Assertion: germanium | /r/HasProperty | key material
Facets:
value: in society
type: LOCATION
value: in modern material science
type: LOCATION
Source sentences:
text: Germanium is a key material in modern material science and society: it is used as a dopant in fiber optic glasses and in semiconductor devices, both in activating conduction in layers and also as a substrate for III–V epitaxy.