Kejie Zhao's blog

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Global Environmental Outlook 4

Relax time at weekend, and let's see what happened around us during past two decades. The Global Environmental Outlook 4 was released in Oct 26, at Beijing China. This series of report was finished by 390 experts and the global environment are reviewed, the key words atmosphere, climate change, land degradation and forest cover, water resource and fish stock, biodiversity .etc are included. It provided the overview of the global social and economic trends, and most importantly, the human being's opportunities and challenges brought by these change. This report is full of statistic dates and color figures, so it would be easy to read. The full contents could also be found here


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A movie of stress distribution on crack-tip based on MD method


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Question: Is the local energy dictating dislocation emission constant for single crystal?

Hi everyone, in my size dependence study, I find the local energy dictating dislocation emission is almost constant for varied sized samples, in given directions of single crystal. I don't know this is an interesing finding, or just a common sense. Will you give me some suggestion, Thank you!

Kejie


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Question: what are these defect patterns?

Hi everyone, recentely I did a simulation work on the incipient yield surface of nano-voided single crystal Cu, in [100]-[010]-[001] crystalline system. Together with the size effect on yield strength studied, the macroscopic incipient yield surface for Cu is expected to be predicted. Also, I try to build the relation between the loading modes and failure pattern, but I really don't understand the defected atomistic pattern clearly. So any suggestion or discussion on this part would be appreciated. Thank you for attention. Detailed description seen in attachment file.


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A MD simulation of nano-void growth in Copper under uniaxial tension

Recentely we did a MD simulation work on the nano-void growth in Copper, welcome to my blog for any discussion..


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