Pressure Actuated Valve Test Design

1
Pressure Actuated Valve Test Design

• Objective
• Integrate an active control element into a basic
  microfluidic design
• Utilize preexisting packaging as a template for
  the design
• Concept of Design
• Gas lines under thin flexible PDMS layers
• At initial pressure, flow is blocked by small
  gate
• Removal of gas causes flexing down of PDMS
• Opens line for fluid flow under gate

2
Pressure Actuated Valve Test Design

• Device Logic
• Based on Stage 2 Design
• Uses T-section to test if directional flow can be
  obtained
• Additional line with two gates across top layer
  show if gates are a source of leakage or backflow