Dielectric glass ceramics for antenna applications

微晶玻璃是通过控制玻璃的析晶来制造的。由于玻璃陶瓷的热性能和机械性能，玻璃陶瓷有许多应用，但最近，人们对玻璃陶瓷的一系列应用产生了极大的兴趣，这些应用从用于天线的MW介电基板到用于电力电子中电容器的高击穿强度陶瓷。该项目将探索适用于一系列应用的玻璃陶瓷新配方，旨在探索其复杂的结晶行为以及它如何在广泛的频率范围内影响性能。学生将使用X射线衍射和扫描和透射电子显微镜的组合在结构上和微观结构上对材料进行分析，并使用生成的数据来解释介电行为作为组成和温度的函数。

Glass-ceramics are fabricated by the controlled devitrification of glass. There are many applications which make use of glass ceramics for their thermal and mechanical properties but recently there has been significant interest glass-ceramic for a range of applications varying from MW dielectric substrates for antennas to high breakdown strength dielectrics for capacitors in power electronics. This project will explore new formulations of glass ceramics for a range of applications with the aim to explore their complex crystallisation behaviour and how it influences properties over a wide range of frequencies. The student will structurally and microstructurally characterise the materials using a combination of X-ray diffraction and scanning and transmission electron microscopy and use the data generated to interpret dielectric behaviour as a function of composition and temperature.