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55 posts tagged materials
In this micrograph, the spherical Ag droplet (about 5 microns in diameter) is almost detached from the SiO2 base, yet it is in the clothing of a thin SiO2 layer.
Credit: Prof. Dr. Z. X. Cao
Source: Physics is Fun, Physics is Art; Prof. Dr. Ming-Wei Wu, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China.
With Ohio Supercomputer Center access, Sadhan Jana at the University of Akron simulated the equilibrium state of organization of 12 organic tie-molecules on the surface of MWCNT. The red dots represent oxygen, white represent hydrogen, and gray represent carbon atoms in tie molecules.
Source: Jana investigating the potential of carbon nanotubes for industry, Ohio Supercomputer Center.
Happy Valentine’s Day!
The unofficial world’s smallest valentine is made of palladium atoms and gold atoms deposited on a carbon film.
Image credit: University of Birmingham, Nanoscale Physics Research Laboratory.
Via Physorg.com: New record for world’s smallest atomic valentine
Scanning tunneling microscopy to visualize electronic states in Ga1‑xMnxAs. The electronic states in disordered conductors on the verge of localization are predicted to exhibit critical spatial characteristics indicative of the proximity to a metal‑insulator phase transition.
Source: Visualizing Critical Correlations near the Metal-Insulator Transition in Ga1‑xMnxAs, Yazdani Lab -Visualizing Quantum States of Matter-, Department of Physics, Princeton University.
3D rendering of graphene hole. TEAM 0.5 image made with WSxM.
Source: Watching Atoms Move at the Edge of a 2D Crystal, Zettl Research Group, Department of Physics at U.C. Berkeley
About the TEAM Project:
In December 1959, physicist Richard Feynman presented his famous lecture “There’s Plenty of Room at the Bottom”, now seen by many as the founding vision for nanoscience.
When he spoke about electron microscopy, Feynman posed this challenge: “The electron microscope is not quite good enough, with the greatest care and effort, it can only resolve about 10 angstroms … Is there no way to make the electron microscope more powerful?”
In 2009, exactly 50 years later, a group of scientists will meet the Feynman challenge with delivery of the TEAM microscope, an instrument to provide unprecedented opportunities to observe atomic scale order, electronic structure and dynamics of individual nanostructures.
Theoretical dodechehedron nanoscale quasi-crystals. Source.
The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Chemistry for 2011 to
Dan Shechtman
Technion - Israel Institute of Technology, Haifa, Israel
“for the discovery of quasicrystals”
From the Press Release:
In quasicrystals, we find the fascinating mosaics of the Arabic world reproduced at the level of atoms: regular patterns that never repeat themselves. However, the configuration found in quasicrystals was considered impossible, and Dan Shechtman had to fight a fierce battle against established science. The Nobel Prize in Chemistry 2011 has fundamentally altered how chemists conceive of solid matter.
More Info:
At Nobelprize.org page
Advanced Information at nobelprize.org (pdf)
Wikipedia entry: Quasicrystal
Entry at Cornell Laboratory of Atomic and Solid State Physics