|
|
|
|
|
24nd Safarul Muzaffer 1436 | Thursday, Dec 18, 2014
Science

Gold nanoparticles make for permanent hair dyes

Thursday, 6 December 2012
Comments(0)
Paris, December 06:

French scientists have for the first time synthesised gold nanoparticles for dyeing white hair to near permanent brown shades.

The process involved soaking white hair in a solution of a gold compound, turning them pale yellow and then darkening them to a deep brown.

Using an electron microscope, the scientists confirmed that the particles were forming inside the central core cortex of the hair. The colour remained even after repeated washings, the journal Nano Letters reports.

Philippe Walter, director of a lab at the Centre National de la Recherche Scientifique (CNRS) and colleagues explain that 40,000-60,000 gold nanoparticles could fit across the width of a human hair.

Gold nanoparticles have been deposited on hair for use as electrodes, and they had been used to dye wool, according to a CNRS statement.

Walter's team looked at a new use - dyeing hair, inspired by the ancient Greeks' and Romans' use of another metal, lead, to colour their hair.

----IANS

Latest News

Arms licence expiry: Khan's plea to call officials as wintess

A court here today rejected Bollywood actor Salman Khan's plea seeking permission to produce as witn ...

Xi, Modi, Merkel top performing leaders: Survey

Prime Minister Narendra Modi was placed No 2, behind Chinese President Xi Jinping, in a list of 30 t ...

Amla hits double century before declaration

Hashim Amla hit his third Test double century and Stiaan van Zyl made a hundred on his debut before ...

Related News

Dinosaur-killer asteroid nearly wiped out mammals too

Many mammals came perilously close to extinction when a massive asteroid hit the earth 66 million ye ...

'Perfect storm' turbulence squelching star formation found aro...

Astronomers have recently detected a "perfect storm" turbulence that was crushing star formation aro ...

Substance from broccoli can help ward off premature ageing

A team of scientists has revealed that Hutchinson-Gilford Progeria Syndrome (HGPS) related defects c ...

Post new comment

To combat spam, please enter the code in the image.

Rs. 26630 (Per 10g)

Opinion Poll
Calling Nathuram Godse as 'patriot', another communal card come out from the sleeves of NDA government?
YesNoCan't say

Matrimony | Photos | Videos | Search | Polls | Archives | Advertise | Letters

© The Siasat Daily, 2012. All rights reserved.
Jawaharlal Nehru Road, Abids, Hyderabad - 500001, Telangana, India
Tel: +91-40-24744180, Fax: +91-40-24603188
contact@siasat.com