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The present study focus on optical sensing of breast cancer antigen 15.3 (CA 15.3) using cadmium sulphide quantum dot (CdS-QD) in saline and serum samples spiked with antigen. The surface of CdS-QD was modified by cysteamine capping followed by tagging of CA 15.3 antibody. The samples were characterised using UV-visible absorption spectroscopy (UV-VIS Spectroscopy), Fourier transform infrared spectroscopy...
Colloidal semiconductor nanocrystals exhibit physical properties that are characteristic of intermediate size scales between molecular states and solid state materials, and are often called quantum dots. Solid state semiconductor materials have been used extensively as scintillation detectors for ionizing radiation. We describe the use of semiconductor quantum dot - organic polymer composites for...
Good quality quantum dots (QDs) CdSe were prepared with a novel and non-TOP method. Quantum dots with different sizes ranging from 2 to 5 nm could be obtained by removing aliquots of reaction solution at different time intervals. The quantum dots CdSe (core) -silica (shell) was fabricated by a microemulsion method. Transmission electron microscopy (TEM) images confirmed the well monodispersed QDs...
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