Most of the realistic networks are weighted scale-free networks. How this structure influences the condensation on it is a challenging problem. Recently, we make a first step to discuss its condensation [Phys. Rev. E 74 (2006) 036101] and here we focus on its evolutionary process of phase transition. In order to show how the weighted transport influences the dynamical properties, we study the relaxation dynamics in a zero range process on weighted scale-free networks. We find that there is a hierarchical relaxation dynamics in the evolution and there is a scaling relation between the relaxation time and the jumping exponent. The relaxation dynamics can be illustrated by a mean-field equation. The theoretical predictions are confirmed by our numerical simulations.

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The gate length dependencies of the optical response characteristics in the optically controlled MOSFET have measured. This device was the integrated structure ofabsorption region and MOSFET region by using direct wafer bonding technique. By reducing the gate length ofMOSFET region, the transconductance of FET channel was increased, and we obtained high current modulation and responsivity by irradiation of 1.5 jim wavelength light.