Abstract: With a method for measurement of thrombocyte function, a solution is created, by which the sensitivity of individual thrombocytes can be measured with the least possible apparatus effort, with high throughput, by passing a liquid thrombocyte solution, in which the thrombocytes are present in isolated form, into a microfluidic chamber and brought into contact with at least one stimulant, wherein an electrical field directed transverse to the entry direction of the thrombocyte solution is applied to the chamber, and the movement path of the thrombocytes in the electrical field is observed and evaluated, in such a manner that thrombocytes having a movement path directed in the direction toward the minus pole of the electrical field are classified as non-activated thrombocytes, and thrombocytes having a movement path directed in the direction toward the plus pole of the electrical field are classified as activated thrombocytes.

Abstract: With a method for measurement of thrombocyte function, a solution is created, by which the sensitivity of individual thrombocytes can be measured with the least possible apparatus effort, with high throughput, by passing a liquid thrombocyte solution, in which the thrombocytes are present in isolated form, into a microfluidic chamber and brought into contact with at least one stimulant, wherein an electrical field directed transverse to the entry direction of the thrombocyte solution is applied to the chamber, and the movement path of the thrombocytes in the electrical field is observed and evaluated, in such a manner that thrombocytes having a movement path directed in the direction toward the minus pole of the electrical field are classified as non-activated thrombocytes, and thrombocytes having a movement path directed in the direction toward the plus pole of the electrical field are classified as activated thrombocytes.

Abstract: The invention relates to a method for the dielectric barrier electrospray ionization of liquid samples and for the subsequent mass spectrometric analysis of the generated sample ions, in which the respective liquid sample is conducted in a capillary-shaped feed channel, the surrounding wall of which comprises on the outer side, spaced from the free end, an electrode which is separated from the wall by a separating layer made of a dielectric material, wherein at a distance from the free end of the feed channel an inlet of a mass spectrometer forming a counter electrode is arranged, creating an ion formation clearance, the formed ions reaching an openable and closable trap of the mass spectrometer through the inlet, wherein a square-wave voltage is applied between the electrode and the inlet for generating the sample ions and the trap of the mass spectrometer is alternately opened and closed, and wherein the sample ions reaching the trap of the mass spectrometer are analyzed in the mass spectrometer.