This data collection includes emission data and visual data of that emission from 3D micro fabricated electrospray emitters. 
All measurements were acquired by the "ELECTRA" test facility of the space group of the institute of experimental physics I. - Justus-Liebig-University.
The specifications of the test set-up are available on request or on the website of the institute.

Three emitter designs were used for the experiments. For each design a cross section of a 3D render in included.
The table blow includes all major geometric parameter for each design.

			Capillary geometry		Capillary length		Capillary diameter		Comment
Design 1	straight round			200µm					max. 40µm				Conical opening at the tip
						100µm					20µm

Design 2	straight round			300µm					30µm					---

Design 3	straight rectangular		300µm					15µm x 30µm				five capillries in star pattern

The collected current data/ emission current data for three emitters is available in the .txt files. The name of the .txt file contains the corresponding design number and can be referenced using the table above.
In the .txt the extraction voltage (V), the chamber pressure (mbar), the time (s) and the collected current (V) are available.

The extraction voltage was measured with an Kethley 2700 multimeter from the DC output signal of the HV source and is scaled in 1 V signal = -650V output voltage.
The collected current was measured with an DC trans-impedance-amplifier, which translates the incoming current into a voltage signal ranging from 0V to 10V. The DC 0 to 10 V signal was collected by a Kethley 2700 multimeter. The scaling factor for the current to voltage conversion is available in the .txt.

For design 2 no current data could be obtained due to an overload of the amplifier electronics. 

Each emission event is represented by an accompanying video file. To reduce the size of the video files only the relevant extraction part was cut from the raw video.
For the extraction event of design 1 a slowed down version was also added to the data selection.

To get a better interpretation of the video file as well as the data we strongly recommend to read the manuscript based on these results.