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Synthesis and characterization of a new type of electro-optic polymer without carbon main chains

Zhang Y., Qiu C., Li Y., Zhang W, Xuan W

Materials Science Poland

2014

Vol. 32, No. 3

402--407

A new type of electro-optic (EO) polymer is prepared in this work. The main chain of the EO polymer is made of polyphosphazenes, and the side chain consists of carbazole based nitro azobenzene. The principle and method of preparation are given and the characteristics of this material are studied in details. The polymer with an EO coefficient of 35 pm/V has fine stability and can be easily processed. It also shows photoconductivity due to the carbazole group. This polymer thin film is obtained through performance improvement. Terahertz (THz) wave can be detected using the device, which is made of the new polymer. Owing to its fascinating properties, this new type of EO polymer has the potential to be widely applied in photorefractive materials as well as for emission and detection of THz radiation.

Development and application of the Fast Impedance Camera - a high performance dual-plane electrical impedance tomography system

Schlaberg H. I., Jia J., Qiu C., Wang M., Li H.

Zeszyty Naukowe. Elektryka / Politechnika Łódzka

2009

z. 114

87-92

This paper describes the development of a dual plane Electrical Impedance Tomography (EIT) system that is capable of acquiring data at frame rates of around 1000 dual-frames per second (dfps) providing both magnitude and phase information. The principles of the hardware operation are discussed and the operation of the control software is described. Five separate experimental setups ranging from a simple rising bubbles test to a oscillatory baffled reactor and flow velocity profiles demonstrate that fast acquisition rates provide essential information in some type of applications.