Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Fast-acting, color-changing molecular probe senses when a material is about to fail

Beckman Institute director Jeffrey Moore, left, postdoctoral researcher Hai Qian and materials science and engineering head Nancy Sottos led a team of Illinois engineers in the development of a new rapid-acting, reversible polymer that changes color when it is about to fail.     

Photo by L. Brian Stauffer
Beckman Institute director Jeffrey Moore, left, postdoctoral researcher Hai Qian and materials science and engineering head Nancy Sottos led a team of Illinois engineers in the development of a new rapid-acting, reversible polymer that changes color when it is about to fail. Photo by L. Brian Stauffer

Abstract:
Materials that contain special polymer molecules may someday be able to warn us when they are about to fail, researchers said. Engineers at the University of Illinois Urbana-Champaign have improved their previously developed force-sensitive molecules, called mechanophores, to produce reversible, rapid and vibrant color change when a force is applied.

Fast-acting, color-changing molecular probe senses when a material is about to fail

Champaign, IL | Posted on March 25th, 2021

“The color change is the result of stress applied to the bonds that connect the mechanophores to a polymer chain,” Qian said. “We are now bonding the mechanophores to polymer chains using a different arrangement scheme, called an oxazine structure. The new structure allows for an instantaneous and reversible color change, so instead of the polymer slowly becoming darker over time, the color changes quickly when the force is applied and disappears when the force is removed.”

Materials that contain the new mechanophores could be used as stress sensors to enable researchers to study the effects of stress on materials before they fail.

“The rapid response and reversibility will allow engineers to better monitor, quickly detect and respond rapidly to an overstressed structure in the lab and eventually in the field,” Sottos said.

A long-standing challenge in materials science has been making observations regarding mechanical load and other stresses in materials at the single-molecule level. Although this advancement cannot do this, Moore says the goal is nearer with the development of this new type of mechanophores.

“There is more work to do, but this advancement opens the door to detailed insight of what’s going on at the molecular level in all sorts of materials,” Moore said. “In the area of biomechanics, for example, we see this research as a steppingstone toward better monitoring of how our bodies react to external forces from the cellular level and beyond.”

Illinois graduate students Doug Ivanoff and Abigail Halmes and undergraduate student Nathan Purwanto also participated in the study.

The Air Force Office of Scientific Research Center of Excellence supported the research.

Moore also is affiliated with the Center for Advanced Study, the Materials Research Laboratory, the Carl R. Woese Institute for Genomic Biology, the Carle Illinois College of Medicine, chemistry and materials science and engineering. Sottos also is affiliated is CAS, MRL, the Beckman Institute, mechanical engineering and science and aerospace.

####

For more information, please click here

Contacts:
LOIS YOKSOULIAN
PHYSICAL SCIENCES EDITOR
217-244-2788


Jeffrey Moore
217-244-5289


Nancy Sottos
217-333-1041

Copyright © University of Illinois at Urbana-Champaign

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

The paper “Fast, reversible mechanochromism of regioisomeric oxazine mechanophores: Developing in situ responsive force probes for polymeric materials” is available online and from the U. of I. News Bureau. DOI: 10.1016/j.chempr.2021.02.014:

Related News Press

News and information

Daikin Industries becomes OCSiAl shareholder July 27th, 2021

The National Space Society Congratulates Blue Origin and Jeff Bezos for the Spectacular First Crewed Flight of the New Shepard: Well-Tested Suborbital Tourist Rocket Soars to 63 Miles; Opens New Frontiers July 21st, 2021

Unconventional superconductor acts the part of a promising quantum computing platform: If it looks like a duck, swims like a duck and quacks like a duck, then it probably is a duck. July 16th, 2021

Unlocking efficient light-energy conversion with stable coordination nanosheets: Scientists design a high-performance, self-powered, UV photodetector using 2D nanosheets that show record photocurrent stability under air exposure July 16th, 2021

Primers with graphene nanotubes offer a new solution for electrostatic painting of automotive parts July 16th, 2021

Videos/Movies

Scientists create rechargeable swimming microrobots using oil and water July 16th, 2021

Scientists take first snapshots of ultrafast switching in a quantum electronic device: They discover a short-lived state that could lead to faster and more energy-efficient computing devices July 16th, 2021

Rice lab peers inside 2D crystal synthesis: Simulations could help molecular engineers enhance creation of semiconducting nanomaterials June 11th, 2021

Govt.-Legislation/Regulation/Funding/Policy

The virus trap: Hollow nano-objects made of DNA could trap viruses and render them harmless July 16th, 2021

Scientists create rechargeable swimming microrobots using oil and water July 16th, 2021

Scientists take first snapshots of ultrafast switching in a quantum electronic device: They discover a short-lived state that could lead to faster and more energy-efficient computing devices July 16th, 2021

Stress-free path to stress-free metallic films paves the way for next-gen circuitry: Optimized sputtering technique helps minimize stress in tungsten thin films July 4th, 2021

Possible Futures

Daikin Industries becomes OCSiAl shareholder July 27th, 2021

The National Space Society Congratulates Blue Origin and Jeff Bezos for the Spectacular First Crewed Flight of the New Shepard: Well-Tested Suborbital Tourist Rocket Soars to 63 Miles; Opens New Frontiers July 21st, 2021

Scientists take first snapshots of ultrafast switching in a quantum electronic device: They discover a short-lived state that could lead to faster and more energy-efficient computing devices July 16th, 2021

Researchers discover a new inorganic material with lowest thermal conductivity ever reported July 16th, 2021

Nanomedicine

The virus trap: Hollow nano-objects made of DNA could trap viruses and render them harmless July 16th, 2021

NYUAD study maps nanobody structure, leading to new ways to potentially fight diseases July 4th, 2021

Optical tweezer technology tweaked to overcome dangers of heat June 25th, 2021

Arrowhead Presents Preclinical Data on ARO-DUX4 at FSHD Society International Research Congress June 25th, 2021

Discoveries

Repairs using light signals: FAU research group develops smart microparticle that identifies defective parts in electrical appliances July 16th, 2021

Removing the lead hazard from perovskite solar cells July 16th, 2021

Scientists create rechargeable swimming microrobots using oil and water July 16th, 2021

Scientists take first snapshots of ultrafast switching in a quantum electronic device: They discover a short-lived state that could lead to faster and more energy-efficient computing devices July 16th, 2021

Materials/Metamaterials

Unconventional superconductor acts the part of a promising quantum computing platform: If it looks like a duck, swims like a duck and quacks like a duck, then it probably is a duck. July 16th, 2021

Researchers discover a new inorganic material with lowest thermal conductivity ever reported July 16th, 2021

Primers with graphene nanotubes offer a new solution for electrostatic painting of automotive parts July 16th, 2021

Stress-free path to stress-free metallic films paves the way for next-gen circuitry: Optimized sputtering technique helps minimize stress in tungsten thin films July 4th, 2021

Announcements

Daikin Industries becomes OCSiAl shareholder July 27th, 2021

The National Space Society Congratulates Blue Origin and Jeff Bezos for the Spectacular First Crewed Flight of the New Shepard: Well-Tested Suborbital Tourist Rocket Soars to 63 Miles; Opens New Frontiers July 21st, 2021

Scientists take first snapshots of ultrafast switching in a quantum electronic device: They discover a short-lived state that could lead to faster and more energy-efficient computing devices July 16th, 2021

Researchers discover a new inorganic material with lowest thermal conductivity ever reported July 16th, 2021

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

RUDN University chemists obtained an unusual planar nickel complex exhibiting magnetic properties July 16th, 2021

Repairs using light signals: FAU research group develops smart microparticle that identifies defective parts in electrical appliances July 16th, 2021

Scientists create rechargeable swimming microrobots using oil and water July 16th, 2021

Scientists take first snapshots of ultrafast switching in a quantum electronic device: They discover a short-lived state that could lead to faster and more energy-efficient computing devices July 16th, 2021

Military

‘Flashed’ nanodiamonds are just a phase: Rice produces fluorinated nanodiamond, graphene, concentric carbon via flash Joule heating June 23rd, 2021

Novel liquid crystal metalens offers electric zoom June 17th, 2021

Magnetism drives metals to insulators in new experiment: Study provides new tools to probe novel spintronic devices June 4th, 2021

Implantable 'living pharmacy' could control body's sleep/wake cycles: Project receives DARPA contract worth up to $33 million over 4 1/2 years May 13th, 2021

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project