  The model of thermal rectifier based on the asymmetry of interaction of the
molecular chain ends with thermostats is proposed in this work. The
rectification mechanism is not related to the chain asymmetry, but to the
asymmetry of the interaction of chain ends with thermostats, for instance, due
to different lengths of the end thermostats. The chain can be homogeneous, it
is only important that the thermal conductivity of the chain should depend on
temperature strict monotonically. The effect is maximal when convergence of the
thermal conductivity with increasing length just begins to manifest itself. In
this case, the efficiency of thermal rectification can reach 25%. These
conditions are met for carbon nanoribbons and nanotubes. Therefore, they can be
ideal objects for the construction of thermal rectifiers based on the
asymmetric interaction with thermostats. Numerical simulation of heat transfer
shows that the rectification of heat transfer can reach 14% for nanoribbons and
22% for nanotubes.
