Navigation Links
Non-toxic hull coating resists barnacles, may save ship owners millions
Date:5/28/2009

North Carolina State University engineers have created a non-toxic "wrinkled" coating for use on ship hulls that resisted buildup of troublesome barnacles during 18 months of seawater tests, a finding that could ultimately save boat owners millions of dollars in cleaning and fuel costs.

The research conducted by Dr. Kirill Efimenko, research assistant professor in the Department of Chemical and Biomolecular Engineering, and Dr. Jan Genzer, professor in the same department, shows for the first time that surface coatings containing nests of different-sized "wrinkles" are effective in preventing barnacles from firmly latching on to the coatings.

"The results are very promising," Efimenko said. "We are dealing with a very complex phenomenon. Living organisms are very adaptable to the environment, so we need to find their weakness. And this hierarchical wrinkled topography seems to do the trick."

Researchers created the coatings by stretching a rubber sheet, applying an ultra-violet ozone treatment to it, and then relieving the tension, causing five generations of "wrinkles" to form concurrently. The coatings were further covered with an ultra-thin layer of semifluorinated material. During ocean tests performed in Wilmington, N.C., the wrinkled materials remained free of barnacles after 18 months of seawater exposure, while flat coatings with the same chemical composition showed barnacle buildup after just one month in seawater.

Engineers and scientists have strived for decades to uncover ways to keep barnacles off ship hulls. Barnacle colonization on a ship bottom increases the ship's "drag" in the water, forcing the engine to burn more fuel to maintain the same speed. After six months in the water, a ship's fuel consumption increases substantially, Efimenko said. That costs ship owners including the military plenty of extra cash.

"It's like running your air conditioner with the windows open," Genzer said.

<
'/>"/>
Contact: Nate DeGraff
nate_degraff@ncsu.edu
919-515-3848
North Carolina State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Pitt researchers create non-toxic clean-up method for potentially toxic nano materials
2. Corrosion-inhibiting coatings containing good bacteria
3. University researchers to develop coatings that kill superbugs
4. Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil
5. New polymer coatings prevent corrosion, even when scratched
6. Nanoscale coating protect products -- and the economy
7. Coating copies microscopic biological surfaces
8. Coating improves electrical stimulation therapy used for Parkinsons, depression, chronic pain
9. Candy-coating keeps proteins sweet
10. Dog owners more likely to share germs with pets by not washing hands than by sleeping with dog
11. Stem cell research to benefit horse owners and trainers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2014)... West Orange, NJ. August 27, 2014. Using functional ... shown differential brain activation patterns between people with ... the first MS study in which brain activation ... cognitive task. The article, "Neuroimaging and cognition using ... was published online on June 11 by ...
(Date:8/27/2014)... have identified a gene that could help scientists engineer ... in the cell membrane of plants that senses changes ... machinery accordingly. , "It,s similar to a thermostat," ... Duke. , The findings, which appear Aug. 28 ... easier to feed the world,s growing population in the ...
(Date:8/27/2014)... of the HIV drug maraviroc, a new study from ... the drug was licensed in 2007, included mostly European-Americans, ... removing maraviroc from the body. The current study shows ... including nearly half of African-Americans end up with ... lack the protein even when given the same dose. ...
Breaking Biology News(10 mins):Kessler Foundation researchers publish first study of brain activation in MS using fNIRS 2Water 'thermostat' could help engineer drought-resistant crops 2Dosage of HIV drug may be ineffective for half of African-Americans 2
... one scratchy tune learned in its youth, which it ... occasionally, the finch might improvise, experimenting with a slower, ... studying the finch now say the improvisation arises from ... section of the forebrain that seems to generate the ...
... in St. Louis have discovered an entirely new cellular ... plant flowering and DNA methylation, a key chemical process ... by Craig Pikaard, Ph, D., Washington University professor of ... kind of RNA polymerase found only in plants and ...
... (CLL) is an incurable disease in which cells in the ... become abnormal and malignant (leukemic). The progression of the disease ... regarding the rate of production of CLL cells, and the ... believed that CLL was a static disease of long-lived lymphocytes ...
Cached Biology News:Bird Brains Show How Trial and Error May Contribute to Learning 2Bird Brains Show How Trial and Error May Contribute to Learning 3New RNA polymerase discovered in plants 2New RNA polymerase discovered in plants 3The very unexpected life and death of a leukemic cell 2
(Date:8/28/2014)... PARK, Calif. , Aug. 28, 2014 /PRNewswire/ ... focused on developing novel mid- to late-stage cardiovascular ... $7.0 million in its first round of financing. ... Biomedical Investments and Hercules Bioventures with participation from ... entrepreneur and pharmaceutical executive, Dr. Larry Hsu ...
(Date:8/28/2014)... Vt. (PRWEB) August 28, 2014 ... testing around the world is available from Strategic ... diagnostics companies. “ Industrial Microbiology Market Review, Fourth ... Industrial Market ” (IMMR—4) tracks and compares microbiology ... in North America, Europe and Asia, and forecasts ...
(Date:8/28/2014)... 2014 Supplementing their complete line ... for Eppendorf Safe Lock Centrifuge Tubes . ... highest quality tubes at an affordable price. Eppendorf ... doing chemical, medical, pharmaceutical, and life science research ... regularly able to afford Eppendorf products. , Eppendorf ...
(Date:8/27/2014)... Green & Grow Inc. (GGI) has ... and secured Otter Capital as a significant new partner. ... of GGI’s Agriplier™ technology, building on recent compelling field ... our first meeting, we have been impressed with Otter ... said Alan Sobba, President and CEO of GGI. “We ...
Breaking Biology Technology:Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 32 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 2Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 3Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 3
... 14 Transgenomic, Inc. (the,"Company") (OTC Bulletin Board: TBIO) ... 2007. The Company,s financial results are,presented in the tables ... reported a net profit of $0.2 million or $0.00 ... to a net loss of $0.4 million or,$0.01 per ...
... Board of Directors,meeting held today, the Directors declared ... dividend is payable on September 14, 2007 to,shareholders ... Sigma-Aldrich: Sigma-Aldrich is a leading Life Science and ... and kits,are used in scientific and genomic research, ...
... Quarter Last Year, - 17 Percent Quarter-to-Quarter Revenue Gain Evidences Start of Turnaround ... for Core Business ... - DelSite Signs Additional Agreements, IRVING, Texas, Aug. 14 Carrington,Laboratories, ... $5.6 million, compared to $6.5 million in the year ago,period. The revenue in the ...
Cached Biology Technology:Transgenomic, Inc. Reports Second Quarter 2007 Results 2Transgenomic, Inc. Reports Second Quarter 2007 Results 3Transgenomic, Inc. Reports Second Quarter 2007 Results 4Transgenomic, Inc. Reports Second Quarter 2007 Results 5Transgenomic, Inc. Reports Second Quarter 2007 Results 6Transgenomic, Inc. Reports Second Quarter 2007 Results 7Transgenomic, Inc. Reports Second Quarter 2007 Results 8Carrington Reports Second Quarter 2007 Results 2Carrington Reports Second Quarter 2007 Results 3Carrington Reports Second Quarter 2007 Results 4Carrington Reports Second Quarter 2007 Results 5Carrington Reports Second Quarter 2007 Results 6Carrington Reports Second Quarter 2007 Results 7
...
cysteine and glycine-rich protein 2,...
... Antitumour agent and DNA-topoisomersae II inhibitor (IC50 = ... C 29 H 32 O 13 ... Store at: RT ... Solubility: Soluble to 100 ...
HSPBP1 Antibody...
Biology Products: