Abstract:
System to measure blood coagulation related parameters comprising one first channel (6) adapted to contain a blood sample; said system containing, at least partially, an expandable material which is able to increase its volume when activated by an exciting source; said system furthermore comprising several excitable regions distributed close to said first channel (6), in such a way that, when one of said excitable region is activated, said expandable material increases to such an extend that the channel cross section is reduced to a location situated at or near to said excitable region.
Abstract:
Circuit microfluidique comprenant des microcanaux (24, 26) contenant des fluides différents (F1, F2) sur une interface (30) desquels un faisceau laser est focalisé en (32) pour former une pompe, une vanne, ou un mélangeur par exemple.
Abstract:
A substrate having a surface with reversibly switchable properties. The surface comprises a nanolayer of a material that switches from a first conformation stateto a second conformation state when an external stimulus is applied. When the nanolayer is in the first conformation state, the surface is characterized by a first property, and when the nanolayer is in the second conformation state, the surface is characterized by a second property.
Abstract:
본 발명에 따른 박막 밸브 장치는 생물학적 또는 생화학적 분석에 요구되는 유체를 저장하거나, 생물학적 또는 생화학적 반응을 수행할 수 있는 하나 이상의 챔버, 상기 하나 이상의 챔버를 연결하여 상기 유체의 이동을 가능하게 하는 유로, 상기 유로 상에 연통하도록 배치되는 유공, 상기 유공을 폐쇄하기 위한 유공 폐쇄막, 유공과 유공 폐쇄막으로 구성된 박막 밸브, 적층되어 상기 유로, 유공 및 챔버를 형성하는 복수개의 기질, 상기 적층된 복수개의 기질, 상기 유로, 상기 유공, 상기 챔버, 및 상기 박막 밸브가 집적화된 디스크, 상기 박막 밸브에 열원을 공급하기 위한 열원 장치, 및 상기 열원 장치로부터 공급된 후 상기 유공 폐쇄막을 통과한 열원량을 측정하기 위한 열원 감지기 및 포커싱 액츄에이터를 제어하기 위한 피드백 제어 장치를 포함한다.
Abstract:
The present invention relates to a method of controlling a flow in a micro conduit system, and particularly a micro conduit system comprising one or more capillary- stop valves (6,6') wherein the stopping ability of the capillary stop valve is overcome with the help of an acoustic wave source.
Abstract:
Microfluidic valves constructed from elastomcric materials as the valve body components and employing shape memory alloy in wire form as the valve actuator. Various configurations of individual valves having both normally open and normally closed states are described. Apparatus using such valves and providing logic functionality with fluidic logic outputs are discussed. Apparatus that can be used for materials processing at the nano- or micro- scale are presented. Various forms of logical control of valve arrays are explained.
Abstract:
Microfluidic valves constructed from elastomcric materials as the valve body components and employing shape memory alloy in wire form as the valve actuator. Various configurations of individual valves having both normally open and normally closed states are described. Apparatus using such valves and providing logic functionality with fluidic logic outputs are discussed. Apparatus that can be used for materials processing at the nano- or micro- scale are presented. Various forms of logical control of valve arrays are explained.
Abstract:
A fluidic device comprising a housing having an inlet (10) and an outlet (12) defining a fluid flow path (14) therebetween. A channel (16) is provided within the housing, which channel (16) is filled with a material (18), such as wax, which supports a reversible, electromagnetic energy activated change in plasticity and/or deformability. The channel (16) filled with material is covered (or enclosed) by a resiliently flexible membrane (20). A port (22) is provided in the housing for the application of pressure or vacuum to the material (18) in the channel (16). A valve seat (24) is provided between the inlet (10) and the outlet. When no electromagnetic energy is applied to the wax (18), it is in a substantially solid state and remains stationary within the channel (16). In use, to open the valve, the wax is melted by the application of electromagnetic energy thereto, and a vacuum is applied to the port (22), such that the portion of the membrane (20) adjacent the valve seat (24) is pulled down, away from the valve seat (24) as the molten wax is drawn back by the vacuum, thereby opening the fluid flow path (14) between the inlet (10) and the outlet (12). With the vacuum still being applied to the port (22), the wax is allowed (or caused) to cool, and the wax (18) solidifies, locking the valve in the open position. In order to close the valve, pressure is applied to the port (22) and the wax (18) is melted by the application of electromagnetic energy thereto. The pressure applied via port (22) pushes the wax forward along the channel (16) toward the fluid flow path (14). The build-up of pressure causes the portion of the membrane (20) adjacent the valve seat (24) to be pushed upwards toward the valve seat (24), thereby blocking the fluid flow path (14) and closing the valve. With pressure being applied to the port (22), the wax (18) is allowed (or caused) to cool, such that it solidifies, locking the valve in the closed position.
Abstract:
The invention relates to a fluidic system (52) having a first volume (V1), a second volume (V2) and a membrane (54) geometrically separating the two volumes, which has an open-pore microstructure for the passage of a first medium (M1) and a second medium (M2). There is a contact angle (Theta1) between the interface of the media and the pore surface. A first electrical field (U1) in the region of the membrane and a first electromagnetic radiation and a first heating of the membrane define a first state (Z1), in which the membrane is not wetted or is less wetted by the first medium (M1) and is more heavily wetted by the second medium (M2) such that a first contact angle Theta1 > 90° is formed between the pore surface and the interface. The first medium (M1) and the second medium (M2) and the pore surface have a surface energy of which at least one surface energy can be reversibly changed in such a way that a second contact angle Theta2