Abstract

Bio-actuators and sensors are increasingly employed in microscale devices for numerous applications. Unlike other artificial devices actuated by living cells or tissues, here we introduce a microvalve system actuated by the stimuli-responsive action plant, Mimosa pudica (sleepy plant). This system realizes the control of the valve to open and close by dropping and recovering responses of Mimosa pudica branch upon external physical stimulations. The results showed that one matured single uncut Mimosa pudica branch produced average force of 15.82 ± 0.7 mN. This force was sufficient for actuating and keeping the valve open for 8.46 ± 1.33 min in a stimulation-recovering cycle of 30 min. Additionally, two separately cut Mimosa pudica branches were able to keep the valve open for 2.28 ± 0.63 min in a stimulating-recovering cycle of 20min. The pressure resistance and the response time of the valve were 4.2 kPa and 1.4 s, respectively. This demonstration of plant-microfluidics integration encourages exploiting more applications of microfluidic platforms that involve plant science and plant energy harvesting.

Details

Title
Bio-actuated microvalve in microfluidics using sensing and actuating function of Mimosa pudica
Author
Aishan Yusufu 1 ; Funano Shun-ichi 2 ; Sato Asako 2 ; Ito, Yuri 2 ; Ota Nobutoshi 2 ; Yalikun Yaxiaer 3 ; Tanaka Yo 1 

 Center for Biosystems Dynamics Research (BDR), RIKEN, Laboratory for Integrated Biodevice, Suita, Japan (GRID:grid.7597.c) (ISNI:0000000094465255); Osaka University, Graduate School of Frontier Biosciences, Suita, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971) 
 Center for Biosystems Dynamics Research (BDR), RIKEN, Laboratory for Integrated Biodevice, Suita, Japan (GRID:grid.7597.c) (ISNI:0000000094465255) 
 Center for Biosystems Dynamics Research (BDR), RIKEN, Laboratory for Integrated Biodevice, Suita, Japan (GRID:grid.7597.c) (ISNI:0000000094465255); Graduate School of Nara Institute of Science and Technology, Ikoma, Japan (GRID:grid.260493.a) (ISNI:0000 0000 9227 2257) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2667967957
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.