Abstract: According to various embodiments, there is provided a sensor device including a separation reservoir configured to contain a plurality of target molecules; a first electric field generator configured to provide a first electric field across the separation reservoir, the first electric field having a first direction; a second electric field generator configured to provide a second electric field across the separation reservoir, the second electric field having a second direction, wherein the second direction is at least substantially perpendicular to the first direction; and a plurality of sensing elements arranged on a side of the separation reservoir, wherein each sensing element of the plurality of sensing elements is configured to detect target molecules within a vicinity of the respective sensing element.

Abstract: According to embodiments of the present invention, a microfilter is provided. The microfilter includes a first porous layer and a second porous layer arranged one over the other, wherein the first porous layer includes a plurality of first pores defined through the first porous layer, wherein the second porous layer includes a plurality of second pores defined through the second porous layer, and wherein one or more respective second pores are arranged to at least substantially overlap with each respective first pore such that a respective opening defined between a perimeter of the each respective first pore and a perimeter of each of the one or more respective second pores is smaller than a diameter of each first pore. According to further embodiments of the present invention, an apparatus for separating a biological entity from a sample volume is also provided.