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. Author manuscript; available in PMC: 2014 Oct 2.
Published in final edited form as: Nat Commun. 2014;5:3206. doi: 10.1038/ncomms4206

Figure 3. Prolonged intracellular access duration by IrOx nanotube electrodes.

Figure 3

a, Intracellular recording of HL-1 action potentials by IrOx nanotube and Au nanopillar electrodes for the first 60 s after electroporation. b, Normalized intracellular recorded amplitude for the first 60 s after electroporation. c, Time plot of recorded action potentials by IrOx nanotubes show intracellular access for almost 1 hour in a single recording session. Green arrows indicate sudden amplitude step drops. d, Expanded views of the five amplitude drops. Red lines are drawn to guide eyes. e, Statistical comparison of intracellular access duration between Au nanopillar and IrOx nanotube electrodes. IrOx nanotubes afford more than an order of magnitude longer intracellular access than Au nanopillars. f, Distributions of drop durations.