The researchers worked with sodium beta-alumina in its liquid form, which enabled them to spread it easily onto a surface in precisely the pattern required for a printed circuit.
No one has played better on the International circuit this year than Vinci, who has won three titles at this level (and at the two extremes of surface - two on clay, one on grass).
Through hole components welding using traditional manual welding or soldering. The circuit board surface mount components and through-hole components mixed together.