Design, Modeling, and Fabrication of MEMS-Based Multicapillary Gas Chromatographic Columns

Zebra GC: A fully integrated micro gas chromatography system

“…As compared to conventional columns, they suffer from lower peak capacity, which can be resolved to some extent with novel architectures like semi-packed [12] and multi-capillary columns [13].…”

“…Currently, considerable research efforts in the development of micro-gas chromatography (µGC) systems are directed towards developing and optimizing high-performance microfabricated components such as preconcentrators (µPC) [8][9][10], separation column (µSC) [11][12][13], and gas detectors [14][15][16][17]. However, integration of the various components is a critical yet underexplored aspect.…”

Carbon Nanotube Stationary Phase in a Microfabricated Column for High-Performance Gas Chromatography

“…These drawbacks have hindered miniaturization of GC instruments for which a wide range of applications is foreseen [1]. Recent developments in the micro-fabrication of GC systems using micromachining technology have demonstrated the potential for reductions in size, power consumption, and analysis time compared to conventional GC systems [2][3][4][5][6][7].…”

“…Numerous studies have focused on miniaturizing the separation columns to develop micro-GC columns that can quickly separate samples with high efficiency [3][4][5][6]. One of the major challenges in developing micro-GC columns is the coating of the conventional polymerbased stationary phase [7,8]. Therefore, it is crucial to research and develop an efficient stationary phase for micro-GC columns.…”

Nanoporous Bi2Te3 thermoelectric based Knudsen gas pump.

“…Some of these applications are gas chromatography [1][2][3][4], spectroscopy [5][6][7], microplasma manufacturing [8][9][10], energy harvesting, gas manipulation, micropropulsion, chemical sensing devices [11], cooling in microelectronics, drug delivery, bypass medical devices [12], protein immunoassays, and pneumatic actuation of Lab-on-chip devices (LOC) [13][14][15][16]. The type of thermal pump investigated in this work is called the Knudsen pump.…”