Supporting Information:
Advanced Functional Materials, “
In situ
mechanical testing reveal
s periodic buckle nucleation
and propagation in carbon nanotube
bundles,” by Shelby B. Hutchens, Lee J. Hall, and Julia R.
Greer
Typical TEM images of CNTs extracted from an undeformed pillar.
In situ videos:
(included)
PillarCompression_25xspeed.mpg
PillarCompression_25xspeed.avi
A pillar compression performed at a strain rate of 0.001 s
-1
, then sped up to 25× the original rate
for easier viewing.
PillarCompression_25xspeed_data.mpg
PillarCompression_25xspeed_data.avi
Stress-strain data gathered simultaneously
with the pillar compression shown in
‘PillarCompression_25xspeed.mpg’. Both videos may
be played side-by-side to correlate the
buckling events and stress-strain humps.
PillarCompression_InitialJump.mpg
PillarCompression_InitialJump.avi
The initial portion of a pillar compression illust
rating an abrupt initial jump in displacement
while the indenter head is constraine
d to a displacement rate of ~ 300 nm/s.