Carbon nanotube sensors

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Profiles of carbon nanotube sensors product developers

Nanosensor technology could significantly out-perform current commercial detection devices by up to a 1,000 fold. CNTs are excellent functional materials for the development of advanced sensors. We profile the leading application developers.

Carbon nanotube sensors

The development of new and enhanced nanosensors is allowing for the detection of biological and chemical contaminants at very low concentration levels in the environment, including water. Nanosensors will allow for rapid and precise process control and environmental monitoring, leading to remote, in-situ, real-time and continuous measurement of species at trace (ppt) concentrations. Nanostructure based chemical sensors possess high sensitivity, small size and low power consumption, which can be used to quickly verify incoming raw materials at the delivery point; to monitor the changing composition of the vapour phase surrounding or contained within the process.

Due to their small size, high mechanical strength, high electrical and thermal conductivity, large specific surface area, and excellent chemical and thermal stability, CNTs are excellent functional materials for the development of advanced sensors.

Properties

Carbon nanotube-based chemical sensors have the following properties:

• High sensitivity (potentially single molecule sensitivity) due to large surface to volume  ratio

• Fast response due to the one-dimensional quantum wire nature that makes its electronic  properties very sensitive to gas adsorption

• Lower power consumption (at least 100 times less than the current system), which is ideal for persistent surveillance applications

• Small size and lightweight.

 

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