Français
4. Modular optical properties for imaging and therapy
4.1 The origins of gold's scalable optical properties
The modular nature of the optical properties of gold nanoparticles is reflected in the wide range of colors offered by gold nanoparticle suspensions. Metallic gold is yellow at the macroscopic scale, while a suspension of gold nanoparticles around ten nanometers in diameter is red, and a suspension of gold nanobatons 30 nm long and 5 nm in diameter is blue. This change in color with size and shape is attributed to the phenomenon of localized surface plasmon resonance observed in metal particles whose size is smaller than the wavelength of the incident radiation. The collective oscillation of free electrons in the conduction band induced by the incident electromagnetic field is then strongly confined within the particle. The resulting...
The Ultimate Scientific and Technical Reference
This article is included in
Healthcare technologies
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Modular optical properties for imaging and therapy
Intrinsic properties of gold for imaging and radiotherapy
Bibliography
Websites
Or-Nano, CNRS Research Group (GdR CNRS 2986) [On line].
http://www.insp.upmc.fr/webornano/
(page consulted on May 5, 2014)
CNRS, Sagascience, Nanotechnology & health [Online]
...Events
Noble Metal Nanoparticles Conference is held every two years.
http://www.grc.org/programs.aspx?year=2014&program=noblemetal
Nanohybrides conference is held every year.
Colloidal Nanoparticles for Biomedical Applications conference is held every year.
...Regulations
Decree no. 2012-232 of February 17, 2012 on the annual declaration of substances in nanoparticulate form.
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Nano-H, Saint Quentin Fallavier
Nanoprobes Inc, Yaphank, NY 11980-9710, USA
Organizations – Federations – Associations...
The Ultimate Scientific and Technical Reference
