Super-resolution microscopy, the imaging of features below the Abbe diffraction limit, has been achieved by a number
of methods in recent years. Each of these methods relies on breaking one of the assumptions made in the derivation of
the diffraction limit. While uniform spatial illumination, linearity and time independence have been the most common
cornerstones of the Abbe limit broken in super-resolution modalities, breaking the ‘classicality of light’ assumption as a
pathway to achieve super-resolution has not been shown. Here we demonstrate a method that utilizes the antibunching
characteristic of light emitted by Quantum Dots (QDs), a purely quantum feature of light, to obtain imaging beyond the
diffraction limit.
Measuring such high order correlations in the emission of a single QD necessitates stability at saturation conditions
while avoiding damage and enhanced blinking. This ability was facilitated through new understandings that arisen from
exploring the QD ‘blinking’ phenomena. We summarize here two studies that contributed to our current understanding
of QD stability.
There has been significant interest in the development of multicomponent nanocrystals
formed by the assembly of two or more different materials with control over size, shape,
composition, and spatial orientation. In particular, the selective growth of metals on the tips of
semiconductor nanorods and wires can act to couple the electrical and optical properties of
semiconductors with the unique properties of various metals. Here, we outline our progress on the
solution-phase synthesis of metal-semiconductor heterojunctions formed by the growth of Au, Pt, or
other binary catalytic metal systems on Cd- and Pb-calcogenide nanocrystals.
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