Work

A simple check valve for microfluidic point of care diagnostics

Year: 2016

Type: article

Abstract: laser and readily integrated into prototype and production thermoplastic devices. The check valve consists of a thermoplastic planar spring and a soft elastomeric pad that act together to seal against fluid backflow. The valve's cracking pressure can be tuned by modifying the spring's planar geometry and thickness. Seal integrity is improved with the addition of a raised annular boss beneath the elastomeric pad. To demonstrate the valve's usefulness, we employ these valves to create a finger-operated on-chip reagent reservoir and a finger-actuated pneumatic pump. We also apply this check valve to passively seal a device to enable portable detection of RNA from West Nile virus in a laser-cut device.

Source: Lab on a Chip

DOI: 10.1039/c6lc01104g

Authors: C. S. Ball, R. F. Renzi, A. Priye, R. J. Meagher

Institutions: Sandia National Laboratories California, Sandia National Laboratories

Language: English

Topic: Microfluidic and Capillary Electrophoresis Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green