Navigation Links
Scientists show there's nothing boring about watching paint dry
Date:8/10/2010

New Haven, Conn.It turns out that watching paint dry might not be as boring as the old adage claims. A team led by Yale University researchers has come up with a new technique to study the mechanics of coatings as they dry and peel, and has discovered that the process is far from mundane.

In the August 9-13 edition of the Proceedings of the National Academy of Sciences, the team presents a new way to image and analyze the mechanical stress that causes colloidal coatingsthose in which microscopic particles of one substance are dispersed throughout anotherto peel off of surfaces.

Understanding how and why coatings fail has broad applications in the physical and biological sciences, said Eric Dufresne, the John J. Lee Associate Professor of Mechanical Engineering at Yale and lead author of the study.

"Coatings protect almost every surface you encounter, from paint on a wall to Teflon on a frying pan to the skin on our own bodies. When coatings peel and crack they put the underlying material at risk," Dufresne said. "Our research is aimed at pinpointing the failure of coatings. We've developed this new technique to zoom in on coatings and watch them fail at the microscopic level."

To visualize the microscopic motion of paint in 3D, the team mixed in tiny fluorescent particles that glow when illuminated by a laser. By tracing the motion of these particles over time with a microscope, they captured the motion of the paint as it peeled and dried in detail.

In addition, the team was able to track the 3-D forces generated by the paint as it dried, producing a "stress map" of the mechanical deformation of the coating as it failed. "The trick was to apply the paint to a soft surface, made of silicone rubber, that is ever so slightly deformed by the gentle forces exerted by the drying paint," Dufresne said.

Although the current study focuses on colloidal coatings, the technique could be applied to all kinds of coatings, Dufresne said. Next, the team hopes to improve on current methods for mitigating peeling in a wide range of coatings.

"This is a completely new way of looking at a very old problem."


'/>"/>

Contact: Suzanne Taylor Muzzin
suzanne.taylormuzzin@yale.edu
203-432-8555
Yale University
Source:Eurekalert  

Related biology news :

1. The jellyfish-like salp: Most efficient filter-feeder in the deep, scientists discover
2. UCLA scientists map all mammalian gene interactions
3. Scientists find new evidence of genetically modified plants in the wild
4. Scientists find the first evidence of genetically modified plants in the wild
5. Scientists develop sustainable, environmentally friendly potting medium
6. Scientists unlock secret of rabies transmission in bats
7. Ancient blob-like creature of the deep revealed by scientists
8. Scientists at University of Colorado Anschutz Medical Campus discover new fat cell
9. Scientists discover how neuroglobin protects against Alzheimers
10. Scientists target possible cause of 1 form of bowel disease
11. Ecological scientists assess the fundamentals of animal behavior
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists show there's nothing boring about watching paint dry
(Date:4/24/2017)... -- Janice Kephart , former 9/11 Commission ... LLP (IdSP) , today issues the following statement: ... 6, 2017 Executive Order: Protecting the Nation ... instilled with greater confidence, enabling the reactivation of ... are suspended by until at least July 2017). ...
(Date:4/18/2017)... Calif. , April 18, 2017  Socionext Inc., a global ... of a media edge server, the M820, which features the company,s ... recognition software provided by Tera Probe, Inc., will be showcased during ... at the NAB show at the Las Vegas ... ...
(Date:4/13/2017)... UBM,s Advanced Design and Manufacturing event in ... and evolving technology through its 3D Printing and Smart ... the expo portion of the event and feature a ... on trending topics within 3D printing and smart manufacturing. ... will take place June 13-15, 2017 at the Jacob K. ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... At ... Purple announced Dr. Suneel I. Sheikh, the co-founder, CEO and chief research scientist ... has been selected for membership in ARCS Alumni Hall of Fame . ...
(Date:10/11/2017)... ... 2017 , ... Personal eye wash is a basic first aid supply for any work environment, ... eye do you rinse first if a dangerous substance enters both eyes? It’s one less ... with its unique dual eye piece. , “Whether its dirt and debris, or an acid ...
(Date:10/11/2017)... , ... October 11, 2017 , ... ... announced today it will be hosting a Webinar titled, “Pathology is going digital. ... Associates , on digital pathology adoption best practices and how Proscia improves lab ...
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017 /PRNewswire/ ... London (ICR) and University of ... tool to risk-stratify patients with multiple myeloma (MM), in a ... . The University of Leeds is ... Myeloma UK, and ICR will perform the testing services to ...
Breaking Biology Technology: