These are tiny pieces of a superconducting material consisting of a niobium film on an aluminium oxide wafer with gaps etched into it.
这是一些细小的超导材料，由一个刻有间隔的氧化铝晶片上的铌薄膜构成。
2
Material oxidation, such as oxidation spot, serious after heat treatment ofoxidefilm.
素材氧化严重，如氧化斑，热处理后氧化膜。
3
X-ray photoelectron spectroscopy proves a very effective mean in identifying the film composition and the chemical states of the elements in the complicated oxidefilm.