Room-temperature strong coupling between dipolar plasmon resonance in single gold nanorod and two-dimensional excitons in monolayer WSe<sub>2</sub><xref rid="cpb_27_9_096101fn1" ref-type="fn">*</xref><fn id="cpb_27_9_096101fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 51290271 and 11474364), the National Basic Research Program of China (Grant Nos. 2013CB933601 and 2013YQ12034506), the Natural Science Funds for Distinguished Young Scholars of Guangdong Province, China (Grant No. 2014A030306017), the Pearl River S & T Nova Program of Guangzhou, China (Grant No. 201610010084), and the Guangdong Special Support Program, China.</p></fn>

Room-temperature strong coupling between dipolar plasmon resonance in single gold nanorod and two-dimensional excitons in monolayer WSe₂**

Project supported by the National Natural Science Foundation of China (Grant Nos. 51290271 and 11474364), the National Basic Research Program of China (Grant Nos. 2013CB933601 and 2013YQ12034506), the Natural Science Funds for Distinguished Young Scholars of Guangdong Province, China (Grant No. 2014A030306017), the Pearl River S & T Nova Program of Guangzhou, China (Grant No. 201610010084), and the Guangdong Special Support Program, China.

Wen Jinxiu^{1, 4}, Wang Hao^{1, 3}, Chen Huanjun^{1, 2, †}, Deng Shaozhi^{1, 2, ‡}, Xu Ningsheng^{1, 2}

Light scattering properties of the individual gold nanorod-WSe₂ heterostructures. (a) Dark-field scattering spectra from different individual gold nanorods coupled to the same monolayer WSe₂. (b) SEM images of the gold nanorods with different aspect ratios, which correspond to the scattering spectra shown in panel (a). The aspect ratios of the nanorods from (I) to (VI) are 4.4, 3.6, 3.5, 3.4, 3.2, and 3.0, respectively. (c) Calculated spectra corresponding to the experimental ones shown in panel (a). The intensities of the scattering spectra have been normalized and shifted upward for the purpose of comparison. The grey lines shown in panels (a) and (c) indicate the exciton transition energy.