chapter 1 Cascade Formalism Applied to Network Formation in Organic/Inorganic Hybrid Gel Films -- chapter 2 Thermoreversible and Irreversible Physical Gels from Biopolymers -- chapter 3 Reversible (Physical) Gelation in the Solutions of Associating Polyelectrolytes / chapter 4 Association in Polyelectrolyte-Catanionic Vesicle Systems: From Phase Behavior to Microstructure -- chapter 5 Metal Nanoparticlc Formation in Polyelectrolyte Gels with Regular Microstructures -- chapter 6 Structure and Properties of Polyampholyte Gels / chapter 7 Polyelectrolyte/Ionomer Behavior of Polymer Gels / chapter 8 Electrical Behaviors and Mechanical Responses of Polyelectrolyte Gels / chapter 9 Synchrotron X-Ray Scattering Study on Nanostructures of Polyelectrolyte Gel/Surfactant Complexes -- chapter 10 Structural and Dynamic Behavior of Polymer Gels as Elucidated by Nuclear Magnetic Resonance Spectroscopy -- chapter 11 Electrical and Magnetic Field-Sensitive Smart Polymer Gels / chapter 12 Rhythmically Pulsing Gels Based on Chemomechanical Feedback Instability