Abstract
SONOCHEMICAL SURFACE MODIFICATION FOR ADVANCED ELECTRONIC MATERIALS
Andy Cobley, Bilal Mkhlef and Tim Mason
The Sonochemistry Centre, Coventry University
CV1 5FB, Priory Street
Coventry (United Kingdom)
The rapidly evolving environment of electronic manufacturing is constantly developing novel materials for electronic devices. This is particularly apparent in the field of printed/plastic electronics, Radio frequency identification (RFID) technology etc where almost any substrate that can be printed could become an electronic device. Optical electronics will require that circuits be deposited onto glass substrates whilst novel ceramics are required for the antennas of Wi-Fi equipment. Even in the traditional printed circuit board (PCB) and moulded interconnect device (MID) industries new polymers and laminates are being produced to cope with the demands of higher frequencies and increased solder temperatures required for ‘lead free’ electronics. Achieving good adhesion between these substrates and the conductive tracks or pixels etc (whether a metal, semiconductor, conductive ink, polymer or paste) is perhaps the most critical stage of the manufacturing process since if the adhesion is poor the device will simply fail.
Traditional wet chemical methods for surface modification employ hazardous chemistry, operate at high temperatures and require copious rinsing. With health and safety and environmental laws getting ever more strict there is a need for ‘cleaner and greener’ techniques. In addition these advanced electronic materials require novel and flexible approaches to surface modification.
This paper will show that by the application of ultrasonic waves of an appropriate frequency and power a highly aggressive combination of mechanical and chemical surface modification processes can be instigated from benign aqueous solutions and a range of materials, utilized in electronic manufacturing can be surface modified. Sonochemistry is therefore a promising alternative to traditional techniques that could reduce energy costs, production times and water usage. In addition the use of non-hazardous chemistry means that it is ‘clean and green’ and less likely to fall foul of environmental and health and safety legislation.
Andy Cobley, Bilal Mkhlef and Tim Mason
The Sonochemistry Centre, Coventry University
CV1 5FB, Priory Street
Coventry (United Kingdom)
The rapidly evolving environment of electronic manufacturing is constantly developing novel materials for electronic devices. This is particularly apparent in the field of printed/plastic electronics, Radio frequency identification (RFID) technology etc where almost any substrate that can be printed could become an electronic device. Optical electronics will require that circuits be deposited onto glass substrates whilst novel ceramics are required for the antennas of Wi-Fi equipment. Even in the traditional printed circuit board (PCB) and moulded interconnect device (MID) industries new polymers and laminates are being produced to cope with the demands of higher frequencies and increased solder temperatures required for ‘lead free’ electronics. Achieving good adhesion between these substrates and the conductive tracks or pixels etc (whether a metal, semiconductor, conductive ink, polymer or paste) is perhaps the most critical stage of the manufacturing process since if the adhesion is poor the device will simply fail.
Traditional wet chemical methods for surface modification employ hazardous chemistry, operate at high temperatures and require copious rinsing. With health and safety and environmental laws getting ever more strict there is a need for ‘cleaner and greener’ techniques. In addition these advanced electronic materials require novel and flexible approaches to surface modification.
This paper will show that by the application of ultrasonic waves of an appropriate frequency and power a highly aggressive combination of mechanical and chemical surface modification processes can be instigated from benign aqueous solutions and a range of materials, utilized in electronic manufacturing can be surface modified. Sonochemistry is therefore a promising alternative to traditional techniques that could reduce energy costs, production times and water usage. In addition the use of non-hazardous chemistry means that it is ‘clean and green’ and less likely to fall foul of environmental and health and safety legislation.
| Original language | English |
|---|---|
| Publication status | Published - 7 Jun 2008 |
| Event | 11th Meeting of European Society of Sonochemistry - Montpellier, France, Grand La Motte, France Duration: 1 Jun 2008 → 5 Jun 2008 |
Conference
| Conference | 11th Meeting of European Society of Sonochemistry |
|---|---|
| Country/Territory | France |
| City | Grand La Motte |
| Period | 1/06/08 → 5/06/08 |