Microfluids ENGR 1182.03 Lecture. Learning Objectives of Lab  Understand capillary flow and how a capillary valve works.  Explore how the flow of fluid.

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Presentation transcript:

Microfluids ENGR Lecture

Learning Objectives of Lab  Understand capillary flow and how a capillary valve works.  Explore how the flow of fluid in a micro-channel depends on pressure and geometry.  Practice delivering and cleansing mock samples.

Logistics  Divide your team in half  One sub-team do Part A  Other sub-team start Part B (cleaning chip/chipholder)  Teams combine when Part A is done  Make sure everyone knows what the other team is doing.

Segment A of Lab 2 hAhA Step 3 hBhB Step 2 NOTE: No bubbles in water column.

Segment B of Lab 2  Remove the existing PDMS top and acrylic bottom from the chipholder.  Clean the chipholder and new acrylic chip bottom and PDMS lid in the ultrasonic cleaner following the procedure in the video and also described in Supplement 2 of the lab procedure.  Follow the procedure carefully!

Segment B  Assemble the chipholder and top and bottom using the generic printout for alignment.  Add a drop of water between the bottom of the chipholder and the acrylic chip. This will eliminate air gaps.  Plug unused staging well holes.  Practice pumping fluids with the syringe through the chip to help you design a better chip. o Make sure you have read Supplement 1 on tips for using the chipholder.  DO NOT OVER-TIGHTEN THE NUTS ON THE CHIPHOLDER!