Title :
Tunable flat lens with liquid metal metamaterial
Author :
Zhu, W.M. ; Song, Q.H. ; Zhang, Wensheng ; Huang, R.F. ; Ting, S.K. ; Teng, J.H. ; Zhang, X.H. ; Liu, A.Q.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
In this paper, we demonstrate tunable flat lens with liquid metal. The flat lens consists of 9 × 9 split ring resonators (SRR), which can be controlled individually by a ternary-notation control system. Each SRR metamaterial unit cell is formed by liquid metal (mercury) with approximately 1.5 μL, which offer high flexibility in geometry reconfiguration. In experiment, it demonstrates freely tuning of the sub-wavelength focus point at 20-cm focus length, which is approximately 10 times of the incident wavelength.
Keywords :
lenses; liquid metals; mercury (metal); optical control; optical focusing; optical metamaterials; optical resonators; optical tuning; Hg; SRR metamaterial unit cell; focus length; freely tuning; geometry reconfiguration flexibility; incident wavelength; liquid metal metamaterial; size 20 cm; split ring resonators; sub-wavelength focus point; ternary-notation control system; tunable flat lens; Arrays; Control systems; Lenses; Liquids; Metals; Metamaterials;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2013 7th International Congress on
Conference_Location :
Talence
Print_ISBN :
978-1-4799-1229-2
DOI :
10.1109/MetaMaterials.2013.6808938
