A well for electrically stimulating at least one cell. The well includes a bottom portion and comprises an adaptive electrode arrangement for introducing an electric field into the well. The adaptive electrode arrangement includes a pair of electrodes disposed within the well. Each electrode of the pair of electrodes has a distal end and is independently and axially displaceable relative to the other electrode and the bottom portion of the well. The distal end of each electrode of the pair of electrodes is in contact with the bottom portion of the well, ensuring a uniform and constant electric field is applied within the well.