Next Article in Journal
Selection of Optimal Path Control Algorithms for Probe Heads Used on Five-Axis Measuring Systems
Next Article in Special Issue
Electrically Tunable Hydrogen-Bonded Liquid Crystal Phase Control Device
Previous Article in Journal
HRLB⌃2: A Reinforcement Learning Based Framework for Believable Bots
Previous Article in Special Issue
Liquid Crystal Tunable Dielectric Metamaterial Absorber in the Terahertz Range
Open AccessArticle

Fast-Tunable Terahertz Metamaterial Absorber Based on Polymer Network Liquid Crystal

1
National Key Laboratory of Advanced Display Technology, Academy of Photoelectric Technology, Hefei University of Technology, Hefei 230009, China
2
College of Mechanical and Power Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2018, 8(12), 2454; https://doi.org/10.3390/app8122454
Received: 18 October 2018 / Revised: 21 November 2018 / Accepted: 21 November 2018 / Published: 1 December 2018
(This article belongs to the Special Issue Liquid Crystal THz Photonics: Materials, Devices and Applications)
This paper introduces a tunable metamaterial absorber (MA) based on polymer network liquid crystal (PNLC) in the terahertz (THz) frequency band. Under the optimal polymerization condition, through electrical control of the orientation of the PNLC embedded in the frequency selective surface, the resonant frequency of the absorber can be tuned from 416.5 to 405.0 GHz, corresponding to fractional frequency bandwidth of 2.8%. The experimental results show that the proposed MA based on the PNLC offers an adjustment time of 10 ms and recovery time of 85 ms, which is significantly faster than the tunable metamaterial devices based on conventional nematic liquid crystal (LC). View Full-Text
Keywords: polymer network; absorber; liquid crystal; response time; terahertz polymer network; absorber; liquid crystal; response time; terahertz
Show Figures

Figure 1

MDPI and ACS Style

Yin, Z.; Wan, C.; Deng, G.; Zheng, A.; Wang, P.; Yang, Y.; Gao, S.; Yang, J.; Cai, F.; Li, Z.; Lu, H. Fast-Tunable Terahertz Metamaterial Absorber Based on Polymer Network Liquid Crystal. Appl. Sci. 2018, 8, 2454.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop