Micromachined 2D nanoelectrospray emitter [mass spectrometer applications]
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A novel 2D nanoelectrospray emitter for mass spectrometry has been micromachined using photoresist SU-8 on silicon substrates using one-step photomasking. The design contains a reservoir, a capillary slot and an emitter tip. The emitters were successfully tested on an ion trap mass spectrometer. A nanoelectrospray was observed at voltages as low as 0.8 kV.
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