A new technique for trapping hard-to-detect molecules has been devised, using forests of carbon nanotubes. The team modified a simple microfluidic channel with an array of vertically aligned carbon nanotubes -- rolled lattices of carbon atoms that resemble tiny tubes of chicken wire. The researchers had previously devised a method for standing carbon nanotubes on their ends, like trees in a forest. With this method, they created a three-dimensional array of permeable carbon nanotubes within a microfluidic device, through which fluid can flow.
from Geochemistry News -- ScienceDaily http://ift.tt/1QGb8yf