TY - JOUR
T1 - Electrically switchable capillarity of ionic liquids
AU - Hu, Xiaodong
AU - Zhang, Shiguo
AU - Qu, Chao
AU - Zhang, Qinghua
AU - Lu, Liujin
AU - Ma, Xiangyuan
AU - Zhang, Xiaoping
AU - Deng, Youquan
PY - 2012/9/1
Y1 - 2012/9/1
N2 - Electrocapillarity is the basis of modern electrowetting. And room temperature ionic liquids, an increasingly important set of electrolytes and organic salts that are liquid at room temperature, are considered a novel class of electrowetting agents, because of non-significant vapor pressure, nonflammability, good thermal stability, and a wide useable temperature range. In this paper, a simple device has been fabricated to investigate the electrocapillarity of ionic liquids. It shows attractive features involving wide operating temperature and in particular high stability, fast response and good reversibility at high temperatures. Besides, electrocapillarity of ionic liquids is strongly dependent on power supply frequency. In particular, high frequency, stable, reversible and wide height of rise modulations were obtained. The phenomenon of ionic liquids-based electrocapillarity was found to be affected by the structure and physicochemical properties of ionic liquids such as density, surface tension, alkyl carbon chain length of cation, type of the anion, etc., and the efficiency could be further improved through optimal choice of ambient phase or rational design and synthesis of ionic liquids.
AB - Electrocapillarity is the basis of modern electrowetting. And room temperature ionic liquids, an increasingly important set of electrolytes and organic salts that are liquid at room temperature, are considered a novel class of electrowetting agents, because of non-significant vapor pressure, nonflammability, good thermal stability, and a wide useable temperature range. In this paper, a simple device has been fabricated to investigate the electrocapillarity of ionic liquids. It shows attractive features involving wide operating temperature and in particular high stability, fast response and good reversibility at high temperatures. Besides, electrocapillarity of ionic liquids is strongly dependent on power supply frequency. In particular, high frequency, stable, reversible and wide height of rise modulations were obtained. The phenomenon of ionic liquids-based electrocapillarity was found to be affected by the structure and physicochemical properties of ionic liquids such as density, surface tension, alkyl carbon chain length of cation, type of the anion, etc., and the efficiency could be further improved through optimal choice of ambient phase or rational design and synthesis of ionic liquids.
KW - AC electric fields
KW - Electrocapillarity
KW - height of rise
KW - high temperature
KW - ionic liquids
KW - response time
UR - http://www.scopus.com/inward/record.url?scp=84865264262&partnerID=8YFLogxK
U2 - 10.1163/156856111X600442
DO - 10.1163/156856111X600442
M3 - 文章
AN - SCOPUS:84865264262
SN - 0169-4243
VL - 26
SP - 2069
EP - 2078
JO - Journal of Adhesion Science and Technology
JF - Journal of Adhesion Science and Technology
IS - 12-17
ER -