A Microfluidic Ion Sensor Array.
Small
; 16(6): e1906436, 2020 02.
Article
em En
| MEDLINE
| ID: mdl-31965738
ABSTRACT
A balanced concentration of ions is essential for biological processes to occur. For example, [H+ ] gradients power adenosine triphosphate synthesis, dynamic changes in [K+ ] and [Na+ ] create action potentials in neuronal communication, and [Cl- ] contributes to maintaining appropriate cell membrane voltage. Sensing ionic concentration is thus important for monitoring and regulating many biological processes. This work demonstrates an ion-selective microelectrode array that simultaneously and independently senses [K+ ], [Na+ ], and [Cl- ] in electrolyte solutions. To obtain ion specificity, the required ion-selective membranes are patterned using microfluidics. As a proof of concept, the change in ionic concentration is monitored during cell proliferation in a cell culture medium. This microelectrode array can easily be integrated in lab-on-a-chip approaches to physiology and biological research and applications.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Microfluídica
/
Íons
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Microeletrodos
Limite:
Animals
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article