Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Graphene-control cutting using an atomic force microscope-based nanorobot

This shows graphene cutting results based on a nanorobot.

Credit: ©Science China Press
This shows graphene cutting results based on a nanorobot.

Credit: ©Science China Press

Abstract:
Graphene, a stable two-dimensional structure, has attracted tremendous worldwide attention in recent years because of its unique electronic, physical and mechanical properties as well as its wide range of applications. It has been proven experimentally that the electrical properties of graphene are strongly related to its size, geometry, and edge structure. Therefore, controlling graphene to desired edge structures and shapes is required for its practical application. To date, researchers have explored many graphene patterning methods, such as a catalytic cutting [1-4], SPM(Scanning Probe Microscopy)-based electric field tailoring [5-7], energy beam cutting [8-10] and photocatalytic patterning techniques [11]. The current methods can tailor graphene, however, lack of real-time sensor feedback during patterning and cutting results in an open-loop manufacturing process. This greatly limits the cutting precision of graphene and reduces the efficiency of device manufacture. Therefore, a closed-loop fabrication method using interaction forces as real-time feedback is needed to tailor graphene into desired edge structures and shapes in a controllable manner.

Graphene-control cutting using an atomic force microscope-based nanorobot

PR China | Posted on May 27th, 2012

Professor LIU Lianqing from the State Key Laboratory of Robotics, Shenyang Institute of Automation Chinese Academy of Sciences and Professor XI Ning from the Department of Electrical and Computer Engineering, Michigan State University undertook the background research to overcome this challenge. Their work, entitled "Graphene Control Cutting Using an Atomic Force Microscope Based NanoRobot", was published in SCIENTIA SINICA Physica, Mechanica & Astronomica. 2012, Vol 42(4). They investigated controlled cutting methods of graphene based on nanoscale force feedback by the introduction of robot perception, drivers and behavior coupled with an atomic force microscope. They found that the cutting forces were related to the cutting direction of the graphene lattice because of the asymmetry of the crystal structure of graphene. This discovery is expected to allow nanoscale forces to be used as real-time feedback to establish a closed-loop mechanism to cut graphene with precise control.

Atomic force microscopy is only a nanoscale observation tool, and its main shortcomings are poor location ability, lack of real-time feedback, and low efficiency. These challenges are solved by the introduction of robotics that is efficient at nanomanipulation. In this article, the relationship between lattice cutting directions and nanocutting forces were studied systematically by rotating the sample under the same cutting conditions (load, cutting velocity, tip, and effective cutting surface of the tip). The experimental results show that the cutting force is related to the lattice cutting direction: the cutting forces vary with cutting direction in the same period with a difference of up to around 209.36 nN.

This article is the first to show that cutting forces vary with lattice cutting directions, which lays an experimental foundation to build a closed-loop fabrication strategy using real-time force as a sensor feedback to control the cutting direction with lattice precision. Combined with existing parallel multi-tip technology, the technique developed in this work will make it possible to fabricate large-scale graphene-based nanodevices at low cost with high efficiency. This research was supported by the National High Technology Research and Development Program of China (Grant No. 2009AA03Z316), the National Natural Science Foundation of China (Project Nos. 60904095, 51050110445, and 61175103), and the CAS/SAFEA (Chinese Academy of Sciences/State Administration of Foreign Experts Affairs) International Partnership Program for Creative Research Teams.

See the article: Zhang Y, Liu L Q, Xi N, et al. Graphene Control Cutting Using an Atomic Force Microscope Based NanoRobot (In Chinese). SCIENTIA SINICA Physica, Mechanica & Astronomica, 2012, 42(4):358

References

[1] Datta, S S.et al. Crystallographic Etching of Few-Layer Graphene. Nano Lett, 8, 1912-1915 (2008).

[2] Ci, L. et al. Controlled nanocutting of graphene. Nano Research, 1, 116-122 (2008).

[3] Campos, L. C. et al. Anisotropic Etching and Nanoribbon Formation in Single-Layer Graphene. Nano Lett, 9, 2600-2604 (2009).

[4] Gao, L. et al. Crystallographic Tailoring of Graphene by Nonmetal SiOx Nanoparticles. J. Am. Chem. Soc, 131, 13934-13936 (2009).

[5] Giesbers, A. J. M. et al. Nanolithography and manipulation of graphene using an atomic force microscope. Sol. St. Comm, 147, 366-369 (2008).

[6] Tapaszto, L., Dobrik, G., Lambin, P. & Biro, L. P. Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography. Nat Nano, 3, 397-401 (2008).

[7] Weng, L., Zhang, L.Y., Chen, Y. P. & Rokhinson L.P. et al. Atomic force microscope local oxidation nanolithography of graphene. Appl. Phys. Lett, 93, 093107 (2008)

[8] Fischbein, M. D. & Drndic, M. Electron beam nanosculpting of suspended graphene sheets. Appl. Phys. Lett, 93, 113107 (2008).

[9] Bell, D. C., Lemme, M. C., Stern, L. A. & Marcus, C. M. Precision cutting and patterning of graphene with helium ions. Nanotechnology, 20, 455301(2009).

[10] Lemme, M. C., Bell, D. C., Williams, J. R. Etching of Graphene Devices with a Helium Ion Beam. ACS Nano, 3, 2674-2676(2009).

[11] Zhang, L.M., et al. Photocatalytic Patterning and Modification of Graphene. J. Am. Chem.Soc. 133, 2706-2713(2011)

####

For more information, please click here

Contacts:
LIU Lianqing

Copyright © Science in China Press

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

Halas wins American Chemical Society Award in Colloid Chemistry: Rice University nanophotonics pioneer honored for colloid research September 18th, 2018

Leti & EFI Aim to Dramatically Improve Reliability & Speed of Low-Cost Electronic Devices for Autos: Project Will Extend Model Predictive Control Technique to Microcontrollers, Digital Signal Processors and Other Devices that Lack Powerful Computation Capabilities September 18th, 2018

Researchers managed to prevent the disappearing of quantum information September 14th, 2018

Tiny camera lens may help link quantum computers to network September 14th, 2018

Graphene/ Graphite

Graphene nanotubes outperform ammonium salts and carbon black in PU applications September 11th, 2018

Carbon in color: First-ever colored thin films of nanotubes created: A method developed at Aalto University, Finland, can produce large quantities of pristine single-walled carbon nanotubes in select shades of the rainbow; the secret is a fine-tuned fabrication process -- and a s August 29th, 2018

A human enzyme can biodegrade graphene August 28th, 2018

A Novel Graphene Quantum Dot Structure Takes the Cake August 24th, 2018

Govt.-Legislation/Regulation/Funding/Policy

Researchers managed to prevent the disappearing of quantum information September 14th, 2018

New photonic chip promises more robust quantum computers September 14th, 2018

Could a demon help to create a quantum computer? Physicists implement a version of Maxwell's famous thought experiment for reducing entropy September 5th, 2018

Ultracold atoms used to verify 1963 prediction about 1D electrons: Rice University, University of Geneva study focuses on theory that's increasingly relevant to chipmakers September 5th, 2018

Molecular Nanotechnology

Measuring the nanoworld September 4th, 2018

All wired up: New molecular wires for single-molecule electronic devices August 31st, 2018

Nanotubes change the shape of water: Rice University engineers show how water molecules square up in nanotubes HOUSTON August 24th, 2018

A molecular switch at the edge of graphene July 27th, 2018

Discoveries

Researchers managed to prevent the disappearing of quantum information September 14th, 2018

Tiny camera lens may help link quantum computers to network September 14th, 2018

New devices based on rust could reduce excess heat in computers: Physicists explore long-distance information transmission in antiferromagnetic iron oxide September 14th, 2018

New photonic chip promises more robust quantum computers September 14th, 2018

Announcements

Halas wins American Chemical Society Award in Colloid Chemistry: Rice University nanophotonics pioneer honored for colloid research September 18th, 2018

Leti & EFI Aim to Dramatically Improve Reliability & Speed of Low-Cost Electronic Devices for Autos: Project Will Extend Model Predictive Control Technique to Microcontrollers, Digital Signal Processors and Other Devices that Lack Powerful Computation Capabilities September 18th, 2018

New devices based on rust could reduce excess heat in computers: Physicists explore long-distance information transmission in antiferromagnetic iron oxide September 14th, 2018

New photonic chip promises more robust quantum computers September 14th, 2018

Tools

Carbon nanodots do an ultrafine job with in vitro lung tissue: New experiments highlight the role of charge and size when it comes to carbon nanodots that mimic the effect of nanoscale pollution particles on the human lung. September 12th, 2018

Terahertz spectroscopy enters the single-molecule regime September 7th, 2018

Mirrorcle Demonstrates MEMS-based Programmable Light Source at CES and PW18 August 30th, 2018

Stress-free ALD from Picosun August 28th, 2018

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