Patent ID: 8030690

Claim:
Detection device made from a substrate having an upper surface that defines or is parallel to a principal plane of the device, this device comprising at least one transistor formed firstly from a gate and secondly a conducting element comprising a source and a drain connected together by a semiconductor forming a vertical channel, in the sense that each of respective surfaces of the conducting element and of the gate facing each other defines respective planes approximately parallel to each other and also approximately perpendicular to the principal plane of the device, wherein the principal plane passes through the transistor drain, the source, the channel and the gate, and this principal plane being approximately parallel to said substrate, the current propagation direction in the channel between the source and the drain being contained in this principal plane, the gate and the conducting element being capable of moving relative to each other, one being fixed and the other being connected to a mechanical structure, free to move in the principal plane, wherein the source and the drain are located in a same layer of the device as viewed from a top view, and wherein said same layer contains the principal plane such that the principal plane is defined by said same layer.