Showing posts with label Nanotechnology. Show all posts
Showing posts with label Nanotechnology. Show all posts

Wednesday, December 23, 2009

Sunday, February 22, 2009

New Electrode Material for (Lithium-Ion Batteries) Better Performance ......

Everything nanotech.....its really interesting, now its the turn of Lithium-Ion batteries. Rice University researchers lead by Pulickel Ajayan, have achieved this significant milestone. With increasing demand for battery technology high on the list of priorities in a world demanding electric cars and gadgets that last longer between charges, such innovations are key to the future. This research wherein 'nanotubes were grown to look – and act – like the coaxial conducting lines used in cables. The coax tubes consisted of a manganese oxide shell and a highly conductive nanotube core.

The researchers put in two materials – the nanotube, which is highly electrically conducting and can also absorb lithium, and the manganese oxide, which has very high capacity but poor electrical conductivity, but combined together one get something interesting. And there by one can enhance the number of charge/discharge cycles, with a larger capacity.

The most significance of this research, is the coaxial cable design of these materials that offers improved performance as electrodes for lithium batteries over the other combination. Though further study is essential to substantiate the claim. Its a good beginning..

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Sunday, February 1, 2009

Nano-insulin pill ?

In my earlier blog, I wrote about the use of nanoparticles in the field of Pharmaceutical will happen in the near future. But I didn’t expect it to happen so fast. Thanks to Dr.Chandra Sharma (of Sree Chitra Tirunal Institute for Medical Science & Technology, Kerala, India) for his success in achieving this fete so fast. Its something interesting, becoz, he has chosen the field of diabetic treatment. I think this research, will be a boon to the number of insulin dependent patients (40% of 135 million people) once established in human trials. Hope this research, will lead to other drugs with nanoparticle coating for more efficacy and reduced side effects.

The minute nanoparticles are smaller than 100 nanometres across and attract water on the inside and are water-repelling on the outside - when they reach the bloodstream they break down in response to the pH of blood and then release the insulin.

The animal experiments demonstrated that the nanoparticles enter the bloodstream and end up in organs such as the liver and kidney and in diabetic pigs showed the pill containing the nanoparticles led to control of blood glucose after eating. Though the results are encouraging in the animal models, have to be established in human beings and also most importantly the impact of nanoparticles in human beings has to be studied thoroughly, so that a concrete and conclusive evidence will happen in the coming days. I hope this will research will open flood gate for other drugs with nanoparticles coating. More....


Thursday, December 11, 2008

Nano fungus ! ....

Everything Nano…now it is the turn of fungus. German researchers, Alexander Eychm├╝ller and Karl-Heinz Peacute have discovered that they can coat the thin fronds that grow from Penicillium and other fungi with nanoscopic particles of a noble metal. They found that fungal threads coated with 200 nm gold particles appear reddish brown, as does a solution of such gold nanoparticles, providing evidence that the nanoparticulate nature of the particles is maintained during growth rather than aggregation to form larger units taking place. For more….