Abstract: In this work, the gold nanoparticles were specifically embedded on the surface of silicon materials by the reaction reagents of HAuCl4 solution and L-Cysteine based on built-in current and Au-S interaction, and then controlled experiments were arranged to research the effects of different reaction conditions on the fabrication of gold nanoparticles. Furthermore, the fluorescence experiments and silicon nanowire field effect transistor were designed for further study. The results showed the surface of silicon materials which were firstly treated by HF and dipped into 0.5 mmol/L HAuCl4 solution with HAuCl4 and L-Cysteine concentration ratio of 3∶1 for 3 min was coated by uniform, firm gold nanoparticles. Based on the results of fluorescence experiments, the surface of gold nanoparticles had been modified by amidogen functionally, which promoted the application of gold nanoparticles-coated silicon materials on bio-detection biolabeling. Besides, based on the verification of silicon nanowire field effect transistor, this fabrication way of gold nanoparticles-coated silicon materials is of high specificity, which promoted the application of gold nanoparticles-coated silicon materials on infectious disease and health tests.
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2017, Vol. 31 
