Figure 3
From: A Novel Solid-State Thermal Rectifier Based On Reduced Graphene Oxide

Schematic structure and experimental results of the two-rectangular shaped solid-state thermal rectifier.
(a) Schematic view of the devices. Monitored temperatures (left axis) and current (right axis) as a function of time at points 1 and 2 of (b) positive direction and (c) negative direction under Wbot/Wtop = 4.5, respectively. (d) Measured rectification coefficient versus temperature difference |ΔT| under Wbot/Wtop = 4.5. Inset is heat power versus temperature difference |ΔT|. In Figure 3 (c) and (d), the first point is (
,
in positive direction); The second point is
(
,
in positive direction); The third point is
(
,
in positive direction); The fourth point is
(
,
in positive direction). Measured (e) heat power and (f) rectifying coefficient versus Wbot/Wtop under |ΔT| = 40 K. In Figure 3(f), the first point is Wbot/Wtop = 9/7 (
,
in positive direction); The second point is Wbot/Wtop = 9/5 (
,
in positive direction); The third point is Wbot/Wtop = 9/2 (
,
in positive direction).