robotics.sciencemag.org/cgi/content/full/5/41/eaaz7946/DC1
Supplementary Materials for
Biofuel-powered soft electronic
skin with multiplexed and wirel
ess sensing for
human-machine interfaces
You Yu, Joanna Nassar, Changhao Xu, Jihong Min, Yiran Yang, Ada
m Dai, Rohan Doshi, Ad
rian Huang, Yu Song,
Rachel Gehlhar, Aaron D. Ames, Wei Gao*
*Corresponding author. Email: weigao@caltech.edu
Published 22 April 2020,
Sci. Robot.
5
, eaaz7946 (2019)
DOI: 10.1126/scirobotics.aaz7946
The PDF file includes:
Fig. S1. CVs of an MDB-CNT
/rGO/h-Ni electrode.
Fig. S2. Characterization of the
surface area of the BFC anodes
.
Fig. S3. Role of MDB in the prep
aration of the Pt/CNT BFC catho
des.
Fig. S4. Characterization of the
Pt/CNT and the Pt/MDB-CNT cathodes.
Fig. S5. Characterization of the bulk Pt, Pt/MDB-CNT, and Pt alloy/MDB-CNT cathodes.
Fig. S6. LSV characterization of the bioanode and the cathodes
in lactate solutions.
Fig. S7. Characterization of the s
tability of the Pt/MDB-CNT ca
thode.
Fig. S8. Characterization of the
Pt-Co alloy nanoparticles.
Fig. S9. Schematic diagram of the
energy-harvesting circuit.
Fig. S10. Schematic illustration and
component list of the elec
tronic system of the PPES.
Fig. S11. Fabrication process of the
electrochemical patch of t
he PPES.
Fig. S12. Exploded view of the multilayered electronic patch.
Fig. S13. Fabrication process of the
flexible electronic patch of the PPES.
Fig. S14. Assembly and encapsulation of the PPES.
Fig. S15. Mechanical deformation study of the BFC patch.
Fig. S16. Mechanical deformation s
tudy of the electronic patch.
Fig. S17. Power consumption breakdown of the PPES.
Fig. S18. Continuous operation of the
PPES with small capacitors in 5 to 20 mM lactate.
Fig. S19. Long-term stability of the
BFCs to charge a capacitor.
Fig. S20. Selectivity of the sensor arrays.
Fig. S21. Interactive st
udy of the urea/NH
4
+
sensor array.
Fig. S22. Interactive study of the glucose/pH sensor array.
Fig. S23. Stability of the sensor arrays.
Fig. S24. Performance of the sensor arrays under mechanical def
ormation.
Fig. S25. Influence of the temperature on the performance of en
zymatic sensors.
Fig. S26. Skin-interfaced microfluidic patch in the PPES.
Fig. S27. Investigation of the stability, reusability, and biocompability of the PPES.
Fig. S28. Operation flow of data t
ransmission processes and hum
an-machine interaction.
Fig. S29. Schematic illustration and component list of the stra
in sensor integrated PPES for
human-machine interaction.
Text S1. Mechanism of TTF-MDB bimediator in BFC.
Table S1. List of BFCs for energy-harvesting in body fluids.
References (
51
–
55
)
Other Supplementary Material for
this manuscript includes the f
ollowing:
(available at robotics.sciencem
ag.org/cgi/content/full/5/41/eaa
z7946/DC1)
Movie S1 (.mp4 format). Biofuel-p
owered electronic skin for rob
otic arm control and cargo
handling.
Movie S2 (.mp4 format). Biofuel-p
owered electronic skin for prosthesis control.
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