Design of a TW-SLIM Module for Dual Polarity Confinement, Transport, and Reactions.
Design of a TW-SLIM Module for Dual Polarity Confinement, Transport, and Reactions.
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DOI：
10.1007/s13361-017-1680-5
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发表时间：
2017-07
影响因子：
3.2
通讯作者：
Smith RD
中科院分区：
文献类型：
--
作者：
Garimella SVB;Webb IK;Prabhakaran A;Attah IK;Ibrahim YM;Smith RD
在这里，我们描述了在无损离子操纵(SLIM)结构中执行双极性离子限制、输运、离子迁移率分离和反应的仪器方法。以往基于射频产生的赝势和直流场进行横向限制的离子限制方法不能同时捕获极性相反的离子。在这里，我们探索提供两个离子极性的横向限制的替代方法。行波离子迁移率(IM)在如此细小的空间中经历的两个极性的分离会导致两个极性的离子向相同的方向迁移，并表现出相似的分离。讨论了冲浪和IM分离两种情况下的离子运动(以及两极的相对运动)。在行波速度小于离子速度的冲浪条件下，这两个极性在各自的势极值中无损且无反应地传输(高绝对电压区限制负极性，低绝对势区域由正极性填充)。在分离模式下，当行波速度大于离子速度时，这两个极性在行波上翻转时会发生相互作用。提出了尽量减少两个离子群重叠的策略，以防止分离过程中的反应损失。考虑了两个布居相互作用的时间尺度的理论处理(注入到双极性超薄器件的直流无场区域)，并提出了允许离子/离子相互作用和在4托的双极性操纵的超薄设计。
Here we describe instrumental approaches for performing dual polarity ion confinement, transport, ion mobility separations and reactions in Structures for Lossless Ion Manipulations (SLIM). Previous means of ion confinement in SLIM based upon rf- generated pseudopotentials and dc fields for lateral confinement cannot trap ions of opposite polarity simultaneously. Here we explore alternative approaches to provide lateral confinement of both ion polarities. Traveling wave ion mobility (IM) separations experienced by both polarities in such SLIM cause ions of both polarities to migrate in the same directions and exhibit similar separations. The ion motion (and relative motion of the two polarities) under both surfing and IM separation conditions are discussed. In surfing conditions, where the traveling wave speed is less than the ion velocity, the two polarities are transported losslessly and non-reactively in their respective potential minima (higher absolute voltage regions confines negative polarities and lower absolute potential regions are populated by positive polarities). In separation mode, where the traveling wave speed is greater than the ion velocity, the two polarities can interact during rollovers over the traveling wave. Strategies to minimize overlap of the two ion populations to prevent reactive losses during separations are presented. A theoretical treatment of the time scales over which two populations (injected into a dc field-free region of the dual polarity SLIM device) interact is considered, and SLIM designs for allowing ion/ion interactions and other manipulations with dual polarities at 4 torr are presented.
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影响因子：
7.4
作者：
Chen TC;Ibrahim YM;Webb IK;Garimella SV;Zhang X;Hamid AM;Deng L;Karnesky WE;Prost SA;Sandoval JA;Norheim RV;Anderson GA;Tolmachev AV;Baker ES;Smith RD
通讯作者：
Smith RD
DOI：
10.1007/s13361-014-0976-y
发表时间：
2014-11
影响因子：
3.2
作者：
Garimella, Sandilya V. B.;Ibrahim, Yehia M.;Webb, Ian K.;Tolmachev, Aleksey V.;Zhang, Xinyu;Prost, Spencer A.;Anderson, Gordon A.;Smith, Richard D.
通讯作者：
Smith, Richard D.
影响因子：
2.3
作者：
Hogan, JM;McLuckey, SA
通讯作者：
McLuckey, SA
影响因子：
7.4
作者：
McLuckey, SA;Reid, GE;Wells, JM
通讯作者：
Wells, JM
影响因子：
7.4
作者：
He, M;Reid, GE;McLuckey, SA
通讯作者：
McLuckey, SA