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dc.contributor.authorChen, Jem-Kunen_US
dc.contributor.authorPai, Ping-Chunen_US
dc.contributor.authorChang, Jia-Yawen_US
dc.contributor.authorFan, Shih-Kangen_US
dc.date.accessioned2014-12-08T15:22:44Z-
dc.date.available2014-12-08T15:22:44Z-
dc.date.issued2012-04-01en_US
dc.identifier.issn1944-8244en_US
dc.identifier.urihttp://hdl.handle.net/11536/16057-
dc.description.abstractIn this work, we focus on the fabrication of the nanoassemblies consisting of the poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) brushes and gold nanoparticles (AuNPs). The employed process involves grafting of the PDMAEMA chains on an underlying substrate in a brush conformation followed by the immobilization of surface functionalized AuNPs by means of physical interaction (electrostatic attraction, entanglement, and hydrogen bonding). Atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy have been employed to characterize the prepared PDMAEMA-AuNP nanoassemblies. Polymer brushes possessing various thicknesses have been found to suppress the nanoparticles' aggregation and, hence, facilitate the surface coverage. Furthermore, we patterned the PDMAEMA-AuNP nanoassemblies as an one-dimensional periodic relief grating (OPRG). The subwavelength structure of OPRG has the optical features including artificial refractive index, form birefringence and resonance and band gap effects. A mean refractive index of the PDMAEMA-AuNP nanoassemblies can be controlled by the filling factors of the OPRG structure, so that a desired distribution of refractive index of the polymer brushes-gold OPRG under various stimuli can be realized. The employed approach is simple and highly versatile for the modification of surfaces with a wide range of NPs.en_US
dc.language.isoen_USen_US
dc.subjectPDMAEMA brushen_US
dc.subjectnanolithographyen_US
dc.subjectgold nanoparticlesen_US
dc.subjectbinary gratingen_US
dc.titlepH-Responsive One-Dimensional Periodic Relief Grating of Polymer Brush-Gold Nanoassemblies on Silicon Surfaceen_US
dc.typeArticleen_US
dc.identifier.journalACS APPLIED MATERIALS & INTERFACESen_US
dc.citation.volume4en_US
dc.citation.issue4en_US
dc.citation.epage1935en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.identifier.wosnumberWOS:000303139900012-
dc.citation.woscount15-
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