Fig. 3.

I–V characteristics of metal–(bR monolayer)–metal junctions. (A) I–V curves of a Au/(wild-type bR)/(APTMS–AlOx–Al) junction containing oriented bR monolayer, prepared by vesicle fusion and measured at ambient conditions in the dark, upon illumination at λ > 550 nm, and dark adaptation. The arrows show that the I–V responses can be cycled between the two states. The Au pad area was 2.10⁻³ cm². (B) Plot of dark currents at a +1.0-V bias voltage for eight independent junctions prepared from bR/PC vesicles and from bR/OTG vesicles, respectively.