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National Chung Hsing University Institutional Repository - NCHUIR > 工學院 > 生醫工程研究所 > 依資料類型分類 > 期刊論文 >  Dead volume free micro-machined electro-spray chip for mass spectrometry

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/131560

標題: Dead volume free micro-machined electro-spray chip for mass spectrometry
作者: Wang, G.J.;Yang, M.W.;Chang, Y.Z.
王國禎
關鍵字: mass spectrometry electro-spray chip;precise mechanical micro;machining;Taylor cone;microfabricated devices
日期: 2004
Issue Date: 2012-12-07 16:28:34 (UTC+8)
關連: Biomedical Microdevices, Volume 6, Issue 2, Page(s) 159-164.
摘要: Design and fabrication themes of a dead volume free electro-spray chip for mass spectrometry based on mechanical micro-machining approach is discussed in this article. To implement the dead volume free concept, a cantilever needle is embedded inside the micro-channel of the spray-chip such that there is no connecting joint between the sample wall and the spray-tip. To ensure that the proposed spray-chip is able to produce efficient Taylor cone, embedded needles with different cone angles are fabricated to produce an efficient experiment. Experiments to distinguish amphetamine by a LCQ type mass spectrometry are conducted. Experimental results show that the proposed dead volume free electro-spray chip is able to reach the desired goal. It is also found from the experiments that the ringlike cross-section of the needle embedded micro-channel is critical to the stability of the Taylor cone at the spray-tip. To ensure a stable Taylor cone can be produced at the spray-tip, an embedded needle with a smaller diameter is desired.
Relation: Biomedical Microdevices
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 王國禎
[依教師分類] 王國禎

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