Study on Growth Kinetics of CdSe Nanocrystals with a New Model

A model which involves both bulk diffusion process and surface reaction process has been developed for describing the growth behaviour of nanoparticles. When the model is employed, hypothesising that either of the processes alone dominates the overall growth process is unnecessary. Conversely, the relative magnitude of contributions from both processes could be obtained from the model. Using this model in our system, the growth process of CdSe QDs demonstrated two different growth stages. During the first stage, the growth of CdSe QDs was dominated by bulk diffusion, whereas, neither the bulk diffusion process nor the surface reaction process could be neglected during the later stage. At last, we successfully modelled the Ostwald ripening of CdSe QDs with LSW theories

Microwave Synthesis of Nearly Monodisperse CdSe Nanocrystals

Abstract not Available.</jats:p

Synthesis of Near-IR Emitting CdTe/CdS/ZnS Core-Shell-Shell Quantum Dots

Abstract not Available.</jats:p

Breast Cancer Cell Imaging using Semiconductor Quantum Dots

We report the development of early stage detection of breast cancer cells using quantum dots (QDs) as fluorescent signal generator for detection. The QDs based imaging of breast cancer cells involved two kinds of antibodies: the first was for labeling the cells and the second was for imaging the breast cancer cells. Anti-Her2/neu (10Ab) was used for labeling the captured SK-BR3 cells. The second antibody against anti-Her2/neu (20Ab) that was conjugated to QDs (20Ab~QDs) forms the complete assay, SK-BR3 + 10Ab + 20Ab~QDs, to generate the fluorescent cells for imaging. Fluorescent images of the complete assay for SK-BR3 cells were evaluated under a microscope with a UV light source. The preliminary results showed that the breast cancer cell SK-BR3 in the complete assay were successfully observed as fluorescent cells that had brighter signals compared with those labeled with organic dye using similar parameters and the same number of cells.</jats:p