We report on the reversible electrical control of the magnetic properties of a single Mn atom in an individual quantum dot. Our device permits us to prepare the dot in states with three different electric charges, 0, +1e, and -1e which result in dramatically different spin properties, as revealed by photoluminescence. Whereas in the neutral configuration the quantum dot is paramagnetic, the ele...

Quantum dot solar cells, as a promising candidate for the next generation solar cell technology, have received tremendous attention in the last 10 years. Some recent developments in epitaxy growth and device structures have opened up new avenues for practical quantum dot solar cells. Unfortunately, the performance of quantum dot solar cells is often plagued by marginal photon absorption. In thi...

Legionella pneumophila, a causative agent of bacterial pneumonia, survives inside phagocytic cells by avoiding rapid targeting to the lysosome. This bacterium utilizes a type IVB secretion system, encoded by the dot/icm genes, to replicate inside host cells. DotL, a critical component of the Dot/Icm secretion apparatus, functions as the type IV coupling protein. In contrast to most dot/icm gene...

We report upon the application of quantum dot barcodes prepared by layer-by-layer biological self-assembly of quantum dot-biotin and quantum dot-streptavidin conjugates on magnetic beads for qualitative multiplexed immunoassay.

cystic fibrosis is an autosomal recessive disease caused by a wide spectrum of mutations in the gene encoding for the cystic fibrosis transmembrane conductance regulator protein. these mutations that correlate with different phenotypes, vary in their frequency and distribution in different populations. in this study missense mutation r117h that associated with the different clinical symptoms wa...

definitive hosts of the echinococcus granulosus (e. granulosus ) parasite are carnivores such as dogs,wolves and foxes. detection of this parasite through faecal examination is not possible. in this study, dotblotting test for e. granulosus -specific coproantigens has been evaluated in dog. three 2–3-month-old puppies were treated with piperazine and then faecal samples were collected as pre-in...

From a set of d-dimensional vectors for some integer d ≥ 1, we obtain a d-dot product graph by letting each vector au correspond to a vertex u and by adding an edge between two vertices u and v if and only if their dot product au · av ≥ t, for some fixed, positive threshold t. Dot product graphs can be used to model social networks. To understand the position of d-dot product graphs in the land...

We theoretically introduce a mesoscopic pendulum from a triple dot. The pendulum is fastened through a singly occupied dot (spin qubit). Two other strongly capacitively coupled islands form a double-dot charge qubit with one electron in excess oscillating between the two low-energy charge states (1,0) and (0,1). The triple dot is placed between two superconducting leads. Under realistic conditi...

An analysis of previous studies of bilateral symmetry detection in dot patterns revealed what appeared to be an almost arbitrary choice of pattern parameters and constraints with no systemic examination of the effects of these parameters and constraints on observer performance. In Expt 1, 100-dot patterns either had no constraints on how they were plotted or had one or both of two constraints: ...