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Capacitive microsystems for biological sensing
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DOI：10.1016/j.bios.2011.05.047.png)
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摘要
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The growing interest in personalized medicine leads to the need for fast, cheap and portable devices that reveal the genetic profile easily and accurately. To this direction, several ideas to avoid the classical methods of diagnosis and treatment through miniaturized and label-free systems have emerged. Capacitive biosensors address these requirements and thus have the perspective to be used in advanced diagnostic devices that promise early detection of potential fatal conditions. The operation principles, as well as the design and fabrication of several capacitive microsystems for the detection of biomolecular interactions are presented in this review. These systems are micro-membranes based on surface stress changes, interdigitated micro-electrodes and electrode-solution interfaces. Their applications extend to DNA hybridization, protein-ligand binding, antigen-antibody binding, etc. Finally, the limitations and prospects of capacitive microsystems in biological applications are discussed. (C) 2011 Elsevier B.V. All rights reserved.
Keyword:
Capacitive detection
Biosensors
Biomolecular interactions
Micro-membranes
Micro-electrodes
期刊
IF:
10.5
论文数:
1.8W
被引数:
7.7W
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