HOME >> BIOLOGY >> NEWS
The seashell's inner beauty

ARLINGTON, Va. -- There is more to mother-of-pearl than good looks. Also called nacre, the gleaming, white material is renowned in scientific circles for its strong, yet flexible, properties. Now researchers have developed a nanoscale, layered material that comes close to nacre's properties, including its iridescence. The ability to nanomanufacture artificial nacre may provide lightweight, rigid composites for aircraft parts, artificial bone and other applications.

Reporting online in Nature Materials on May 25, Nicholas Kotov and his colleagues at Oklahoma State University and at Digital Instruments/Veeco describe their method for creating nacre-like material that consists of alternating layers of clay and a type of polymer called a polyelectrolyte. Kotov received a National Science Foundation (NSF) CAREER Award to pursue the work.

"The discovery allows researchers to tailor flexible materials to a given application--to get the tough materials that nature has been able to produce," said Lynn Schneemeyer, the NSF program officer who oversees Kotov's award. NSF is an independent federal agency that supports fundamental research and education across all fields of science and engineering.

Natural nacre owes much of its strength and flexibility to an internal brick-like structure. Protein layers only nanometers (billionths of a meter) thick provide the pliable "mortar," while calcium carbonate, the principal chemical in limestone and antacids, comprises the similarly miniscule "bricks" adding hardness.

In the artificial nacre, platelets of a negatively-charged clay called montmorillonite provide the bricks while fibers of a positively-charged polyelectrolyte called poly(diallydimethylammonium) chloride (PDDA) serve as the mortar. The opposite charges help the two components bond tightly to form the nacre structure.

"The combination of montmorillonite and PDDA for nacre modeling came to us quite naturally," said Kotov
'"/>

Contact: Josh Chamot
jchamot@nsf.gov
703-292-7730
National Science Foundation
27-May-2003


Page: 1 2

Related biology news :

1. Secretary of Energy announces seven E.O. Lawrence Award Winners
2. Reducing allergens in the home helps inner-city children with asthma
3. Winner of 2004 EMBO Science Writing Prize announced
4. APS announces the winners of its 2004 postdoctoral fellowship in physiological genomics
5. Fox Chase Cancer Centers Alfred Knudson Jr. named 2004 Kyoto Prize winner
6. 2004 BP Conservation Programme winners pave the way for protecting wildlife
7. 2004 Wistar Institute Science Journalism Award winners announced
8. Spying on the inner life of a cell - new nanosensors a body can live with
9. Key gene identified for development of inner-ear structure required for balance
10. RNA inner workings partly unveiled in Stanford study
11. AGI announces the winners of Earth Science Week 2003 contests

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The seashell inner beauty

(Date:2/5/2015)... 28, 2015 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile commerce ... Global Online CEO Conference on January 29 th ... Pereira , CEO of NXT-ID will present and host ... Wocket smart wallet and its full suite of biometric ...
(Date:2/5/2015)... , Jan. 30, 2015  It is gratifying ... power and potential for genomic science as a means ... disease prevention and treatment.  I was honored to participate ... government-funded precision medicine program. Since the ... science of genomics—from the first sequenced genome of a ...
(Date:1/22/2015)... and Markets ( http://www.researchandmarkets.com/research/4trb7t/biometrics_a ) has announced the ... report to their offering. , The ... individual is who she/he is claiming to be, and for ... unique physical characteristics, such as fingerprint, hand or palm print, ...
Breaking Biology News(10 mins):CEO of NXT-ID, Inc. to Discuss Company's Biometric Technologies at RedChip Online Conference January 29th 2CEO of NXT-ID, Inc. to Discuss Company's Biometric Technologies at RedChip Online Conference January 29th 3J. Craig Venter, Ph.D., Co-Founder and CEO, Human Longevity, Inc. (HLI) Participates in White House Precision Medicine Event 2Biometrics - A Global Market Overview 2Biometrics - A Global Market Overview 3
(Date:3/3/2015)... Experts and industry insiders from around the ... Alltech REBELation exploring innovation, inspiration and world-changing ideas in ... 31st year, Alltech’s annual international conference traditionally draws more ... to join the REBELation at an extra discount registration ... at which point the standard early registration rate will ...
(Date:3/3/2015)... 2015 /CNW/- SQI Diagnostics Inc. (TSX:V: SQD), a life sciences ... products for advanced microarray diagnostics, today announced it ... its Management team. In his capacity as CFO ... from a development stage to a commercially successful ... Company,s capital market strategy and to secure funding ...
(Date:3/3/2015)... 3, 2015  Regenicin, Inc. (OTC Bulletin Board: ... development of and commercialization of regenerative cell therapies to ... today that it has received the final payment to ... Inc. (OTC Bulletin Board: AMBS ). ... the final payments due to Regenicin in the amount ...
(Date:3/3/2015)... ROCKVILLE, Md. , March 3, 2015  RegeneRx ... an editorial in the scientific journal, Expert Opinion ... and his colleague, Dr. Zhenggang Zhang , at ... reported that Thymosin beta 4 (TB4) has ... (PNS) remodeling 24 hours or more post-injury, leading to ...
Breaking Biology Technology:World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 2World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 3World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 4SQI Diagnostics Appoints Chief Financial Officer 2SQI Diagnostics Appoints Chief Financial Officer 3Regenicin (RGIN) Receives $2.3 Million in Final Payment from Amarantus 2Regenicin (RGIN) Receives $2.3 Million in Final Payment from Amarantus 3Researchers at Henry Ford Hospital Propose Thymosin Beta 4 as Novel Way to Treat Neural Injury and Neurodegenerative Diseases 2Researchers at Henry Ford Hospital Propose Thymosin Beta 4 as Novel Way to Treat Neural Injury and Neurodegenerative Diseases 3
Cached News: