Navigation Links
The fantastic armor of a wonder snail
Date:1/19/2010

Deep within the Kairei Indian hydrothermal vent field, two-and-one-half miles below the central Indian Ocean, scientists have discovered a gastropod mollusk, whose armor could improve load-bearing and protective materials in everything from aircraft hulls to sports equipment.

Researchers at the National Science Foundation-supported Materials Research Science and Engineering Center at the Massachusetts Institute of Technology are studying the mollusk's physical and mechanical properties. A report, "Protection mechanisms of the iron-plated armor of a deep sea hydrothermal vent gastropod," appears this week in the Proceedings of the National Academy of Sciences.

The so-called "scaly-foot gastropod," has a unique tri-layered shell that may hold insights for future mechanical design principles. Specifically, it has a highly calcified inner layer, a thick organic middle layer. But, it's the extraordinary outer layer fused with granular iron sulfide that excites researchers.

The Kairei Indian vent field is a series of deep gashes in the planet's surface along a volcanic mountain chain below the Indian Ocean. There, researchers on an expedition discovered the never before seen snail in 1999.

"Hydrothermal vent fluids possess high concentration of sulfides and metals, but this mollusk is unique in that it incorporates materials plentiful to vent field into its shell structure," said MIT project leader Christine Ortiz at MIT's Department of Materials Science and Engineering. "We were interested in looking at the structure and properties of the individual layers and seeing how they behave mechanically," she said noting that the mollusk's organic inner layer is also interesting.

In particular researchers set out to discover what advantages the structure holds for protection against penetrating attacks from predators. Understanding this can give them new ideas for materials that may be used for cars, trucks and military applications.

To test the shell's properties, researchers performed experiments that simulated generic predatory attacks using both computer models and indentation testing. The indentation testing involved hitting the top of shells with the sharp tip of a probe to measure the shell's hardness and stiffness.

A number of potential predators were found in the same region as the scaly-foot gastropod. One predator, the cone snail, uses a harpoon-like tooth to attempt penetration of before injecting it with paralyzing venom. Additionally, sea-faring crabs are known to grab gastropods within their claws and attempt to puncture their shells and/or squeeze them sometimes for days until the mollusks' shells break.

The testing led to a "realization that each layer of the (mollusk's) exoskeleton is responsible for distinct and multifunctional roles in mechanical protection," Ortiz and her colleagues write in the report. The testing reveals that the shell is "advantageous for penetration resistance, energy dissipation, mitigation of fracture and crack arrest, reduction of back deflections, and resistance to bending and tensile loads."

Our study suggests that the scaly-foot gastropod undergoes very different deformation and protection mechanisms compared to other gastropods," said Ortiz. "It is very efficient in protection, more so than the typical mollusk."


'/>"/>

Contact: Bobbie Mixon
bmixon@nsf.gov
703-292-8070
National Science Foundation
Source:Eurekalert  

Related biology news :

1. Fantastic photographs of fluorescent fish
2. Boston University biomedical engineers find chink in bacterias armor
3. When our protective armor shows weakness
4. Armored fish study helps strengthen Darwins natural selection theory
5. In the war against diseases, nerve cells need their armor
6. Researchers find chink in the armor of viral tummy bug
7. National Institutes of Health Secures Armory with Patent-Pending Technology
8. Making sure the wonder materials dont become the wonder pollutant
9. Wonderful cheese is all in the culture
10. The wonders of wine
11. Chemistry makes the natural wonder fabric -- wool -- more wonderful
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The fantastic armor of a wonder snail
(Date:5/16/2016)... YORK , May 16, 2016   EyeLock ... solutions, today announced the opening of an IoT Center ... to strengthen and expand the development of embedded iris ... an unprecedented level of convenience and security with unmatched ... authenticate one,s identity aside from DNA. EyeLock,s platform uses ...
(Date:5/9/2016)... DUBAI , UAE, May 9, 2016 ... choice when it comes to expanding freedom for high ... Even in today,s globally connected world, there ... online conferencing system could ever duplicate sealing your deal ... are obtaining second passports by taking advantage of citizenship ...
(Date:4/28/2016)... , April 28, 2016 Infosys ... (NYSE: INFY ), and Samsung SDS, a global ... that will provide end customers with a more secure, fast ...      (Logo: http://photos.prnewswire.com/prnh/20130122/589162 ) , ... but it also plays a fundamental part in enabling and ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... GUELPH, ON , June 27, 2016 /PRNewswire/ - BIOREM ... it has been advised by its major shareholders, Clean ... LP, United States based venture ... common shares of Biorem (on a fully diluted, as ... for the disposition of their entire equity holdings in ...
(Date:6/27/2016)... (PRWEB) , ... June 27, 2016 , ... ... operations for Amgen, will join the faculty of the University of North ... adjunct professor of strategy and entrepreneurship at UNC Kenan-Flagler, with a focus on ...
(Date:6/24/2016)... ... ... While the majority of commercial spectrophotometers and fluorometers use the z-dimension of ... higher end machines that use the more unconventional z-dimension of 20mm. Z-dimension ... of the cuvette holder. , FireflySci has developed several Agilent flow cell product ...
(Date:6/23/2016)... , June 23, 2016 /PRNewswire/ - FACIT has ... Ontario biotechnology company, Propellon Therapeutics Inc. ... and commercialization of a portfolio of first-in-class WDR5 ... targets such as WDR5 represent an exciting class ... in precision medicine for cancer patients. Substantial advances ...
Breaking Biology Technology: