Alexander Stollenwerk

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We use a scanning tunneling microscope to probe single-electron charging phenomena in individual CdSe/ ZnS ͑core/shell͒ quantum dots ͑QDs͒ at room temperature. The QDs are deposited on top of a bare Au thin film and form a double-barrier tunnel junction ͑DBTJ͒ between the tip, QD, and substrate. Analysis of room-temperature hysteresis in the current-voltage(More)
We consider the problem of encoding a finite set of vectors into a small number of bits while approximately retaining information on the angular distances between the vectors. By deriving improved variance bounds related to binary Gaussian circulant embeddings, we largely fix a gap in the proof of the best known fast binary embedding method. Our bounds also(More)
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