CHEMICAL ETCHING OF EMITTER TIPS

CHEMICAL ETCHING OF EMITTER TIPS

A method of forming a capillary tube for electrospray ionisation (ESI) having at least one tip with a desired tip profile. The method includes providing a pre-finished capillary tube of substantially homogenous material. The capillary tube has a first end and an internal bore. The first end of the p...

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Hauptverfasser: BACHUS, KYLE JOHN JAMES, FOO, HERBERT TZE CHEUNG, STOKES, YVONNE MARIE, GIDDINGS, JOSEF ADAM, EBENDORFF-HEIDEPRIEM, HEIKE
Format: Patent
Sprache:eng ; fre
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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creator BACHUS, KYLE JOHN JAMES
FOO, HERBERT TZE CHEUNG
STOKES, YVONNE MARIE
GIDDINGS, JOSEF ADAM
EBENDORFF-HEIDEPRIEM, HEIKE
description A method of forming a capillary tube for electrospray ionisation (ESI) having at least one tip with a desired tip profile. The method includes providing a pre-finished capillary tube of substantially homogenous material. The capillary tube has a first end and an internal bore. The first end of the pre-finished capillary tube is wet-etched in an etchant for an etch duration. A protective fluid flows through the internal bore of the capillary tube at a flow rate during the etch duration and the flow rate and the etch duration are determined to obtain the desired tip profile below a liquid level of the etchant.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
title CHEMICAL ETCHING OF EMITTER TIPS
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