Two-photon luminescence properties of gold nanorods
| Autor: | Tianyi Wang, Marc D. Feldman, David L. Halaney, Derek Ho, Thomas E. Milner |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
ocis:(160.4236) Nanomaterials
Materials science ocis:(170.6280) Spectroscopy fluorescence and luminescence business.industry Nanotechnology and Plasmonics ocis:(190.1900) Diagnostic applications of nonlinear optics Photobleaching Atomic and Molecular Physics and Optics ocis:(160.4760) Optical properties Rhodamine 6G chemistry.chemical_compound Optics chemistry Quantum dot ocis:(190.4180) Multiphoton processes Optoelectronics Nanorod Emission spectrum Surface plasmon resonance business Luminescence Biotechnology Visible spectrum |
| Zdroj: | Biomedical Optics Express |
| ISSN: | 2156-7085 |
| Popis: | Gold nanorods can be internalized by macrophages (an important early cellular marker in atherosclerosis and cancer) and used as an imaging contrast agent for macrophage targeting. Objective of this study is to compare two-photon luminescence (TPL) properties of four aspect ratios of gold nanorods with surface plasmon resonance at 700, 756, 844 and 1060 nm respectively. TPL from single nanorods and Rhodamine 6G particles was measured using a laser-scanning TPL microscope. Nanorod TPL emission spectrum was recorded by a spectrometer. Quadratic dependence of luminescence intensity on excitation power (confirming a TPL process) was observed below a threshold (e.g. |
| Databáze: | OpenAIRE |
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