{"title":"Nanorods-embedded Ring Resonator-based Plasmonic Sensor for Adulteration Detection in Honey Products","authors":"Rahul Pandey, Kamal Kishor Choure, Rukhsar Zafar, Gausia Qazi, Rajendra Mitharwal, Ghanshyam Singh, Santosh Kumar","doi":"10.1007/s11468-024-02507-x","DOIUrl":null,"url":null,"abstract":"<p>A highly sensitive plasmonic refractive index sensor using a circular ring resonator incorporating silver nanorods as defects are designed and investigated numerically in this article. The numerical investigation focuses on the impact of varying nanorod radius on the sensor’s performance. Results show that two distinct resonant dips in the transmittance spectrum are identified in the near-infrared region, where the second dip has found to have a heightened sensitivity which is particularly advantageous for chemical and biological sensing. The study reveals that increasing the nanorod radius enhances sensor sensitivity and results in a noticeable red shift in dip positions. The sensor attains a peak sensitivity of 2105 nm/RIU at nanorod radius of 22 nm. Furthermore, the proposed sensor is examined for its effectiveness in detecting adulteration in pure honey by sensing the change in resonance wavelength. The observations reveal the sensor’s capability to identify the percentage of externally introduced glucose and fructose in the honey by indicating shifts in resonance wavelength.</p>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"1 1","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasmonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s11468-024-02507-x","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
A highly sensitive plasmonic refractive index sensor using a circular ring resonator incorporating silver nanorods as defects are designed and investigated numerically in this article. The numerical investigation focuses on the impact of varying nanorod radius on the sensor’s performance. Results show that two distinct resonant dips in the transmittance spectrum are identified in the near-infrared region, where the second dip has found to have a heightened sensitivity which is particularly advantageous for chemical and biological sensing. The study reveals that increasing the nanorod radius enhances sensor sensitivity and results in a noticeable red shift in dip positions. The sensor attains a peak sensitivity of 2105 nm/RIU at nanorod radius of 22 nm. Furthermore, the proposed sensor is examined for its effectiveness in detecting adulteration in pure honey by sensing the change in resonance wavelength. The observations reveal the sensor’s capability to identify the percentage of externally introduced glucose and fructose in the honey by indicating shifts in resonance wavelength.
期刊介绍:
Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons.
Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.