کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
591407 | 1453668 | 2014 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Rapid, Brushless Self-assembly of a PS-b-PDMS Block Copolymer for Nanolithography Rapid, Brushless Self-assembly of a PS-b-PDMS Block Copolymer for Nanolithography](/preview/png/591407.png)
Block copolymers (BCP) are highly promising self-assembling precursors for scalable nanolithography. Very regular BCP nanopatterns can be used as on-chip etch masks. The first step in the processing of BCP thin films is usually the chemical modification of the substrate surface, typically by grafting of a brush layer that renders the surface energy neutral relative to the constituent blocks. We provide here a first study on rapid, low temperature self-assembly of PS-b-PDMS (polystyrene-block-polydimethylsiloxane) on silicon substrates without a brush layer. We show that it forms line and antidot patterns after short solvo-thermal annealing. Unlike previous reports on this system, low temperature and short annealing time provide self-assembly in homogeneous thin films covering large substrate areas. This on-chip mask was then used for pattern transfer to the underlying silicon substrate. SEM (scanning electron microscope) images reveal silicon nanowires relative to the PDMS patterns of the BCP mask.
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Journal: Colloids and Interface Science Communications - Volume 2, October 2014, Pages 1–5