Motion-driven sensing and biosensing using electrochemically propelled nanomotors

Electrochemically-propelled nanomotors offer considerable promise for developing new and novel bioanalytical and biosensing strategies based on the direct isolation of target biomolecules or changes in their movement in the presence of target analytes. For example, receptor-functionalized nanomotors...

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Bibliographic Details
Published in:Analyst (London) 2011-11, Vol.136 (22), p.4621-4630
Main Authors: CAMPUZANO, S, KAGAN, D, OROZCO, J, WANG, J
Format: Article
Language:English
Subjects:
Analytical chemistry
Animals
Applied sciences
Biological and medical sciences
Biosensing Techniques - instrumentation
Biosensors
Biotechnology
Cell physiology
Chemistry
Electrochemistry - instrumentation
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General, instrumentation
Global environmental pollution
Humans
Methods. Procedures. Technologies
Molecular and cellular biology
Motion
Nanotechnology - instrumentation
Pollution
Signal transduction
Various methods and equipments
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Summary:Electrochemically-propelled nanomotors offer considerable promise for developing new and novel bioanalytical and biosensing strategies based on the direct isolation of target biomolecules or changes in their movement in the presence of target analytes. For example, receptor-functionalized nanomotors offer direct and rapid target isolation from raw biological samples without preparatory and washing steps. Microtube engines functionalized with ss-DNA, aptamer or antibody receptors are particularly useful for the direct isolation of nucleic acids, proteins or cancer cells, respectively. A new nanomotor-based signal transduction involving measurement of speed and distance travelled by nanomotors, offers highly sensitive, rapid, simple and low cost detection of target biomarkers, and a new dimension of analytical information based on motion. The resulting distance signals can be easily visualized by optical microscope (without any sophisticated analytical instrument) to reveal the target presence and concentration. The attractive features of the new micromachine-based target isolation and signal transduction protocols reviewed in this article offer numerous potential applications in biomedical diagnostics, environmental monitoring, and forensic analysis.
ISSN:0003-2654
1364-5528
DOI:10.1039/c1an15599g