PaintSquare.com
      | Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise
  

 

Download our free e-book! Protecting and maintaining transmission pipeline

Paint and Coatings Industry News

Main News Page


Feathers Inspire Fade-Free Paint

Friday, March 21, 2014

More items for Coating Materials

Comment | More

When pores on a bird’s feathers flock together, they give Ivy League researchers an idea for paint that never fades.

A group of researchers at the Harvard School of Engineering and Applied Sciences say that creating nanostructured capsules that recreate bird feathers could lead to coatings and LED displays that never lose their hue.

Bird feathers have "structural color," meaning the color is created "when an object's very nanostructure amplifies a specific wavelength," whereas paints and dyes absorb light, the researchers explain.

Pigment in Pore Patterns

Brightly colored bird feathers have tiny pores that are spaced in just the right way to reflect the color. If this pore formation was destroyed, the color would be gone.

Harvard paint research
Jin-Gyu Park via seas.harvard.edu

Researchers want to use manmade materials to imitate pores on bird feathers, hoping to recreate the everlasting color.

Ipso facto, recreating this pore pattern in a different material would produce the same color.

Since some of the structural colors found in nature can last as long as the object, imitating it in manmade materials could result in color that never fades.

"Most color you get in paints, coatings or cosmetics, even, comes from the selective absorption and reflection of light," said Vinothan N. Manoharan, who led a team of Harvard researchers on this project.

"What that means is that the material is absorbing some energy, and that means that over time, the material will fade," Manoharan said.

Taking it to the Lab

The researchers worked to give manmade materials structural color—no easy task, since it usually requires molecules with a very specific crystalline pattern.

However, one bird in particular, the cotinga, has pores that lack a regular order, making it a prime target to mimic.

Gizmodo
Screenshot via Gizmodo.com

One reader chimed in on Gizmodo.com's coverage of the research.

The team created a system where microcapsules are filled with a disordered solution of smaller particles suspended in water. The microcapsules shrink as they dry, bringer the particles closer together, until they eventually are spaced at just the right distance to give off the reflected color from the capsule.

The capsules will change to different colors the more they shrink, the researchers say. Being able to tune these color capsules could lead to a new spectrum of paints, according to Manoharan.

The project expands on 2009 research done at Yale University, which used dried aggregates of solid particles to recreate the cotinga's colors. Jin-Gyu Park did postdoctoral research on the project at Yale, and has now joined Manoharan's group.

The researchers' findings were published in February in the journal Angewandte Chemie.

   

Tagged categories: Color retention; Colorants; Decorative painting; Pigments; Research

Comment Join the Conversation:

Sign in to our community to add your comments.

Jessup Manufacturing Company
More Traction for Extreme Marine Conditions

Jessup Safety Track® 3800 Military Grade peel-and-stick non-skid tapes and treads provide extra slip resistance for decks. MIL-PRF-24467C Type XI, Black & Gray.


Polyval Coatings
Polyflex® Polyurea Linings

Polyflex™ new Polyurea Geotextile Membrane System has been specifically engineered to protect the environment in containment applications.
www.polyflexlinings.com


International Paint LLC
Light Duty Protective Coatings

Check out our expanded line of alkyd, acrylic and waterborne epoxy coatings.


Sherwin-Williams
Sherwin-Williams Protective & Marine Coatings

With 4,000 distribution points and 3,700+ years of experience, Sherwin-Williams delivers the products, support and expertise you need, right where you need it.


PPG Protective and Marine Coatings Group
Industrial strength performance in ONE can.

Now get the durability and protection of two components in one can: Amercoat® ONE, PSX® ONE and Sigmadur ONE.


Carboline Company
Fireproofing Solutions

Pyroclad® X1 Thermo-Lag® Pyrocrete® – protecting against hydrocarbon and jet fires, explosions, and cryogenic spills.


Mitsubishi Gas Chemical America
Performance Amine 1,3-BAC

A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.


Wasser High-Tech Coatings Inc.
Wasser Coatings Protect

Wasser Coatings offer a complete range of Moisture Cure Urethane (NEPCOAT approved) systems in addition to Polyurea membranes and linings(NSF).
www.wassercoatings.com


BASF
New resins from BASF will have metals loving water:

Excellent corrosion resistance, low VOC, high gloss, thin films basf.us/industrialcoatings
polyorders@basf.com
800-231-7868


Novetas Solutions
Number 1 Crushed Glass Abrasive in America!

Manufactured from 100% Recycled Glass.
NO Crystalline Silica,
Beryllium & Arsenic
Great White Metal Finish!
4 plants on Navy QPL
Call us at 866-775-6226

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2015, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com