July 2011

Design and simulation reconfigurable liquid crystal patch antennas on foam substrate

  In this article, the use of liquid crystal-based patch antenna is proposed. A first test device was, therefore, conceived in planar technology with a low-cost foam substrate. In order to have a reduced antenna structure, we have studied an antenna miniaturized by inserting slots. Moreover, the use of liquid crystal in the design of patch antennas allows adjustment of the resonance frequency. To benefit from...

Author(s):   S. Missaoui, A. Gharbi and M. Kaddour    

September 2013

Annealing and light effect on structural and electrical properties of thermally evaporated Cu2SnSe3 thin films

  Thin films of Copper Tin Selenide (Cu2SnSe3), were successfully deposited on well-cleaned glass substrates by thermal evaporation technique. The as-deposited films were annealed in flowing purified nitrogen, N2, for 2 h in the temperature range from 100 to 500°C. The annealing temperature effect on thin films crystallization and light effect on electrical conductivity had been investigated. X-ray...

Author(s):   Mohd Amirul Syafiq Mohd Yunos, Zainal Abidin Talib and Wan Mahmood Mat Yunus