Figure 4
GO film coated on a coverslip.
(a) Unexposed GO film with a SMF crossing it; (b) The GO film was exposed by a 532 nm ps laser with an average intensity of 8 W/cm2 for 15 hs and showed darker color in the center than its edge area. The insert shows the Carbon DAG® used as electrical contact for resistance measurement. (c) The fibre in b was positioned to cross two pieces of the gold film for resistance measurement. The GO film on the coverslip showed resistance of 29 kΩ(d) and 4.3 MΩ when it was coated on the SMF (e).
