chapter 1 Introduction -- chapter 2 Nonlinear carrier transport in semiconductors -- chapter 3 S-shaped negative differential conductivity and the nonequilibrium phase transition -- chapter 4 Nonlinear dynamics, stability and instability in carrier transport -- chapter 5 Observation of chaos and experimental methods -- chapter 6 Characterizing chaos -- chapter 7 Novel phenomena in semiconductors -- chapter 8 Towards a second new paradigm of semiconductor chaos.