Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > University of Illinois researchers create 1-step graphene patterning method

a) This is a schematic illustration of the one-step polymer-free approach to fabricate patterned graphene on a flexible substrate. A stencil mask is designed by computer-aided design software and fabricated by a laser cutter. The fabricated mask is aligned on the as-grown CVD graphene on a Cu foil, and the exposed graphene region is removed by oxygen plasma. The patterned graphene is laminated onto a flexible substrate, followed by etching of the copper foil. b) Optical microscope images and photographs of various stencil masks with sophisticated micro-scale features (top row) and corresponding graphene array patterns transferred onto SiO2 substrate and flexible Kapton film (bottom row). All scale bars: 300 μm.
CREDIT: University of Illinois
a) This is a schematic illustration of the one-step polymer-free approach to fabricate patterned graphene on a flexible substrate. A stencil mask is designed by computer-aided design software and fabricated by a laser cutter. The fabricated mask is aligned on the as-grown CVD graphene on a Cu foil, and the exposed graphene region is removed by oxygen plasma. The patterned graphene is laminated onto a flexible substrate, followed by etching of the copper foil. b) Optical microscope images and photographs of various stencil masks with sophisticated micro-scale features (top row) and corresponding graphene array patterns transferred onto SiO2 substrate and flexible Kapton film (bottom row). All scale bars: 300 μm.

CREDIT: University of Illinois

Abstract:
Researchers from the University of Illinois at Urbana-Champaign have developed a one-step, facile method to pattern graphene by using stencil mask and oxygen plasma reactive-ion etching, and subsequent polymer-free direct transfer to flexible substrates.

University of Illinois researchers create 1-step graphene patterning method

Urbana, IL | Posted on April 27th, 2016

Graphene, a two-dimensional carbon allotrope, has received immense scientific and technological interest. Combining exceptional mechanical properties, superior carrier mobility, high thermal conductivity, hydrophobicity, and potentially low manufacturing cost, graphene provides a superior base material for next generation bioelectrical, electromechanical, optoelectronic, and thermal management applications.

"Significant progress has been made in the direct synthesis of large-area, uniform, high quality graphene films using chemical vapor deposition (CVD) with various precursors and catalyst substrates," explained SungWoo Nam, an assistant professor of mechanical science and engineering at Illinois. "However, to date, the infrastructure requirements on post-synthesis processing--patterning and transfer--for creating interconnects, transistor channels, or device terminals have slowed the implementation of graphene in a wider range of applications."

"In conjunction with the recent evolution of additive and subtractive manufacturing techniques such as 3D printing and computer numerical control milling, we developed a simple and scalable graphene patterning technique using a stencil mask fabricated via a laser cutter," stated Keong Yong, a graduate student and first author of the paper, "Rapid Stencil Mask Fabrication Enabled One-Step Polymer-Free Graphene Patterning and Direct Transfer for Flexible Graphene Devices appearing in Scientific Reports.

"Our approach to patterning graphene is based on a shadow mask technique that has been employed for contact metal deposition," Yong added. "Not only are these stencil masks easily and rapidly manufactured for iterative rapid prototyping, they are also reusable, enabling cost-effective pattern replication. And since our approach involves neither a polymeric transfer layer nor organic solvents, we are able to obtain contamination-free graphene patterns directly on various flexible substrates."

Nam stated that this approach demonstrates a new possibility to overcome limitations imposed by existing post-synthesis processes to achieve graphene micro-patterning. Yong envisions this facile approach to graphene patterning sets forth transformative changes in "do It yourself" (DIY) graphene-based device development for broad applications including flexible circuits/devices and wearable electronics.

"This method allows rapid design iterations and pattern replications, and the polymer-free patterning technique promotes graphene of cleaner quality than other fabrication techniques," Nam said. "We have shown that graphene can be patterned into varying geometrical shapes and sizes, and we have explored various substrates for the direct transfer of the patterned graphene."

###

In addition to Nam and Yong, study co-authors include Ali Ashraf and Pilgyu Kang from the Department of Mechanical Science and Engineering at Illinois.

####

For more information, please click here

Contacts:
SungWoo Nam

217-300-0267

Copyright © University of Illinois College of Engineering

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 News Press

News and information

The National Space Society Mourns the Passing of Robert Krone, Founder of the Kepler Space Institute: Krone's Visionary and Humanistic Approach to the Study of Space Communities and Settlement Was Unique September 22nd, 2021

Researchers reveal multi-path mechanism in electrochemical CO2 reduction September 17th, 2021

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

Silver nanoparticles boost performance of microbial fuel cells September 17th, 2021

Graphene/ Graphite

National 2D materials research center wins NSF funding: Boise State joins Penn State, Rice for Phase II expansion of ATOMIC center August 20th, 2021

National 2D materials research center wins NSF funding: Boise State joins Penn State, Rice for Phase II expansion of ATOMIC center August 20th, 2021

From anti-icing coatings to protection of containers with flammable liquids: heating films with graphene nanotubes enter the market August 20th, 2021

Graphene nanotubes revolutionize touch screen use for prosthetic hands August 3rd, 2021

Flexible Electronics

A molecule like a nanobattery: Chemical scientists decipher complex electronic structure of a three-nuclear metallorganic compound with the capacity of donating and receiving multiple electrons June 9th, 2021

Threads that sense how and when you move? New technology makes it possible: Engineers created thread sensors that can be attached to skin to measure movement in real time, with potential implications for tracking health and performance January 29th, 2021

Going Organic: uOttawa team realizing the limitless possibilities of wearable electronics January 28th, 2021

Engineers find antioxidants improve nanoscale visualization of polymers January 8th, 2021

Software

Nanosoft releases nanoCAD Plus 20 as a major update November 20th, 2020

Study: Mapping crystal shapes could fast-track 2D materials: Experts call for global effort to clear hurdles to mass production July 27th, 2020

Oxford Instruments Asylum Research Jupiter XR Large-Sample AFM Now Includes New Ergo Software Interface for Even Greater Productivity June 18th, 2020

Oxford Instruments Asylum Research Announces New “Relate” Software for Correlative Imaging with Atomic Force Microscopy and Electron Microscopy June 12th, 2020

Possible Futures

The National Space Society Mourns the Passing of Robert Krone, Founder of the Kepler Space Institute: Krone's Visionary and Humanistic Approach to the Study of Space Communities and Settlement Was Unique September 22nd, 2021

Ultrasound at the nanometre scale reveals the nature of force September 17th, 2021

A simple way to get complex semiconductors to assemble themselves: Much like crystallizing rock candy from sugar syrup, the new method grows 2D perovskites precisely layered with other 2D materials to produce crystals with a wide range of electronic properties September 17th, 2021

Getting to the root of tooth replantation challenges: Researchers from Tokyo Medical and Dental University (TMDU) report a delivery system that promotes healing in tooth replantation in rats September 17th, 2021

Chip Technology

New physics research reveals fresh complexities about electron behavior in materials September 17th, 2021

A simple way to get complex semiconductors to assemble themselves: Much like crystallizing rock candy from sugar syrup, the new method grows 2D perovskites precisely layered with other 2D materials to produce crystals with a wide range of electronic properties September 17th, 2021

Engineering various sources of loss provides new features for perfect light absorption: "Loss is ubiquitous in nature, and by better understanding it, we make it more useful" September 10th, 2021

Leibniz Prize winner Professor Dr. Oliver G. Schmidt moves to Chemnitz University of Technology: President Professor Dr. Gerd Strohmeier refers to an 'absolute top transfer' September 10th, 2021

Discoveries

The National Space Society Mourns the Passing of Robert Krone, Founder of the Kepler Space Institute: Krone's Visionary and Humanistic Approach to the Study of Space Communities and Settlement Was Unique September 22nd, 2021

Researchers reveal multi-path mechanism in electrochemical CO2 reduction September 17th, 2021

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

Silver nanoparticles boost performance of microbial fuel cells September 17th, 2021

Materials/Metamaterials

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

New substance classes for nanomaterials: Nano spheres and diamond slivers made of silicon and germanium: Potential applications as nano semiconductor materials September 10th, 2021

Patterning silicon at the one nanometer scale: Scientists engineer materials’ electrical and optical properties with plasmon engineering August 13th, 2021

Quantum computing enables unprecedented materials science simulations: Multi-institutional team provides a foundation for unraveling the mysteries of magnetic materials August 6th, 2021

Announcements

The National Space Society Mourns the Passing of Robert Krone, Founder of the Kepler Space Institute: Krone's Visionary and Humanistic Approach to the Study of Space Communities and Settlement Was Unique September 22nd, 2021

Researchers reveal multi-path mechanism in electrochemical CO2 reduction September 17th, 2021

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

Silver nanoparticles boost performance of microbial fuel cells September 17th, 2021

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

Getting to the root of tooth replantation challenges: Researchers from Tokyo Medical and Dental University (TMDU) report a delivery system that promotes healing in tooth replantation in rats September 17th, 2021

Researchers reveal multi-path mechanism in electrochemical CO2 reduction September 17th, 2021

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

Silver nanoparticles boost performance of microbial fuel cells September 17th, 2021

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