软微影技术(soft lithography),又称软微影制程、可挠性奈米转印[1]、软蚀刻技术或软光刻技术,是一种用软性高分子材质做成的可挠性刻印的模具,在模具上面涂布具有自我组合性能的单元分子(SAM, Self-Assembly Monomer)后,像印章一样,在镀金的薄膜基板上微压,把奈米图形模子上面凸出部分的自我组合性能的单元分子(SAM)像油墨一样的印在金薄膜上[1]

Thumb
Figure 1 - "Inking" a stamp. PDMS stamp with pattern is placed in Ethanol and ODT solution
Thumb
Figure 2 - ODT from the solution settles down onto the PDMS stamp. Stamp now has ODT attached to it which acts as the ink.
Thumb
Figure 3 - The PDMS stamp with the ODT is placed on the gold substrate. When the stamp is removed, the ODT in contact with the gold stays stuck to the gold. Thus the pattern from the stamp is transferred to the gold via the ODT "ink."

优点

软微影技术具有一些独特的优势比其他形式的微影(光刻)技术(如光刻和电子束光刻)。 它们包括以下内容:
1.更低的成本比传统微影技术大量生产。
2.非常适合应用在生物技术
3.非常适合应用在塑胶电子。
4.非常适合于超大型平面,或及非平面(nonflat)微影。
5.不需要制作光罩,即可制造一个小的细节设计比一般微影实验室设备的(30〜100纳米)差不多[2]

缺点

现在的积体电路包含了好几层不同的材料,PDMS压模的扭曲变形会导致复制图案的小误差,也使上下层做好的图形排列得不整齐。即使是最微小的排列误差或扭曲,都会损坏多层奈米电子装置。因此,软蚀刻法不适合制造需要精准堆叠的多层结构。此缺点可藉热压成形式奈米压印或步进光感式奈米压印来改善之[1]

参见

参考资料

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.