Nanoscopic particles resist full encapsulation, simulations show

It may seem obvious that dunking relatively spherical objects in a sauce -- blueberries in melted chocolate, say -- will result in an array of completely encapsulated berries. Relying on that concept, fabricators of spherical nanoparticles have similarly dunked their wares in protective coatings in the belief such encapsulations would prevent clumping and unwanted chemical interactions with solvents. Unfortunately, reactions in the nanoworld are not logical extensions of the macroworld, researchers have found.

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