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Regulating self-organizing nanostructures via external mechanism
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Image of FIG. 1.
FIG. 1.

Linear stability analysis suggests that the external mechanism can change the stability of the film and lead to nanostructure formation in the otherwise stable films, where ; left: stable film with , where can be changed to negative by external mechanism; right: unstable film with .

Image of FIG. 2.
FIG. 2.

Numerical simulation of P(VDF-TrFE) film with initial thickness of 8 nm; left: the film is stable and no nanostructure formation is observed when it is subjected to no external mechanism; only small variation in film thickness is observed; right: regular array of nanowells is observed when an external mechanism of and is applied.

Image of FIG. 3.
FIG. 3.

Numerical simulation of nanomesa formation in P(VDF-TrFE) film of 3 nm thick with and without external mechanism; top left: random morphology and distribution when no external mechanism is applied; top right: external mechanism of and short wavelength is applied, which does not change the nanomesa morphology; bottom left: external mechanism of long wavelength , which does not change the nanomesa morphology; bottom right: regular array of nanomesas is formed when the wavelength is , comparable to the intrinsic size of nanomesas.

Image of FIG. 4.
FIG. 4.

Regulating of the size, morphology and distribution of nanomesas in P(VDF-TrFE) films with initial thickness of 3 nm; top left: smaller nanomesas obtained by external mechanism with ; top right: larger nanomesas obtained by external mechanism with ; bottom: one-dimensional nanowires are obtained by an external mechanism varying only in one dimension.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Regulating self-organizing nanostructures via external mechanism