A micromachined interface for airborne sample-to-liquid transfer and its application in a biosensor system | Zendy

Thomas Frisk | Zendy; David Rönnholm | Zendy; Wouter van der Wijngaart | Zendy; Göran Stemme | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

A micromachined interface for airborne sample-to-liquid transfer and its application in a biosensor system

Author(s) -

Thomas Frisk,

David Rönnholm,

Wouter van der Wijngaart,

Göran Stemme

Publication year - 2006

Publication title -

lab on a chip

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.064

H-Index - 210

eISSN - 1473-0197

pISSN - 1473-0189

DOI - 10.1039/b612526n

Subject(s) - adsorption , interface (matter) , analytical chemistry (journal) , microfluidics , materials science , rendering (computer graphics) , transfer (computing) , optoelectronics , nanotechnology , acoustics , chromatography , chemistry , computer science , computer graphics (images) , physics , gibbs isotherm , organic chemistry , parallel computing

A novel micromachined interface for airborne sample-to-liquid adsorption and droplet-to-liquid transfer was designed and fabricated. It enables a robust sheet liquid flow serving as an adsorption site. The interface was characterised for flow and pressure properties and tested successfully for the transfer/adsorption of different samples. A qualitative theoretical model of the device characteristics is presented. We also used the interface to introduce a novel method and system for fast detection of dust- and vapour-based narcotics and explosives traces. The microfluidic vapour-to-liquid adsorption interface was coupled to a set of downstream QCM sensors. The system was tested successfully, with 50 ng cocaine samples rendering 15 Hz frequency shifts and with 100 ng heroine samples rendering 50 Hz frequency shifts. Gravitation invariance of the open liquid interface was demonstrated successfully, with the interface mounted upside down as well as vertically. The detection time was reduced to half of the time needed in previous systems. Machine size, weight and cost were reduced.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research