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Electrospray may be used in nanotechnology, [18] for example to deposit single particles on surfaces. This is done by spraying colloids on average containing only one particle per droplet. The solvent evaporates, leaving an aerosol stream of single particles of the desired type.
[48] [49] [50] Electrospray is used for ion formation in a number of ambient ion sources. Desorption electrospray ionization (DESI) is an ambient ionization technique in which a solvent electrospray is directed at a sample. [51] [52] The electrospray is attracted to the surface by applying a voltage to the sample. Sample compounds are extracted ...
Ambient ionization techniques are attractive for many samples for their high tolerance to complex mixtures and for fast testing. EESI has been employed for the rapid characterization of living objects, [10] native proteins, [11] and metabolic biomarkers.
Bio-electrospraying is a technology that enables the deposition of living cells on various targets with a resolution that depends on cell size and not on the jetting phenomenon.
The term laser electrospray mass spectrometry has been used to denote the use of a femtosecond laser for ablation. [29] [30] Laser ablation into an electrospray produces highly charged ions that are similar to those observed in direct electrospray. An alternative ionization approach following laser desorption is a plasma.
Electrospray-assisted laser desorption/ionization (ELDI) uses a 337 nm UV laser [79] or 3 μm infrared laser [80] to desorb material into an electrospray source. Matrix-assisted laser desorption electrospray ionization (MALDESI) [81] is an atmospheric pressure ionization source for generation of multiply charged ions. An ultraviolet or infrared ...
Desorption electrospray ionization (DESI) is an ambient ionization technique that can be coupled to mass spectrometry (MS) for chemical analysis of samples at atmospheric conditions. Coupled ionization sources-MS systems are popular in chemical analysis because the individual capabilities of various sources combined with different MS systems ...
Nanospray desorption electrospray ionization (nano-DESI) is an ambient pressure ionization technique used in mass spectrometry (MS) for chemical analysis of organic molecules. [1] In this technique, analytes are desorbed into a liquid bridge formed between two capillaries and the sampling surface. [ 2 ]