Microfluidic design rules for capillary slot-based electrospray sources

被引：23

作者：

Brinkmann, M

Blossey, R

Arscott, S

Druon, C

Tabourier, P

Le Gac, S

Rolando, C

机构：

[1] IEMN, Interdisciplinary Res Inst, F-59652 Villeneuve Dascq, France

[2] CNRS, UMR 8520, IEMN, F-59652 Villeneuve Dascq, France

[3] Univ SCi & Technol Lille, CNRS, UMR 8009, LCOM, F-59655 Villeneuve Dascq, France

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 11期

关键词：

D O I：

10.1063/1.1792381

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We formulate microfluidic design principles for electrospray ionization sources based on a rectangular capillary slot formed by two triangular cantilevers. Spontaneous imbibition of the test liquids into the slot by capillary action provides a robust mechanism for liquid transport from a reservoir to the cantilever tip where an electrospray is generated upon application of a voltage. The correct functioning of the source requires the liquid bridging the slot to have a negative Laplace pressure. Imbibition is controlled by the ratio of slot width to height w/h and the intrinsic contact angles theta(w), theta(s) of the liquid with the slot walls and the cantilever faces, respectively. Based on these parameters we derive a simple criterion for the complete filling of the slot. (C) 2004 American Institute of Physics.

引用

页码：2140 / 2142

页数：3

共 14 条

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