Assertion: adenine | /r/HasProperty | obtained in ultra-high vacuum
Facets:
value: at room temperature
type: LOCATION
Source sentences:
text: a, STM image of Cu{110} surface with sub-monolayer coverage of adenine obtained in ultra-high vacuum at room temperature using a tungsten tip in constant current (1.24 nA) mode and sample bias of −1.07 V. b, Model of {110} surface defining the (±1,2) directions.