  Single-file diffusion refers to the Brownian motion in narrow channels where
particles cannot pass each other. In such processes, the diffusion of a tagged
particle is typically normal at short times and becomes subdiffusive at long
times. For hard-sphere interparticle interaction, the time-dependent mean
squared displacement of a tracer is well understood. Here we develop a scaling
theory for adhesive particles. It provides a full description of the
time-dependent diffusive behavior with a scaling function that depends on an
effective strength of adhesive interaction. Particle clustering induced by the
adhesive interaction slows down the diffusion at short times, while it enhances
subdiffusion at long times. The enhancement effect can be quantified in
measurements irrespective of how tagged particles are injected into the system.
Combined effects of pore structure and particle adhesiveness should speed up
translocation of molecules through narrow pores.
