Patent ID: 8695641
Filing Date: 2014-04-15
Classification: B01J,B01L,Y10T

Abstract:
1. A method of forming a microfluidic probe head, the method comprising: configuring a first layer, a second layer, and a first tubing port extending from an upper face of the first layer, wherein the first layer has a first via enabling fluid communication between the first port and a lower face of the first layer; the second layer comprising a first aperture on a face thereof, and a first microchannel enabling fluid communication between an upper face of the second layer, facing the lower face of the first layer, and the first aperture; and the head further configured to enable fluid communication between the first via and the first microchannel, wherein at least a portion of the first microchannel is a groove open on the upper face of the second layer, and closed by a portion of a lower face of a layer of the head, and wherein the microfluidic probe head further comprises a second tubing port, a second via, a second aperture and a second microchannel, configured similarly as the first tubing port, the first via, the first aperture and the first microchannel; the head being further configured to enable distinct fluid communication between the first via and the first aperture on the one hand, and between the second via and the second aperture on the other hand, and to allow for aspirating at one of the apertures some fluid deposited via the other aperture on a surface close to the apertures.