Multistage deterministic lateral displacement devices, methods of forming the devices, and methods of separating a fluid mixture including particles having three or more particle sizes generally include a first module and at least one additional module. Each module includes a condenser portion and a separate portion. The condenser portion is generally configured to focus a streamline of all particles to a center of a channel whereas the separator separates the streamline of all particles into two different streamlines. One of the streamlines focuses the largest particles in the fluid mixture along a sidewall of the channel and the other streamline of smaller particles is between opposing sidewalls that define the channel. Each additional module can be used to further separate the largest particles remaining in the fluid mixture from the smaller particles.

Multistage deterministic lateral displacement devices, methods of forming the devices, and methods of separating a fluid mixture including particles having three or more particle sizes generally include a first module and at least one additional module. Each module includes a condenser portion and a separate portion. The condenser portion is generally configured to focus a streamline of all particles to a center of a channel whereas the separator separates the streamline of all particles into two different streamlines. One of the streamlines focuses the largest particles in the fluid mixture along a sidewall of the channel and the other streamline of smaller particles is between opposing sidewalls that define the channel. Each additional module can be used to further separate the largest particles remaining in the fluid mixture from the smaller particles.

A filter subassembly, having a first screen comprising a fabric that has mesh elements, the mesh size of which determines how effectively particles are prevented from penetrating therethrough, wherein a second screen is provided at a distance from the first screen, and the two screens are arranged in series.

The present invention relates to an inlet screen adapted to be arranged at the water inlet (8) of a hydropower plant and comprises a plurality of elongated bars (20), said bars (20) being separated by a distance holding means, each elongated bar (20) having in its elongation a proximal portion and a distal portion, and an upstream region and a downstream region, said upstream and downstream regions being at an angle in relation to said proximal and distal portions, at least one of said bars (20) defining a space (36; 36a) extending along at least a portion of the elongation of said bar (20), said bar (20) being provided with an electric heating means (31). In accordance with the invention, said elongated bar has an elongated intermediate portion (38a), said space (36; 36a) being defined in either of the upstream region (35a) and the downstream region (35b), said intermediate portion (38a) extending along the elongation of the bar (20) between the upstream region (35a) and the downstream region (35b), said electric heating means (31) comprising at least one electric heating member (37) being introduced into said space (36; 36a).

Proposed is a filter assembly. The filter assembly includes: a housing configured to form a flow path for allowing a fluid to move in a first direction or a second direction opposite to the first direction; a plate inserted into the housing and formed therein with through-holes; and a plurality of protrusions protruding from the plate in the second direction.

Proposed is a filter assembly. The filter assembly includes: a housing configured to form a flow path for allowing a fluid to move in a first direction or a second direction opposite to the first direction; a plate inserted into the housing and formed therein with through-holes; and a plurality of protrusions protruding from the plate in the second direction.

A microscale cell filter for trapping a sub-portion of cells within a sample has: an inlet flow channel; an outlet flow channel; and a plurality of post elements arranged between inlet and outlet. The plurality of post elements is interspaced, forming a plurality of gaps, each gap being formed in between two adjacent post elements. The plurality of post elements is arranged such that a flow of the sample from the inlet to the outlet passes through the plurality of gaps. The plurality of post elements is arranged such that a width of each gaps is 3 to 6 micrometers. Each of the plurality of post elements has an elongation such that each gap has an aspect ratio between its width and its height being larger than 3.5, thereby trapping the sub-portion of the cells within the sample at an upstream side of the plurality of post elements.

A microscale cell filter for trapping a sub-portion of cells within a sample has: an inlet flow channel; an outlet flow channel; and a plurality of post elements arranged between inlet and outlet. The plurality of post elements is interspaced, forming a plurality of gaps, each gap being formed in between two adjacent post elements. The plurality of post elements is arranged such that a flow of the sample from the inlet to the outlet passes through the plurality of gaps. The plurality of post elements is arranged such that a width of each gaps is 3 to 6 micrometers. Each of the plurality of post elements has an elongation such that each gap has an aspect ratio between its width and its height being larger than 3.5, thereby trapping the sub-portion of the cells within the sample at an upstream side of the plurality of post elements.

A filling shoe including a circular slurry opening extending between a filter plate side and a filter chamber side. A flange surrounds the slurry opening, and has an annular groove surrounding it and being arranged for receiving a filter medium. An outer edge of the body has a bevel towards the filter plate side on at least a part of the filling shoe. An outer edge of the flange is also provided with a bevel. Particularly, the filling shoe is formed as a single uniform piece of elastomer. A pin hole is provided so as to extend through the flange a position corresponding to the annular groove. A filling shoe arrangement, a filter medium assembly and a method for providing a filter medium with a filling shoe are also disclosed.

Microscale and/or mesoscale condenser arrays that can facilitate microfluidic separation and/or purification of mesoscale and/or nanoscale particles and methods of operation are described herein. An apparatus comprises a condenser array comprising pillars arranged in a plurality of columns, wherein a pillar gap greater than or equal to about 0.5 micrometers is located between a first pillar of the pillars in a first column of the columns and a second pillar of the plurality of pillars in the first column, and wherein the first pillar is adjacent to the second pillar. The first ratio can be characterized by D.sub.x/D.sub.y is less than or equal to a first defined value, wherein D.sub.x represents a first distance across the lattice in a first direction, wherein D.sub.y represents a second distance across the lattice in a second direction, and wherein the first direction is orthogonal to the second direction.