Differences

This shows you the differences between two versions of the page.

--- process_info_pdms_devices [2021/07/15 21:36] – [Solvent Cleaning] magnuson
+++ process_info_pdms_devices [2024/09/25 22:26] (current) – kho
@@ Line 218: / Line 218: @@
 **Procedure:**
-  - Confirm that the oven is set to 80 C. Either oven in the Microfluidics Lab is acceptable.
+  - Confirm that the oven is set to 80 C. Either oven in Elings 3430 is acceptable.
   - Identify an empty oven tray to use for spill protection.
   - Carefully transport degassed elastomer to the ovens.
@@ Line 422: / Line 422: @@
   - Remove the metal lid of the sonicator bath. Check that the bath is filled to the operating level (if not, fill to the line with DI).
   - Place the plastic cutouts across the bath, resting it on the ledges that seat the lid. One cutout has 2 openings, the other has only 1.
-  - Retrieve the appropriate beakers from the drying rack above the sink in the microfluidics lab.   - Select the beakers labeled Acetone, IPA, and DI Water. Confirm that each beaker has a plastic tube / zip tie ring around it to act as a cushion.
+  - Retrieve the appropriate beakers from the drying rack above the sink in Elings 3430.   - Select the beakers labeled Acetone, IPA, and DI Water. Confirm that each beaker has a plastic tube / zip tie ring around it to act as a cushion.
   - Fill each beaker with the corresponding chemical using the solvent bottles in the cabinet underneath the fume hood.
   - Carefully seat each beaker in one of the cutouts. Confirm that the base of the container rests below the water level.
@@ Line 455: / Line 455: @@
 ----
 ==== Device Bonding ====
-Safety Considerations:
+**Safety Considerations:**
-The oven poses a burn hazard. Use protective gloves when handling.
+  * The oven poses a burn hazard. Use protective gloves when handling.
-PPE Required:
-Insulated gloves.
+**PPE Required:**
-Gloves (Latex or Nitrile)
+  * Insulated gloves.
-Eye Protection
+  * Gloves (Latex or Nitrile)
-Lab Coat
+  * Eye Protection
-Materials Needed:
+  * Lab Coat
-Activated PDMS surface (for bonding)
-Activated glass surface (for bonding)
+**Materials Needed:**
-Aluminum foil
+  * Activated PDMS surface (for bonding)
-Tools Needed:
+  * Activated glass surface (for bonding)
-Oven
+  * Aluminum foil
-Tweezers
-Procedure:
+**Tools Needed:**
-The hydrophilicity of activated surfaces decreases rapidly with time. Perform this procedure immediately after surface activation. Use clean implements. Any dirt or contamination will negatively impact the device bonding.
+  * Oven
-Using clean tweezers, carefully pick up the two pieces to be activated. Bring the activated surfaces in contact with each other.
+  * Tweezers
-Work from one corner of the device to the other, gently pressing the surface to eliminate bubbles.
-Create a tray from aluminum foil, and place the device on it. This will facilitate baking the device.
+**Procedure:**
-Bake the joined device at 120 C for 20 minutes. This will create a permanent bond between the glass and the PDMS. (A drip tray is not necessary)
+  - The hydrophilicity of activated surfaces decreases rapidly with time. Perform this procedure immediately after surface activation. Use clean implements. Any dirt or contamination will negatively impact the device bonding.
-Remove the device and let cool.
+  - Using clean tweezers, carefully pick up the two pieces to be activated. Bring the activated surfaces in contact with each other.
+  - Work from one corner of the device to the other, gently pressing the surface to eliminate bubbles.
+  - Create a tray from aluminum foil, and place the device on it. This will facilitate baking the device.
+  - Bake the joined device at 120 C for 20 minutes. This will create a permanent bond between the glass and the PDMS. (A drip tray is not necessary)
+  - Remove the device and let cool.
 ==== Port Alignment Fixture ====