Cooperative Suction by Vertical Capillary Array Pump for Controlling Flow Profiles of Microfluidic Sensor Chips

Autor: Emi Tamechika, Suzuyo Inoue, Michiko Seyama, Tsutomu Horiuchi, Katsuyoshi Hayashi
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Sensors, Vol 12, Iss 10, Pp 14053-14067 (2012)
Druh dokumentu: article
ISSN: 1424-8220
DOI: 10.3390/s121014053
Popis: A passive pump consisting of integrated vertical capillaries has been developed for a microfluidic chip as an useful component with an excellent flow volume and flow rate. A fluidic chip built into a passive pump was used by connecting the bottoms of all the capillaries to a top surface consisting of a thin layer channel in the microfluidic chip where the thin layer channel depth was smaller than the capillary radius. As a result the vertical capillaries drew fluid cooperatively rather than independently, thus exerting the maximum suction efficiency at every instance. This meant that a flow rate was realized that exhibited little variation and without any external power or operation. A microfluidic chip built into this passive pump had the ability to achieve a quasi-steady rather than a rapidly decreasing flow rate, which is a universal flow characteristic in an ordinary capillary.
Databáze: Directory of Open Access Journals
Pro tento záznam nejsou dostupné žádné jednotky.