Patent attributes
An assembly comprises a first liquid guide having an inlet, an outlet, and a liquid-conducting layer comprising a first material. The liquid-conducting layer extends between the inlet and the outlet. A second liquid guide has an inlet, an outlet, and a liquid-conducting layer comprising a second material. The liquid-conducting layer extends between the inlet and the outlet. At least a portion of the liquid-conducting layer of the second liquid guide overlaps the liquid-conducting layer of the first liquid guide such that, when a first liquid flows along the liquid-conducting layer of the first liquid guide and a second liquid flows along the liquid-conducting layer of the second liquid guide, the second liquid contacts the first liquid along the portion of the liquid-conducting layer of the second liquid guide that overlaps the liquid-conducting layer of the first liquid guide.
