Investigation of syringe-based Direct Write (DW) for antenna manufacture
Miniature products and components are in great demand in the electronics industry and Direct Write (DW) has become the subject of interest due to its capability of printing small features and offering low manufacturing cost. DW technologies, a subset of rapid prototyping, have been applied to many applications in electronics, aeronautics, photonics and biomedical engineering. Among them, syringe deposition technology is a promising technique, providing precision deposition of materials with
... ous viscosities, on-line design changes and ability to write on non-planar substrates. In addition, the low amount of material waste, low cost investment in production facilities and the versatility of the system make syringe-based DW technology ideal for low-cost electronics production especially for small batch production. Furthermore, the data-driven nature of digital printing manufacturing methods allows fast manufacturing runs and a short time cycle from design to manufacture which all translate into shorter delivery times in manufacturing. Syringe-based DW technology is a new and promising technology and hence its capabilities have never been exploited comprehensively. The objective of this project was to investigate the possible use of a syringe-based DW technology by means of automatic syringe deposition system in conjunction with heating process to fabricate electronic components such as strain gauges, antenna and others. By doing this, the aim is to help improve the fundamental knowledge of syringe-based DW process behaviour and functional performance of components produced. particular acknowledgements are given to the following people and organisations. Firstly I would like to thank my supervisors, Professor Ken Watkins and Dr Geoff Dearden, for their invaluable supports, insight thoughts, encouragements and supervision throughout my studies. I would also like to thank the Lairdside Laser Engineering Centre (LLEC) manager, Dr Eamonn Fearon and his research assistant, Mr. Doug Eckhart for the ideas and assistance in setting up of the experiments and in the preparation of samples, without them this work could not have occurred. Highly appreciation goes to Dr Eamonn Fearon for the guidance and for his valuable advices in conducting my experimental work. Despite being a very busy man, he has always found the time to answer all the questions that I asked him every time I went to his office, often without notice. Thanks must also go to Mr. Stephen Boyes (PhD student) and Professor Yi Huang from Electrical and Electronic Engineering Department. Thanks for the teachings, assistance and ideas for all the help and advices in performing the antenna performance testing set-up and analysis throughout these studies. v My fellow researchers in the Laser Group, including Li Wei, Olivier Allegre, Dr Zheng Kuang and Dr Dun Liu for giving me an outlet for my frustration. Special appreciation for my wife, Mrs Nurhafizzah Hassan and my family especially my parents who endured this long process with me, for constant support and unwavering faith throughout my PhD. And finally, I would like to greatly acknowledge the support by the Ministry of Higher Education of Malaysia (MOHE) and the University of Tun Hussein Onn Malaysia (UTHM).