Abstract
A tunable negative refraction mechanism based on the properties of nematic liquid crystals is proposed. It shows that negative group refraction occurs at the interface between air and the nematic liquid crystals, and that the refraction can be adjusted by an applied electric field and by the temperature. For a nematic liquid crystal (E7, Merck), the group refraction is negative for the voltages of 1.0-2.8 V and reaches a maximum at 1.5 V. The negative group refraction decreases monotonously with increasing temperature. Such mechanism demonstrates the feasibility of tunable negative refraction devices based on liquid crystals.
| Original language | English (US) |
|---|---|
| Article number | 221918 |
| Journal | Applied Physics Letters |
| Volume | 89 |
| Issue number | 22 |
| DOIs | |
| State | Published - Dec 7 2006 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
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Tunable negative refraction in nematic liquid crystals. / Zhao, Qian; Kang, Lei; Li, Bo; Zhou, Ji; Tang, Hong; Zhang, Baizhe.
In: Applied Physics Letters, Vol. 89, No. 22, 221918, 07.12.2006.Research output: Contribution to journal › Article
TY - JOUR
T1 - Tunable negative refraction in nematic liquid crystals
AU - Zhao, Qian
AU - Kang, Lei
AU - Li, Bo
AU - Zhou, Ji
AU - Tang, Hong
AU - Zhang, Baizhe
PY - 2006/12/7
Y1 - 2006/12/7
N2 - A tunable negative refraction mechanism based on the properties of nematic liquid crystals is proposed. It shows that negative group refraction occurs at the interface between air and the nematic liquid crystals, and that the refraction can be adjusted by an applied electric field and by the temperature. For a nematic liquid crystal (E7, Merck), the group refraction is negative for the voltages of 1.0-2.8 V and reaches a maximum at 1.5 V. The negative group refraction decreases monotonously with increasing temperature. Such mechanism demonstrates the feasibility of tunable negative refraction devices based on liquid crystals.
AB - A tunable negative refraction mechanism based on the properties of nematic liquid crystals is proposed. It shows that negative group refraction occurs at the interface between air and the nematic liquid crystals, and that the refraction can be adjusted by an applied electric field and by the temperature. For a nematic liquid crystal (E7, Merck), the group refraction is negative for the voltages of 1.0-2.8 V and reaches a maximum at 1.5 V. The negative group refraction decreases monotonously with increasing temperature. Such mechanism demonstrates the feasibility of tunable negative refraction devices based on liquid crystals.
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U2 - 10.1063/1.2399345
DO - 10.1063/1.2399345
M3 - Article
VL - 89
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 22
M1 - 221918
ER -