Terahertz spectra of electrolyte solutions under applied electric and magnetic fields

IF 1.9 4区物理与天体物理 Q3 OPTICS

Journal of the European Optical Society-Rapid Publications Pub Date : 2022-11-23 DOI:10.1051/jeos/2022013

Yan Shen, Qingjun Li, Jing Ding, Guoyang Wang, Fengxuan Zhang, Bo Su, Cunling Zhang

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引用次数: 0

Abstract

Most biomolecules require an aqueous environment to fully exert their biological activity. However, the rotation mode, vibration mode, and energy associated with the hydrogen bonding network of water are in the terahertz band, resulting in strong absorption. Therefore, it is difficult to detect liquid biological samples using the terahertz technology. Here, a high-transmittance double-layer microfluidic chip was prepared using a cycloolefin copolymer material with high transmittance of terahertz waves. Combined with terahertz time-domain spectroscopy, the terahertz spectral characteristics of deionized water, NaCl, NaCO3, and CH3COONa solutions were studied. The changes in the terahertz transmission intensity of these electrolyte solutions under constant electric and magnetic fields were measured. The results show that the terahertz spectra of different sodium salt solutions with the same concentration of 0.9 mol/l are different. Furthermore, the terahertz absorption coefficients of the different electrolyte solutions gradually decrease with the increase of their residence time under the electric field, which is contrary to the results obtained under the external magnetic field. This study provides a new idea for the detection of sodium salt solution and lays a foundation for the development of THz technology.

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外加电场和磁场作用下电解液溶液的太赫兹光谱

大多数生物分子需要水环境才能充分发挥其生物活性。然而，与水的氢键网络相关的旋转模式、振动模式和能量都在太赫兹波段，因此吸收较强。因此，使用太赫兹技术检测液体生物样品是困难的。本文采用高透射率的太赫兹环烯烃共聚物材料制备了高透射率双层微流控芯片。结合太赫兹时域光谱，研究了去离子水、NaCl、NaCO3和CH3COONa溶液的太赫兹光谱特性。测量了这些电解质溶液在恒定电场和磁场作用下的太赫兹透射强度变化。结果表明，相同浓度为0.9 mol/l的不同钠盐溶液的太赫兹光谱是不同的。此外，不同电解质溶液在电场作用下的太赫兹吸收系数随其停留时间的增加而逐渐减小，这与外磁场作用下的结果相反。本研究为钠盐溶液的检测提供了新的思路，为太赫兹技术的发展奠定了基础。

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

Journal of the European Optical Society-Rapid Publications 物理-光学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

5 weeks

期刊介绍： Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry. Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research. The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics. The journal covers both fundamental and applied topics, including but not limited to: Classical and quantum optics Light/matter interaction Optical communication Micro- and nanooptics Nonlinear optical phenomena Optical materials Optical metrology Optical spectroscopy Colour research Nano and metamaterials Modern photonics technology Optical engineering, design and instrumentation Optical applications in bio-physics and medicine Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.