It will be important to further assess the role of oxygen in other nanotube redox processes. Initial fluorescence bleaching occurs ... spectrograph (Kaiser Optical) with 1-s integration times ...

This bleaching is reversible and shown to be caused by electron transfer from the top of the valence band of the SWNT to the lowest unoccupied molecular orbital of NO. The resulting optical sensor ...

This process, known as optical bleaching, induces a nonlinear effect that temporarily alters the properties of a material. Remarkably, when the laser is switched on and off at ultrahigh speeds ...