THz properties of two food additives sodium solution based on microfluidic chips

IF 1.2 4区物理与天体物理 Q4 OPTICS

Journal of Modern Optics Pub Date : 2023-05-04 DOI:10.1080/09500340.2023.2273563

Bo Peng, Siyu Qian, Boyan Zhang, Qingjun Li, Bo Su, Hailin Cui, Shengbo Zhang, Cunlin Zhang

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引用次数: 0

Abstract

AbstractThe vibration and rotation energy levels of many molecules are in the terahertz (THz) band, so THz spectroscopy can be used to qualitatively identify substances. However, the THz spectrum of most molecules in aqueous solution is completely different from that of solid molecules, and they have strong absorption characteristics for THz waves. In this study, a microfluidic chip with very low THz wave absorption was designed, and the THz transmission spectra of food-additive sodium hexametaphosphate solution and sodium pyrophosphate solution were measured using THz time domain spectroscopy (THz-TDS). The results show that the THz transmission spectral intensity of the two sodium salt solutions increases with the increase of solution concentration, which is due to the influence of ion hydration process on hydrogen bonds between water molecules and changes the absorption of THz waves by water. This method lays a foundation for further study of the THz characteristics of electrolyte solutions.KEYWORDS: Terahertzmicrofluidic chipTHz-TDS systemsodium salt solutionsodium hexametaphosphatesodium pyrophosphate Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China (NSFC 61575131).

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基于微流控芯片的两种食品添加剂钠溶液太赫兹特性研究

摘要许多分子的振动和旋转能级都在太赫兹(THz)波段，因此太赫兹光谱可以用于定性识别物质。然而，水溶液中大多数分子的太赫兹谱与固体分子的太赫兹谱完全不同，它们对太赫兹波有很强的吸收特性。本研究设计了一种极低太赫兹吸收的微流控芯片，利用太赫兹时域光谱(THz- tds)测量了食品添加剂六偏磷酸钠溶液和焦磷酸钠溶液的太赫兹透射光谱。结果表明，两种钠盐溶液的太赫兹透射光谱强度随溶液浓度的增加而增大，这是由于离子水化过程对水分子间氢键的影响，改变了水对太赫兹波的吸收。该方法为进一步研究电解质溶液的太赫兹特性奠定了基础。关键词:太赫兹微流控芯片thz - tds系统钠盐溶液六偏磷酸钠焦磷酸钠披露声明作者未报告潜在利益冲突。本研究得到国家自然科学基金(NSFC: 61575131)资助。

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来源期刊

Journal of Modern Optics 物理-光学

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

2.6 months

期刊介绍： The journal (under its former title Optica Acta) was founded in 1953 - some years before the advent of the laser - as an international journal of optics. Since then optical research has changed greatly; fresh areas of inquiry have been explored, different techniques have been employed and the range of application has greatly increased. The journal has continued to reflect these advances as part of its steadily widening scope. Journal of Modern Optics aims to publish original and timely contributions to optical knowledge from educational institutions, government establishments and industrial R&D groups world-wide. The whole field of classical and quantum optics is covered. Papers may deal with the applications of fundamentals of modern optics, considering both experimental and theoretical aspects of contemporary research. In addition to regular papers, there are topical and tutorial reviews, and special issues on highlighted areas. All manuscript submissions are subject to initial appraisal by the Editor, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees. General topics covered include: • Optical and photonic materials (inc. metamaterials) • Plasmonics and nanophotonics • Quantum optics (inc. quantum information) • Optical instrumentation and technology (inc. detectors, metrology, sensors, lasers) • Coherence, propagation, polarization and manipulation (classical optics) • Scattering and holography (diffractive optics) • Optical fibres and optical communications (inc. integrated optics, amplifiers) • Vision science and applications • Medical and biomedical optics • Nonlinear and ultrafast optics (inc. harmonic generation, multiphoton spectroscopy) • Imaging and Image processing