Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > The secret to 3-D graphene? Just freeze it: New study shows how researchers tame the notoriously fickle supermaterial in aerogel form with 3-D printer and ice

3-D graphene created by an international research team led by Unversity at Buffalo engineers.
CREDIT: University at Buffalo.
3-D graphene created by an international research team led by Unversity at Buffalo engineers.

CREDIT: University at Buffalo.

Abstract:
Graphene is a wonder material saddled with great expectations.

Discovered in 2004, it is 1 million times thinner than a human hair, 300 times stronger than steel and it's the best known conductor of heat and electricity. These qualities could, among other things, make computers faster, batteries more powerful and solar panels more efficient.

The secret to 3-D graphene? Just freeze it: New study shows how researchers tame the notoriously fickle supermaterial in aerogel form with 3-D printer and ice

Buffalo, NY | Posted on March 6th, 2016

But the material is tough to manipulate beyond its two-dimensional form.

Recently, scientists poured graphene oxide suspension, a gel-like form of the material, into freezing molds to create 3-D objects. The process works, but only with simple structures that have limited commercial applications.

Another option is to use a 3-D printer. In this scenario, scientists typically mix graphene with a polymer or other thickening agent. This helps keep the structure from falling apart. But when the polymer is removed via thermal process, it damages the delicate structure.

A research team - comprised of engineers from the University at Buffalo, Kansas State University and the Harbin Institute of Technology in China - may have solved that problem.

A study published Feb. 10 in the journal Small describes how the team used a modified 3-D printer and frozen water to create lattice-shaped cubes and a three-dimensional truss with overhangs using graphene oxide. The structures could be an important step toward making graphene commercially viable in electronics, medical diagnostic devices and other industries.

"Graphene is notoriously difficult to manipulate, but the structures we built show that it's possible to control its shape in three-dimensional forms," said Chi Zhou, assistant professor of industrial and systems engineering at UB's School of Engineering and Applied Sciences, and a corresponding author of the study.

Zhou is a member of the Sustainable Manufacturing and Advanced Robotic Technologies (SMART), a UB Community of Excellence launched in 2015; he also is a member of UB's New York State Center of Excellence in Materials Informatics.

In their experiments, the research team mixed the graphene oxide with water. They then printed the lattice framework on a surface of -25°C. The graphene is sandwiched between the layers of frozen ice, which act as a structural support.

After the process is completed, the lattice is dipped in liquid nitrogen, which helps form even stronger hydrogen bonds. The lattice is then placed in a freeze dryer, where the ice is changed into gas and removed. The end result is a complex, three-dimensional structure made of graphene aerogel that retains its shape at room temperature.

"By keeping the graphene in a cold environment, we were able to ensure that it retained the shape we designed. This is an important step toward making graphene a commercially viable material," said Dong Lin, assistant professor of industrial and manufacturing systems engineering at Kansas State University, and the study's other corresponding author.

The researchers plan to build on their findings by investigating how to create aerogel structures formed of multiple materials.

###

First authors of the study are Qiangqiang Zhang, a student at Harbin, and Feng Zhang, a student at UB. Contributing authors are Hui Li, a student at Harbin, and Sai Pradeep Medarametla, a student at Kansas State University.

The research team received support from Mark T. Swihart, UB Distinguished Professor of Chemical and Biological Engineering, and Jonathan F. Lovell, assistant professor of biomedical engineering at UB. Both Swihart and Lovell are faculty members within UB's School of Engineering and Applied Sciences.

####

For more information, please click here

Contacts:
Cory Nealon

716-645-4614

Copyright © University at Buffalo

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

RELATED JOURNAL ARTICLE:

Related News Press

News and information

Let the europium shine brighter January 21st, 2020

Nanotubes may give the world better batteries: Rice U. scientists' method quenches lithium metal dendrites in batteries that charge faster, last longer January 16th, 2020

Quantum physics: Controlled experiment observes self-organized criticality January 16th, 2020

Pretty with a twist: Complex porous, chiral nano-patterns arise from a simple linear building block January 16th, 2020

Graphene/ Graphite

The first highway trials show that nanotube-reinforced asphalt concrete prevents cracks and ruts January 16th, 2020

Generation and Manipulation of spin currents for advanced electronic devices January 9th, 2020

Researchers to develop a theory of transients in graphene: The research considers behavior of graphene in the moment of its transition from the state of thermal equilibrium and the process of returning to this state December 27th, 2019

Saving Moore’s Law: Electrical and computer engineering researchers propose 3D integration with 2D materials December 27th, 2019

3D & 4D printing/Additive-manufacturing

'Buildings' in human bone may hold key to stronger 3D-printed lightweight structures December 6th, 2019

Highest-throughput 3D printer is future of manufacturing: Rapid manufacturing on-demand could put warehouses, molds into the past October 17th, 2019

A swifter way towards 3D-printed organs: Sacrificial ink-writing technique allows 3D printing of large, vascularized human organ building blocks September 6th, 2019

Tiny vibration-powered robots are the size of the world's smallest ant July 19th, 2019

Aerogels

Super-light, super-insulating ceramic aerogel keeps the hottest temperatures at bay February 17th, 2019

Researchers create ultra-lightweight ceramic material that withstands extreme temperatures: UCLA-led team develops highly durable aerogel that could ultimately be an upgrade for insulation on spacecraft February 15th, 2019

Researchers reduce expensive noble metals for fuel cell reactions August 22nd, 2016

Aspen Aerogels to Present at the 28th Annual ROTH Conference March 14th, 2016

Possible Futures

Let the europium shine brighter January 21st, 2020

Study finds billions of quantum entangled electrons in 'strange metal' Physicists provide direct evidence of entanglement's role in quantum criticality January 16th, 2020

Nanotubes may give the world better batteries: Rice U. scientists' method quenches lithium metal dendrites in batteries that charge faster, last longer January 16th, 2020

Researchers gain control over internal structure of self-assembled composite materials January 16th, 2020

Chip Technology

Toward safer disposal of printed circuit boards January 16th, 2020

Generation and Manipulation of spin currents for advanced electronic devices January 9th, 2020

NUS scientists create world’s first monolayer amorphous film January 9th, 2020

Onto Innovation to Present at the 22nd Annual Needham Growth Conference January 3rd, 2020

Discoveries

Let the europium shine brighter January 21st, 2020

Quantum physics: Controlled experiment observes self-organized criticality January 16th, 2020

Pretty with a twist: Complex porous, chiral nano-patterns arise from a simple linear building block January 16th, 2020

Toward safer disposal of printed circuit boards January 16th, 2020

Materials/Metamaterials

Researchers gain control over internal structure of self-assembled composite materials January 16th, 2020

Buckyballs release electron-positron pairs in forward directions: Theoretical calculations reveal that when impacted by positrons of particular energies, spherical nanoparticles release unstable electron-positron pairs, with signals dominating in the same direction as the incomin December 27th, 2019

FEFU scientists participate in development of ceramic materials that are IR-transparent December 27th, 2019

New polymer material may help batteries become self-healing, recyclable December 23rd, 2019

Announcements

Let the europium shine brighter January 21st, 2020

Quantum physics: Controlled experiment observes self-organized criticality January 16th, 2020

Pretty with a twist: Complex porous, chiral nano-patterns arise from a simple linear building block January 16th, 2020

Toward safer disposal of printed circuit boards January 16th, 2020

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

Let the europium shine brighter January 21st, 2020

Quantum physics: Controlled experiment observes self-organized criticality January 16th, 2020

Pretty with a twist: Complex porous, chiral nano-patterns arise from a simple linear building block January 16th, 2020

Toward safer disposal of printed circuit boards January 16th, 2020

Energy

Let the europium shine brighter January 21st, 2020

Gasification goes green: Rice's low-temp photocatalyst could slash the carbon footprint for syngas January 10th, 2020

Color superlensing to assist in surpassing diffraction barrier: A paper by Kazan Federal University's Sergey Kharintsev appeared in Optics Letters January 3rd, 2020

Clusters of gold atoms form peculiar pyramidal shape January 3rd, 2020

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

A new method to study lithium dendrites could lead to better, safer batteries January 10th, 2020

NUS scientists create world’s first monolayer amorphous film January 9th, 2020

Nexeon Updates on SUNRISE Project: Next Generation Battery Materials Project Exceeding Expectations January 6th, 2020

Supercharging tomorrow: Monash develops world's most efficient lithium-sulfur battery January 3rd, 2020

Research partnerships

Study finds billions of quantum entangled electrons in 'strange metal' Physicists provide direct evidence of entanglement's role in quantum criticality January 16th, 2020

Pretty with a twist: Complex porous, chiral nano-patterns arise from a simple linear building block January 16th, 2020

Toward safer disposal of printed circuit boards January 16th, 2020

Researchers gain control over internal structure of self-assembled composite materials January 16th, 2020

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