Detecting nanoscale size dependence in VO2 phase transition using a split-ring resonator metamaterial.
basic_science · Level V
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- Record sourced from PubMed, PMID 21306154.
- Also identified by DOI 10.1021/nl103842v.
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Abstract
We have measured the size dependence of a solid-solid phase transformation in discrete nanoscale volumes of vanadium dioxide (VO(2)) defined by split-ring resonators. By monitoring the in-coupling plasmonic mode while thermally cycling through the insulator-metal transition, we show that hysteresis width broadens with reduced interrogation volume (i.e., number of intrinsic nucleation sites). The results further imply a volume range over which both electronic and structural components of the switching exhibit similar size dependence.