Navigation Links
Understanding interface properties of graphene paves way for new applications
Date:8/6/2013

Researchers from North Carolina State University and the University of Texas have revealed more about graphene's mechanical properties and demonstrated a technique to improve the stretchability of graphene developments that should help engineers and designers come up with new technologies that make use of the material.

Graphene is a promising material that is used in technologies such as transparent, flexible electrodes and nanocomposites. And while engineers think graphene holds promise for additional applications, they must first have a better understanding of its mechanical properties, including how it works with other materials.

"This research tells us how strong the interface is between graphene and a stretchable substrate," says Dr. Yong Zhu, an associate professor of mechanical and aerospace engineering at NC State and co-author of a paper on the work. "Industry can use that to design new flexible or stretchable electronics and nanocomposites. For example, it tells us how much we can deform the material before the interface between graphene and other materials fails. Our research has also demonstrated a useful approach for making graphene-based, stretchable devices by 'buckling' the graphene."

The researchers looked at how a graphene monolayer a layer of graphene only one atom thick interfaces with an elastic substrate. Specifically, they wanted to know how strong the bond is between the two materials because that tells engineers how much strain can be transferred from the substrate to the graphene, which determines how far the graphene can be stretched.

The researchers applied a monolayer of graphene to a polymer substrate, and then stretched the substrate. They used a spectroscopy technique to monitor the strain at various points in the graphene. Strain is a measure of how far a material has stretched.

Initially, the graphene stretched with substrate. However, while the substrate continued to stretch, the graphene eventually began to stretch more slowly and slide on the surface instead. Typically, the edges of the monolayer began to slide first, with the center of the monolayer stretching further than the edges.

"This tells us a lot about the interface properties of the graphene and substrate," Zhu says. "For the substrate used in this study, polyethylene terephthalate, the edges of the graphene monolayer began sliding after being stretched 0.3 percent of its initial length. But the center continued stretching until the monolayer had been stretched by 1.2 to 1.6 percent."

The researchers also found that the graphene monolayer buckled when the elastic substrate was returned to its original length. This created ridges in the graphene that made it more stretchable because the material could stretch out and back, like the bellows of an accordion. The technique for creating the buckled material is similar to one developed by Zhu's lab for creating elastic conductors out of carbon nanotubes.


'/>"/>

Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University
Source:Eurekalert

Related biology technology :

1. Smaller and more powerful electronics requires the understanding of quantum jamming physics
2. Drexels Gogotsi and team advance understanding of energy storage mechanisms in Nature Materials
3. Scientists gain new understanding of Alzheimers trigger
4. Study improves understanding of surface molecules in controlling size of gold nanoparticles
5. Scientists gain understanding of self-cleaning gecko foot hair
6. "Biological Control Industry Overview: Companies & Products" Edition 2 is Here. Critical information for Understanding the Global Biopesticide/Biocontrol Market
7. Human Research Protection and Understanding the Landscape of AAHRPP Accreditation
8. Genomic Health Announces Results from Two Studies Demonstrating Innovations in Next Generation Sequencing From Paraffin Tissue, Enhancing Understanding of Tumor Biology
9. Kitware to Develop an In Situ Cosmology Analysis Framework for Increased Understanding of the Universe
10. Study led by GW professor provides better understanding of waters freezing behavior at nanoscale
11. Understanding the molecular mechanisms underlying Alzheimers disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/27/2017)... -- DarioHealth Corp. (NASDAQ: DRIO), a leading global digital ... today announced that it is now offering a 3 ... who want to have their DarioHealth products reimbursed by ... agreements with partners across the U.S. who will be ... will supply and bill the customer,s insurance for their ...
(Date:3/24/2017)... 24, 2017 MiMedx Group, Inc. (NASDAQ: MDXG), ... placental tissue allografts and patent-protected processes to develop and ... healthcare, announced today  that it will present at the ... , NY.  Parker H. "Pete" Petit, Chairman and CEO, ... Christopher M. Cashman , EVP and Chief Commercialization Officer, ...
(Date:3/24/2017)... Research and Markets has announced the addition of the ... report to their offering. ... This report analyzes the Global market for Human ... forecasts are provided for the period 2014 through 2022. Market data ... The report profiles 25 companies including many key and niche ...
(Date:3/24/2017)... NEW YORK , March 24, 2017 ... Composite ended the trading session at 5,817.69, down 0.07%; ... finish at 20,656.58; and the S&P 500 closed at ... session as 4 sectors closed in green, 4 sectors ... the day. This Friday, Stock-Callers.com has initiated reports coverage ...
Breaking Biology Technology:
(Date:3/9/2017)... Australia , March 9, 2017 ... the prestigious World Lung Imaging Workshop at the University ... , was invited to deliver the latest data to ... globally recognised event brings together leaders at the forefront ... developments in lung imaging. "The quality ...
(Date:3/2/2017)... Summary This report provides all the information you ... activities since 2010. ... Read the full report: http://www.reportlinker.com/p03605615-summary/view-report.html ... an in-depth insight into the partnering activity of one of ... company reports are prepared upon purchase to ensure inclusion of ...
(Date:2/28/2017)... , Feb. 28, 2017   Acuant , ... software globally, announces significant enhancements to new and core ... 2016. New products include mobile and desktop Acuant FRM ... TM - a real time manual review of ... idScanĀ® technology provides the fastest and most accurate capture ...
Breaking Biology News(10 mins):