Subwavelength asymmetric Au–VO<sub>2</sub> nanodisk dimer for switchable directional scattering<xref rid="cpb_27_11_117301fn1" ref-type="fn">*</xref><fn id="cpb_27_11_117301fn1"><label>*</label><p>Project supported by the National Key R&D Program of China (Grant No. 2017YFA0303800), the National Natural Science Foundation of China (Grant Nos. 11634010, 61675170, and 11874050), the Natural Science Basic Research Plan in Shaanxi Province, China (Grant No. 2017JM6022), and the Fundamental Research Funds for the Central Universities, China (Grant No. 3102017zy017).</p></fn>

Subwavelength asymmetric Au–VO₂ nanodisk dimer for switchable directional scattering**

Project supported by the National Key R&D Program of China (Grant No. 2017YFA0303800), the National Natural Science Foundation of China (Grant Nos. 11634010, 61675170, and 11874050), the Natural Science Basic Research Plan in Shaanxi Province, China (Grant No. 2017JM6022), and the Fundamental Research Funds for the Central Universities, China (Grant No. 3102017zy017).

Zhang Han-Mou, Shang Wu-Yun, Lu Hua, Xiao Fa-Jun^†, Zhao Jian-Lin^‡

(color online) Schematic view of an asymmetric dimer consisted of Au and VO₂ nanodisks. The incident plane-wave propagates in the positive z direction with the polarization along the y direction. The Au–VO₂ nanodisks with a separation gap L = 140 nm are positioned along the x axis. The sizes of these two disks are: thickness T = 10 nm, diameter D_Au = 100 nm for Au disk and D_VO₂ = 200 nm for VO₂ disk.