Printed thick film materials

The solvent is the vehicle to produce a homogenous mixture for the silk-screen printing. It is essential that the prepared ink or paste is homogenous in nature to obtain a uniform thick film. The printed thick films are not limited to metallic film insulation materials, carbon, and other nonmetallic films can also be silk-screened using appropriate inks and pastes. 

MenU, F., Debeda, H., and Lukat, C., Screen-printed thick films From materials to functional devices, J. Eur. Ceram. Soc. 25 (2005) 2105-2113. 

Thick-film materials are deposited onto flat substrates by screen printing. The origins of screen printing date back more than 3000 years when the Chinese used silk screen printing to deposit multilayered colored patterns onto fabrics. A similar process is still used today to print designs and logos onto T-shirts. 

The versatility and cost-effectiveness of thick-film techniques is demonstrated in consumer applications, as well. Printed thick film (PTF) materials are used in circuitry in games, membrane touch switches, electroluminescent lighting and signage. Thick-film circuitry is used in personal digital products and specialty applications such as those shown in Figure 1.26 and Figure 1.27. 

Miscellaneous. Ruthenium dioxide-based thick-film resistors have been used as secondary thermometers below I K (92). Ruthenium dioxide-coated anodes ate the most widely used anode for chlorine production (93). Ruthenium(IV) oxide and other compounds ate used in the electronics industry as resistor material in apphcations where thick-film technology is used to print electrical circuits (94) (see Electronic materials). Ruthenium electroplate has similar properties to those of rhodium, but is much less expensive. Electrolytes used for mthenium electroplating (95) include [Ru2Clg(OH2)2N] Na2[Ru(N02)4(N0)0H] [13859-66-0] and (NH 2P uds(NO)] [13820-58-1], Several photocatalytic cycles that generate... 

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