TY - JOUR
T1 - Nanopatterned surface with adjustable area coverage and feature size fabricated by photocatalysis
AU - Bai, Yang
AU - Zhang, Yan
AU - Li, Wei
AU - Zhou, Xuefeng
AU - Wang, Changsong
AU - Feng, Xin
AU - Zhang, Luzheng
AU - Lu, Xiaohua
PY - 2009/8/30
Y1 - 2009/8/30
N2 - We report an effective approach to fabricate nanopatterns of alkylsilane self-assembly monolayers (SAMs) with desirable coverage and feature size by gradient photocatalysis in TiO 2 aqueous suspension. Growth and photocatalytic degradation of octadecyltrichlorosilane (OTS) were combined to fabricate adjustable monolayered nanopatterns on mica sheet in this work. Systematic atomic force microscopy (AFM) analysis showed that OTS-SAMs that have similar area coverage with different feature sizes and similar feature size with different area coverages can be fabricated by this approach. Contact angle measurement was applied to confirm the gradually varied nanopatterns contributed to the gradient of UV light illumination. Since this approach is feasible for various organic SAMs and substrates, a versatile method was presented to prepare tunable nanopatterns with desirable area coverage and feature size in many applications, such as molecular and biomolecular recognition, sensor and electrode modification.
AB - We report an effective approach to fabricate nanopatterns of alkylsilane self-assembly monolayers (SAMs) with desirable coverage and feature size by gradient photocatalysis in TiO 2 aqueous suspension. Growth and photocatalytic degradation of octadecyltrichlorosilane (OTS) were combined to fabricate adjustable monolayered nanopatterns on mica sheet in this work. Systematic atomic force microscopy (AFM) analysis showed that OTS-SAMs that have similar area coverage with different feature sizes and similar feature size with different area coverages can be fabricated by this approach. Contact angle measurement was applied to confirm the gradually varied nanopatterns contributed to the gradient of UV light illumination. Since this approach is feasible for various organic SAMs and substrates, a versatile method was presented to prepare tunable nanopatterns with desirable area coverage and feature size in many applications, such as molecular and biomolecular recognition, sensor and electrode modification.
KW - Area coverage
KW - Atomic force microscopy (AFM)
KW - Feature size
KW - Photocatalysis
KW - Self-assembled monolayers (SAMs)
UR - http://www.scopus.com/inward/record.url?scp=68549141357&partnerID=8YFLogxK
UR - https://www.sciencedirect.com/science/article/pii/S0169433209009581?via%3Dihub
U2 - 10.1016/j.apsusc.2009.06.115
DO - 10.1016/j.apsusc.2009.06.115
M3 - Article
AN - SCOPUS:68549141357
SN - 0169-4332
VL - 255
SP - 9296
EP - 9300
JO - Applied Surface Science
JF - Applied Surface Science
IS - 22
ER -