John Nesbit

In a technique known as “time-resolved incoherent anti-Stokes Raman Spectroscopy”, the graph in this lenticular image shows a signal for a type of vibration caused in carbon nanotube by a pulse of laser light. The intensity of this signal is a measure of the number of vibrations in the nanotube, which can be seen to decrease with increasing pulse delay.

This drop in intensity can be used to determine the lifetime of the vibrations. This work may lead to a better understanding of heat-flow in nanotube based devices, helping to improve their performance and reliability.