在新加坡科技研究局的官網就有提到了

http://www.a-star.edu.sg/?TabId=828...&articleId=1539

第五項~

5. The secret of the research lies in the use of an extremely high-resolution e-beam lithography process that produces super fine nano-sized structures. Dr Yang discovered that by adding sodium chloride to a developer solution used in existing lithography processes, he was able to produce highly defined nanostructures down to 4.5 nm half pitch, without the need for expensive equipment upgrades. This ‘salty developer solution’ method was invented by Dr Yang when he was a graduate student at the Massachusetts Institute of Technology.

好像是將鹽加入雕刻的雕刻的顯影液中,再透過辨識率超高的電子光速雕刻,就可以產生較密合的奈米軌道,間距為4.5奈米,比起之前的軌道就密合多了,如此在磁軌比較密合的狀況下,自然就能存放更多資料了..

假設原本的磁軌為 |1...2...3...4| ... <--為資料間的間距,數字為儲存資料
加入鹽的雕刻後變為 |1.2.3.4.5.6.| 間距變小,資料就可以塞入更多了

以上為不負責任亂講,如有錯誤,請站上大大鞭小力點~~