Plasmonic magnetic nanoparticles for biomedicine.
Core-shell nanoparticles containing both iron oxide and gold are proposed as a new tool for in vitro biosensing applications. The surface plasmon resonance of gold was used to track the positions of individual particles smaller than the optical diffraction limit. With a large magnetic field gradient from a tip made of a soft magnetic material, particles can be collected and later released.
Majetich
Sara A
SA
Physics Department, Carnegie Mellon University, Pittsburgh, PA 15213, USA. sara@cmu.edu
Lim
JitKang
J
Tilton
Robert D
RD
D015374:Biosensing Techniques / Q000379:methods*; D005290:Ferric Compounds / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D006367:HeLa Cells; D006801:Humans; D053768:Metal Nanoparticles; D020349:Surface Plasmon Resonance / Q000379:methods*
D005290:Ferric Compounds; C000499:ferric oxide; D006046:Gold