Abstract
We describe a new approach for optical imaging that combines the advantages of molecularly targeted plasmonic nanoparticles and magnetic actuation. This combination is achieved through hybrid nanoparticles with an iron oxide core surrounded by a gold layer. The nanoparticles are targeted in-vitro to epidermal growth factor receptor, a common cancer biomarker. The gold portion resonantly scatters visible light giving a strong optical signal and the superparamagnetic core provides a means to externally modulate the optical signal. The combination of bright plasmon resonance scattering and magnetic actuation produces a dramatic increase in contrast in optical imaging of cells labeled with hybrid gold/iron oxide nanoparticles.
Original language | English (US) |
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Pages (from-to) | 12930-12943 |
Number of pages | 14 |
Journal | Optics Express |
Volume | 14 |
Issue number | 26 |
DOIs | |
State | Published - Dec 25 2006 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics