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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

study of electrorheological fluid by using the dipolar model =: 利用電偶模型對電變流流體作分析. / 利用電偶模型對電變流流體作分析 / A study of electrorheological fluid by using the dipolar model =: Li yong dian ou mo xing dui dian bian liu liu ti zuo fen xi. / Li yong dian ou mo xing dui dian bian liu liu ti zuo fen xi

January 1998 (has links)
Wan Tsz Kai, Jones. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references (leaves [81]-83). / Text in English; abstract also in Chinese. / Wan Tsz Kai, Jones. / Abstract --- p.i / Acknowledgement --- p.iii / Contents --- p.iv / List of Figures --- p.vii / List of Tables --- p.xii / Chapter Chapter 1. --- Introduction --- p.1 / Chapter 1.1 --- What is an electrorheological fluid? --- p.1 / Chapter 1.2 --- Overview of recent works on ER fluids by using the dipolar model --- p.2 / Chapter 1.3 --- Objectives of the thesis --- p.3 / Chapter Chapter 2. --- Justification of the dipolar model --- p.6 / Chapter 2.1 --- Derivation of the dipolar factor --- p.6 / Chapter 2.2 --- Modification of the dipolar factor for a pair of polarized spheres --- p.7 / Chapter 2.2.1 --- Image charge for a conducting sphere --- p.8 / Chapter 2.2.2 --- Difference equation for a pair of equal spheres: point charge consideration --- p.10 / Chapter 2.2.3 --- Induced image dipoles for a pair of conducting spheres --- p.13 / Chapter 2.3 --- Force and energy between a pair of polarized spheres --- p.16 / Chapter 2.3.1 --- Calculation of multipole force by the thermodynamic approach --- p.17 / Chapter 2.3.2 --- Calculation of multipole force by the energy consideration --- p.18 / Chapter 2.3.3 --- Comparison of the multipole force with the force between two point dipoles --- p.19 / Chapter 2.3.4 --- Results and Discussion --- p.22 / Chapter Chapter 3. --- Dielectric response of ER fluids --- p.26 / Chapter 3.1 --- Effective dielectric response of two-component systems: Maxwell- Garnett theory --- p.27 / Chapter 3.1.1 --- Formalism and the dilute limit --- p.27 / Chapter 3.1.2 --- Maxwell-Garnett approximation --- p.29 / Chapter 3.2 --- Effective dielectric response of three-component systems: spectral representation --- p.31 / Chapter 3.2.1 --- Generalized Maxwell-Garnett approximation --- p.31 / Chapter 3.2.2 --- Spectral representation of three-component systems --- p.33 / Chapter 3.3 --- "Effective dielectric response of three-component systems: dielectric core coated with, a liquid water shell embedded in a host medium" --- p.37 / Chapter 3.3.1 --- Poles and Residues --- p.37 / Chapter 3.3.2 --- Contribution of the resonant terms --- p.39 / Chapter 3.3.3 --- Contribution of the non-resonant term --- p.43 / Chapter 3.4 --- Effective dielectric response of three-component systems: dielectric core coated with a metallic shell embedded in a host medium --- p.45 / Chapter 3.5 --- Effective dielectric response of three-component systems: Metallic core coated with a dielectric shell embedded in a host medium --- p.47 / Chapter 3.6 --- Conclusion --- p.49 / Chapter Chapter 4. --- System of distributed shell thickness --- p.51 / Chapter 4.1 --- Numerical solution of the spectral density of constant shell thickness --- p.51 / Chapter 4.2 --- Spectral density of distributed shell thickness --- p.53 / Chapter Chapter 5. --- Anisotropic three-component systems --- p.60 / Chapter 5.1 --- Generalized Maxwell-Garnett approximation for anisotropic structure --- p.60 / Chapter 5.2 --- Anisotropic Maxwell-Garnett formula --- p.63 / Chapter 5.3 --- Spectral representation for anisotropic microstructures --- p.65 / Appendix A. Potential energy function and dipolar factor TO --- p.70 / Appendix B. Ground state structure of an ER fluid --- p.72 / Chapter B.1 --- Structure formation due to dipole interaction --- p.72 / Chapter B.2 --- Dipole energy for other lattice structures --- p.75 / Appendix C. Yield stress and shear modulus --- p.78 / Bibliography --- p.81
2

Physics of field-responsive fluids: 場致反應液體的物理理論. / 場致反應液體的物理理論 / CUHK electronic theses & dissertations collection / Physics of field-responsive fluids: Chang zhi fan ying ye ti de wu li li lun. / Chang zhi fan ying ye ti de wu li li lun

January 2001 (has links)
Wan Tsz Kai, Jones. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (p. [91]-95). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese. / Wan Tsz Kai, Jones.
3

Theoretical study of electrorheological fluids /

Huang, Xianxiang. January 2004 (has links)
Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 108-115). Also available in electronic version. Access restricted to campus users.
4

Electrorheological fluid interfaces in mechatronic devices

黃俊祺, Wong, Chun-kay, Edward. January 1998 (has links)
published_or_final_version / Industrial and Manufacturing Systems Engineering / Doctoral / Doctor of Philosophy
5

Effects of structure and dynamics on the macroscopic physical properties of composite media.

January 2002 (has links)
Lo Chi-keung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references (leaves 69-72). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- What is an electrorheological fluid? --- p.1 / Chapter 1.2 --- Overview of recent theoretical studies on ER fluids --- p.2 / Chapter 1.3 --- Objectives of the thesis --- p.4 / Chapter 2 --- Review of some established macroscopic concepts --- p.8 / Chapter 2.1 --- Local field and depolarization tensor --- p.8 / Chapter 2.2 --- Clausius-Mossotti equation --- p.10 / Chapter 3 --- Ewald-Kornfeld formulation and effects of geometric anisotropy on local field distribution --- p.12 / Chapter 3.1 --- The development of the Ewald-Kornfeld method --- p.12 / Chapter 3.2 --- General Ewald-Kornfeld Formalism - point dipole approximation --- p.13 / Chapter 3.3 --- Ewald-Kornfeld Formalism - tetragonal lattice of point dipoles --- p.14 / Chapter 3.4 --- Numerical Results --- p.16 / Chapter 3.5 --- Contact with macroscopic concepts --- p.18 / Chapter 3.5.1 --- Generalized Clausius-Mossotti equation --- p.18 / Chapter 3.5.2 --- Onsager reaction field --- p.19 / Chapter 3.6 --- Figures --- p.22 / Chapter 4 --- Field-induced structure transformation in ER solid --- p.24 / Chapter 4.1 --- Ewald-Kornfeld Formalism - body-centered tetragonal lattice --- p.25 / Chapter 4.2 --- Effects of structure transformation on the local field --- p.27 / Chapter 4.3 --- Structure transformation via rotating electric fields --- p.28 / Chapter 4.4 --- Competitions between FCC and HCP --- p.30 / Chapter 4.5 --- Figures --- p.31 / Chapter 5 --- Geometric anisotropy from distortive lattices: ferrodistortive and antidistortive systems --- p.34 / Chapter 5.1 --- Ferrodistortive lattice --- p.35 / Chapter 5.1.1 --- Sublattice interaction tensors --- p.36 / Chapter 5.1.2 --- Effective polarizability and Clausius-Mossotti equation --- p.37 / Chapter 5.2 --- Antidistortive lattice --- p.39 / Chapter 5.2.1 --- Sublattice interaction tensors --- p.40 / Chapter 5.2.2 --- Sublattice dipole moments --- p.41 / Chapter 5.2.3 --- Effective polarizability and polarization catastrophe --- p.43 / Chapter 5.2.4 --- Depolarization field --- p.44 / Chapter 5.3 --- Experimental realization - colloidal self-assembly --- p.45 / Chapter 5.4 --- Figures --- p.46 / Chapter 6 --- Discussion and conclusion --- p.52 / Chapter 6.1 --- Discussion on our work and possible future extension --- p.52 / Chapter 6.2 --- Conclusion --- p.54 / Chapter A --- Piezoelectric coefficients by Ewald-Kornfeld formulation --- p.57 / Chapter B --- Alternative formulation for Ewald-Kornfeld formulation by di- rect calculations of the dipole interaction tensor --- p.59 / Chapter C --- Ewald-multipole formulation --- p.63 / Chapter C.1 --- Multipole fields --- p.64 / Chapter C.2 --- Coupled dipole-quadrupole lattice --- p.66 / Bibliography --- p.69
6

Dynamic electrorheological effects of rotating spheres. / 旋转颗粒的动态电流变效应 / Dynamic electrorheological effects of rotating spheres. / Xuan zhuan ke li de dong tai dian liu bian xiao ying

January 2005 (has links)
Shen Lei = 旋转颗粒的动态电流变效应 / 沈雷. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 68-72). / Text in English; abstracts in English and Chinese. / Shen Lei = Xuan zhuan ke li de dong tai dian liu bian xiao ying / Shen Lei. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- ER fluids and dynamic ER effects --- p.1 / Chapter 1.2 --- Negative ER effects and Quincke Rotations --- p.3 / Chapter 1.3 --- Recent works on ER fluids --- p.5 / Chapter 1.4 --- Objectives of the thesis --- p.8 / Chapter 2 --- Dynamic ER effects of two-body systems --- p.10 / Chapter 2.1 --- Formalism under the point-dipole approximation --- p.10 / Chapter 2.2 --- Numerical results under the point-dipole approximation --- p.20 / Chapter 2.3 --- Discussions under the MID approximation --- p.25 / Chapter 2.4 --- Conclusion --- p.28 / Chapter 3 --- Dynamic ER effects of periodic boundary systems --- p.30 / Chapter 3.1 --- Ewald-Kornfeld formulation --- p.31 / Chapter 3.2 --- Structure transformation in ER solids induced by particle rota- tions --- p.36 / Chapter 3.3 --- Structure transformation in ER solids induced by field rotations --- p.42 / Chapter 3.4 --- Discussion and conclusion --- p.45 / Chapter 4 --- Dynamic ER effects of Quincke rotations --- p.48 / Chapter 4.1 --- Formalism --- p.49 / Chapter 4.2 --- Molecular dynamics simulations --- p.51 / Chapter 4.3 --- Numerical results --- p.54 / Chapter 4.4 --- Self assembly of Quincke rotors --- p.61 / Chapter 4.5 --- Discussion and conclusion --- p.62 / Chapter 5 --- Summary --- p.65 / Bibliography --- p.68 / Chapter A --- Derivation of the multiple image expression --- p.73 / Chapter A.1 --- Images of a point charge --- p.73 / Chapter A.2 --- Images of a point dipole --- p.74 / Chapter A.3 --- Images of a pair of spheres --- p.76 / Chapter B --- Optimizations of the Ewald summation --- p.81
7

Study of interparticle force in ER fluids =: 電變流體中粒子相互作用力之硏究. / 電變流體中粒子相互作用力之硏究 / Study of interparticle force in ER fluids =: Dian bian liu ti zhong li zi xiang hu zuo yong li zhi yan jiu. / Dian bian liu ti zhong li zi xiang hu zuo yong li zhi yan jiu

January 2001 (has links)
Siu Yuet Lun. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves [51]-54). / Text in English; abstracts in English and Chinese. / Siu Yuet Lun. / Abstract --- p.i / Acknowledgments --- p.ii / Contents --- p.iii / List of Figures --- p.v / List of Tables --- p.vii / Chapter Chapter 1. --- Introduction --- p.1 / Chapter 1.1 --- What is an electrorheological fluid? --- p.1 / Chapter 1.2 --- Overview of recent theoretical studies of ER fluids --- p.2 / Chapter 1.3 --- Objectives of the thesis --- p.3 / Chapter Chapter 2. --- Justification of the DID model --- p.5 / Chapter 2.1 --- Review of the multiple image method --- p.6 / Chapter 2.1.1 --- The development of the multiple image method --- p.6 / Chapter 2.1.2 --- Image dipole --- p.7 / Chapter 2.1.3 --- Total dipole moment --- p.8 / Chapter 2.2 --- Comparison of the multiple image method with the Klingenberg's force functions --- p.11 / Chapter 2.3 --- Interparticle force in polydisperse ER fluids --- p.16 / Chapter Chapter 3. --- Computer simulations of ER fluids in the DID model --- p.22 / Chapter 3.1 --- The natural scales in the simulation --- p.23 / Chapter 3.2 --- The aggregation for a pair of spheres --- p.25 / Chapter 3.2.1 --- In uniaxial field --- p.25 / Chapter 3.2.2 --- In rotating field --- p.28 / Chapter 3.3 --- The aggregation for three and four spheres in the rotating field --- p.31 / Chapter Chapter 4. --- Computer simulation of morphology in the DID model --- p.35 / Chapter 4.1 --- Hard-core repulsion --- p.35 / Chapter 4.2 --- Periodic boundary conditions --- p.36 / Chapter 4.3 --- Morphology in DID model and PD model --- p.38 / Chapter Chapter 5. --- Conclusion --- p.43 / Chapter Appendix A. --- Analytic results of the equation of motion --- p.44 / Chapter A.1 --- Analytic solution for two spheres --- p.45 / Chapter A.2 --- Analytic solution for three spheres in a chain --- p.45 / Chapter A.3 --- Analytic solution for three spheres in an equilateral triangle --- p.47 / Chapter A.4 --- Analytic solution for four spheres in a square --- p.48 / Chapter Appendix B. --- Table of values of the time steps --- p.50 / Bibliography --- p.51
8

Nano-structured and surface polymerized magnetorheological fluid /

Hu, Ben. January 2005 (has links)
Thesis (Ph. D.)--University of Nevada, Reno, 2005. / "December 2005." Includes bibliographical references (leaves 155-166). Online version available on the World Wide Web. Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2005]. 1 microfilm reel ; 35 mm.
9

Electrorheological fluid interfaces in mechatronic devices /

Wong, Chun-kay, Edward. January 1998 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1998. / Includes bibliographical references.
10

Electrorheology of concentrated nematic solutions of rodlike polymers molecular weight and polydispersity dependence /

Acevedo, Aldo. January 2006 (has links)
Thesis (Ph.D.)--University of Delaware, 2006. / Principal faculty advisor: Annette D. Shine, Dept. of Chemical Engineering. Includes bibliographical references.

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