III-V nitrides and performance of graphene on copper plasmonic biosensor

Mohanty, Goutam; Sahoo, B. K.

doi:10.1016/j.spmi.2016.03.040

Cited by 15 publications

(4 citation statements)

References 36 publications

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“…In addition, improving the optical conductivity and electrical conductivity of graphene effectively enhanced the sensitivity of sensing 53. These results provide proof that the conductivity of the surface improved performance of the SPR biosensor 53,54…”

Section: Resultssupporting

confidence: 54%

<p>High-affinity carboxyl-graphene oxide-based SPR aptasensor for the detection of hCG protein in clinical serum samples</p>

Chiu¹,

Kuo²,

Chen³

2019

IJN

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Background The use of functionalized graphene oxide (fGO) has led to a new trend in the sensor field, owing to its high sensitivity with regards to sensing characteristics and easy synthesis procedures. Methods In this study, we developed an ultra-sensitive carboxyl-graphene oxide (carboxyl-GO)-based surface plasmon resonance (SPR) aptasensor using peptides to detect human chorionic gonadotropin (hCG) in clinical serum samples. The carboxyl-GO based SPR aptasensor provided high affinity and stronger binding of peptides, which are great importance to allow for a non-immunological label-free mechanism. Also, it allows the detection of low concentrations of hCG, which are in turn considered to be important clinical parameters to diagnose ectopic pregnancies and paraneoplastic syndromes. Results The high selectivity of the carboxyl-GO-based SPR aptasensor for hCG recombinant protein was verified by the addition of the interfering proteins bovine serum albumin (BSA) and human serum albumin (HSA), which did not affect the sensitivity of the sensor. The carboxyl-GO-based chip can enhance the assay efficacy of interactions between peptides and had a high affinity binding for a k a of 17×10 6 M −1 S −1 . The limit of detection for hCG in clinical serum samples was 1.15 pg/mL Conclusion The results of this study demonstrated that the carboxyl-GO-based SPR aptasensor had excellent sensitivity, affinity and selectivity, and thus the potential to be used as disease-related biomarker assay to allow for an early diagnosis, and possibly a new area in the field of biochemical sensing technology.

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Section: Resultssupporting

confidence: 54%

<p>High-affinity carboxyl-graphene oxide-based SPR aptasensor for the detection of hCG protein in clinical serum samples</p>

Chiu¹,

Kuo²,

Chen³

2019

IJN

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“…Black phosphorus also known as phosphorene [34] shows ambipolar characteristic. Compared to graphene and TMD [35], black phosphorus possesses much higher surface to volume ration due to its puckered lattice structure and shows superior molecular adsorption energy in comparision to other 2D materials such as graphene and MoS 2 [36]. Although, graphene is stable in comparison to black phosphorus and possess extraordinary properties include good electrical and thermal conductivity, high electron mobility and have high flexibility even though due to absence of bandgap it has severe limitation for wider range of applications.…”

Section: Design Background and Theoretical Analysis Of Proposed Strmentioning

confidence: 99%

Effect of Perovskite material on performance of surface plasmon resonance biosensor

Srivastava¹,

Das

Prajapati³

2020

IET Optoelectronics

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“…The oxidation and stability issues of plasmonic materials can be solved by protecting the metal surface with a thin and inert layer that is impermeable to water, oxygen, and other corroding agent [23]. For instance, the bimetallic layer [25], two-dimensional (2D) structures of graphene [26], [27] and molybdenum disulfide [28], [29], and wurtzite nitride semiconductor [30], [31], [32] have been proposed as protective elements against metal corrosion. In addition to this, the thickness of noble metal can also affect the strength of SPR signal.…”

Section: Introductionmentioning

confidence: 99%

Capability of AgSiN/SU-8 Layer on Silver-Based SPR for Adulterated Honey Detection

Jaafar,

Othman,

Hasnan

et al. 2023

IEEE Access

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This study introduces the capability of the AgSiN/SU-8 layer on the silver-based SPR structure for water content detection in stingless bee honey. The 30% water content in pure honey was adulterated by water bath procedure until they reached 18% adulterated honey. The experiment was carried out for two different SPR structures, with and without AgSiN/SU-8 layer to examine its potential in protecting the silver metal from eroding and minimize the formation of the silver oxide. The resonance angles of adulterated honey solutions for these two SPR structures denote a similar behavior by shifting to a higher angle from the pure honey solution. It indicates that the AgSiN/SU-8 layer can select and detect the variation percentage of honey water content. After 24 hours, the Cr/Ag/AgSiN/SU-8 structure produces the equivalent resonance angle value with only 5.26% changes in minimum reflectivity. It shows that the AgSiN/SU-8 layer can protect the silver surface from erosion and preserve the SPR characteristic. Besides, the presence of the AgSiN/SU-8 layer on the silver surface is capable of decreasing the oxygen atomic percentage by 21.48%, hence minimizing the growth of silver oxide. This work is a preliminary study of the AgSiN/SU-8 layer to detect water content in stingless bee honey, at the same time can protect the silver surface from erosion and minimize the formation of the silver oxide.

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III-V nitrides and performance of graphene on copper plasmonic biosensor

Cited by 15 publications

References 36 publications

<p>High-affinity carboxyl-graphene oxide-based SPR aptasensor for the detection of hCG protein in clinical serum samples</p>

<p>High-affinity carboxyl-graphene oxide-based SPR aptasensor for the detection of hCG protein in clinical serum samples</p>

Effect of Perovskite material on performance of surface plasmon resonance biosensor

Capability of AgSiN/SU-8 Layer on Silver-Based SPR for Adulterated Honey Detection

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