Publication

MEMS-based Porous Silicon Preconcentrators Filled with Carbopack-B for Explosives Detection

Nico de Rooij
2014
Conference Papers

Abstract

In this paper we report the detection of explosive compounds using a miniaturized gas preconcentrator (μGP) made of porous silicon (PS) filled in with Carbopack B as an adsorbent material. The μGP includes also a platinum heater patterned at the backside and fluidic connectors sealed on the glass cover. Our μGP is designed and optimized through fluidic and thermal simulations for meeting the requirements of trace explosives detection. The thermal mass of the device was minimized while the flow rate was maximized for a reduced cycle time. A detection limit below 200ppb of 2, 4-dinitrotoluene (DNT) was demonstrated with our Carbopack-PS μGP. © 2014 The Authors. Published by Elsevier Ltd.

Official source

https://infoscience.epfl.ch/entities/publication/dd281224-4260-4609-bbc5-4e968b4852c4

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Nico de Rooij
2014
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dd281224-4260-4609-bbc5-4e968b4852c4

About this result

Related concepts (21)

Explosive

An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture containing at least two substances.

Glass

Glass is a non-crystalline solid that is often transparent, brittle and chemically inert. It has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling (quenching) of the molten form; some glasses such as volcanic glass are naturally occurring. The most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the primary constituent of sand.

Thermal mass

In building design, thermal mass is a property of the mass of a building that enables it to store heat and provide inertia against temperature fluctuations. It is sometimes known as the thermal flywheel effect. The thermal mass of heavy structural elements can be designed to work alongside a construction's lighter thermal resistance components to create energy efficient buildings.