Figure : A schematic representation of a two-component system in a 2D box (red square) when a small disc (green circle) is next to the wall (a) and a large disc (blue circle) is next to the wall (b). The corresponding excluded volumes of small and large discs are represented with green and blue dashed circles. All the possible accessible microscopic states of the phase space for large disc (a) and small disc (b) are partitioned with red dashed lines in the system.