Nanospace Ab

Molecular Fingerprint Sweden Ab

Andersson, Per Ola

Nikolajeff, Fredrik

Karlsson, Mikael

Österlund, Lars

Mikael Karlsson

Johan Bejhed

Per Ola Andersson

Fredrik Nikolajeff

Lars Österlund

Optical sensor unit for infra red evanescence wave spectroscopy (IR-EWS) analysis of chemical and biological substances in an analyte, comprising a waveguide with a sensor surface to be put into contact with the analyte, wherein the sensor surface is provided with an affinity enhancing layer. There is further provided a method of producing an optical sensor unit.

Optical sensor unit for evanescence wave spectroscopy

A single use valve () comprises a plate () having an internal filter structure (). A sealing substance () covers an inlet () to the filter structure (). A heater arrangement () is arranged at the plate () in the vicinity of the sealing substance () for converting electrical current into heat and thereby melting or evaporating the sealing substance (). The heater arrangement () conducts at least a part of the current, and preferably the entire current, along a conduction path not including the sealing substance (). The melting of the sealing substance () thereby becomes independent on the existence of a complete electrical connection through the sealing substance (). The heater arrangement () has therefore preferably its main heat emission in an area surrounding the sealing substance (). The sealing substance () can be of any non-porous material.

Single use valve

Growing community of inventors

Uppsala, Sweden

Mikael Karlsson