康振辉教授课题组在J. Mater. Chem. C上发表论文

题目：

Third-order nonlinear optical properties of carboxyl group dominant carbon nanodots

作者：

Liang Bai,‡^a Shi Qiao,‡^a Yu Fang,^b Jianguo Tian,^c J. Mcleod,^a Yinglin Song,*^bHui Huang,^a Yang Liu*^a and Zhenhui Kang*^a

单位：

^a Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, China. E-mail: zhkang@suda.edu.cn, yangl@suda.edu.cn

^b Department of Physics, Soochow University, Suzhou, China. E-mail: ylsong@suda.edu.cn

^c The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Teda Applied Physics School and School of Physics, Nankai University, Tianjin, China

摘要：

We quantitatively investigate the nonlinear optical (NLO) property of carbon nanodots (CNDs, less than 10 nm) by the Z-scan technique using a tunable 532 nm nanosecond laser system. These CNDs were fabricated by an electrochemical etching method from graphite rods. Our results suggested that the third-order nonlinear susceptibility x⁽³⁾ of CNDs is strongly dependent on the diameter of the CNDs apparently; the nonlinear refractive index g decreased as the size of CNDs decreased, while the nonlinear absorption coefficient b showed an opposite tendency to g. We further demonstrated that the carboxyl group on the CND surface plays a key role and has significant impact on the third-order nonlinear susceptibility x⁽³⁾.

影响因子：

4.872

分区情况：

1区  

链接：  

http://pubs.rsc.org/en/content/articlelanding/2016/tc/c6tc02313d#!divAbstract