Home > Press > Staying ahead of the curve with 3D curved graphene
An Electrical transport of 3D graphene with various curvature radii CREDIT Tohoku University |
Abstract:
A team of researchers has amplified 3D graphene's electrical properties by controlling its curvature.
"Our research showed the conservation and the degradation of the ultra-low dissipative transport of Dirac electrons on the 3D curved surface for the first time," said Yoichi Tanabe, leading author of the study.
Graphene is a 2D atomic-layer material, shaped like honeycombs, which possesses excellent electrical, chemical, thermal, and mechanical properties for a wide range of applications such as semiconductors, electrical batteries, and composites.
Graphene sheets stacked together form graphite which makes up the lead in our pencils. However, packing together graphene tightly means it loses its 2D electronic properties.
One way to overcome this is to separate the graphene sheets with air-filled pores--like a sponge--at the nanometer scale and make it into a three-dimensional structure. This amplifies graphene's properties for practical purposes.
But doing so is not without its challenges; converting 2D graphene into 3D graphene introduces crystal defects and a host of other problems that cause it to lose its desirable characteristics. Little is known about how the curved surface degrades the graphene's electric transport properties and whether this is the reason for graphene losing its Dirac fermions.
The research team sought to investigate this by taking a single, 2D graphene sheet and folding it into a 3D structure with a bicontinuous and open porous structure.
The structure, with a curvature radius down to 25-50 nanometers, retained the basic electronic properties of 2D graphene well. Meanwhile, the motion of electrons on the 3D curvature enhanced electron scattering that had originated from the intrinsic curvature effects. In fact, nanoscale curvature provides a new degree of freedom to manipulate graphene's electronic behaviors for the emergent and unique electrical properties of 3D graphene.
####
For more information, please click here
Contacts:
Mingwei Chen
81-222-175-992
@TohokuUniPR
Copyright © Tohoku University
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.
Related Links |
Related News Press |
News and information
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Graphene/ Graphite
NRL discovers two-dimensional waveguides February 16th, 2024
2 Dimensional Materials
NRL discovers two-dimensional waveguides February 16th, 2024
Possible Futures
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
With VECSELs towards the quantum internet Fraunhofer: IAF achieves record output power with VECSEL for quantum frequency converters April 5th, 2024
Chip Technology
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024
HKUST researchers develop new integration technique for efficient coupling of III-V and silicon February 16th, 2024
Discoveries
Chemical reactions can scramble quantum information as well as black holes April 5th, 2024
New micromaterial releases nanoparticles that selectively destroy cancer cells April 5th, 2024
Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024
Materials/Metamaterials/Magnetoresistance
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Focused ion beam technology: A single tool for a wide range of applications January 12th, 2024
Announcements
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
A battery’s hopping ions remember where they’ve been: Seen in atomic detail, the seemingly smooth flow of ions through a battery’s electrolyte is surprisingly complicated February 16th, 2024
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||