scholarly journals Hybrid Heterostructures for SPR Biosensor

2020 ◽  
Author(s):  
Md. Shamim Anower ◽  
Md. Mahabubur Rahman ◽  
M. Saifur Rahman
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Transition Metal Dichalcogenides ◽  
Medical Diagnostics ◽  
Hybrid Structures ◽  
Spr Biosensor ◽  
Highly Sensitive ◽  
Metal Dichalcogenides ◽  
Comparison Table ◽  
Potential Use

Surface plasmon resonance (SPR) based biosensors have been enormously studied in the last decade for their better sensitivity. In recent years hybrid heterostructures are getting popularity to implement these SPR biosensors for their superior sensing capability. This chapter demonstrates the details of SPR technology with two recently studied prism-based hybrid heterostructures. These heterostructures are made up of conventional SPR biosensors with two additional layers of recently invented transition metal dichalcogenides, platinum di-selenide (PtSe2), and highly sensitive 2D material, tungsten di-sulfide (WS2). Angular interrogation method is discussed to investigate the sensing capabilities of the sensors which prove the superiority of the Ag-PtSe2-WS2 structure. The sensing capability of this structure has been found at least 1.67 times higher than that of the conventional non-hybrid structures, respectively, with comparable FOM and QF. A comparison table has been provided at the end of this chapter which also shows the impressive performance of the hybrid heterostructures for SPR biosensors. Proper demonstration with a suitable example of this chapter will emphasize the potential use of hybrid heterostructure based SPR biosensors in prospective medical diagnostics and biomedical detection applications.

scholarly journals Improved Transition Metal Dichalcogenides-Based Surface Plasmon Resonance Biosensors

2019 ◽  
Vol 4 (2) ◽  
pp. 49 ◽  
Author(s):  
Mohammad Hasibul Hasan Hasib ◽  
Jannati Nabiha Nur ◽  
Conrad Rizal ◽  
Kamrun Nahar Shushama
Keyword(s):  
Surface Plasmon Resonance ◽  
Transition Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Transition Metal Dichalcogenides ◽  
Polarized Light ◽  
Detection Accuracy ◽  
Metal Dichalcogenides ◽  
Similar Materials ◽  
Improved Performance

Surface plasmon resonance (SPR) biosensors based on transition metal dichalcogenides (TMDC) materials have shown improved performance in terms of sensitivity, detection accuracy (DA), and quality factor (QF) over conventional biosensors. In this paper, we propose a five-layers model containing black phosphorus (BP) and TMDC (Ag/BP/WS2) in Kretschmann configuration. Using TM-polarized light at 633 nm, we numerically demonstrate the highest sensitivity (375°/RIU), DA (0.9210), and QF (65.78 1/RIU) reported so far over similar materials. Refractive index (RI) of the coupling prism has also played an essential role in enhancing the performance of these biosensors. The research on TMDC materials is still new, and these materials bring about opportunities to develop a new class of biosensor.

Improved Performance of Platinum Diselenide Based Surface Plasmon Resonance Biosensor Using Silicon

2020 ◽  
Vol 18 (9) ◽  
pp. 711-718
Author(s):  
Rashmi Tiwari ◽  
Sachin Singh ◽  
R. K. Yadav ◽  
Pooja Lohia ◽  
D. K. Dwivedi
Keyword(s):  
Surface Plasmon Resonance ◽  
Transition Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Transition Metal Dichalcogenides ◽  
Silicon Layer ◽  
Detection Accuracy ◽  
Two Dimensional ◽  
Surface Plasmon Resonance Biosensor ◽  
Metal Dichalcogenides

After the discovery of graphene in 2004, two-dimensional materials have attracted attention at large scale because of their peculiar structure and extraordinary properties. As they have large potential in future nano electronics, two-dimensional transition metal dichalcogenides has become most focus topic of study. Transition metal dichalcogenides with tunable finite band gap and significant transitional behavior are much suitable for the construction of electronic and optoelectronic devices of high-performance. However, platinum diselenide is group-10 transition metal dichalcogenides which occur naturally in one phase transition, which has been theoretically predicted as an excellent material. The proposed structure of surface plasmon resonance (SPR) -based biosensor consists of a silicon and two-dimensional nanomaterial platinum diselenide. The performance parameters of proposed biosensor (surface plasmon resonance-based) such as detection accuracy, figure of merit, sensitivity, full width at half maximum have been investigated. The sensitivity, detection accuracy, full width half maximum and figure of merit of proposed surface plasmon resonance biosensor having silver (50 nm), silicon (2 nm) and one layer of platinum diselenide with 2 nm thickness at 633 nm wavelength is 2200RIU–1 , 0.20 deg–1, 4.980 and 44.22 RIU–1 respectively. Silicon sheet is used in the middle of the Ag and platinum diselenide to prevent the oxidation of silver and enhance the sensitivity of platinum diselenide based surface plasmon resonance biosensor. The sensitivity of conventional surface plasmon resonance biosensor and the proposed surface plasmon resonance biosensor without silicon layer is 1700RIU–1 and 2000RIU–1 respectively. Surface plasmon resonance biosensor of device structure CaF2/Ag/Si/PtSe2 has higher sensitivity in comparison to device structures CaF2/Ag (conventional) and CaF2/Ag/PtSe2 (without Silicon Layer) by 29.41% and 10% respectively. Although the highest sensitivity obtained is 2620RIU–1 for 60 nm silver with 3 nm silicon layer except the platinum diselenide layer.

scholarly journals 2D Nanomaterial-Based Surface Plasmon Resonance Sensors for Biosensing Applications

Micromachines ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 779
Author(s):  
Sachin Singh ◽  
Pravin Kumar Singh ◽  
Ahmad Umar ◽  
Pooja Lohia ◽  
Hasan Albargi ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Binding Energy ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Transition Metal Dichalcogenides ◽  
Characteristic Parameters ◽  
Kretschmann Configuration ◽  
Spr Sensor ◽  
Metal Dichalcogenides ◽  
2D Nanomaterials

The absorption and binding energy of material plays an important role with a large surface area and conductivity for the development of any sensing device. The newly grown 2D nanomaterials like black phosphorus transition metal dichalcogenides (TMDCs) or graphene have excellent properties for sensing devices’ fabrication. This paper summarizes the progress in the area of the 2D nanomaterial-based surface plasmon resonance (SPR) sensor during last decade. The paper also focuses on the structure of Kretschmann configuration, the sensing principle of SPR, its characteristic parameters, application in various fields, and some important recent works related to SPR sensors have also been discussed, based on the present and future scope of this field. The present paper provides a platform for researchers to work in the field of 2D nanomaterial-based SPR sensors.

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