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

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Graphene/ Graphite

Bumpy surfaces, graphene beat the heat in devices: Rice University theory shows way to enhance heat sinks in future microelectronics November 29th, 2016

Uncovering the secrets of friction on graphene: Sliding on flexible graphene surfaces has been uncharted territory until now November 23rd, 2016

2-D material a brittle surprise: Rice University researchers finds molybdenum diselenide not as strong as they thought November 14th, 2016

Rice expands graphene repertoire with MRI contrast agent: Metal-free fluorinated graphene shows no signs of toxicity in cell culture tests November 10th, 2016

Govt.-Legislation/Regulation/Funding/Policy

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Quantum obstacle course changes material from superconductor to insulator December 1st, 2016

Molecular Nanotechnology

Tip-assisted chemistry enables chemical reactions at femtoliter scale November 16th, 2016

Scientists come up with light-driven motors to power nanorobots of the future: Researchers from Russia and Ukraine propose a nanosized motor controlled by a laser with potential applications across the natural sciences and medicine November 11th, 2016

New Book by Nobel Laureate Tells Story of Chemistry’s New Field: Fraser Stoddart explains the mechanical bond and where it is taking scientists November 11th, 2016

HKU chemists develop world's first light-seeking synthetic Nanorobot November 9th, 2016

Discoveries

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Announcements

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Tools

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Controlled electron pulses November 30th, 2016

Scientists shrink electron gun to matchbox size: Terahertz technology has the potential to enable new applications November 25th, 2016

News from Quorum: The Agricultural Research Service of the USDA uses a Quorum Cryo-SEM preparation system for the study of mites, ticks and other soft bodied organisms November 22nd, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project