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http://hdl.handle.net/10773/20160
Title: | Electrophoretic Deposition on Nonconducting Substrates: A Demonstration of the Application to Microwave Devices |
Author: | Vilarinho, Paula M. Fu, Zhi Wu, Aiying Axelsson, Anna Kingon, Angus I. |
Keywords: | THICK-FILMS FABRICATION SYSTEM |
Issue Date: | 2015 |
Publisher: | AMER CHEMICAL SOC |
Abstract: | Through the use of a sacrificial carbon layer, this work reports a method of performing electrophoretic deposition (EPD) of thick films on fully nonconducting substrates, overcoming the restricting requirement for EPD of a conducting or partially conducting substrate. As a proof of concept, the method was applied to the development of microwave-thick films on insulating alumina substrates. The key parameter to be controlled is the thickness of the sacrificial carbon layer; this is expected to be a general result for the application of the processing method. The method allows direct patterning of the structure and leads to the potential use of EPD in a far wider range of electronic applications (multilayer ceramic capacitors (MLCCs), low-temperature cofired ceramics (LTTCs), and biotech devices). Furthermore, in conjunction with work reported elsewhere, the development of specific BaNd2Ti5O14 (BNT) thick-film microwave dielectrics opens up a technology platform for a range of high-quality factor (Q) devices. More specifically, 100-mu m-thick BNT layers were achieved with a dielectric constant of 149 and Q of 1161 (10 GHz). These materials can now be integrated with tunable dielectrics or dielectrics on metal substrates to provide a platform for devices in the front end of communication systems and cellular base stations. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20160 |
DOI: | 10.1021/la504184k |
ISSN: | 0743-7463 |
Publisher Version: | 10.1021/la504184k |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Electrophoretic Deposition on Nonconducting Substrates A Demonstration of the Application to Microwave Devices_10.1021la504184k.pdf | 1.7 MB | Adobe PDF |
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