Dissertation > Excellent graduate degree dissertation topics show

Water trace pollutants surface plasma testing technology research and experiment

Author: ZuoYueZuo
Tutor: HeSaiLingï¼›WangXiaoPing
School: Zhejiang University
Course: Optical Engineering
Keywords: enviromantal monitoring trace polluted substance detection water quality inspection surface plasmon polaritons(SPP) surface waves negetive refrective index material optical sensors small signal processing
CLC: X52
Type: PhD thesis
Year: 2006
Downloads: 292
Quote: 2
Read: Download Dissertation


Trace polluted substances detection techniques based on surface plasmon polartions (SPP) is an interdisciplinary optical research field. It comprises of optical surface plasmon resonance techniques, small signal detection techniques, optical system design, metal film deposition techniques, small signal processing. Portable field polluted substances detection device based on surface plasmon polarions is a novel optical sensor system. It changes the status that the typical SPP sensor system is too ponderous and high requirement on environmental condition, make the SPP sensor device system step out of the laboratory and become a pratical field online inspection device.The theory innovations of this dissertation include the following: The Ag-Au bi-metal SPP sensor structure is presented. The Fortran language is used for programming to simulate and optimize the structure parameters to improve the performance on sensitivity and linearity, and the device life period is also lenthed by the improvement of adhesion intensity. A novel Mach-Zehnder sensor structure enhanced by SPP is investigated. The sensitive region of the waveguide is covered with a thin Au layer. The sentivity is highly improved by SPP effect and two times higher than the typical MZ structure. The surface wave theory of negative refractive index material and its sensor feasibility are studied. The condition of existence of surface wave using negative refractive index materials is solved using the rigorous electromagnetic wave theory. Ii is shown that the surface wave can be produced for both polarizations using negative refractive index material.The experimental works of this dissertation include the following: the whole sensor device system of portable SPP traced polluted substances detection is completed. The work on optical system design and setup, control circuit fabraication and relevant software programming are finished. The detecting range of our system is 1.18-1.35(RIU) and the precision is about the scale of 10~-6(RIU). The experiments based on the device we designed are performaned and the experimental results are also discussed. Several data processing methods are compared and analysised. Duringthe periond of research the adherent processing techniques of large scale optical surface is reported, and bi-metal film desposition parameters and processing techniques are presented in this dissertation.

Related Dissertations

  1. Indoor Environment Monitoring Network System Wireless,TP274
  2. Seismic background noise method Theory and Practice,P315.3
  3. Anisotropic metamaterial transmission of electromagnetic waves in the surface properties of,O441.4
  4. Intensity-modulated Surface Plasmon Resonance Array Sensor Based on Polarization Control,TP212
  5. Investigation of Light Scattering Technique and Miniature Optical Sensor for the Measurement of Airborne Particle,TP212
  6. The Asymmetry of Diffraction Patterns from Liquid Surface Waves and the Critical Light Reflection from the Curved Liquid Surface,O363
  7. A ray tracing method based on the grid spherical wavefront,P631.443
  8. Theoretical Study on Nonlinear Characteristics of Metamaterials,O441.4
  9. Research on Technique of Surface Wave Driven Plasma Antenna and Its Array,TN820
  10. The Design of Optical Sensors Based on Quantum Dots and Visual Detection of Trace Hazardous Analytes,O657.3
  11. Study on Key Techniques for Marine Calamity Forecast System Based on Laser Interferometry,TH744.3
  12. Structure of the liquid surface wave propagation characteristics of the modulation,O353.2
  13. Numerical Simulations of the Mild Slope Equations for Coastal Waves and Studies on the Transport of Pollutants in Waves and Currents,TV139.2
  14. Studies on Effective Phase Velocity of Surface Waves,TU43
  15. Wave Propagation, Robust Control and Symplectic Method in Hamilton Systems,O316
  16. FDTD Numerical Analysis of Extraordinary Optical Transmission in Nano-Scale Periodic Metallic Structures,TG111
  17. Study on the Simulation of Agricultural Non-point Source Pollution in Huaihe River Basin in Henan Provice,X52
  18. Responses of Alocasia macrorrhiza to Different Water Stresses and Pollutants Exposures,X52
  19. A Study on Assessment and Early Warning System of Water Pollution Effect by Land Loadings in Taihu Lake Basin,X52
  20. Purifying Effect of Ecological Floating Bed to the Source Water Quality,X52
  21. Based on TM / ETM data spatial pattern of organic pollutants in water bodies change analysis,X52

CLC: > Environmental science, safety science > Environmental pollution and its prevention > Water pollution and its control
© 2012 www.DissertationTopic.Net  Mobile