Charge process, defect states influencing

Lead sulfide QDs of 4.5 nm in size embedded in glass and colloid matrices have been studied using picosecond pump-probe differential absorption and luminescence techniques. Energy and temporal characteristics of charge carriers relaxation processes by direct electron-hole recombination and through deep surface defect states are evaluated. An influence of type of matrix on the defect structure and relaxation rate is discussed. 

The sensor signal produced by an excitation from the enviromnent is processed by the computer brain . Actuators influence the environment correspondingly, and bring about autonomous movement. The necessary metabolism is made possible by fuel cells. In all cases the core materials of the organs are functional materials, that cany out most of their functions as a result of defects, and the behaviour of these is determined by the physical chemistry of materials. It is these interactions between the chemical environment and the charge carriers of the solid in most of the organs ( internal chemical life ) that endows solid state electrochemistry with a central role in the development and understanding of function and stability. 

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