New Study Shows Nickel Graphene Can Be Tuned for Optimal Fracture Strength

Arun Nair
University Relations

Arun Nair

FAYETTEVILLE, Ark. – In a new computational study published in The Journal of The Minerals, Metals & Materials Society, University of Arkansas engineering researchers found that nanocomposites composed of layers of nickel and graphene — a promising new material for flexible electronics devices — can be tuned for optimal fracture strength by manipulating the structural arrangement of the graphene sheets.

The study was conducted by Scott Muller, mechanical engineering graduate student, and Arun Nair, assistant professor of mechanical engineering.

Discovered in 2004, graphene is one of the strongest, lightest and most conductive materials known. It is 100 times stronger than steel. When incorporated in to a metal matrix, these properties can lead to stronger and yet lighter materials, such as those used on automobiles.

When combined with a metal such as nickel, graphene's superior mechanical properties make it an excellent candidate for a nanocomposite fiber material to be used in flexible electronic devices and other technologies. Nickel is often used in metal-graphene nanocomposite research because graphene sticks strongly to its surface.

Muller and Nair simulated a graphene sheet embedded within a nickel matrix. A crack was built into the nickel matrix, and then they tested different distances between the graphene and the crack. When the distance between the graphene and the crack was large, the nanocomposite proved more resistant to deformation. They also found that graphene acted as an effective barrier to deformations in the metal, ensuring that failure in one part of the metal would not carry over past the graphene sheet.

-30-

Contacts

Arun Nair, assistant professor
mechanical engineering
479-575-2573, nair@uark.edu

Headlines

School of Art Launches Master of Arts in Art History Graduate Program

The art history M.A. degree is an accredited two-year program in partnership with Crystal Bridges Museum and specializes in studying the arts of the Americas.  

Graduate School Awards Outstanding Faculty Mentor, Master's Thesis Awards

Kaleb Turner was honored for his master's thesis, which looked at resilience during the pandemic, and Mike Richardson was honored for their success in mentoring graduate students.

Research Technologist Named Engineering Employee of the Quarter

Jason Crawley, a scientific research technologist with the Department of Computer Science and Computer Engineering, has been selected Employee of the First Quarter for the College of Engineering.

UAPD's SafeZone Mobile App Adds CAPS Services and SEAR Resources to Promote Well-Being

The UAPD's SafeZone Mobile Safety App launched its "Wellbeing" function on Monday, bringing the services and resources of the Counseling and Pschological Services program closer to you.

U of A Speech and Debate Succeeds in Last Tournament of Semester

The students Daisy Rehbock, Luke Hubbard, Megan Dial, Hadley Adkison, Jaci Sabatini, Luke Thurmon, Jacob Hurbanek and Max Green all succeeded in winning at least one round.

News Daily