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(Stubb solus, and mending a brace.) Ha! ha! ha! ha! hem! clear my throat!—I’ve been thinking over it ever since, and that ha, ha’s the final consequence. Why so? Because a laugh’s the wisest, easiest answer to all that’s queer; and come what ...

We apply molecular dynamics simulations to quantify the effects of free surfaces and interfacial regions on crystallization in freestanding and bilayer polymer films. We show that enhanced crystal nucleation in polymer thin films is quantitatively correlated to faster local segmental dynamics induced by free surfaces. When a second layer is deposited onto a semicrystalline film, we observe rapid primary nucleation near the free surface, secondary nucleation near the semicrystalline interface, an