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:5/3/2016)... York, NY (PRWEB) , ... May 03, 2016 ... ... and NeuroTech NYC , the sensor and data driven conferences, will take place ... UnitedHealth's Vidya Raman-Tangella on incorporating technology -- including AR/VR, ...
(Date:5/3/2016)... ... ... According to world renowned prostate cancer surgeon, Dr. David B. Samadi ... main treatment options: surgery or radiation. Based on a patient’s goals, disease state, and ... doctors to administer higher doses of radiation to prostate cancer patients with ...
(Date:5/2/2016)... ... May 02, 2016 , ... Meister Media Worldwide launches its ... and added functionality give the agricultural world a taste of Meister Media Worldwide’s ... agriculture – from precision farming via satellites and Unmanned Aerial Vehicles (UAVs) to ...
(Date:4/29/2016)... ... ... The MIT bioLogic design team has won multiple A' Design Awards ... be applied to fabric and formed into living interfaces between body and environment. They ... The team harvested Natto cells and applied them to fabric with custom 3D printers.The ...
Breaking Biology Technology:
(Date:3/3/2016)... SOTO, Kansas , March 3, 2016 ... Oncimmune,s Early CDT®-Lung, a blood test to aid ... cancer Early CDT®-Lung test to its clients ... Early CDT®-Lung test to its clients which include ... a leader in early cancer detection, today announced a ...
(Date:3/2/2016)... 2, 2016 http://www.researchandmarkets.com/research/cmt3hk/global_biometrics ... "Global Biometrics as a Service Market ... --> http://www.researchandmarkets.com/research/cmt3hk/global_biometrics ) has announced ... as a Service Market 2016-2020" report ... Research and Markets ( http://www.researchandmarkets.com/research/cmt3hk/global_biometrics ) has ...
(Date:3/1/2016)...  (RSAC Booth #3041) – True fraud costs business ... is lost to false positives, where good customers are ... At the RSA Conference 2016, NuData Security is calling for ... by devaluing the data fraudsters have in abundance in ... --> --> Cheap and readily ...
Breaking Biology News(10 mins):