Nano-material electrode modification based electrochemical integrated digital micro-fluidic chip

Abstract

The invention belongs to the technical field of micro-fluidic analysis chips, and concretely relates to a nano-material electrode modification based electrochemical integrated digital micro-fluidic chip. The electrochemical integrated digital micro-fluidic chip treats a digital micro-fluidic chip as a base and integrates an electrochemical-sensing micro-electrode, an electrochemical electrode is embedded in the control electrode of the digital micro-fluidic chip, and all the electrodes are positioned in a same plane of the chip. The nano-material modification of the electrochemical sensing electrode is realized through the micro-fluidic automatic control in order to enhance the electrochemical sensing capability of the micro-fluidic chip. The nano-material electrode modification based electrochemical integrated digital micro-fluidic chip has the advantages of novel design, high integration level, convenient making, high automation degree, strong detection capability, realization of the micro-scale, rapid and sensitive detection, and substantial widening of the application ranges of the electrochemical sensing and digital micro-fluidic fields.

Description

technical field [0001] The invention belongs to the technical field of microanalysis chips, and in particular relates to an electrochemically integrated digital microfluidic chip based on nanometer material electrode modification. Background technique [0002] Lab-on-a-Chip (LOC), also known as Micro Total Analysis System (Miniaturized Total Analysis System, μ-TAS), its simple definition refers to the ability to complete various biochemical processes, miniaturize and integrate complex functions that can automatically complete traditional laboratory tasks The goal of a modernized MEMS system is to integrate a complete analysis process on a single device, which can complete operations such as sample extraction, sample pretreatment, decomposition and separation, biochemical reactions, analysis and detection, and data processing. As an emerging technology, lab-on-a-chip has attracted more attention since it was proposed. It has many advantages such as high integration, high prec...

AI Technical Summary

Problems solved by technology

Although these two chips have realized the integration of electrochemical detection on the microfluidic chip, they still have the disadvantages of relatively complex chip structure and not easy to manufacture. More importantly, due to the size limitation of the driving electrodes of the digital microfluidic chip , the integrated electrochemical electrode size is usually small, which reduces the sensitivity of the electrochemical detection method, thereby weakening the advantages of electrochemical integration

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