Leung, Siu Ling. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 60-62). / Abstracts in English and Chinese. / Table of Contents / ACKNOWLEDGEMENT --- p.4 / List of Figures --- p.8 / Chapter 1. --- Introduction --- p.11 / Chapter 1.1 --- Background --- p.11 / Chapter 1.2 --- Project Objective --- p.12 / Chapter 1.3 --- Organization of the Thesis --- p.13 / Chapter 2. --- Literature Review --- p.14 / Chapter 2.1 --- Overview of the Colloidal Gold --- p.14 / Chapter 2.2 --- Dielectrophoresis (DEP) --- p.14 / Chapter 2.2.1 --- CM factor of Single Shell Model --- p.16 / Chapter 2.3 --- Double Layer and AC Electroosmosis --- p.18 / Chapter 2.3.1 --- Double Layer --- p.18 / Chapter 2.3.2 --- AC Electroosmosis --- p.19 / Chapter 2.4 --- Electrothermal Body Force --- p.19 / Chapter 3. --- Theoretical Analysis of DEP Manipulation --- p.21 / Chapter 3.1 --- Particle Manipulation by DEP Force --- p.21 / Chapter 3.2 --- Electric Induced Fluid Flow --- p.22 / Chapter 3.2.1 --- Double Layer and AC Electroosmosis --- p.22 / Chapter 3.2.2 --- Electrothermal Body Force --- p.24 / Chapter 3.3 --- DEP Manipulation against Fluid Flow --- p.25 / Chapter 4. --- Fabrication of AuNP based Sensors --- p.28 / Chapter 4.1 --- Fabrication of Arrays of Microelectrodes --- p.28 / Chapter 4.2 --- Formation of AuNP based Pearl Chains across Microelectrodes --- p.30 / Chapter 4.2.1 --- Formation Circuit --- p.30 / Chapter 4.2.2 --- Microspotting System --- p.31 / Chapter 4.2.3 --- Results and Discussion --- p.32 / Chapter 5. --- Exploring the Critical Parameters in Controlling AuNP Pearl Chain Formation (PCF) --- p.35 / Chapter 5.1 --- Exploring the Optimum Frequencies --- p.35 / Chapter 5.1.1 --- Analyzing the observation of pearl chain formation under specific frequency ranges --- p.36 / Chapter 5.1.2 --- Conclusion on the Optimum Frequency for PCF --- p.40 / Chapter 5.2 --- Exploring the Optimum Voltages --- p.41 / Chapter 5.3 --- Influence of the Particle size on the Formation Rate --- p.43 / Chapter 6. --- Characteristics of the AuNP based Pearl Chain --- p.44 / Chapter 6.1 --- I-V Characteristics --- p.44 / Chapter 6.2 --- Thermal Sensitivities --- p.45 / Chapter 7. --- Application of the AuNP based Sensor - Airflow Sensor --- p.48 / Chapter 7.1 --- Experimental Setup --- p.48 / Chapter 7.2 --- Experimental Results --- p.49 / Chapter 7.2.1 --- Sensor Response to Air --- p.49 / Chapter 7.2.2 --- Sensor Response to Nitrogen Gas --- p.50 / Chapter 7.2.3 --- Control Experiment --- p.51 / Chapter 7.3 --- Discussions --- p.53 / Chapter 7.3.1 --- Relationship between the Measured Electric Response and Temperature --- p.54 / Chapter 7.3.2 --- Pressure-Temperature Relationship of the Sensor --- p.55 / Chapter 8. --- Conclusion --- p.57 / Chapter 9. --- Future Work --- p.58 / Chapter 9.1 --- DEP Manipulation of 2nm diameter gold nanoparticles --- p.58 / References --- p.60 / List of Publications --- p.63 / APPENDIX-I / The Clausius-Mossoti (CM) Factor --- p.64 / Chapter I-1 --- The CM factor of homogeneous dielectric spheres --- p.64 / Chapter I-2 --- The CM factor of a single shell sphere --- p.65 / APPENPIX-II / Estimating the Minimum Voltage for Electrolysis by the Nernst Equation [39] --- p.67 / Chapter II-l --- Gibb´ةs Free Energy and the Nernst Equation --- p.67 / Chapter II-2 --- Minimum Voltage Required for Electrolysis of Water with Different pH --- p.67 / Appendix-III / Temperature-Voltage Relationship of the K-type Thermocouple [40] --- p.69 / Appendix-IV / Mathlab Program --- p.70 / Chapter IV-1. --- Fluid velocity induced by AC electroosmosis --- p.70 / Chapter IV-2. --- Voltage drop across the double layer --- p.70 / Chapter IV-3. --- Fluid velocity induced by electrothermal force --- p.71 / Chapter IV-4. --- CM Factor Simulation --- p.72 / Chapter IV-5. --- Particle velocity induced by DEP force --- p.73
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_326660 |
| Date | January 2009 |
| Contributors | Leung, Siu Ling., Chinese University of Hong Kong Graduate School. Division of Mechanical and Automation Engineering. |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, bibliography |
| Format | print, 74 leaves : ill. (some col.) ; 30 cm. |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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