Fig. 1: Experimental setup.
From: Studying biomolecular folding and binding using temperature-jump mass spectrometry

a Schematic representation of the temperature-jump electrospray source. b, c Infrared pictures of the source with blocks 1 and 2 maintained at 60 and 25 °C and the reverse. The bottom pictures show the source in similar positions. To obtain the IR pictures, black tape was placed on the source in order to enhance blackbody emission and to reduce the reflection of light coming from other sources.