Abstract: A magnetic transducer including an electrically conductive shield (ECS) which is disposed between the substrate and first magnetic shield is described. The ECS is preferably embedded in an insulating undercoat layer. The ECS is preferably electrically isolated from the magnetic sensor element and is externally connected to a ground available in the disk drive through the arm electronics. Two alternative ways for connecting the ECS to a ground are described. In one embodiment which is only effective with single-ended input type arm electronics, the ECS is connected to a ground through a via to a lead pad for the read head which is connected to the ground of the arm electronics. In a second and more preferred embodiment a separate lead pad is included on the head to allow the ECS to be connected to electronic or case ground when the head is installed in the arm. The extent of the ECS should be sufficiently large to cover the read head portion of the transducer, i.e.

Abstract: A method for performing microoperations on cells consists in that a cell is ecured to a micro suction cup and the cell membrane is perforated by a microinstrument. The cell membrane is pierced in a spot under the micro suction cup, the microinstrument being introduced through the recess of the micro suction cup, which is filled with an isotonic solution.A device for performing microoperations on cells comprises a microinstrument (1) installed in a holder (2) rigidly secured to a movable tip (3) a three-way micromanipulator (4), and a micro suction cup (5). The latter is rigidly secured to the holder (2), the microinstrument (1) is located in the recess of the micro suction cup (5) coaxially therewith and is connected to the holder (2) by a means (7a) ensuring the reciprocating movement of the microinstrument (1) along the axis of the micro suction cup (5).