B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 19/00 (2006.01) B01L 3/02 (2006.01) B41J 2/14 (2006.01) B41J 2/16 (2006.01) G01N 35/10 (2006.01)
Patent
CA 2415574
The invention concerns an injecting and proportioning head, with at least a thermal injection and proportioning device to supply a specific amount of liquid, comprising: a recessed planar substrate (21) forming a liquid reservoir and covered, sequentially, with a non-stressed dielectric insulating membrane (22, 23) with high thermal resistance, then an etched semiconductor layer forming a heating resistor (25); said membrane and said semiconductor layer being traversed by an orifice (24) in fluid communication with the reservoir; a photolithographic resin layer in the form of a nozzle (27) on said membrane, the channel (28) of said nozzle being located in the extension of said orifice and the volume of said channel enabling to control the specific amount of liquid to be supplied. The invention also concerns a method for making said head. The method further comprises a functionalising or addressing system in particular for chemical and biological microreactors comprising such a head.
Tête d'injection et de dosage, avec au moins un dispositif d'injection et de dosage thermique pour fournir une quantité déterminée de liquide, comprenant : - un substrat plan évidé (21) formant réservoir de liquide et recouvert, dans l'ordre, d'une membrane isolante diélectrique (22, 23) non contrainte de résistance thermique élevée, puis d'une couche semi-conductrice gravée formant résistance chauffante (25) ;- ladite membrane et ladite couche semi- conductrice étant traversées par un orifice (24) en communication fluidique avec ledit réservoir de liquide ;- une couche de résine photolithographiée en forme de buse (27) sur ladite membrane, le canal (28) de ladite buse se situant dans le prolongement dudit orifice et le volume dudit canal permettant de contrôler la quantité déterminée de liquide à fournir. Procédé de fabrication de cette tête. Système de fonctionnalisation ou d'adressage notamment de microréacteurs chimiques ou biochimiques comprenant cette tête.
Conedera Veronique
Esteve Daniel
Fabre Norbert
Gue Anne-Marie
Centre National de La Recherche Scientifique
Goudreau Gage Dubuc
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