http://www.pnas.org/content/pnas/112/44/13473.full.pdf
這是PNAS的文章。是不是這文章的reviewers都是外行,". Purity as high as 99.999% (wt %) is achieved"這種外行話居然允許出現在專業文章中?
http://www.addisonengineering.com/about-silicon.html
這是公司的網站,人家說“Bulk silicon wafers used in integrated circuits must first be refined to an even higher "nine nines" purity (99.9999999%), a process which requires repeated applications of refining technology.”這公司真是太外行了。。。
就連我這個半外行(咱從來不做Silicon,也不具體做材料),聽作材料的同事,說買材料時純度,也聽到過這種純度99.99%之類的說法,人家也真是外行。
就您內行。。。