Observation of saturable and reverse-saturable absorption at longitudinal surface plasmon resonance in gold nanorods

By Hendry. I. Elim, Jian Yang, J. Lee, J. Mi, W. Ji. 2006

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0.1 M cetyltrimethylammonium bromide CTAB was prepared in a conical flask. Next, 0.12 ml of ice cold 0.01 M NaBH4 solution was added to the solution all at once while stirring. The solution turned pink immediately after adding NaBH4, indicating particle formation. The particles in this solution were used as seeds within 2‐5 h after preparation. Second, 5 ml 110 3 M HAuCl4 and 5 ml 0.2 M CTAB were mixed together in a clean beaker. Then, 0.25 ml 0.004 M AgNO3 solution and 0.065 ml of 0.0788 M fresh ascorbic acid solution were added into the solution in turn. It was found that the solution turned from orange to colorless after the addition of ascorbic acid. Finally, 0.020 ml of the seed solution was added. Within 30 min, the color of the

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/fdc07e27eba13ee0bfc5402fb0bc0c6b23708ae1