Terahertz-capillary electrophoresis (THz-CE) for direct detection of separated substances in solutions

IF 2.8 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Express Pub Date : 2024-01-29 DOI:10.1364/ome.500594

Keiko Kitagishi, Takayuki Kawai, Masayoshi Tonouchi, and Kazunori Serita

引用次数: 0

Abstract

We present a novel technique for capillary electrophoresis (CE) using terahertz (THz) waves, namely “THz-CE,” which enables us to sensitively detect separated substances in a solution flowing in a hollow of capillary whose inner diameter is smaller than 100 µm. Such THz detection could be achieved by utilizing the near-field interaction between a solution filled in a capillary and a point THz source that was locally generated by optical rectification in a nonlinear optical crystal irradiated with a femtosecond pulse laser. Here, we investigated the performance of THz-CE numerically and experimentally, and succeeded in observing the electrophoretic chromatogram for the separation between acetic acid and n-propionic acid by THz-CE.

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太赫兹毛细管电泳（THz-CE）用于直接检测溶液中的分离物质

我们提出了一种利用太赫兹（THz）波进行毛细管电泳（CE）的新技术，即 "THz-CE"，它使我们能够灵敏地检测在内径小于 100 微米的中空毛细管中流动的溶液中的分离物质。这种太赫兹检测可以通过利用毛细管中的溶液与点太赫兹源之间的近场相互作用来实现，点太赫兹源是通过飞秒脉冲激光照射非线性光学晶体中的光学整流局部产生的。在此，我们对 THz-CE 的性能进行了数值和实验研究，并成功观测了 THz-CE 分离醋酸和正丙酸的电泳色谱图。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials Express MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS

CiteScore

5.50

自引率

3.60%

发文量

377

审稿时长

1.5 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optical Materials Express (OMEx), OSA''s open-access, rapid-review journal, primarily emphasizes advances in both conventional and novel optical materials, their properties, theory and modeling, synthesis and fabrication approaches for optics and photonics; how such materials contribute to novel optical behavior; and how they enable new or improved optical devices. The journal covers a full range of topics, including, but not limited to: Artificially engineered optical structures Biomaterials Optical detector materials Optical storage media Materials for integrated optics Nonlinear optical materials Laser materials Metamaterials Nanomaterials Organics and polymers Soft materials IR materials Materials for fiber optics Hybrid technologies Materials for quantum photonics Optical Materials Express considers original research articles, feature issue contributions, invited reviews, and comments on published articles. The Journal also publishes occasional short, timely opinion articles from experts and thought-leaders in the field on current or emerging topic areas that are generating significant interest.