Magnetic field heating study of Fe-doped Au nanoparticles |
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| Authors: | Andy Wijaya Katherine A Brown Joshua D Alper Kimberly Hamad-Schifferli |
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| Institution: | 1. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA;2. Biological Engineering Division, Massachusetts Institute of Technology, Cambridge, MA, USA;3. Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA |
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| Abstract: | Fe-doped Au nanoparticles are ideal for biological applications over magnetic oxides due to their conjugation chemistry, optical properties, and surface chemistry. We present an AC magnetic field heating study of 8 nm Fe-doped Au nanoparticles which exhibit magnetic behavior. Magnetic heating experiments were performed on stable aqueous solutions of the nanoparticles at room temperature. The nanoparticles exhibit magnetic field heating, with a specific absorption rate (SAR) of 1.84 W/g at 40 MHz and H=100 A/m. The frequency dependence of the heating follows general trends predicted by power loss equations and is similar to traditional materials. |
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| Keywords: | 61 46 Df 87 83 +a 87 54 Br 65 80 +n 82 60 Qr |
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