Fabrication and characterization of single pores for modeling mass transport across porous membranes

被引:29
作者
Sun, L [1 ]
Crooks, RM [1 ]
机构
[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA
关键词
D O I
10.1021/la980871a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An Au membrane containing a single pore was fabricated using a template approach. The pore diameter is defined by the diameter of a glass fiber template and the pore length by the amount of Au electroplated over a seed pore. The utility of the single pore for modeling mass transport is demonstrated by configuring the pore as a Coulter counter to monitor the transport of 440 nm diameter polystyrene spheres. An important advantage of this Au membrane model is that the pore surface chemistry can be modified with a self-assembled monolayer. However, the metallic Au surface also requires minimizing the exposed membrane area in order to reduce the interfering charging/faradaic current and to shorten the instrumental response time.
引用
收藏
页码:738 / 741
页数:4
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[31]   Carbon nanotube tips: High-resolution probes for imaging biological systems [J].
Wong, SS ;
Harper, JD ;
Lansbury, PT ;
Lieber, CM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (03) :603-604