IIT Madras researchers have discovered that atoms of nanoparticles made of two silver isotopes having just 25 atoms each rapidly exchanged their positions when the isotopes are mixed in solution. New particles composed of nearly 50% mixture of both isotopes were formed. This is akin to the exchange of hydrogen and deuterium atoms when normal … Continue reading Silver atoms of nanoparticles are mobile, IIT Madras team finds
Silver nanoparticles
IISER Kolkata’s compound makes drinking water nearly free of fluoride, metal ions
The compound synthesised by IISER Kolkata researchers can reduce copper, mercury, cadmium and iron content in drinking water to below 2 ppb, which is far below the WHO limit for these metals. After 10 minutes of treatment, the fluoride concentration dropped from 10 ppm to 10 ppb. The compound can also absorb a wide variety of oils … Continue reading IISER Kolkata’s compound makes drinking water nearly free of fluoride, metal ions
IIT Bombay’s superior water filter needs very little power
Electrodes made of copper plates wound with cellulose thread coated with carbon nanotubes for capacitive deionisation and placed close to each other achieved 84% efficiency in ion removal. With power requirement of just 0.15 mW, the water filter made by IIT Bombay researchers can be operated with a pen-torch battery. Unlike the conventionally used reverse osmosis … Continue reading IIT Bombay’s superior water filter needs very little power
IISc’s copper-coated membrane makes drinking water safe
The membrane with controlled release of copper ion may turn out to be a potential candidate for water purification applications with enhanced antibacterial and antifouling performances. There is an age-old practice of storing drinking water in copper vessels to rid the water of bacteria. Scientific evidence of copper vessel’s antibacterial property became available in March … Continue reading IISc’s copper-coated membrane makes drinking water safe
IIT Madras researchers prove the superiority of arsenic water filter which got $18 million funding
An exhaustive research carried out by a team of researchers led by Prof. T. Pradeep from the Department of Chemistry at the Indian Institute of Technology (IIT) Madras, spread over four years has put to rest the scepticism about the merits of the arsenic water filter developed by them. The water filter has been in … Continue reading IIT Madras researchers prove the superiority of arsenic water filter which got $18 million funding
IIT Madras researchers with a Midas touch, on a nanoscale
In a breakthrough, a team of researchers from the Indian Institute of Technology (IIT) Madras has successfully transformed nanoscale pieces of silver to gold and gold to silver by replacing their atoms one at a time. The shape and structure of these materials before and after transformation are identical, although they are completely different chemically. … Continue reading IIT Madras researchers with a Midas touch, on a nanoscale
IIT Madras scientists’ cheaper solution to make brackish water potable
It may soon become possible to convert brackish water into drinking water at about 12 paisa per litre right on the kitchen table by using a potential difference of just 1.8 volts, thanks to researchers at the Indian Institute of Technology, Madras (IIT-M). The researchers used a stack of tissue papers and carbonised them at … Continue reading IIT Madras scientists’ cheaper solution to make brackish water potable
IISc researchers produce an improved water purification membrane
Going a step further, a team of researchers from IISc Bangalore has improved upon the water purification membrane they developed in 2014. The membrane allows higher flow of water across it and kills nearly 99 per cent of E. coli present in water. The results of the study were published recently in the journal Nanoscale. Instead … Continue reading IISc researchers produce an improved water purification membrane
Indian researchers prolong eggs’ shelf life using nanotechnology
By coating paper trays with a mixture of silver nanoparticles and binders, scientists at the Chennai-based Tamil Nadu Veterinary and Animal Sciences University (TANUVAS) have been able to increase the shelf life of eggs by at least 14 days. This was possible by using silver nanoparticle-coated paper trays that killed both Gram-positive and Gram-negative bacteria … Continue reading Indian researchers prolong eggs’ shelf life using nanotechnology
With $18 million venture funding, IIT Madras Prof breaks the glass ceiling
“I am glad that technologies from academic labs are getting venture funding in units of millions of dollars,” says Prof. T. Pradeep from the Department of Chemistry, Indian Institute of Technology, Madras. It was only a couple of days ago that he signed the final agreement with Nanoholdings based in Connecticut, U.S. wherein Nanoholdings will … Continue reading With $18 million venture funding, IIT Madras Prof breaks the glass ceiling
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