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Title: Fabrication of nanopatterns via surface chemical modification and reactive reversal nanoimprint lithography
Keywords: nanoimprint lithography (NIL), atom transfer radical polymerization (ATRP), micro-contact printing (μCP), nano patterns, polymer brushes
Issue Date: 28-Oct-2010
Citation: LI GUANGSHUO (2010-10-28). Fabrication of nanopatterns via surface chemical modification and reactive reversal nanoimprint lithography. ScholarBank@NUS Repository.
Abstract: The research presented in this thesis is focused on fabricating patterned polymeric micro- and nano-architectures via a combination of reactive reversal nanoimprint lithography (NIL) and surface-initiated polymerization. In our approach, chemically functionalized pattern is first created by one-step NIL on substrates such as Si and PEN. The resulting pattern provides reactive initiating sites for atom transfer radical polymerization (ATRP) and polymer brushes were grafted from the surface of the patterned network. We demonstrated the controllability of the growth of polymer brushes in sizes and densities, thus opens up possibility of fine-tuning the resolution of the pattern in nanometer scale with these brushes. These fine-tuned architectures as polymer templates are utilized to guide the assembly of nanoparticles (NPs). Various sizes and shapes of NPs were successfully assembled onto the functionalized templates. Both the hard template-directed assembly and soft polymer brushes guided assembly are investigated.
Appears in Collections:Ph.D Theses (Open)

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