Latest Glass physics Stories

2011-01-13 09:06:15

Amorphous palladium-based alloy demonstrates unprecedented level of combined toughness and strength; could be of use in biomedical implants Glass is inherently strong, but when it cracks or otherwise fails, it proves brittle, shattering almost immediately. Steel and other metal alloys tend to be tough"”they resist shattering"”but are also relatively weak; they permanently deform and fail easily. The ideal material, says Marios Demetriou, a senior research fellow at the California...

2011-01-11 07:44:41

Lynn Yarris, Berkeley Lab Glass stronger and tougher than steel? A new type of damage-tolerant metallic glass, demonstrating a strength and toughness beyond that of any known material, has been developed and tested by a collaboration of researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab)and the California Institute of Technology. What's more, even better versions of this new glass may be on the way. "These results mark the first use of a...

2010-11-30 15:15:47

Glass is something we all know about. It's what we sip our drinks from, what we look out of to see what the weather is like before going outside and it is the backbone to our high speed communications infrastructure (optical fibers). But what most people don't know is that "glass transitions," where changes in structure of a substance accompanying temperature change get "frozen in," can show up during cooling of most any material, liquids through metals. This produces "glassy states," of that...

2010-06-16 22:02:23

The secret life of water just got weirder. For years water has been known to exist in 15 phases -- not just the merry threesome of solid, liquid and gas from grade school science. Now, University of Utah chemists have confirmed the coexistence of ice and liquid after water crystallizes at very low temperatures. They describe their work in the June 21 issue of the Journal of Chemical Physics, which is published by the American Institute of Physics (AIP). It takes more than a swizzle stick and...

2010-04-21 13:55:56

Supercooling, a state where liquids do not solidify even below their normal freezing point, still puzzles scientists today. A good example of this phenomenon is found everyday in meteorology: clouds in high altitude are an accumulation of supercooled droplets of water below their freezing point. Scientists from the Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), the Centre National de Recherche Scientifique (CNRS) and the ESRF have found an...

2010-03-05 12:36:30

In research published in the March 4 issue of the journal Nature, Northeastern University physicists have pioneered the development of large-scale computer simulations to assess how cracks form and proliferate in materials ranging from steel and glass to nanostructures and human bones. For years, scientists have tried to understand the propagation of cracks and how they affect the materials in which they form, said Alain Karma, distinguished physics professor and lead investigator on the...

2009-03-24 09:52:28

Metallic glass that's stronger and lasts longer The normal structure of metals is crystalline. Glass, on the other hand, is amorphous. But it's possible to make amorphous forms of metal, metallic glasses, which can be remarkably strong, having many properties equal to or better than their crystalline metal cousins. The catch is that bulk metallic glasses are highly susceptible to fatigue, a severe problem for their use as structural materials. Now researchers at the U.S. Department of...

2009-03-17 11:43:44

Many households harbor a threat to young children that safety regulations, surprisingly, have overlooked: glass-topped tables and tables with glass panels. A review by Children's Hospital Boston, in collaboration with Consumers Union, nonprofit publisher of Consumer Reports, finds that glass-table injuries aren't as rare as one might think, and that many could have been avoided had tempered glass been used.The report appears in the March issue of Pediatric Emergency Care. Consumer tips and...

2009-02-07 09:14:31

Scientists can easily explain the structural order that makes steel and aluminum out of molten metal.  And they have discovered the molecular changes that take place as water turns to ice. But, despite the fact that glass blowers have been plying their trade since the first century BC, we have only just begun to understand what makes molten glass solid. One hundred and fifty years after the construction of Crystal Palace at the Great Exhibition, scientists at The University of Nottingham...

2008-11-21 10:38:38

The Naval Research Laboratory (NRL) is part of an international team of scientists that is learning more about how cracks form in brittle materials. The team used both computer modeling and experimentation to investigate how cracks grow at low speeds in silicon. This information has potential applications in the development of a variety of materials ranging from armor to machine parts. The research team published their findings in the October 30th edition of Nature. Using the computer...

Word of the Day
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'