文摘
英文文摘
BIOGRAPHICAL SKETCH
ACKNOWLEDGMENTS
CHAPTER ONE INTRODUCTION AND OBJECTIVE
1.1 Introduction
1.1.1 Background and Significance
1.1.2 Problems
1.2 Objective and main researches
1.2.1 Objective
1.2.2 Main researches
CHAPTER TWO LITERATURE REVIEW AND EVALUATION
2.1 Smooth pads
2.1.1 Material structure
2.1.2 Fluid transport
2.1.3 Frictional anisotropy
2.1.4 Study on adhesion mechanism
2.2 Hairy pads
2.2.1 Correlative study on flies
2.2.2 Correlative study on geckos
2.3 Discussion on geometry factors
2.3.1 “Contact splitting” effect
2.3.2 Contact shape factors
2.3.3 Influence of surface roughness
2.3.4 Contact perimeter factor
2.4 Artificial fabrication of the gecko foot-hairs
2.5 Evaluation and Analysis
2.6 Chapter Summary
CHAPTER THREE EXPERIMENTS
3.1 Materials
3.1.1 Drosophila melanogaster
3.1.2 Flies
3.1.3 Polishing papers
3.2 SEM for Microstructure of insects
3.2.1 Equipment: SEM(Scan Electronic Microscope)
3.2.2 Sample Preparation for drosophila melanogaster
3.2.3 Sample Preparation for flies
3.3 AFM for surface profile of polishing papers
3.3.1 Equipment: AFM(Atomic Force Microscope)
3.3.2 Sample Preparation for Polishing papers
3.4 Measurement of adhesive force generated by drosophila melanogaster
3.4.1 Cubic glass box experiment
3.4.2 Centrifugal force testing device realized by cylinder rotation
3.4.3 Self-designed lever-like testing equipment
3.5 Chapter Summary
CHAPTER FOUR RESULTS AND DISCUSSION
4.1 SEM Results
4.1.1 SEM photographs of flies
4.1.2 SEM photographs of drosophila melanogaster
4.1.3 Micro-structure comparison of flies and drosophila melanogaster
4.2 AFM Results
4.2.1 Surface photographs of polishing paper by camera
4.2.2 Surface profile of polishing paper by AFM
4.3 Measurement results of adhesive force generated by drosophila
4.3.1 Results of cubic glass box experiment
4.3.2 Results of centrifugal force testing device
4.3.3 Results of self-designed lever-like testing equipment
4.5 Possible mechanism analysis for adhesive force generated by drosophila
4.6 Chapter Summary
CHAPTER FIVE CONCLUSION
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