Experimental study using optoacoustic spectroscopy (OAS) on spherical gold nanoparticles |
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Authors: | Horacio Lamela Vincent Cunningham Daniel C Gallego |
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Institution: | 2. Munich School of Bioengineering, Technische Universität München (TUM), Ismaningerstr. 22, 81675 München, Germany;3. Research Unit of Analytical Pathology, Institute of Pathology, Helmholtz Zentrum München, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany;4. ESPCI Paris-Tech, PSL Research University, CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris, France |
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Abstract: | In this paper a spectroscopic characterisation method based on the optoacoustic technique has been used to investigate the optical properties of two separate spherical gold nanoparticle (SGNP) solutions where an absorption peak located at 520 nm has been observed. This analysis has been carried out over the visible wavelength range from 410 to 650 nm using a Q-switched Nd:YAG pumped optical parametric oscillator (OPO). To verify the reliability of optoacoustic spectroscopy (OAS), the results obtained have been compared to those from more standard and limited spectrophotometer and reference collimated optical transmission schemes, where good agreement is shown. The experimental procedure presented here demonstrates the potential of this technique for integration along with optoacoustic imaging methods to identify physiological information for non-destructive in-vivo applications. |
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