Navigation Links
Search for advanced materials aided by discovery of hidden symmetries in nature
Date:4/3/2011

metry enriches the mathematical language that researchers use to describe a crystalline material's structure and to predict its properties. "Rotation reversal is an absolutely new approach that is different in that it acts on a static component of the material's structure, not on the whole structure all at once," Litvin said. "It is important to look at symmetries in materials because symmetry dictates all natural laws in our physical universe."

The most simple type of symmetry -- rotation symmetry -- is obvious, for example, when a square shape is rotated around its center point: the square shows its symmetrical character by looking exactly the same at four points during the rotation: at 90 degrees, 180 degrees, 270 degrees, and 360 degrees. Gopalan and Litvin say their new rotation-reversal symmetry is obvious, as well, if you know where to look.

The "eureka moment" of the discovery occurred when Gopalan recognized that the simple concept of reversing the direction of a spiral-shaped structure from clockwise to counterclockwise opens the door to a distinctly new type of symmetry. Just as a square shape has the quality of rotation symmetry even when it is not being rotated, Gopalan realized that a spiral shape has the quality of rotation-reversal symmetry even when it is not being physically forced to rotate in the reverse direction. Their further work with this rotation-reversal concept revealed many more structural symmetries than previously had been recognized in materials containing various types of directionally oriented structures. Many important biological molecules, for example, are said to be either "right handed" or "left handed," including DNA, sugars, and proteins.

"We found that rotation-reversal symmetry also exists in paired structures where the partner components lean toward each other, then away from each other in paired patterns symmetrically throughout a material," Gopalan said. These "tilting octahedral" struc
'/>"/>

Contact: Barbara Kennedy
science@psu.edu
814-863-4682
Penn State
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. TGen and Scottsdale Healthcare researchers discover microRNA role in brain metastasis
2. Transgenomic, Inc. Presentations to Describe High-Sensitivity Detection of Cancer Biomarkers at the 2011 American Association for Cancer Research Meeting
3. Carnegie Mellon researchers electrify polymerization
4. LasikPlus® Research Reveals Excellent Results From Modern LASIK
5. Stanford researchers use river water and salty ocean water to generate electricity
6. Marshall Edwards to Report new Data on Mitochondrial Inhibitor Program at American Association for Cancer Research Annual Meeting
7. Sigma® Life Science Joins AMDeCs Vendor Partnership Program, Further Enhancing Value to Academic Medical Research Centers
8. Tibotec Advances Global Clinical Research Program for TMC435 in HCV; Will Present Four Abstracts Evaluating Safety and Efficacy at EASL
9. UBC researchers develop new model to predict the optical properties of nano-structures
10. Ontario Institute for Cancer Research Announces Investment in Microfluidics Technology for the Discovery of Anti-Cancer Drugs
11. Tengion Announces Addition of Two Renal Experts to Research & Development Advisors Panel
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Search for advanced materials aided by discovery of hidden symmetries in nature
(Date:1/23/2015)... (PRWEB) January 23, 2015 Biofertilizers stimulate ... such as nitrogen and phosphorous through the activities in ... biofertilizers is increasing due to the stress on reducing ... fertilizers. , The report defines and segments the bio ...
(Date:1/22/2015)... RBJ today announces the firm brokered a long-term lease totaling ... biopharmaceutical company, at Two Ledgemont Center in Lexington, ... president, and Brian Cohen , senior vice president, represented ... 95 Hayden Ave. Photo - http://photos.prnewswire.com/prnh/20150122/170765 ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Protocol Networks ... The growing team of brand-neutral, independent consultants, Protocol Networks ... Rogers explained that over the years, his company has ... Moroso, Town of Plainfield, as well as others. With ...
(Date:1/22/2015)... Wilmington, DE (PRWEB) January 22, 2015 ... the Pistoia Alliance, which helps companies check the legal ... set to expand to China. , As their ... companies are globally adopting software solutions built as a ...
Breaking Biology Technology:Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 2Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 3Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 4Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Protocol Networks Brings Independent Technology Consulting to the Constitution State 2Global Compliance Service for Controlled Substances to Expand to China 2
... AEterna Zentaris Inc. (NASDAQ: AEZS ; TSX: ... on endocrine therapy and oncology, today announced that ... clinical development of the growth hormone secretagogue (GHS) ... be the first oral diagnostic test approved for ...
... BEIJING, Oct. 19 /PRNewswire-Asia-FirstCall/ -- China Medical Technologies,Inc. ... medical device,company that develops, manufactures and markets advanced in-vitro ... for its SPR-,based analysis system (the "SPR System") from ... , The SPR System utilizes ...
... , PHILADELPHIA, Oct. 17 UCB today announced data ... function, pain and fatigue of rheumatoid arthritis (RA) as ... of structural joint damage (seen at week 24) following ... was sustained up to 100 weeks. Cimzia® is approved ...
Cached Biology Technology:AEterna Zentaris to Complete Phase 3 Clinical Trial of Macimorelin (AEZS-130) as First Oral Diagnostic Test for Growth Hormone Deficiency 2AEterna Zentaris to Complete Phase 3 Clinical Trial of Macimorelin (AEZS-130) as First Oral Diagnostic Test for Growth Hormone Deficiency 3China Medical Technologies Announces the SFDA Approval for its SPR System 2China Medical Technologies Announces the SFDA Approval for its SPR System 3UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 2UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 3UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 4UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 5UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 6UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 7UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 8UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 9UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 10UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 11UCB's Cimzia(R) (certolizumab pegol), Shows Rapid and Sustained Clinical Response in Adult Patients Living with Moderate to Severe Rheumatoid Arthritis 12
(Date:1/22/2015)... NXTD and NXTDW) a biometric authentication company focused on ... Wocket™ smart wallet at CES 2015 in Las Vegas ... the "11 Hot Products at CES" in a review published in Wired.com, ... Newseveryday.com and "The top 10 gadgets from CES 2015" by Danny ...
(Date:1/22/2015)... NEW YORK , Jan. 22, 2015   EyeLock, Inc. ... announced it has appointed Steve Gerber to the ... Gerber will be responsible for leading development of mobile platforms ... 25 years of success and innovation in the semiconductor industry ...
(Date:12/22/2014)... , Dec. 22, 2014  The 2014 Holiday Season may ... Acuity Market Intelligence reports that the long anticipated floodgates ... that intensifying demand for smart phones, tablets, and wearable ... market of 2.5 billion users with nearly 4.8 billion ...
Breaking Biology News(10 mins):CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 2First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2
... A team composed of Harvard students and alumni was ... 2008 Development Marketplace competition, held in Accra, Ghana from ... cell-based lighting systems suitable for Sub-Saharan Africa, netted the ... Bank, as only 26 percent of Africas population has ...
... Its a paradox that has confounded evolutionary biologists since ... Since parasites depend on their hosts for survival, why do ... Emory University study of monarch butterflies and the microscopic parasites ... strike a middle ground between the benefits gained by reproducing ...
... a stalwart stand-in for humans in medical research, thanks ... genes may behave differently in mouse and man, a ... and Jianzhi Zhang reveals. Their results, which have ... human disease, appear in the current issue of the ...
Cached Biology News:Undergraduates develop 'dirt-powered' microbial fuel cells to light Africa 2Undergraduates develop 'dirt-powered' microbial fuel cells to light Africa 3Monarch butterflies help explain why parasites harm hosts 2Monarch butterflies help explain why parasites harm hosts 3Mouse can do without man's most treasured genes 2Mouse can do without man's most treasured genes 3
... ErbB 2 - BSA and Azide ... tested applications). Antigen: ... KLH, corresponding to C terminal amino ... Entrez GeneID: 2064 ...
SHP-2 Antibody...
Sheep polyclonal to ErbB 2 ( Abpromise for all tested applications). Antigen: Recombinant full length c-ErbB2 protein (Human). Entrez GeneID: 2064 Swiss Protein ID: P04626...
Mouse monoclonal [RIZ1723] to PRDM2/RIZ...
Biology Products: