BIGFOOT (cell birefringence)
MarcEisenmann - 21:51, Thursday 10 April 2025 (3983)
measurements of gels(ktk693, 697, 699)

[Katsuki, Marc]

Measurements goal is to better understand what structure is responsible for positive or negative birefringence.

ktk*** indicates the number of the hydrogel (not its composition)

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*negative control (acrylamide)

C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\hydrogel\ktk703\Wed, Apr 9, 2025 11-35-04 AM.txt

*ktk693

C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\hydrogel\ktk693\Wed, Apr 9, 2025 1-29-48 PM.txt

at 0.37N I forgot to change the force(0.34 ->0.37)

*ktk697

C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\hydrogel\ktk697\Wed, Apr 9, 2025 3-44-57 PM.txt

at 0.41N gel was broken

*ktk699

C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\hydrogel\ktk699\Wed, Apr 9, 2025 4-40-39 PM.txt

at 0.42N gel was broken

*without sample

C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\hydrogel\without_gel\Wed, Apr 9, 2025 5-27-39 PM.txt

Comments related to this report
MarcEisenmann - 20:13, Tuesday 15 April 2025 (3989)

[Marc, Shalika]

After some debugging (related to issue in saving data) here are the results.

 

Fig 1 is the control test (likely Arylamide). It does not match that well with previous measurements...

Fig 2 is all newly tested hydrogel.

There is clear issue with ktk693, likely due to slipping of hydrogel during the measurement.

Maybe also issue with ktk697 (large error bar in birefringence).

Images attached to this comment
3989_20250415131315_linearretardationvsstressallcontrol.png 3989_20250415131321_linearretardationvsstressall20250409.png
MarcEisenmann - 23:26, Wednesday 16 April 2025 (3994)

Another issue is that the separate temperature vi was not on.

hence all temperature are 0 on the measurements file..