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:8/14/2017)... ... August 14, 2017 , ... Every year, millions ... in the antibody community have recently come together to address this antibody crisis ... laboratory. , The team at Thermo Fisher Scientific has ...
(Date:8/11/2017)... , Aug. 11, 2017  Market ... New York Times article regarding the telemedicine ... according to Kalorama Information.  The article, ... for That"  used information from Kalorama ... Monitoring & Telemedicine Market  (Sleep, Diabetes, ...
(Date:8/11/2017)... ... August 11, 2017 , ... “There is ... more natural alternatives to synthetic ingredients,” said Matt Hundt, President of Third Wave ... established manufacturing presence and know-how of Biorigin will allow us to bring truly ...
(Date:8/10/2017)... , ... August 09, 2017 , ... ... medicine applications in the clinic is here. The team at Capricor Therapeutics, Inc. ... conditioned medium for clinical studies. , Dr. Travis Antes, head of analytical ...
Breaking Biology Technology:
(Date:4/3/2017)... , April 3, 2017  Data captured ... engineering platform, detected a statistically significant association ... prior to treatment and objective response of ... potential to predict whether cancer patients will ... treatment, as well as to improve both pre-infusion ...
(Date:3/29/2017)... CHICAGO , March 29, 2017  higi, the ... ecosystem in North America , today ... Partners and the acquisition of EveryMove. The new investment ... extensive set of tools to transform population health activities ... and lifestyle data. higi collects and secures ...
(Date:3/24/2017)... 24, 2017 Research and Markets has announced ... Analysis & Trends - Industry Forecast to 2025" report to ... The ... a CAGR of around 15.1% over the next decade to reach ... analyzes the market estimates and forecasts for all the given segments ...
Breaking Biology News(10 mins):