Dissertation > Excellent graduate degree dissertation topics show

Fluorescent Spectrum Imaging and Scattering Imaging of Single Quantum Dots

Author: BoXiaoBing
Tutor: GaiHongWei；YangShiCheng
School: Hunan University
Course: Biomedical Engineering
Keywords: Quantum dots fluorescence spectral imaging dark-field microscope scattering imaging photo-bleaching
CLC: O471.1
Type: Master's thesis
Year: 2009
Downloads: 115
Quote: 1
Read: Download Dissertation

Abstract


As a new class of fluorescence probes, quantum dots have many excellent optical properties, compare with traditional fluorescence dyes, and play more and more important roles in the fields of molecular biology, cell biology and medicine, et al.. These thesis give an overview on quantum dots, about their optical properties, preparation, modification and applications in single molecule detection; Major study of the experimental is mainly carried out the following two areas: multicolor quantum dot imaging at the same time and scattering imaging of single quantum dot:1 Single-channel imaging of two-color quantum dot. A kind of excitation light can stimulate a variety of quantum dot luminescence, if bio-molecular tag different QDs, interactions of biological molecules within living cells can be detected, we can real-time observe a specific receptor interaction. As the single-channel render black and white pixels, each pixel represents a gray value. Single-channel can only distinguish a light-emitting quantum dots. At present, detection of multi-color quantum dots is got by multi-channel detector. But the multi-channel light transmission rate will affect the quantum dots observations. In this paper, we distinguish two markers by measuring distance between zero level and one level with transmission grating, this single-channel imaging will help to studying the interaction between molecules.2 Scattering imaging of single quantum dot. Research of quantum dot is carried out under the fluorescent microscope, this paper achieve single quantum dot imaging by dark-field scattering. Scattering imaging will help to further study the optical physical properties of quantum dots, and provide an alternative detection method on similar size or difficult to detecting fluorescent nanoparticles. At the same time the experiment confirms that quantum dots occurr photobleaching by combining dark-field mode and fluorescence mode.

Related Dissertations

  1. CdSeTeS quaternary alloy quantum dots microwave-assisted aqueous phase synthesis , optical properties , and biological applications,O614.242
  2. Aqueous Synthesis and Property Studies of Citrate-stabilized CdS Quantum Dots,O614.242
  3. Hybrid Photoelectrochemical Biofuel Cell with Enzyme-CdSe-TiO2 Architecture,TM911.4
  4. Study on Belt-type ZnO Photoanode for Dye-sensitized and Quantum-dot Sensitized Solar Cells,TM914.4
  5. Studies on Synthesis and Luminescence Properties of CdSe Quantum Dots,O614.242
  6. Preparation and Modification of ZnO Quantum Dots,O614.241
  7. Study on Three-Dimensional Photonic Crystal Operate the Illumination Properties of CdTe Quantum Dots,O614.242
  8. Study on the Synthesis and the Properties of Semiconductor Quantum Dots via Poly-phase System,O614.242
  9. The Research and Application on the Enhancement of Cds Quantum Dots to the Luminol Chemiluminescence System,O657.3
  10. InP and ZnSe Based Fluorescent Quantum Dots: Synthesis and Application for Developing Fingerprint,O614.2
  11. Synthesis and Photoelectric Properties of PbS Quantum Dots,O614.433
  12. Studies on Electrochemiluminescence of Water-soluble CdTe Quantum Dots and Its Analytical Application,O614.242
  13. Aqueous Synthesis of CdTe and CdTeSe Quantum Dots for Optosensing,O614.242
  14. Quantum dot -based electrochemical biosensor and the tumor markers detection,TP212.3
  15. Researches of Preparation of Aqueouse Quantum Dots for Analytical Probe of Bisphenola,O621.2
  16. The aqueous phase synthesis of quantum dots and its application in food analysis detection,TS207.3
  17. One-dimensional Green's function method of electronic transport in mesoscopic quantum dot system,O413
  18. Synthesis and Characterization of Water-Soluble ZnSe and ZnxCd1-xSe Quantum Dots,O614.241
  19. Synthesis, Characterization and Surface Functionalization of Cdse and CdTe Quantum Dots,O413
  20. Studies on DNA Fluorescent Biosensor and Water-soluble Quantum Dots in Application of DNA Analysis,Q503

CLC: > Mathematical sciences and chemical > Physics > Semiconductor physics > Semiconductive Theory > Semiconductor quantum theory
© 2012 www.DissertationTopic.Net  Mobile