Home > Press > First synthesis of gold nanoparticles inside human hair for dyeing and much more
 |
| Gold nanoparticles darken hair after treatment for one day, center, and 16 days, right (untreated hairs, left).
Credit: American Chemical Society |
Abstract:
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. Their study appears in ACS' journal Nano Letters.
First synthesis of gold nanoparticles inside human hair for dyeing and much more
Washington, DC | Posted on December 5th, 2012Philippe 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.
####
About American Chemical Society (ACS)
The American Chemical Society is a nonprofit organization chartered by the U.S. Congress. With more than 164,000 members, ACS is the world's largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.
To automatically receive news releases from the American Chemical Society, contact
For more information, please click here
Contacts:
Michael Bernstein
202-872-6042
Philippe Walter, Ph.D.
Université Pierre et Marie Curie-CNRS
Ivry-sur-Seine, Paris 94200
France
Phone : +33 1 44 27 82 22
Fax : +33 1 44 27 82 98
Email:
Copyright © American Chemical Society (ACS)
If you have a comment, please Contact us.Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Bookmark:
| Related Links |
| Related News Press |
News and information
Researchers develop molecular qubits that communicate at telecom frequencies October 3rd, 2025
Next-generation quantum communication October 3rd, 2025
"Nanoreactor" cage uses visible light for catalytic and ultra-selective cross-cycloadditions October 3rd, 2025
Govt.-Legislation/Regulation/Funding/Policy
New imaging approach transforms study of bacterial biofilms August 8th, 2025
Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025
Institute for Nanoscience hosts annual proposal planning meeting May 16th, 2025
Chip Technology
Lab to industry: InSe wafer-scale breakthrough for future electronics August 8th, 2025
A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025
Programmable electron-induced color router array May 14th, 2025
Nanomedicine
New molecular technology targets tumors and simultaneously silences two ‘undruggable’ cancer genes August 8th, 2025
New imaging approach transforms study of bacterial biofilms August 8th, 2025
Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025
Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025
Sensors
Sensors innovations for smart lithium-based batteries: advancements, opportunities, and potential challenges August 8th, 2025
Quantum engineers ‘squeeze’ laser frequency combs to make more sensitive gas sensors January 17th, 2025
Discoveries
Researchers develop molecular qubits that communicate at telecom frequencies October 3rd, 2025
Next-generation quantum communication October 3rd, 2025
"Nanoreactor" cage uses visible light for catalytic and ultra-selective cross-cycloadditions October 3rd, 2025
Announcements
Rice membrane extracts lithium from brines with greater speed, less waste October 3rd, 2025
Researchers develop molecular qubits that communicate at telecom frequencies October 3rd, 2025
Next-generation quantum communication October 3rd, 2025
"Nanoreactor" cage uses visible light for catalytic and ultra-selective cross-cycloadditions October 3rd, 2025
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||