Present study demonstrates the fiber-optic localized surface plasmon resonance (LSPR) based sensitive biosensor for detection of Shigella bacterial species. The proposed sensor is comprised multi-core fiber (MCF) having seven cores arranged in a hexagonal shape and spliced with single-mode (SMF) efficient detection. An increase evanescent waves (EWs) coupling modes between MCF was achieved by etching process controlled manner. also increases refractive index sensitivity (RIS) sensor....

This article presents the photonic crystal fiber (PCF) based surface plasmon resonance (SPR) biosensor for early detection of malaria disease in humans by measurement variation red blood cells (RBCs). In proposed PCF, two layers air holes are arranged a hexagonal lattice structure and thin film gold-coating is used over PCF occurrence SPR phenomena. It occurs when polariton (SPP)-mode coupled with core-mode during phase-matching conditions. Malaria infected RBCs samples filled into which...

The purpose of this article is to propose an optical fiber sensor probe based on the localized surface plasma resonance (LSPR) technique for detection creatinine in aquaculture. sensing functionalized through use gold nanoparticles (AuNPs), niobium carbide (Nb2CTx) MXene, and creatinase (CA) enzyme. intrinsic total internal reflection (TIR) mechanism modified increase evanescent field intensity using a heterogeneous core mismatch tapering structure (i.e., convex fiber-tapered seven...

Alanine aminotransferase (ALT), a critical component of human blood, is inextricably associated with liver injury. The current study develops novel biosensor based on the localized surface plasmon resonance (LSPR) principle for detection ALT analytes at concentrations ranging from 0 to 1000 Units per liter (U/L). According authors' knowledge, this first time an optical fiber structure taper-in-taper has been developed biosensing applications. It fabricated using three-electrode semi-vacuum...

This paper proposes a photonic crystal fiber (PCF) based plasmonic biosensor for the detection of various blood compositions like red cells (RBCs), hemoglobin (HB), white (WBCs), plasma, and water. The finite element method (FEM) has been used to simulate quantitatively evaluate this biosensor. gold titanium dioxide coated PCF operates on surface plasmon resonance (SPR) theory, where layer acts as material, improves adhesion between surface. SPR occurs at interface sensing channel, when core...

In this work, a localized plasmon-based sensor is developed for para-cresol (p-cresol) - water pollutant detection. A nonadiabatic [Formula: see text] of tapered optical fiber (TOF) has been experimentally fabricated and computationally analyzed using beam propagation method. For optimization sensor's performance, two probes are proposed, where probe 1 immobilized with gold nanoparticles (AuNPs) 2 the AuNPs along zinc oxide (ZnO-NPs). The synthesized metal nanomaterials were characterized by...

The promising properties of photonic crystal fibers (PCFs) have sparked the interest a number research organizations. Due to PCF's air holes, liquid or gas samples can be inserted into them. This permits well-controlled interaction between confined light and sensing samples, enabling development novel applications. That was never conceivable with conventional optical fibers. PCF applications in fields divided physical sensors biochemical based on parameter being measured. Physical measure...

This work presents a surface plasmon resonance (SPR) sensor based on Gallium (Ga)-doped-Zinc oxide (ZnO) and Ti <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> C xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> T xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> (MXene) for sensitivity enhancement. The smaller resistivity high conductivity of the pulsed layer deposited Ga-doped-ZnO are used to improve up (264.59 °/RIU). detection...

Surface Plasmon Resonance (SPR) techniques are highly accurate in detecting biomolecular like blood group measurement, food adulteration, milk adulteration and recently developing as a rapid detection for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus. In order to validate the clinical diagnosis, Real-time reverse transcriptase-polymerase chain reaction (RT-PCR) of nasopharyngeal swabs has been utilized, which is time consuming expensive. For fast SARS-CoV-2 virus, SPR...

Glucose, an essential nutrient to the metabolism of organisms, is closely related human health. Here, a novel serial quadruple tapered structure-based localized surface plasmon resonance (LSPR) sensor employed achieve accurate detection glucose level in body. Gold nanoparticles (AuNPs) are immobilized on taper fiber (SQTF) induce LSPR. Furthermore, graphene oxide (GO) and multi-wall carbon nanotubes (MWCNTs) used increase binding sites enzymes improve sensing performance probe. In our work,...

In this work, authors have developed a portable, sensitive, and quick-response fiber optic sensor that is capable of detection Aflatoxins B1 (AFB1) quantitatively qualitatively. Using multi-mode (MMF) multi-core (MCF), the MMF-MCF-MCF-MMF structure based on symmetric transverse offset splicing waist-expanded taper fabricated. The evanescent waves are enhanced to form strong field by etching surface with hydrofluoric acid. To successfully excite localized plasmon resonance phenomenon, gold...

Histamine is a biologically active molecule that serves as reliable predictor of the quality fish. In this work, authors have developed novel humanoid-shaped tapered optical fiber (HTOF) biosensor based on localized surface plasmon resonance (LSPR) phenomenon to detect varying histamine concentrations. experiment, and distinctive tapering structure has been using combiner manufacturing system contemporary processing technologies. Graphene oxide (GO)/multi-walled carbon nanotubes (MWCNTs) are...

The development of a p-cresol biosensor for aquaculture, marine life, and healthcare applications is described in this study. based on localized surface plasmon resonance (LSPR) employs novel tapered-in-tapered fiber (TiTF) probe. Gold nanoparticles (AuNPs) copper oxide nanoflowers (CuO-NFs) TiTF structures are immobilized developed probe's performance was evaluated by measuring the response to variety solution concentrations. Combining AuNPs CuO-NFs improves sensitivity anti-interference...

A surface plasmon resonance (SPR) refractometric sensor based on gold (Au) and titanium dioxide (TiO2) coated Photonic Crystal Fiber (PCF) is presented for the quick detection of various types cancerous cells. The cells their corresponding normal are both considered to be liquid each with unique refractive index (RI). Normally these found in form suitable media (food) required live cancerous/normal cell lines. Also our case, samples easy pump into sensing channel proposed PCF by employing...

Fiber optic sensors are widely used in environmental sensing because of their high precision, compact size, remote operation, chemical inertness and multiplexing capabilities. This paper reviews the design, fabrication, deployment fiber for various applications using grating technology. We conclude with a review different applications, focusing on factors, hazardous gases, volatile organic compounds biomolecules, marine salinity, civil structure health monitoring. Our main objective is to...

Optical fiber sensors show potential for monitoring multiple parameters essential to the growth and health of fish, particularly pH value aquaculture medium. Two types optical sensors, using tapered silica single mode fibers with a Bragg grating inscribed D-shaped plastic (home-made reused) were produced. A pH-sensitive layer made polyaniline (PANI) was deposited on fibers' surface. The demonstrated reproducibility repeatability sensitivity −0.22 ± 0.02 dB/pH, −472 9 Counts/pH, −(26 2) × 102...