Evaluation of Indium Tin Oxide Based Surface Plasmon Resonance Sensor for Near-IR Applications

Authors

  • Anjitha M Department of Physics, Amrita Vishwa Vidyapeetham, Amritapuri, India
  • Niveditha Nair Department of Physics, Amrita Vishwa Vidyapeetham, Amritapuri, India
  • Varsha T. Babu Department of Physics, Amrita Vishwa Vidyapeetham, Amritapuri, India
  • Nishi G. N. Department of Electronics and Communication Engineering, Amrita Vishwa Vidyapeetham, Amritapuri, India
  • Athulya S. Department of Electronics and Communication Engineering, Amrita Vishwa Vidyapeetham, Amritapuri, India
  • Sharika E Department of Electronics and Communication Engineering, Amrita Vishwa Vidyapeetham, Amritapuri, India
  • Tauseef Ahmed Department of Electronics Engineering and Centre of Excellence in Renewable Energy, IIT(ISM) Dhanbad, India
  • Mukul Kumar Das Department of Electronics Engineering and Centre of Excellence in Renewable Energy, IIT(ISM) Dhanbad, India
  • Rita Rizzoli IMM-Consiglio Nationale delle Ricerche, via Gobetti 101, Bologna, Italy
  • Caterina Summonte IMM-Consiglio Nationale delle Ricerche, via Gobetti 101, Bologna, Italy
  • Sanjay K. Ram Department of Physics, Amrita Vishwa Vidyapeetham, Amritapuri, India

Keywords:

Surface plasmons, Kretschmann configuration, Transparent conducting oxides, Indium tin oxide, Biosensors, metal oxides

Abstract

Surface plasmon resonance (SPR) based optical biosensors hold strong potential for high-speed detection of changes in optical properties resulting from the alteration of the chemical or biochemical composition of the analyte. Traditionally, noble metals have been investigated for such plasmonic properties, while alternative materials like metal oxides have recently attracted attention for the potential to be tuned for applications in different spectral regions. This chapter addresses the design of a highly sensitive biosensor based on a conducting oxide, indium tin oxide (ITO), for sensing in the near infra-red (NIR) range, up to wavelengths as low as the ones used in telecommunications (~1.55 µm). The analysis of the sensor performance leads us to introduce a new performance parameter, the comprehensive signal quality factor of the SPR curve, which is valuable to assess the quality of sensing. Our results also demonstrate the effectiveness of rf-magnetron sputtered ITO material, which has been less explored in literature for plasmonic applications.

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Published

2021-07-30

How to Cite

M, A., Nair, N., Babu, V. T., N., N. G., S., A., E, S., Ahmed, T., Das, M. K., Rizzoli, R., Summonte, C., & Ram, S. K. (2021). Evaluation of Indium Tin Oxide Based Surface Plasmon Resonance Sensor for Near-IR Applications. Research Transcripts in Materials, 1, 1–16. Retrieved from https://grinrey.com/journals/index.php/rtm/article/view/32

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