fig6
![Advances in printing techniques for thermoelectric materials and devices](https://image.oaes.cc/939d1519-dd22-4b7e-b4b2-916fec41ef0b/ss3020.fig.6.jpg)
Figure 6. (A) Illustration of R2R printing of flexible thermoelectric devices. R2R printed thermoelectric films on (B) UV-treated plastic substrate and (C) plasma-treated plastic substrate. The inset images show the contact angle between substrate and the inks[91];