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Stories about: crystals


How Can a Magnet Change the Color of a Liquid?

Nanotechnology is full of surprises and new applications are discovered every day. One of the most unusual is the recent experiment of a team of scientists who were able to make a magnet change the color of a liquid, turning it from coffee-brown to orange, then green and finally dark blue.The liquid is actually a so...

6 July 2007
09:02 GMT

Why Is Mother-of-Pearl Almost as Strong as Diamond?

For the past century, mankind reached an unprecedented degree of development that would made our ancestors consider us wizards. Technological breakthroughs are in the news everyday, new materials are created that almost defy logic, if not the laws of physics.However, nature keeps surprising us when we least expect i...

3 July 2007
04:51 GMT

Rock The Party, With The Dress That Shines in The Dark!

Apparently, a woman's inner charm is not enough to turn a few heads. Some Japanese thought it might be better to dress us in lights, or at least to give us a couple of dresses with a large number of attached LEDs, known as light emitting diodes, to be more specific.The dress allows any woman to shine in the dark...

20 June 2007
03:07 GMT

High Flux Isotope Uranium Reactor Back on Line

A high flux isotope reactor went online after more than a year of repairs, systems checks and improvements that cost more that $70 million. It's a research reactor at the Department of Energy's Oak Ridge National Laboratory internationally recognized as a neutron source for materials studies and isotope pr...

18 May 2007
15:36 GMT

Colloids May Produce New and More Efficient Optical Fibers

Colloids have been used for over 3,000 years, since the invention of ink, but only recently have scientist been able to decipher some of their unique properties. They are heterogeneous mixtures made of tiny particles or droplets that visually appear to be homogeneous solutions, meaning that they are in fact a mixtur...

17 May 2007
05:12 GMT

New Platinum Nanocrystals Boost Fuel Cells Efficiency

A new form of platinum has been produced by a research team composed of electrochemists and materials scientists, which can greatly increase the present catalytic chemical processes such as those used to catalyze fuel oxidation and produce hydrogen for fuel cells. The new nanocrystals have a "tetrahexahedral" struc...

4 May 2007
05:41 GMT

How Can a Cube Made of Water Freeze in Thorns?

Have you ever seen an ice cube with a strangely looking spike coming from it? How can a flat surface of water freeze upwards, defying gravity to form this unusual thorn?It's just physics. Water is a substance more complex than you might have thought. Besides being the absolutely necessary element for life in th...

1 May 2007
16:31 GMT

World's Lowest Density Crystals - 1 gram = 4500 square meters (1 acre)

Reticular chemistry deals with the ability to construct chemical structures from molecular building blocks to create new classes of materials of exceptional variety.A team of chemists from the Center for Reticular Chemistry at UCLA's California NanoSystems Institute and the departments of chemistry and biochemi...

13 April 2007
10:34 GMT

Crystals That Change Shape

Certain polymers and glasses are known to change shape when exposed to light. This is called a piezoelectric effect, and means that piezoelectric crystals, when subjected to an externally applied voltage, can change shape by a small amount, about 0.1% of the original dimension.Researchers in Japan have discovered or...

12 April 2007
06:35 GMT




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