Mid-infrared metabolic imaging with vibrational probes

Fiber-optic Probes for Mid-infrared Spectrometry

Imaging bacterial peptidoglycan with near-infrared fluorogenic azide probes.

Fluorescent probes designed for activation by bioorthogonal chemistry have enabled the visualization of biomolecules in living systems. Such activatable probes with near-infrared (NIR) emission would be ideal for in vivo imaging but have proven difficult to engineer. We present the development of NIR fluorogenic azide probes based on the Si-rhodamine scaffold that undergo a fluorescence enhance...

Mid-Infrared Imaging Spectroscopy in Ophiuchus

The dust emission spectrum between 5 and 16 m has been measured at the northern edge of the dense cloud in Ophiuchus at a position where the radiation field intensity is estimated to be 10-20 times the mean Solar neighborhoodvalue. The spectrum shows the well known emission bands at 6.2, 7.7, 8.6, 11.3 and 12.7 m. ISO allows to detect the emission features for a radiation field intensity two or...

Spitzer Mid - Infrared Imaging of Nearby Ultraluminous Infrared

We have observed 14 nearby (z < 0.16) Ultraluminous Infrared Galaxies (ULIRGs) with Spitzer at 3.6—24µm. The underlying host galaxies are well-detected, in addition to the luminous nuclear cores. While the spatial resolution of Spitzer is poor, the great sensitivity of the data reveals the underlying galaxy merger remnant, and provides the first look at off-nuclear mid-infrared activity. ULIRGs...

Spitzer Mid-Infrared Imaging of Nearby Ultraluminous Infrared Galaxies

We have observed 14 nearby (z < 0.16) Ultraluminous Infrared Galaxies (ULIRGs) with Spitzer at 3.6—24μm. The underlying host galaxies are well-detected, in addition to the luminous nuclear cores. While the spatial resolution of Spitzer is poor, the great sensitivity of the data reveals the underlying galaxy merger remnant, and provides the first look at off-nuclear mid-infrared activity.