To further understand how the molecular structure of fibril cluster contributes to the improved emulsion stability, we also compared the W/W emulsion stabilized by PEGylated single fibrils (Fig. ) and fibril clusters (Fig. ). PEGlated single fibrils are synthesized by decorating maleimide-(PEG)-OCH3 on the surface of fibrils, yielding "comb-like" fibril structure. In contrast, the 4-arm PEG cross-linked fibril clusters have "mesh-like" structure. When the two kinds of fibril structures are separately suspended into the dextran-PEG-H2O system, both the "comb-like" fibrils and "mesh-like" fibril cluster can locate at the W/W interface; however, the "comb-like" fibrils are unable to stabilize W/W emulsions as robust as fibril clusters. The superior emulsion stability after addition of "mesh-like" fibril clusters can be explained by their higher adsorption energy to the W/W interface, relative to the "comb-like" single fibrils.