Microscopy News
  • Microscopy News
    • Press Releases
    • Archive
    • Events/Workshops
    • Newsletter
  • Companies
    • Microscope and Accessiores
    • Imaging Software
    • Dealer
  • Products
    • Microscopes
      • Upright Microscopes
      • Inverted Microscopes
      • Stereo Microscopes
      • Electron Microscopes
    • Software
      • Imaging Software
    • Others
      • Imaging Cameras
      • Systems
      • Medical/Surgical Solutions
      • Accessoires
  • Download Center
    • Instructions
    • Tutorials
    • Brochures
    • Software
  • MediaKit / Sponsoring
  • Archive
  • Suche

Empa researchers clarify reaction pathway to fabricate graphene-like materials

November 10, 2010 – Graphene is a promising material for tomorrow’s nanoelectronics devices. Precise and upscaleable methods to fabricate graphene and derived materials with desired electronic properties are however still searched after. To overcome the current limitations, Empa researchers have fabricated graphene-like materials using a surface chemical route and clarified in detail the corresponding reaction pathway. The work has just been published in the scientific journal “Nature Chemistry“. The scientists combined empirical observations using scanning tunnelling microscopy with computer simulations. Electronic components are getting smaller and smaller, with microelectronic components gradually being replaced by nanoelectronic ones.

The scanning tunnelling microscope images shows nanographene molecules and the two stabilised intermediate products on a copper surface. The molecular models show a nanographene (at the bottom right) as well as the two intermediate products (above and left). In reality the diameter of the molecule is approximately one nanometre. Photo: Empa

On nanoscale dimensions, silicon, which is at the present stage the most commonly used material in semiconductor technology, reaches however a limit, preventing further miniaturization and technological progress. New electronic materials are therefore in great demand. Due to its outstanding electronic properties, graphene, a two-dimensional carbon network, is considered as a possible replacement. However, several obstacles must be overcome before graphene can be used in semiconductor technology. For instance, currently there is no easily applicable method for large-scale processing of graphene-like materials.

Empa researchers of thenanotech@surfaces Laboratory reported on a surface chemical route to fabricate small fragments of graphene, so-called nanographenes. Using a prototypical polyphenylene precursor, the researchers clarified, together with scientists at the Max Planck Institute for Polymer Research in Mainz (Germany) and the University of Zurich, how the reaction pathway runs in detail on a copper surface und how the building blocks can be transformed into planar nanographenes directly on the surface. The work has been published last Sunday in the scientific journal “Nature Chemistry” as an advanced online publication.

Successful partners: experiment and simulation

For their investigations the researchers combined empirical observations, in particular from scanning tunnelling microscopy with computer simulations. The simulations are used to determine whether a theoretically possible reaction step is energetically possible or not. The result: the reaction pathway consists of six steps with five intermediate products. Two of them are stabilised by the surface so that they can be stably imaged with the scanning tunnelling microscope. The reaction barriers connecting the different intermediates are lowered through a catalytic effect of the substrate.

To be capable of being integrated in electronic circuits, the graphene-like material must however be manufactured on semiconductor surfaces instead of metal ones. The researchers have simulated whether their approach could also work on these surfaces and the results are very promising, showing that surface-supported synthesis is a possible way to fabricate tailored nanographenes on a range of different substrates.

The three pillars of today’s science: theory, experiment, and simulation

Progress in today’s scientific research relies at the same time on theory, experiments, and to an increasing extent on computer simulations. These simulations are complementary to often complex lab experiments and make it possible to get further information that cannot be obtained with experimental methods alone. The combination of experiments and simulations as well as the deduced theories therefore allow for a more and more accurate explanation and precise prediction of natural phenomena.

Literature reference
“Surface-assisted cyclodehydrogenation provides a synthetic route towards easily processable and chemically tailored nanographenes”, M. Treier, C.A. Pignedoli, T. Laino, R. Rieger, K. Müllen, D. Passerone, R. Fasel, Nature Chemistry, published online 7 November 2010; DOI: 10.1038/NCHEM.891

Source: idw

www.empa.ch

Share this post
  • Teile auf Facebook
  • Teile auf Twitter
  • Teile auf Google+
  • Teile per Mail
Sponsors
Related Posts
Archive

WITec refreshes its website www.witec.de

https://microscopy-news.com/wp-content/uploads/2017/01/fd45d6c858ed43477f37690b5a62b10e.jpg 135 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:45:102017-01-17 10:45:10WITec refreshes its website www.witec.de
Archive

Olympus Introduces New Microscope Objectives for Ultra-Deep Biological Imaging

https://microscopy-news.com/wp-content/uploads/2017/01/617bc24f81d3715820c3e91723ce1263.jpg 967 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:44:242017-01-17 10:44:24Olympus Introduces New Microscope Objectives for Ultra-Deep Biological Imaging
Archive

Andor launches KOMET 7 – The most advanced and powerful software solution for analysis, data management and presentation of comet assay samples

https://microscopy-news.com/wp-content/uploads/2017/01/516b76019f18322d8d3a9ddc96987741.jpg 300 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:44:242017-01-17 10:44:24Andor launches KOMET 7 – The most advanced and powerful software solution for analysis, data management and presentation of comet assay samples
Archive

Advanced Thin Films Enters Medical Laser Optics Market

https://microscopy-news.com/wp-content/uploads/2017/01/543ba9c56fe57e856dc7f252e2ebd3ba.jpg 466 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:43:462017-01-17 10:43:46Advanced Thin Films Enters Medical Laser Optics Market
Archive

Module transforms Raman microscopes into high throughput chemical analyzers

https://microscopy-news.com/wp-content/uploads/2017/01/7423894303b540804bd4b9ded95ac7a1.jpg 228 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:43:332017-01-17 10:43:33Module transforms Raman microscopes into high throughput chemical analyzers
Archive

Motic Microscopes launches the new BA410E for biomedical applications

https://microscopy-news.com/wp-content/uploads/2017/01/ca9ed333736eb38ce4abbffcee37be60.jpg 260 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:42:462017-01-17 10:42:46Motic Microscopes launches the new BA410E for biomedical applications
Archive

R&D 100 Award 2014 for ZEISS ELYRA P.1 with 3D-PALM

https://microscopy-news.com/wp-content/uploads/2017/01/2ed54dfbb5613dc8894327c8185309c1.jpg 175 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:42:442017-01-17 10:42:44R&D 100 Award 2014 for ZEISS ELYRA P.1 with 3D-PALM
Archive

Motic Microscopes presents the new AE31E for microbiology

https://microscopy-news.com/wp-content/uploads/2017/01/944a198042025732e6e8fb5a715d48c5.jpg 243 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:41:572017-01-17 10:41:57Motic Microscopes presents the new AE31E for microbiology
Archive

CRAIC Technologies Website: A Resource for UV-Visible-NIR and Raman Microspectroscopy

https://microscopy-news.com/wp-content/uploads/2017/01/3725b94ba62d8e2205f5f20b3cdee1ee.jpg 463 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:41:372017-01-17 10:41:37CRAIC Technologies Website: A Resource for UV-Visible-NIR and Raman Microspectroscopy
Archive

Imaging companies in Europe shoulder-to-shoulder with life scientists

https://microscopy-news.com/wp-content/uploads/2017/01/1affabb625a5c37519bafa89fedc162e.jpg 86 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:41:102017-01-17 10:41:10Imaging companies in Europe shoulder-to-shoulder with life scientists
Archive

Semrock Releases 20th Edition Master Catalog

https://microscopy-news.com/wp-content/uploads/2017/01/61e12630a94a26e3e618905ce9de549a.jpg 234 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:40:582017-01-17 10:40:58Semrock Releases 20th Edition Master Catalog
Archive

World’s Smallest Commercially Available Ball Screw!

https://microscopy-news.com/wp-content/uploads/2017/01/59d9386a4a7887c0e4775572b7f7511c.jpg 262 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:39:522017-01-17 10:39:52World’s Smallest Commercially Available Ball Screw!
Archive

NIST Announces New Competition for Advanced Manufacturing Planning Awards‏

https://microscopy-news.com/wp-content/uploads/2017/01/3486cdac57a29cec43d7506599bba9f1.jpg 188 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:39:482017-01-17 10:39:48NIST Announces New Competition for Advanced Manufacturing Planning Awards‏
Archive

XIMEA unveils Thunderbolt™ 2 high speed cameras with IMX174 and CMV20000

https://microscopy-news.com/wp-content/uploads/2017/01/341633931c01418c4fa8e0a90a8236d4.jpg 139 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:39:052017-01-17 10:39:05XIMEA unveils Thunderbolt™ 2 high speed cameras with IMX174 and CMV20000
Archive

New Blackfly® USB3 Vision™ CCD Camera Family Provides Easy Interface Transition

https://microscopy-news.com/wp-content/uploads/2017/01/082c31c09a15eff9e43b5c2fcf5f38cd.jpg 287 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:39:032017-01-17 10:39:03New Blackfly® USB3 Vision™ CCD Camera Family Provides Easy Interface Transition
Archive

Digital Surf and Image Metrology join forces

https://microscopy-news.com/wp-content/uploads/2017/01/3058648b93257cab2f2ca0eaad966c4b.jpg 174 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:38:262017-01-17 10:38:26Digital Surf and Image Metrology join forces
Archive

Bessel Beam Plane Illumination Microscopy Enables Fast 3D Volume Imaging

https://microscopy-news.com/wp-content/uploads/2017/01/70d120c9518cf134343f93d7a2adf4d3.jpg 181 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:38:142017-01-17 10:38:14Bessel Beam Plane Illumination Microscopy Enables Fast 3D Volume Imaging
Archive

Dolomite´s new microfluidic system showcases droplet merging at nanoliter sample scale

https://microscopy-news.com/wp-content/uploads/2017/01/22b06d4094468fc910406cd44d96ec1f.jpg 181 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:37:192017-01-17 10:37:19Dolomite´s new microfluidic system showcases droplet merging at nanoliter sample scale
Archive

Point Grey´s Latest Blackfly® GigE PoE Camera Features Popular High Sensitivity VGA CCD

https://microscopy-news.com/wp-content/uploads/2017/01/a5d0c77f7619812a129b2a4e6a9cb90b.jpg 234 350 otmaro https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png otmaro2017-01-17 10:36:522017-01-17 10:36:52Point Grey´s Latest Blackfly® GigE PoE Camera Features Popular High Sensitivity VGA CCD
Archive

Point Grey Launches New Grasshopper®3 Family of High Resolution GigE Vision™ PoE Cameras

https://microscopy-news.com/wp-content/uploads/2017/01/a77db128b10a613c26b9e4dbea5dae02.jpg 220 350 Ottermedia https://microscopy-news.com/wp-content/uploads/2017/01/Microscopy-news_logo_microscope_news.png Ottermedia2017-01-17 10:36:392017-01-17 10:36:39Point Grey Launches New Grasshopper®3 Family of High Resolution GigE Vision™ PoE Cameras
ZurückWeiter

Sponsors

Follow us

Products

  • Upright Microscopes
  • Inverted Microscopes
  • Stereo Microscopes
  • Electron Microscopes
  • Imaging Cameras
  • Imaging Software
  • Systems
  • Medical/Surgical Solutions
  • Accessoires

Navigation

  • Microscopy News
  • MediaKit / Sponsoring
  • Contact
  • Privacy
  • Imprint

Contact

Microscopy News Portal
Am Ginster 6
21409 Oerzen, Germany

Email:
info@microscopy-news.com

Search

© Copyright - Microscopy-News.com 2017 | Germany
  • Facebook
  • Twitter
  • Mail
  • Contact
  • Privacy
  • Imprint
Olympus to Preview BX63 Customizable Motorized Research Microscope at Neuroscience... TRIO™ multispectral imaging system launched for multi-analyte investigation...
We use cookies to improve your experience with our site.OKLearn more
Nach oben scrollen