It mainly reviews the development of the negative thermal expansion compounds in the last 10 years,and gives a brief introduction of their contraction mechanism,their synthesis methods and their application procpect.

Synthesis and characterization of thermotropic liquid crystalline polyamide;

The study of anisotropy parameters of new magnetostriction material Tb_(0.27)Dy_(0.73)Fe_(1.95);

Martensitic transformation and magnetostriction in Ni_(52)Mn_(23)Ga_(24.5)Sm_(0.5) alloy;

Giant magnetostriction of melt_spun Fe_(85) Ga_(15) ribbons;

Preparation and electrostriction of BaTiO_3/polyurethane nanocomposite elastomers;

The stress field in electrostrictive material with a circular inhomogeneity is obtained by applying the basic equations of electrostriction with the pseudo total stress and complex variable solution.

In the process of developing electrostrictive microfeed driver, it was found that the driving force in the expansion direction of the electrostriction has effect on electrostriction expansion, which increase along with the load.

A Study of the Vibration Characteristics of an Active Control Hydraulic Mount with Electrostrictive Actuator;

The electrostrictive properties were investigated by digital speckle correlation method.

Von Karman equation of axisymmetric piezoelectric laminated circular plates is obtained with a view to influence of the electrostrictive nonlinear piezoelectric effects and geometric nonlinearity.