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The use of innovative materials is an upcoming field of 3D printing. 3D printing a wider variety of materials, provides more freedom of design and customized products. The use of chemical plating solutions enhances the rate of deposition of metallic particles onto a substrate. The removal of heavy metals from domestic and industrial waters is an important application, where in variety of sensors are employed. Nano particle based sensors have superficial sensing properties over conventional sensors, as it offers higher sensitivity in a shorter response time. The sensor materials used for detection of heavy metal ions requires to be layered in an accurate fashion and required resolution, where 3D printing could be used. The sensing materials needs thorough analysis and experimentation prior to be used by 3D printers. The compatibility to printing for chemicals involves multiple testing on their properties. The materials used for producing nanoporous gold on a metallic substrate such as copper, is analyzed. The nanoporous gold film is fabricated by immersing copper in potassium gold cyanide solution. The surface conductivity depends on the resistance of copper material after immersion for specified time, which is experimented and characterized. The pH dependence of the PGC mixed solution on resistance parameter is experimented and verified using two copper strips. The porosity is 0.07% and 0.28% for the two strips, where the grain sizes are measured to be 2.5 and 11.5 microns for stripi(32mm) and strip2 (46mm) respectively. The calculated theoretical resistance is tracked along with the measured resistance after PGC immersion experimentation. 3D printing considerations are laid out for 3D printing based on the experimentation results.
http://www.iaeng.org/publication/WCECS2016/WCECS2016_pp355-360.pdf
Journal | Lecture Notes in Engineering and Computer Science |
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Publisher | Newswood Limited |
ISSN | 20780958 |
Open Access | Yes |