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首页> 外文期刊>Journal of Applied Physics >A novel vibrational spectroscopy using spintronic-plasmonic antennas: Magneto-refractive surface-enhanced infrared absorption
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A novel vibrational spectroscopy using spintronic-plasmonic antennas: Magneto-refractive surface-enhanced infrared absorption

机译：使用旋转性 - 等离子体天线的新型振动光谱：磁折射表面增强的红外吸收

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摘要

We present experimental and theoretical results of the molecular sensing performance of a novel platform based on magnetic modulation of surface-enhanced infrared absorption spectroscopy. For this, we study the effect that molecular infrared vibrations of a PMMA layer have on the optical and magneto-refractive response of spintronic antennas. Specifically, a periodic array of rods is fabricated from giant-magneto-resistance Au/Ni_(81)Fe_(19) metallic multilayers, and the effect of depositing a layer of PMMA on top of the array is investigated from both experimental and theoretical points of view. We find that the relative changes induced by the infrared vibrations of PMMA on the magneto-refractive signal are larger than the relative changes induced on the optical transmission. This result indicates that the magneto-refractive response is more sensitive to the excitation of molecular vibrations than the optical response and fosters the development of a novel type of an infrared sensing technique based on spintronic antennas: Magneto-Refractive Surface-Enhanced Infrared Absorption (SEIRA) Spectroscopy.
机译：我们基于表面增强红外吸收光谱磁调制呈现新型平台的分子传感性能的实验和理论结果。为此，我们研究了PMMA层对旋转天线的光学和磁折射响应的分子红外振动的影响。具体地，从巨型磁阻Au / ni_（81）Fe_（19）金属多层制造了周期性的杆阵列，并且从实验和理论点研究了将PMMA层沉积在阵列顶部的效果看法。我们发现，由磁折射信号对PMMA的红外振动引起的相对变化大于光传输上引起的相对变化。该结果表明，磁折射响应对分子振动的激发比光学响应更敏感，并且促进基于Spintronic天线的新型红外传感技术的开发：磁折射表面增强的红外吸收（Seira ）光谱学。

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  • 来源
    《Journal of Applied Physics》 |2021年第7期|073103.1-073103.5|共5页
  • 作者

    Caspar Armelles; Luca Bergamini; Alfonso Cebollada; Nerea Zabala; Javier Aizpurua;

  • 作者单位

    Instituto de Micro y Nanotecnologia IMN-CNM-CSIC Isaac Newton 8 Tres Cantos Madrid 28760 Spain;

    Department of Electricity and Electronics FCT-ZTF UPV-EHU Bilbao 48080 Spain Materials Physics Center CSIC-UPV/EHU and DIPC San Sebastian 20018 Spain;

    Instituto de Micro y Nanotecnologia IMN-CNM-CSIC Isaac Newton 8 Tres Cantos Madrid 28760 Spain;

    Department of Electricity and Electronics FCT-ZTF UPV-EHU Bilbao 48080 Spain Materials Physics Center CSIC-UPV/EHU and DIPC San Sebastian 20018 Spain;

    Materials Physics Center CSIC-UPV/EHU and DIPC San Sebastian 20018 Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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