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:3/22/2017)... March 21, 2017   Neurotechnology , a ... technologies, today announced the release of the ... provides improved facial recognition using up to 10 ... single computer. The new version uses deep neural-network-based ... and it utilizes a Graphing Processing Unit (GPU) ...
(Date:3/20/2017)... -- At this year,s CeBIT Chancellor Dr. Angela Merkel ... Chancellor came to the DERMALOG stand together with the Japanese Prime Minster ... country. At the largest German biometrics company the two government leaders could ... recognition as well as DERMALOGĀ“s multi-biometrics system.   ... ...
(Date:3/13/2017)... Future of security: Biometric Face Matching software  Continue ... ... to match face pictures against each other or against large databases. The recognition ... ... software for biometric Face Matching on the market. The speed is at 100 ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... Md. , March 24, 2017  Infectex Ltd., ... (MBVF), today announced positive results of a Phase 2b-3 ... therapy regimen in patients with multidrug-resistant pulmonary tuberculosis (MDR-TB). ... scientists at Sequella, Inc. ( USA ) ... A total of 140 patients were enrolled in ...
(Date:3/24/2017)... , March 24, 2017 Agenus Inc. ... immune checkpoint antibodies and cancer vaccines, today announced participation ... 7 th  Annual William Blair and Maidstone Life Sciences ... Alexandria Center in New York, NY ... March 29 at 9:40 am: Robert B. ...
(Date:3/23/2017)... Mass. , March 23, 2017 /PRNewswire/ ... partner to global in vitro diagnostics manufacturers ... of the industry,s first multiplexed Inherited ... disease testing by next-generation sequencing (NGS). The ... were developed with input from industry experts ...
(Date:3/23/2017)... YORK , March 23, 2017 ... ... of death, putting significant strain on health care systems, in ... cancer diagnoses rises, so too does the development of innovative ... minimum side effects. Among the many types of cancer treatments, ...
Breaking Biology Technology: