Local Field Enhanced Au/CuS Nanocomposites as Efficient Photothermal Transducer Agents for Cancer Treatment
Abstract:Photothermal therapy (PTT) for cancer treatment is the use of heat between 41 °C and 45 °C to damage cancer cells. As a new type of transducer agent for PPT of cancer, CuS nanoparticles have several advantages over gold nanostructures. The most favorable features are the low cost, simple and easy preparation, and small size for targeting. However, the CuS nanoparticle PTT efficacy needs to be improved for practical applications. In this study, the CuS nano-PTT efficiency was enhanced via the local field enhancement from Au nanoparticle surface plasmon coupling. The results show that absorbance of CuS nanoparticles in Au/CuS nanocomposites is enhanced about 2.2 times by Au nanoparticle surface plasmon coupling. Consequently, the PTT efficacy is enhanced and a power of 0.2 W/cm2 with a 980 nm laser was sufficient for Au/CuS nano-PTT activation. We have demonstrated for the first time that surface plasmon coupling can be used to enhance CuS nanoparticle PTT for cancer treatment.
Document Type: Research Article
Publication date: December 1, 2012
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- Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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