论文标题
漂移管离子迁移率的微型设计
A Miniaturized Design of Drift Tube Ion Mobility Spectrometry
论文作者
论文摘要
漂移管离子迁移率光谱法（DTIMS）是一种用于检测痕量化学物质的设备，在实践工程中始终需要其微型化设计。在先前的研究中，在微型化设计中，很少关注DTIM的反应区域。在这封信中，在反应区域中引入了一系列具有均匀间隔的电极，以实现设备的微型化。发现添加的电极扩大了TP快门前离子群的有效覆盖面积，并增加了在脉冲周期内进入漂移区域的离子浓度，这可以有效地降低设备的整体尺寸。另外，研究和优化了电极的厚度与间隔（T/I）比的影响，尽管其紧凑的大小紧凑，但通过适当的T/I比显着提高了DTIM的分辨率。该设备的原型是制造的，与现有商业产品相比，DTIM的大小减少了约50％，而测得的分辨率则提高了80％。
The drift tube ion mobility spectrometry (DTIMS) is a device used to detect trace chemicals, and its miniaturized design is always desired in practice engineering. In previous studies, little attention has been paid to the reaction region of the DTIMS in the miniaturization design. In this letter, a series of electrodes with uniform interval is introduced in the reaction region to achieve miniaturization of the device. It is found that the added electrodes enlarge the effective coverage area of the ion swarms in front of the TP shutter and increase the concentration of ions entering the drift region within the pulse period, which can effectively reduce the overall size of the device. In addition, the effect of the thickness-to-interval (T/I) ratio of electrodes is investigated and optimized, and the resolution of the DTIMS is significantly improved with appropriate T/I ratio despite its compact size. The prototype of the device is fabricated, and the size of the DTIMS is reduced by about 50%, while the measured resolution is improved by 80% as compared with the existing commercial product.
