{"title":"Electrochemical bidirectional micropump for processing of liquid plugs","authors":"H. Obata, T. Kuji, M. Yokokawa, H. Suzuki","doi":"10.1109/TRANSDUCERS.2015.7181293","DOIUrl":null,"url":null,"abstract":"An electrochemical micropump based on the production and shrinkage of hydrogen bubbles was fabricated. Bidirectional movement of a solution in a microfluidic channel was realized by producing and shrinking hydrogen bubbles on a platinum black electrode. The pump could also be operated autonomously by changing the mixed potential, which was realized by coupling the reduction and oxidation of protons/hydrogen with the oxidation (dissolution) of zinc and deposition of silver on electrodes connected to the platinum black electrode. The pump could withdraw an external solution through a microneedle. Also, two integrated pumps could manipulate solution plugs in microfabricated flow channels.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2015-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/TRANSDUCERS.2015.7181293","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
An electrochemical micropump based on the production and shrinkage of hydrogen bubbles was fabricated. Bidirectional movement of a solution in a microfluidic channel was realized by producing and shrinking hydrogen bubbles on a platinum black electrode. The pump could also be operated autonomously by changing the mixed potential, which was realized by coupling the reduction and oxidation of protons/hydrogen with the oxidation (dissolution) of zinc and deposition of silver on electrodes connected to the platinum black electrode. The pump could withdraw an external solution through a microneedle. Also, two integrated pumps could manipulate solution plugs in microfabricated flow channels.
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