My last piece of work at Harvard Univ, on metamaterials has been accepted for publication in applied physics letter. It is titled ”  Transient heat flux shielding using thermal metamaterials”

. It is still in the press and I will update the post once it is out. 

You can check out the preprint here.






Our work on thermal metamaterials is now highlighted by Philip Ball in , News and views, Nature Materials. You can find the article here.

The main thrust of the view is inverting  thermal diffusion in a thermal gradient using thermal metamaterials.

The pictures shown below is one that can illustrate what I am talking about. There is a gradient  from left to right, but within our metamaterial shell, we observe the gradient to be from right to left. The metamaterial device is constructed out of isotropic materials arranged in a spiral fashion( derived by coordinate transformation) to form the anisotropic device. 



This is a experimental demonstration of thermal metamaterial.

Our article on thermal metamaterials is now featured online by
physics today.  The link is here.



Our article , titled “Heat flux manipulation with engineered thermal materials” that will be published in PRL shortly, has been featured in sciencenow.  The titled in the news article is titled ” Heat Trickery Paves Way for Thermal Computers” which gives a brief description of thermal shielding, concentration and inversion. 

The link to the sciencenow article is here. 

The concept of heat has been known for a long time, and yet it is nontrivial to manipulate its flow. Here, we show that artificial materials can be engineered to guide the heat flow in unconventional ways. The conductivity of the artificial materials are engineered for diffusive energy transport of thermal conduction and experimentally shielding, concentrating, and inverting the applied heat flux.

The artificially engineered materials are otherwise known as metamaterials.

I will upload more details once the paper is published.

The acceptance notice is here.

My friend, Dr Gajju Pandey, enjoying his new ride- the 2009 Kawasaki Vulcan.  Enjoy!!!!


I will be adding new page, it will link to my professional site.

For all those interested in Newton’s draft of his thesis and papers, Cambridge university has made them available to the public. The link is here. The story on another blog providing the story link is here.

I found this youtube clip on the history of modern Calendar’s. It is short clip but a very  good summary.  Enjoy it.


The stats helper monkeys prepared a 2011 annual report for this blog.

Here’s an excerpt:

A New York City subway train holds 1,200 people. This blog was viewed about 3,900 times in 2011. If it were a NYC subway train, it would take about 3 trips to carry that many people.

Click here to see the complete report.