77 research outputs found
Plasmonic mediated nucleation of resonant nano-cavities in metallic layers
We predict plasmonic mediated nucleation of pancake shaped resonant
nano-cavities in metallic layers that are penetrable to laser fields. The
underlying physics is that the cavity provides a narrow plasmonic resonance
that maximizes its polarizability in an external field. The resonance yields a
significant energy gain making the formation of such cavities highly favorable.
Possible implications include nano-optics and generation of the dielectric bits
in conductive films that underlie the existing optical recording phase change
technology.Comment: 4 pages, 3 figure
A phenomenological theory of nonphotochemical laser induced nucleation
Our analysis of the experimental data related to nonphotochemical laser
induced nucleation in solutions leads to the inevitable conclusion that the
phase transformation is initiated by particles that are metallic in nature.
This conclusion appears paradoxical because the final products are dielectric
crystals. We show that the experimental results are well accounted for by the
theory of electric field induced nucleation of metallic particles that are
elongated in the direction of the field. However, new physical and chemical
insights are required to understand the structure of the metallic precursor
particles and the kinetics of subsequent dielectric crystallization.Comment: 5 pages 4 figure
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