Mussels（贻贝） might be a welcome addition to a
hearty1（丰盛的） seafood2 stew3（炖汤）, but their notorious ability to attach themselves to ships'
hulls4（外壳）, as well as to
piers5（防洪堤） and
moorings（系泊设备）, makes them an unwelcome sight and smell for boaters and swimmers. Now, researchers report in ACS' journal Langmuir a clearer understanding of how mussels stick to surfaces, which could lead to new classes of
adhesives6 that will work underwater and even inside the body. Shabeer Ahmad Mian and colleagues note that mussels have a
remarkable7 knack8（诀窍） for clinging onto solid surfaces underwater. That can make them a real nuisance to recreational boaters and professional fishermen, who have to scrape the hitchhikers off their
vessels9 to help them run more
efficiently10. Some types of mussels can even plug up drinking water pipes. Mussels also can stick to materials with
nonstick（不粘锅的） coatings.
Although researchers have already developed mussel-inspired glues, they still don't have a full understanding of exactly how these critters stick so well to underwater surfaces. So, Mian's team set out to investigate this mystery in
painstaking11 detail to improve these adhesives and to develop new ones.
Using complex calculations and simulations, they
determined12 that one part of the mussel "glue"
molecule13, called
catechol（苯临二酚）, pushes water
molecules14 out of the way to
bind15 directly to wide variety of surfaces. They say that this study provides a clear picture of the first step of mussel adhesion, which could pave the way for better adhesives for many applications, such as for use in surgeries. The adhesives can be nontoxic and biocompatible, says Mian.
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