Flow-injection of branched polymers inside nanopores
  Flexible chains (linear or branched) can be forced to enter into a narrow capillary by using a hydrodynamic flow. Here, we correct our earlier description of this problem by considering the progressive nature of the suction process. We find that the critical current for penetration, $J\_c$, is controlled by the entry of a single blob of the capillary size, and that its scaling structure is the same for branched and linear chains. 
Takahiro Sakaue (MSC), Elie Rapha\"el (MSC), Pierre-Gilles De Gennes,   Fran\c{c}oise Brochard-Wyart