Navigation Links
Discovery of new material state counterintuitive to laws of physics
Date:6/12/2013

LEMONT, ILL. --- When you squeeze something, it gets smaller. Unless you're at Argonne National Laboratory.

At that suburban Chicago laboratory, a group of scientists has seemingly defied the laws of physics and found a way to apply pressure to make a material expand instead of compress/contract.

"It's like squeezing a stone and forming a giant sponge," said Karena Chapman, a chemist at the U.S. Department of Energy laboratory. "Materials are supposed to become denser and more compact under pressure. We are seeing the exact opposite. The pressure-treated material has half the density of the original state. This is counterintuitive to the laws of physics."

Because this behavior seems so impossible, Chapman and her colleagues spent several years testing and retesting the material until they believed the unbelievable and understood how the impossible could be possible. For every experiment, they got the same mind-bending results.

"The bonds in the material completely rearrange," Chapman said. "This just blows my mind."

This discovery will do more than rewrite the science text books; it could double the variety of porous framework materials available for manufacturing, health care and environmental sustainability.

Scientists use these framework materials, which have sponge-like holes in their structure, to trap, store and filter materials. The shape of the sponge-like holes makes them selectable for specific molecules, allowing their use as water filters, chemical sensors and compressible storage for carbon dioxide sequestration of hydrogen fuel cells. By tailoring release rates, scientists can adapt these frameworks to deliver drugs and initiate chemical reactions for the production of everything from plastics to foods.

"This could not only open up new materials to being porous, but it could also give us access to new structures for selectability and new release rates," said Peter Chupas, an Argonne Lab chemist who helped discover the new materials.

The team published the details of their work in the May 22 issue of the Journal of the American Chemical Society in an article titled "Exploiting High Pressures to Generate Porosity, Polymorphism, And Lattice Expansion in the Nonporous Molecular Framework Zn(CN)2 ".

The scientists put zinc cyanide, a material used in electroplating, in a diamond-anvil cell at the Advanced Photon Source (APS) at Argonne Lab and applied high pressures of 0.9 to 1.8 gigapascals, or about 9,000 to 18,000 times the pressure of the atmosphere at sea level. This high pressure is within the range affordably reproducible by industry for bulk storage systems. By using different fluids around the material as it was squeezed, the scientists were able to create five new phases of material, two of which retained their new porous ability at normal pressure. The type of fluid used determined the shape of the sponge-like pores. This is the first time that hydrostatic pressure has been able to make dense materials with interpenetrated atomic frameworks into novel porous materials. Several series of in situ high-pressure X-ray powder diffraction experiments were performed at the 1-BM, 11-ID-B, and 17-BM beamlines of the APS to study the material transitions.

"By applying pressure we were able to transform a normally dense, nonporous material into a range of new porous materials that can hold twice as much stuff," Chapman said. "This counterintuitive discovery will likely double the amount of available porous framework materials, which will greatly expand their use in pharmaceutical delivery, sequestration, material separation and catalysis."

The scientists will continue to test the new technique on other materials.


'/>"/>

Contact: Tona Kunz
tkunz@anl.gov
630-252-5560
DOE/Argonne National Laboratory
Source:Eurekalert

Related biology news :

1. Discovery of the gene responsible for multiple intestinal atresia in newborns
2. Autism discovery paves way for early blood test and therapeutic options
3. Eurofins MWG Operon and Floragenex close co-marketing agreement for RAD discovery and RAD genotyping
4. Discovery pinpoints cause of 2 types of leukemia
5. Discovery shows fat triggers rheumatoid arthritis
6. Pitt discovery holds potential in destroying drug-resistant bacteria
7. Discovery of new hormone opens doors to new type 2 diabetes treatments
8. Discovery may help prevent chemotherapy-induced anemia
9. Discovery may help prevent HIV reservoirs from forming
10. An important discovery in breast cancer by IRCM researchers
11. Genetic discovery found to influence obesity in people of African ancestry
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/2/2017)... 2, 2017  EyeLock LLC, a market leader of ... paper " What You Should Know About Biometrics in ... user authenticity is a growing concern. In traditional schemes, ... However, traditional authentication schemes such as username/password suffer from ... authentication offers an elegant solution to the problem of ...
(Date:1/30/2017)...   Invitae Corporation (NYSE: NVTA ... today announced that it will report its fourth quarter ... on Monday, February 13, 2017, and Invitae,s management team ... p.m. Eastern / 1:45 p.m. Pacific. ... financial results, guidance, and recent developments and will spend ...
(Date:1/24/2017)... NEW YORK , Jan. 24, 2017 /PRNewswire/ ... market study of the laboratory use of nuclear ... of 363 experienced end-users and profiled current practices, ... three years, as well as growth and opportunities. ... NMR, Instrument suppliers, NMR instruments, needs and innovation ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... Therapeutics, Inc. (NASDAQ: PETX), a pet therapeutics company focused on ... companion animals, will host a live conference call on Tuesday, ... results from the fourth quarter and full year ended December ... access the audio webcast or use the conference ... ...
(Date:2/22/2017)... ... February 22, 2017 , ... Park Systems , a leader in Atomic ... all SPIE attendees and Park customers on Feb. 27, 2017 from 12-2pm ... Jose Convention Center. The luncheon will feature a talk on Automated AFM for ...
(Date:2/22/2017)... 2017 Scientists propose in Nature ... in Gaucher and maybe other lysosomal storage diseases as ... than current therapies. An international research team ... which also included investigators from the University of Lübeck ... Feb. 22. The study was conducted in mouse models ...
(Date:2/22/2017)... ... February 22, 2017 , ... ProMIS ... precision treatments for neurodegenerative diseases, today announced it has issued a scientific white ... is one of a series of commentaries from ProMIS’s scientific team offering insight ...
Breaking Biology Technology: