Abstract
Chalcogenide phase-change materials (CPCMs) possess a radically changeable optical property as switching the state between amorphous and crystalline. This makes CPCMs attractive for reconfigurable photonic devices. In article number 1900094 by Tun Cao and Mengjia Cen, the fundamentals in chalcogenide-tuned photonics is introduced. Recent developments are reviewed in the field, before concentrating on metal-chalcogenide-metal meta-devices. The requirements and future outlooks in this rising field are discussed.
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