Indium phosphide and black phosphorus employed surface plasmon resonance sensor for formalin detection: numerical analysis

A hybrid Kretschmann configuration-based surface plasmon resonance biosensor is investigated to detect formalin in water was proposed. The modification is done in the conventional sensor by adding the indium phosphide (InP) and black phosphorus (BP) material layer. The silver (Ag) metal thickness is...

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Bibliographic Details
Published inOptical engineering Vol. 61; no. 1; p. 017101
Main Authors Karki, Bhishma, Uniyal, Arun, Sharma, Tarun, Pal, Amrindra, Srivastava, Vivek
Format Journal Article
LanguageEnglish
Published Society of Photo-Optical Instrumentation Engineers 01.01.2022
SPIE
Subjects
Analysis
Formaldehyde
Indium
Numerical analysis
Semiconductors
Sensors
Silver
Torture
Rhode Island
India
indium phosphide
formalin detection
chemical sensor
sensitivity
black phosphorus (BP)
surface plasmon resonance
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Summary:A hybrid Kretschmann configuration-based surface plasmon resonance biosensor is investigated to detect formalin in water was proposed. The modification is done in the conventional sensor by adding the indium phosphide (InP) and black phosphorus (BP) material layer. The silver (Ag) metal thickness is 45 nm, the optimized thickness of the metal for the proposed design. The thickness of the InP and BP materials 2 and 0.34 nm are considered. For three InP layers and one BP layer, the maximum sensitivity of 250.2  deg  /  RIU is achieved. The BP layer is used to improve the biorecognition ability of the sensor. The performance of the sensor is analyzed using the angular interrogation method. The proposed sensor is investigated for the aqueous sensing medium. The InP is an air-stable semiconductor material and has applications in chemical, medical, and biological fields.
ISSN:0091-3286
1560-2303
DOI:10.1117/1.OE.61.1.017101