Featured Research

from universities, journals, and other organizations

First synthesis of gold nanoparticles inside human hair for dyeing and much more

Date:
December 5, 2012
Source:
American Chemical Society
Summary:
In a discovery with applications ranging from hair dyeing to electronic sensors to development of materials with improved properties, scientists are reporting the first synthesis of gold nanoparticles inside human hairs.

Gold nanoparticles darken hair after treatment for one day, center, and 16 days, right (untreated hairs, left).
Credit: American Chemical Society

In a discovery with applications ranging from hair dyeing to electronic sensors to development of materials with improved properties, scientists are reporting the first synthesis of gold nanoparticles inside human hairs.

Related Articles


Their study appears in ACS' journal Nano Letters.

Philippe Walter and colleagues explain that gold nanoparticles -- 40,000-60,000 of which could fit across the width of a human hair -- are a hot topic. Scientists are exploring uses, ranging from electronics and sensors to medical diagnostic tests and cancer treatments. Gold nanoparticles have been deposited on hair for use as electrodes, and gold nanoparticles had been used to dye wool. Walter's team looked at a new use -- dyeing hair, inspired by the ancient Greeks' and Romans' use of another metal, lead, to color their hair.

They describe the first synthesis of fluorescent gold nanoparticles inside human hair. It involved soaking white hairs in a solution of a gold compound. The hairs turned pale yellow and then darkened to a deep brown. Using an electron microscope, the scientists confirmed that the particles were forming inside the hairs' central core cortex. The color remained even after repeated washings.

The authors acknowledge funding from the Agence Nationale de la Recherche.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Shrutisagar D. Haveli, Philippe Walter, Gilles Patriarche, Jeanne Ayache, Jacques Castaing, Elsa Van Elslande, Georges Tsoucaris, Ping-An Wang, Henri B. Kagan. Hair Fiber as a Nanoreactor in Controlled Synthesis of Fluorescent Gold Nanoparticles. Nano Letters, 2012; 121112101302003 DOI: 10.1021/nl303107w

Cite This Page:

American Chemical Society. "First synthesis of gold nanoparticles inside human hair for dyeing and much more." ScienceDaily. ScienceDaily, 5 December 2012. <www.sciencedaily.com/releases/2012/12/121205121157.htm>.
American Chemical Society. (2012, December 5). First synthesis of gold nanoparticles inside human hair for dyeing and much more. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2012/12/121205121157.htm
American Chemical Society. "First synthesis of gold nanoparticles inside human hair for dyeing and much more." ScienceDaily. www.sciencedaily.com/releases/2012/12/121205121157.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NASA's First 3-D Printer In Space Creates Its First Object

NASA's First 3-D Printer In Space Creates Its First Object

Newsy (Nov. 26, 2014) The International Space Station is now using a proof-of-concept 3D printer to test additive printing in a weightless, isolated environment. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins