|
|
|
| Self-adaptive control of smart hydrogels to water flow |
| ;;; |
| 中国科学院金属研究所 |
|
Cite this article:
;. Self-adaptive control of smart hydrogels to water flow. Chin J Mater Res, 2005, 19(1): 42-46.
|
|
|
Abstract Inspiration is from the plant root adjusting self-adaptively its structure
and function according to the change of water content in soil; a macroporous
polyvinyl formal hydrogel (PVFM) with water--content sensitivity was synthesized,
and utilized as sensor and actuator to control automatically the drip--irrigation flow.
PVFM hydrogel shows rather fast swelling/deswelling rate, and its mechanical behavior
is sensitive to the change of water content, as a result the flow rate is modulated
accordingly. This smart hydrogel can control self--adaptively water flow according to
humidity of soil; the on--off cycle of flow control is less than 1 hour. It has the
large potential applications in the aired regions for water-saving irrigation,
humidity adjustment, desert control and so on.
|
|
Received: 16 March 2005
|
|
|
1 ZHANG Suiqi, SHAN Lun, Chin. J. Appl. Enviorn. Biol., 7(4), 396(2001)(张岁岐,山仑,应用与环境生物学报,7(4),396(2001))
2 WANG Huafang, ZHANG Jianhua, LIANG Jiansheng, YIN Weilun, Chin. Sci. Bull., 44(19), 2053(1999)(王华芳,张建华,梁建生,尹伟伦,科学通报,44(19),2053(1999))
3 SHEN Feng, YANG Lifang, CHENG Guoxiang, YAO Kangde, Chin. J. Mater. Res., 14(1), 1(2000)(沈锋,杨丽芳,成国祥,姚康德,材料研究学报,14(1),1(2000))
4 D.Beebe, J.Moore, J.Bauer, Q.Yu, R.Liu, C.Devadoss, B.Jo, Nature, 404, 588(2000)
5 Q.Yu, J.Bauer, J.Moore, App. Phys. Lett., 78(17), 2589(2001)
6 K.Arndt, D.Kuckling, A.Richter, Polym. Adv. Technol, 11, 496(2000)
7 A.Baldi, Y.Gu, P.Loftness, R.Siegel, B.Ziaie, A Hydrogel-Actuated Smart Microvalve with a Porous Dif- fusion Barrier Back-Plate for Active Flow Control, Proceedings 15th Int. IEEE Conference on Microelec-tromechanical Systems, 419(2002)
8 BAO Xinzhong, ZHANG Yueting, HU Shaohua, Vinyl. Commun., 18(3), 1(1998)(包新忠,章悦庭,胡绍华,维伦通讯,18(3),1(1998))
9 L.Treloar, The physics of rubber elasticity, third edition, (Oxford, Clarendon Press, 1975)
10 E.B.Wylie, V.L.Streeter, Fluid Transients (New York, Mcgraw-Hill International Book Company, 1978)
11 L.Leyton, Fluid Behavior in Biological Systems (Oxford, Oxford University Press, 1975)
12 WU Yunpeng, LIANG Zijun, Biorheology (Beijing, Higher Education Press, 1988)(吴云鹏,梁子钧,生物流变学(北京,高等教育出版社,1988))
13 ZENG You, WANG Ruichun, ZHOU Benlian, J. Funct. Mater. Dev., 10(4), 459(2004)(曾尤,王瑞春,周本濂,功能材料与器件学报,10(4),459(2004)) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
