Microfluidic device for detecting and characterizing at least one analyte, for example a cell, in a sample fluid

A device for detecting at least one analyte in a sample fluid, the device comprising:

• a fluid channel having a longitudinal channel axis and structured to allow the sample fluid containing at least one analyte to pass through the fluid channel;
• at least one pair of electrodes;
• an electric field generator for generating an electric field between the at least one pair of electrodes;
• a detector for detecting the at least one analyte in the sample fluid based on passage through the electric field;
• wherein each electrode of the at least one pair of electrodes has a three-dimensionally structured electrode surface that is curved about the longitudinal channel axis;
• and
• wherein the device comprises a first substrate and a second substrate, the first substrate having a first recess with one electrode of the at least one pair of electrodes placed therein, and the second substrate having a second recess with another electrode of the at least one pair of electrodes placed therein, the first and the second recesses at least partially forming the fluid channel.