In situ characterization of low-viscosity direct ink writing: stability, wetting, and rotational flows

Mathematica package files (.wl) and aggregate data for the paper "In situ characterization of low-viscosity direct ink writing: stability, wetting, and rotational flows." Code describes image analysis techniques for analyzing stability, wetting, and rotational flows in videos of a direct ink writing process. An example video set is included.

"gras" refers to the Grasshopper camera which was used to
capture videos from the side (stability/wetting)
"flea" refers to the Flea camera which was used to
capture videos from the back (rotational flows).
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VIDEO ANALYSIS WORKFLOW

1. calibration.wl
describe the nozzle geometry and substrate position for a video

2. extrusionBehaviors.wl
detect and analyze fluid surfaces for each frame in a video
(or 40-80 frames, for stable flows)

3. aggregation.wl
summarize data across many frames, describing average values
and characterizing periodicity of droplets

4. displacements.wl
analyze xz videos to find particle displacements
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TOOLBOXES

fileManagement.wl
handling this file naming convention

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DATA

summaries4.csv
list of aggregate video data

thicknesstable.csv
aggregate filament height data

dispsSummary.csv
aggregate particle displacements for rotational flows

Example video
flea_disps2_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv
displacements

flea_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.avi
video from the back

gras_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.avi
video from the side

grasGeoA_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.txt
geometry stats about video

grasHeights_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv
table of stage heights in um

grasHeights_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.tiff
visual representation of tilt

grasPositions3_linex_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv
list of fluid surface measurements over time

grasSummary4_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv
summarized fluid surface measurements over time