Preparation and Optical Property of PZT Ferroelectric Thin Films/LaNiO_3 Thin Films Periodic Structure;

Theoretical analysis showed that under well specified conditions, electromagnetic slow wave can interact stationary with moving periodic structure,based on that the a working principle can be proposed for a class of MEMS motor and actuator.

As a result, waves can propagation along the periodic structures only with in specific frequency bands called the “Pass bands” and wave propagate is completely blocked with other frequency bands called the “Stop Bands”.

Study on Mechanical and Electromagnetic Dynamic Characteristics of Materi/als with Periodic Structures;

After analyzing the coefficient matrices of periodic structures resulted from the finite element method(FEM), a FEM with partial assemblage was put forward.

In this paper, the problem of the superposition of two film systems with periodic structures is discussed theoretically, reaching a conclusion that the cut off of the superposition has non-interference characteristics of each film system.

Influences of the changes of cross-section of coupling beam around tube on structural cycle;

Introduces the contents and uses of it·Probes into the current methods of cost estimation·Gives the cost breakdown structure of torpedo,and discuses the subject matters in the field,looks forward to its developing directions in the future.