October 2010

China has unveiled a new supercomputer, Tianhe-1A, and has 1.4 times the horsepower of the current top computer,  Jaguar at Oak Ridge National Laboratory that previously stood at No. 1 on a twice-yearly ranking of the 500 fastest supercomputers. The system to maintain ranking is based on measurements of the standard tests used to gauge how mathematical calculations are processed.

The new supercomputer  is housed at the research center at the National University of Defense Technology. The center says it is “under the dual supervision of the Ministry of National Defense and the Ministry of Education.”

It was constructed based on processors from Nvidia and Intel.

For more results on the news see here and here.


I cannot stop laughing …

I hope you enjoy this as much as I do

Think again, there are nearly 5000 janitors in the US with PhDs. For more information see here.

Rare earth metals.. at least 17 in all .. remember the good old period table from school chemistry,  the bottom table is the one that is the list.

They are required for cell phones, laptops, memories, IC’s, and most importantly all of future green technologies, which have  a important material are magnets( are made of rare earth materials).

If rare earth metals go bust the entire energy revolution of the future could go bust.  And,  China mines most of the rare earth metals.  China could use it all up and they are telling it will be all over 15 years.

I hope we come with an alternative soon.

PBS has an article here.


Our paper has been accepted in PRL.  The link is here.  The abstract is below.

Direct observation of dynamical bifurcation in a superfluid Josephson junction

Supradeep Narayana and Yuki Sato

Accepted Tuesday Oct 19, 2010

We report a direct observation of dynamical bifurcation between two plasma oscillation states of a superfluid Josephson junction. We excite the superfluid plasma resonance into a nonlinear regime by driving below the natural plasma frequency and observe a clear transition between two dynamical states. We also demonstrate bifurcation by changing the potential well with temperature variations.

Off to work again……

Students, researchers and even professors, all have had trouble with writing a good research paper. How to put your research into a few pages that is meaningful and often helpful to others will probably determine how good your paper is.  I found this article by Prof George Whitesides on how to focus and organize your thoughts and research findings  into a good paper.  I am sure there are plenty of such guidelines out there, but I have found this useful.   Not just research paper, but even lab reports, proposals, or  any scientific literature, this article can help.

Good luck writing papers.

The article was published in Advanced Materials , vol 16, No. 15, Aug 4, 2004. ( It was created on Oct 4, 1989 !).

A copy of the paper is here -> Whitesides_writing_res_paper.  (I am sure Prof Whitesides will not mind if I post a copy.)