User login

A thermally actuated microfluidic relay valve

  • strict warning: Only variables should be passed by reference in /home/minachr5/public_html/modules/date/date/date.theme on line 329.
  • strict warning: Only variables should be passed by reference in /home/minachr5/public_html/modules/date/date/date.theme on line 334.
  • strict warning: Only variables should be passed by reference in /home/minachr5/public_html/modules/date/date/date.theme on line 335.
  • strict warning: Only variables should be passed by reference in /home/minachr5/public_html/modules/date/date/date.theme on line 329.
  • strict warning: Only variables should be passed by reference in /home/minachr5/public_html/modules/date/date/date.theme on line 334.
  • strict warning: Only variables should be passed by reference in /home/minachr5/public_html/modules/date/date/date.theme on line 335.
Seminar Details
Presenter Name: 
Vahid Bazargan
Faculty Supervisor(s): 
Boris.Stoeber
Date: 
Thursday, April 9, 2009 - 4:00pm
Location: 
Kaiser 2020
Seminar Abstract: 

A new 2-stage valving concept for microfluidic systems based on polydimethylsiloxane (PDMS) is presented that uses the reversible gelation of a thermally responsive polymer solution in a control channel to deflect a membrane into the main flow channel for flow control. This method can control flow through a system of PDMS channels using integrated electric heating elements and only one control pressure source, compared to the off-chip pressure manifold needed in existing systems. This valve technology therefore enables the formation of portable diagnostics tools for biomedical applications and environmental monitoring allowing on-site analysis. Valves with zero leakage rates and a response time of about 5 seconds have been achieved.

Presenter Biography: