Präziser, schneller, günstiger: Forschende in aller Welt arbeiten seit Jahren daran, elektrische Schaltungen mit additiven Verfahren wie Roboter-3-Druck («Robocasting») herzustellen – mit grossem Erfolg, der mittlerweile allerdings zum Problem wird. Die Metallpartikel, die solche «Tinten» elektrisch leitfähig machen, verschärfen das Problem des Elektroschrotts. Zumal die Masse
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