Stimulation Emission Depleted Photoacoustic

Photoacoustic emission from fluorescent nanodiamonds enhanced with gold nanoparticles

Fluorescent nanodiamonds (FNDs) have drawn much attention in recent years for biomedical imaging applications due to their desired physical properties including excellent photostability, high biocompatibility, extended far-red fluorescence emission, and ease of surface functionalization. Here we explore a new feature of FNDs, i.e. their photoacoustic emission capability, which may lead to poten...

Photoacoustic detection of stimulated emission pumping in p · difluorobenzenea

Photoacoustic detection has b~en used to monitor a stimulated emission pumping process in p-difluorobenzene. Using the A B 2u 5 1 state as an intermediate, several vibrational levels of the ground electronic state were populated. The photoacoustic method is an attractive alternative to other detection techniques because of its sensitivity, simplicity, and its ability to differentiate between st...

Photoacoustic detection of C2H4 emission from germinating striga seeds

Photoacoustic emission from Au nanoparticles arrayed on thermal insulation layer.

Efficient photoacoustic emission from Au nanoparticles on a porous SiO(2) layer was investigated experimentally and theoretically. The Au nanoparticle arrays/porous SiO(2)/SiO(2)/Ag mirror sandwiches, namely, local plasmon resonators, were prepared by dynamic oblique deposition (DOD). Photoacoustic measurements were performed on the local plasmon resonators, whose optical absorption was varied ...

Photoacoustic microscopy of microvascular responses to cortical electrical stimulation.

Advances in the functional imaging of cortical hemodynamics have greatly facilitated the understanding of neurovascular coupling. In this study, label-free optical-resolution photoacoustic microscopy (OR-PAM) was used to monitor microvascular responses to direct electrical stimulations of the mouse somatosensory cortex through a cranial opening. The responses appeared in two forms: vasoconstric...