A three-dimensional hollow graphene fiber microelectrode with shrink-effect-enabled enzyme immobilization for sensor applications

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（11）
• 页码范围: 718-722
• 页数: 5页
• 语种: 英文

摘要

Microelectrodes are a type of electrode with microscopic dimension,and due to their rapid diffusing rates,high electrical current densities and signal-to-noise ratios,they can help improve the detection sensitivity for various analytes [1].Investigations on the fabrication and the application of microelectrodes are highly relevant.Fiber-type microelectrodes with one-dimensional (1D)microstructures that possess 1D diffusion,particularly carbon fiber microelectrodes,have been widely fabricated and used in many different types of sensors due to their low cost,small volume,portability,and good biocompatibility [1,2].However,poor electrocatalytic activity and low response currents preclude the applications of carbon fiber microelectrodes in sensors.