公开(公告)号：US11499902B2

公开(公告)日：2022-11-15

申请号：US16477746

申请日：2018-01-17

Applicant: Aalto University Foundation sr

Inventor： Quan Zhou ,  Robin Ras ,  Ville Liimatainen ,  Maja Vuckovac

IPC: G01N13/02 ,  B01L3/00

Abstract: A force sensing probe (100) for sensing snap-in and/or pull-off force of a liquid droplet (111) brought into and/or separated from contact with a hydrophobic sample surface (151), respectively, comprises: a sensing tip (101); a sensor element (102) connected to the sensing tip, capable of sensing sub-micronewton forces acting on the sensing tip in a measurement direction; and a droplet holding plate (104) having a first main surface (105) and a hydrophilic second main surface (106) connected via a peripheral edge surface (107), and being attached via the first main surface to the sensing tip (101) perpendicularly relative to the measurement direction for receiving and holding a liquid droplet (111) as attached to the second main surface; the droplet holding plate comprising an electrically conductive surface layer (115), the first and the second main surfaces and the peripheral edge surface being defined by the surface layer.