Anal. Chem. 2007, 79, 3568-3574
Glass Nanopore-Based Ion-Selective Electrodes Jun Ho Shim,† Juneho Kim,† Geun Sig Cha,† Hakhyun Nam,*,† Ryan J. White,‡ Henry S. White,‡ and Richard B. Brown*,§
Chemical Sensor Research Group, Department of Chemistry, Kwangwoon University, Seoul 139-701, Republic of Korea, and Departments of Chemistry and Departments of Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah 84112
Glass nanopore-based all-solid-state ion-selective electrodes (ISEs) have been developed to probe the distribution of ionic species at micro- or submicrometer-length scales, e.g., mapping of ion flux through micrometer-sized pores. The all-solid-state ISE was fabricated by sealing a conically etched platinum wire (d ) 25-µm; radius of etched tip
