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USNCCM Invited Session: Stress Evolution at the Nanoscale

Submitted by Edmund B. Webb III on

The U. S. National Congress on Computational Mechanics will be held in San Francisco, CA July 23-26 2007 (see link for conference below). As part of the symposium, "Modeling and Simulation of Nano Materials and Mechanics", an invited session discussing stress evolution at the nanoscale will be held. This session will foster discussion of outstanding computational challenges to understanding and predicting stress evolution during growth of materials at the nanometer length scale. Registration information for the meeting can be found via the link below.

IBM Airgap Microprocessors enabled by self assembly (Video)

Submitted by Teng Li on

An earlier post by Xiaohu Liu reported IBM's latest progress in microprocessors. IBM has figured out how to control and perfect the self assembly process to create trillions of tiny, nano-sized holes across a chip, which speed electrons that flow across wires inside the chip and reduce the power consumed by 15 percent.The following short video may help us understand a little bit more about the new technology. More videos, audio and images on this are available here (free, but registration needed)
Enjoy.

-Teng

We must not forget to teach the fundamentals

Submitted by MichelleLOyen on

An interesting blog discussion on the disappearance of fundamentals from teaching in Universities was brought to my attention.  It serves as an interesting reminder that we who are educators in the University system must be ever vigilent in planning mechanics curricula and changes to curriculum.  Should we be offering courses in the area of this month's jClub, "Nanomechanics"?  Should we drop classical courses that have stopped being interesting to the majority of students (and thus attract low numbers)?  Should we educate students explicitly in biomechanics without providing them a classical mechanics background?  These are the questions we are likely to face in the next few years as change continues to sweep across the university system, especialy in the US but elsewhere as well.  I believe that we as a community have a responsibility here to ensure that the high standards of the discipline are maintained through teaching of fundamentals and the passing along of these values to future generations!

Problem for registration has been fixed

Submitted by Zhigang Suo on

On Wednesday morning, I received an email from Anastassia Paskaleva. She was unable to create an account on iMechanica, because CAPTCHA kept telling her that she typed the letters wrong. Lesley Lam, iMechanicia user number 1, has just fixed the problem. Now new users can register once more. We apologize for the inconvenience that this problem might have caused you, and thank Anastassia for letting us know the problem.

On the need for popular science articles by mechanicians

Submitted by Mogadalai Gururajan on

Recently, the Royal Society Science book prize shortlist was announced; though the shortlisted books cover psychology, evolution, biodiversity, medicine and neurobiology, none in the area of materials or mechanics made it to the list. Or, pick any Best American Science writing volume--there are hardly any articles about materials or mechanics that make it to these anthologies.

Instabilities

Submitted by Zhigang Suo on
  • Free energy and generalized coordinate. Equilibrium and stability
  • Control parameter
  • Configurational transitions of two types
  • Critical point of configurational transition of the second type. Bifurcation analysis
  • Behavior near a critical point. Post-bifurcation analysis
  • Load-displacement relation near a critical point
  • Koiter's theory of imperfection sensitivity
  • A family of systems of many degrees of freedom
  • Mode of bifurcation
  • Vibration in the neighborhood of an equilibrium configuration

The 2007 Melosh Medalists

Submitted by John E. Dolbow on

The 19th Annual Melosh Competition for the Best Student Paper in Finite Element Analysis was held last Friday, April 27, at ETH Zurich. Two medalists were selected this year from the six finalists. The 2007 Melosh Medalists are Vikram Gavini, from Caltech, and Michael Hain, from Leibniz University, Hannover.