NAOJ GW Elog Logbook 3.2
Katsuki, Shalika
We note down the value of change in width as well, from now on. This will impropve the stress estimation. The width mesaured is in last but one column and the force measured is in last column. The uncertainity on force is 0.01N, and 0.1mm on width and thickness. The measurement on width and thickness was done using vernier caliper. The thickness was the same all the time.
input_filename = C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\Tue, Jan 21, 2025 9-55-00 AM.txt
Two formulas of hydrogel were measured.
hydrogel 1 (arylamide,1.5 mm, 25 mm )
output_filename = C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\Tue, Jan 21, 2025 10-18-53 AM.txt
hydrogel 2 (di-phenyl(YY037), 1.5 mm, 25 mm)
output_filename = C:\Users\atama\Dropbox\Cell Birefringence\Measurement data\Tue, Jan 21, 2025 11-32-51 AM.txt
The plots obtained after analysis for birefringence vs. stress.
Formula 1: Arylamide (There was a slight issue of this hydrogel slipping during measurement end)
Fig 1: Retardation vs. Stress
Fig 2: Diattenuation vs. Stress
Formula 2: Di-phenyl
Fig 3: Retardation vs. Stress
Fig 4: Diattenuation vs. Stress
I also reversed the plots to Stress vs. birefringence for better visualization.
Formula 1: Arylamide (There was a slight issue of this hydrogel slipping during measurement end)
Fig 1: Stress vs Retardation
Fig 2: Stress vs. Diattenuation
Formula 2: Di-phenyl
Fig 3: Stress vs Retardation
Fig 4: Stress vs. Diattenuation
There was a use of positive sign convention at some places in the script instead of negative one. So, the plots of linear birefringence are updated as