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| 1 | High-yield preparation of robust gold nanoshells on silica nanorattles with good biocompatiblity显示文摘Although gold nanoshells are widely considered as one of the promising photothermal nanomaterials used for biomedicine, the high cost, low yield and poor stability severely limit their potential application in clinical trials.Herein, robust gold nanoshells on silica nanorattles(GSNs)were easily prepared in a high yield by an improved seedmediated method employing polyvinylpyrrolidone(PVP) as a stabilizing and capping agent. The present method is very simple, effective and reproducible and can well control the growth process of gold nanoshells. The as-prepared GSNs have a narrow size distribution(<10 % in standard deviation). Furthermore, the utilization rate of Au in the solution used for the growth of gold nanoshells increases by 70 %than that in previous method. The resultant GSNs have a good structural stability after placing over 6 months due to the protection of PVP. More importantly, in vivo and in vitro toxic studies indicate that the GSNs have good biocompatibility. We believe that our preparation method will remarkably promote the use of gold nanoshells for biomedicine. | Changhui Fu Chaofeng He Longfei Tan Shunhao Wang Lu Shang Linlin Li Xianwei Meng Huiyu Liu | 2016 | Science Bulletin2016，61，4： | 5 |
| 2 | 局域表面等离激元-量子复合体系中量子干涉的理论研究显示文摘局域表面等离激元与量子发射体构成的复合体系具有比其单个子单元更丰富的性质和功能.本文从理论上研究了量子干涉效应对复合体系吸收和散射性质的影响以及对原子体系非线性效应的调控.首先,由于存在不同跃迁通道之间的干涉,体系支持暗表面等离激元诱导的无布居数反转增益和光强依赖的吸收谱效应.其次,结构开放性诱导的干涉使复合体系能够在纳米尺度、中等强度耦合下调控散射场的光子统计性质.最后,基于表面等离激元的各向异性珀塞尔系数,在纳米尺度演示了对于克尔非线性的调控.这些发现丰富了该复合体系的吸收和散射性质以及原子体系的非线性性质,并且有可能用于量子态制备、带通滤波器、折射率传感、光子统计调控、片上的全光非线性器件等方面. | 赵东星 陈弘毅 古英 任娟娟 龚旗煌 | 2017 | 中国科学:物理学、力学、天文学2017，47，2： | 2 |
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