a glass. The discovery, reported June 17th in Science, offers a new window into the atomic structure and behavior of metallic glasses, which have been used for...

2011-06-06 15:19:00

LOS ANGELES, June 6, 2011 /PRNewswire/ -- Do you love to see legendary sites, but dislike group tours? Renowned for unique and creative land tours that complement its ultra-luxury cruise experience, Crystal Cruises is introducing a private shore excursion alternative for individualistic adventurers. Crystal's new "Private Adventure Option" enables guests to take already-organized group excursions-in a more intimate fashion. (Photo: http://photos.prnewswire.com/prnh/20110606/LA14901)...

2011-05-16 16:11:33

On May 13th 2011, the journal Science publishes a paper where scientists from Risø DTU in collaboration with scientists from China and USA, report a new method for revealing a 3D picture of the structure inside a material. Most solid materials are composed of millions of small crystals, packed together to form a fully dense solid. The orientations, shapes, sizes and relative arrangement of these crystals are important in determining many material properties. Traditionally, it has only...

2011-05-12 22:33:03

Stronger than steel or titanium"”and just as tough"”metallic glass is an ideal material for everything from cell-phone cases to aircraft parts. Now, researchers at the California Institute of Technology (Caltech) have developed a new technique that allows them to make metallic-glass parts utilizing the same inexpensive processes used to produce plastic parts. With this new method, they can heat a piece of metallic glass at a rate of a million degrees per second and then mold it...


Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.