Harvey Tsang - Photonic sintering of micron particle conductive paste

Session 20: Conductors

Photonic sintering of micron particle conductive paste
Thursday, February 15, 2018
2:25 PM - 2:45 PM

Many studies have been conducted on nano-silver ink, these materials are suitable for inkjet and aerosol jet. Nano-sized particles are suitable for photonic sintering for 3D printed electronics because they absorb the IR and NIR spectrum much more readily than common substrate materials. Other direct write methods, such as nozzle extrusion/dispensing, are also able to use materials with larger particle sizes. The interaction between these micron particle pastes and photonic sintering are unknown. If these pastes can reach 220ºC, before the substrate exceeds 90 ºC, or a significant amount of substrate material is ablated, then photonic sintering can be a viable within the direct digital manufacturing process. Conductivity measurements will be conducted on dispensed silver paste on ABS substrates, before and after photonic sintering with parameter optimization of distance between lamp and sample, number of pulses and the temperature of substrate and conductive trace.

Speaker's Biography

Harvey Tsang earned his Bachelor of Science in Electrical Engineering degree from the University of Texas at Arlington in 2009. In 2011, he received his Master of Science in Electrical engineering degree from the University of Texas at El Paso. In 2016, he completed his dissertation titled, "Digital Processes and Characterization for Fabricating 3D RF Devices." This was supervised by Dr Raymond Rumpf and Dr Kenneth Church. While pursuing his Masters degree, Dr Tsang worked as a research assistant at nScrypt and continued with his research at Sciperio during his PhD. He worked on numerous R&D projects funded by federal, state and various private institutions and has co-published in a few IEEE papers involving 3D printed antennae, all dielectric RF devices and electromagnetic devices with metamaterials. Dr Tsang is currently continuing his research at the Army Research Labs for flexible hybrid electronics.


Harvey Tsang
Electronics Engineer
Army Research Labs