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Message ID: 71     Entry time: Wed Jul 27 14:50:20 2022
Author: Jennifer Hritz 
Type: General 
Category: Optical Contacting 
Subject: Bonding without liquids and narrowing down heating issue 

I have found that, after cleaning the glass with methanol (or even sometimes with just a dry lense-cleaning cloth), I can get glass slides to bond by rappidly rubbing them together until something sticks. This was inspired by watching "Wizard of Vaz" perform bonds on YoutTube. While cleaning, I now use enough strength to make the glass squeak, as advised by him.

Upon heating, I encountered the same issue as when I bonded them by putting a liquid (water, methanol, etc.) in the gap, which leads me to now believe that the broken bond is not due to the expansion of a liquid. Further, even at the low temperature of 60°C, placing the liquid-less sample on the hotplate breaks the bond in seconds, which I caught on video. In the attached video*, you can see that, before the heat, the bond is strong enough that I cannot push it appart with my fingers, but after the heat, it slides easily. Note that, outside of taking the video, I always lay the entire slide on the center of the metal so the sample is evenly heated.

*This is my first time attaching a video. If it didn't attach properly, I'll add it on to a later log. I also want to record myself performing the rubbing bonding technique.

Attachment 1: PXL_20220727_214658230.jpg  2.651 MB  Uploaded Wed Jul 27 16:06:46 2022  | Hide | Hide all
PXL_20220727_214658230.jpg
Attachment 2: PXL_20220727_214241668.mp4  47.419 MB  Uploaded Wed Jul 27 16:11:06 2022
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