Sensitivity Enhancement of Surface Plasmon Resonance-based Biosensor using Aluminium-Cobalt-Tungsten Disulfide-Graphene Heterostructure
Journal: Journal of Environmental Nanotechnology (Vol.11, No. 4)Publication Date: 2022-12-30
Authors : G. Alagu Vibisha Department of Physics Chikkanna Government Arts College Tiruppur TN India Malek G. Daher S. M. Habibur Rahman Z. Jaroszewicz K.B. Rajesh Rajan Jha;
Page : 05-13
Keywords : Surface Plasmon Resonance; Biosensor; Sensitivity; Cobalt; 2D materials;
Abstract
An attempt has been made to enhance the sensitivity of a high-sensitive surface plasmon resonance (SPR) biosensor with an aluminium-cobalt bimetallic layer covered by a tungsten disulfide-graphene heterostructure. A thin layer of cobalt coated on an aluminium layer contributed substantially to increase the sensor performance. The use of Al and Co metals instead of noble metals like Ag and Au reduced the cost of the sensor. Further, tungsten disulfide (WS2) layers were employed to improve sensitivity and protect the bimetal Al-Co from becoming oxidized, whereas graphene served as the biomolecule trapping medium. The number of WS2 and graphene layers have optimized for better sensitivity. The proposed biosensor Al-Co-WS2-graphene structure displayed an excellent sensitivity of 300°/RIU, convenient for sensing biomolecules.
Other Latest Articles
- Synthesis and Studies on Polymer Electrolyte Membrane using Polyvinyl Alcohol, Polyvinylidene Fluoride and Ammonium Bromide as Dopants for Proton-conducting Electrolyte
- Mandamus Emirnamesi ve Kıbrıs Türk Hukukundaki Yeri
- “Hukukun Bir Dalı Bakımından Hukuka Aykırı Olan Fiil Hukukun Diğer Dalları Bakımından da Hukuka Aykırıdır” Önermesinin Doğruluk Değeri
- Mülteci Hukuku Açısından İslâm Hukuku ile Birleşmiş Milletler Mülteciler Yüksek Komiserliği’nin (BMMYK/UNHCR) Koruyuculuğunu Yaptığı 1951 Cenevre Sözleşmesi ve 1967 Protokolü Arasında Metodolojik Bir Mukayese
- Yargıtay Kararları ve Doktrin Tartışmaları Işığında Ölüme Bağlı Tasarrufların İptal Sebeplerinin Değerlendirilmesi
Last modified: 2022-12-30 21:41:08