Khalid E. Alzahrani
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View article: Solvothermal eco-synthesis of Ag-Doped ZnO nanowires: investigation of structural, optical, dielectric, and electrochemical properties
Solvothermal eco-synthesis of Ag-Doped ZnO nanowires: investigation of structural, optical, dielectric, and electrochemical properties Open
This study explores the electrochemical and dielectric properties of silver (Ag) doped zinc oxide nanowires (ZnO NWs) synthesized via a green solvothermal method using Trigonella foenum-graecum extract. X-ray diffraction confirmed the form…
View article: Enhanced Clean Energy Generation through Capacitive Electrode Utilization in Reverse Electrodialysis
Enhanced Clean Energy Generation through Capacitive Electrode Utilization in Reverse Electrodialysis Open
In this study, we explore the potential of a novel energy generation method, Capacitive Reverse Electrodialysis (CRED), which combines seawater and river water to produce electricity. CRED integrates a membrane stack, similar to Reverse El…
View article: Investigating adsorption and removal of divalent Ca2+ and Pb2+ ions from aqueous solutions by gamma-irradiation using quartz tuning fork (QTF) sensor technique
Investigating adsorption and removal of divalent Ca2+ and Pb2+ ions from aqueous solutions by gamma-irradiation using quartz tuning fork (QTF) sensor technique Open
In this study, gold-coated quartz tuning forks (QTFs) sensing devices functionalized with self-assembled monolayers (SAM) of a lower-rim functionalized calix[4]arene methoxy ester were used for the detection of divalent Ca2+ and Pb2+ ions …
View article: Effects of low-dose gamma radiation on DNA measured using a quartz tuning fork sensor
Effects of low-dose gamma radiation on DNA measured using a quartz tuning fork sensor Open
Despite the expected direct effects of radiation on DNA through its direct interaction with the biomolecule, research indicates that radiation also interacts with the DNA’s environment, resulting in indirect effects. Therefore, in this stu…
View article: Gold nanostructures on polyelectrolyte-brush-modified cellulose membranes as a synergistic platform for uric acid detection
Gold nanostructures on polyelectrolyte-brush-modified cellulose membranes as a synergistic platform for uric acid detection Open
In this study, we present a convenient approach utilizing gold nanostructures coated cellulose membrane for the quantification of uric acid in an aqueous solution. The synthesis of system was achieved by functionalizing cellulose membrane …
View article: Functionalization of quartz tuning fork sensor with a thin layer of dopamine for enhanced sensitivity
Functionalization of quartz tuning fork sensor with a thin layer of dopamine for enhanced sensitivity Open
Quartz tuning fork (QTF) sensors are widely used in various sensing applications due to their high sensitivity, stability, and accuracy. This study explores the functionalization of QTF sensors with a thin coating of polydopamine which can…
View article: Development of a microcantilever-based biosensor for detecting Programmed Death Ligand 1
Development of a microcantilever-based biosensor for detecting Programmed Death Ligand 1 Open
The ongoing global concern of cancer worldwide necessitates the development of advanced diagnostic and therapeutic strategies. The majority of recent detection strategies involve the employment of biomarkers. A critical biomarker for cance…
View article: Effect of Applied AC Voltage on the Performance of Non-Faradaic Impedimetric Biosensors
Effect of Applied AC Voltage on the Performance of Non-Faradaic Impedimetric Biosensors Open
Electrochemical impedance spectroscopy based non-faradaic biosensors are promising low-cost and rapid detection tool for a variety of biomarkers. Unlike faradaic impedimetric biosensors, non-faradaic impedimetric biosensors are redox-free …
View article: Fabrication of a free-standing Ti <sub>3</sub> C <sub>2</sub> T <sub> <i>x</i> </sub> -PTh counter electrode <i>via</i> interfacial polymerization for dye-sensitized solar cells
Fabrication of a free-standing Ti <sub>3</sub> C <sub>2</sub> T <sub> <i>x</i> </sub> -PTh counter electrode <i>via</i> interfacial polymerization for dye-sensitized solar cells Open
The current work involves the fabrication of a MXene-Polythiophene (Ti 3 C 2 T x -PTh) composite via interfacial polymerization, alongside its deployment as a counter electrode (CE) or photocathode in dye-sensitized solar cells (DSSCs).
View article: Experimental and computational DFT, drift-diffusion studies of cobalt-based hybrid perovskite crystals as absorbers in perovskite solar cells
Experimental and computational DFT, drift-diffusion studies of cobalt-based hybrid perovskite crystals as absorbers in perovskite solar cells Open
Lead-free perovskite crystals are synthesized and studied using density functional theory. drift-diffusion modelling identifies optimal cell performance by varying parameters.
View article: Label free detection of vitamin D by microcantilever-based aptasensor
Label free detection of vitamin D by microcantilever-based aptasensor Open
Vitamin D deficiency or insufficiency is a growing public health problem. In this work, a novel and sample approach based on microcantilever for measuring the level of 25-hydroxyvitamin D (25(OH)D) was proposed. The Bruno aptamer was utili…
View article: Toward the Real-Time and Rapid Quantification of Bacterial Cells Utilizing a Quartz Tuning Fork Sensor
Toward the Real-Time and Rapid Quantification of Bacterial Cells Utilizing a Quartz Tuning Fork Sensor Open
The quantitative evaluation of bacterial populations is required in many studies, particularly in the field of microbiology. The current techniques can be time-consuming and require a large volume of samples and trained laboratory personne…
View article: Quartz tuning fork-based biosensor for the direct detection of human cytomegalovirus
Quartz tuning fork-based biosensor for the direct detection of human cytomegalovirus Open
Human cytomegalovirus (HCMV) possess great threat to immunocompromised patients and pregnant women since It can cause disability if left untreated. Especially for unborn babies, if the virus was not detected at early stages, it can cause d…
View article: Impact of natural melanin doping on the structural, optical and dielectric characteristics of the PVP/CMC blend
Impact of natural melanin doping on the structural, optical and dielectric characteristics of the PVP/CMC blend Open
Undoped and doped polyvinyl pyrrolidone/ carboxymethyl cellulose (PVP/CMC: 50/50%) blended polymers with melanin were formed. X-ray diffraction analysis confirmed the amorphous nature of all blends. Scanning electron microscopy results con…
View article: The Effect of Counterions on the Detection of Cu2+ Ions in Aqueous Solutions Using Quartz Tuning Fork (QTF) Sensors Modified with L-Cysteine Self-Assembled Monolayers: Experimental and Quantum Chemical DFT Study
The Effect of Counterions on the Detection of Cu2+ Ions in Aqueous Solutions Using Quartz Tuning Fork (QTF) Sensors Modified with L-Cysteine Self-Assembled Monolayers: Experimental and Quantum Chemical DFT Study Open
In this study, a sensing device employing a gold-coated quartz tuning fork (QTF) modified with a self-assembled monolayer (SAM) of L-cysteine was evaluated for the sensitive detection of Cu2+ ions in aqueous solutions. Three copper (II) sa…
View article: Microelectromechanical system‐based biosensor for label‐free detection of human cytomegalovirus
Microelectromechanical system‐based biosensor for label‐free detection of human cytomegalovirus Open
The human cytomegalovirus (HCMV) is an asymptomatic common virus that is typically harmless, but in some cases, it can be life threatening. Thus, there is an urgent need to develop novel diagnostic methods and strengthen the efforts to com…
View article: Detection of Volatile Alcohol Vapors Using PMMA-Coated Micromechanical Sensors: Experimental and Quantum Chemical DFT Analysis
Detection of Volatile Alcohol Vapors Using PMMA-Coated Micromechanical Sensors: Experimental and Quantum Chemical DFT Analysis Open
Micromechanical sensors, in which the sensor response is created as a result of molecular interactions on the sensors’ surfaces, have been employed as a powerful technique for rapid and sensitive detection of low concentrations of chemical…
View article: Probing the Influence of Crosslinking Layer Incubation Time on the Performance of Non-Faradaic Impedimetric Biosensors
Probing the Influence of Crosslinking Layer Incubation Time on the Performance of Non-Faradaic Impedimetric Biosensors Open
Non-faradaic impedimetric biosensors have received a wide interest due to their direct detection approach. The crosslinking layer in these biosensors has to be dense to avoid permeation of ions into the electrode to allow direct detection …
View article: Prevalence and classification of accessory navicular bone: a medical record review
Prevalence and classification of accessory navicular bone: a medical record review Open
BACKGROUND: The accessory navicular bone (ANB) is one of the most common accessory bones in the foot. Certain pathologies, such as posterior tibial tendon insufficiency are associated with ANB, and should be differentiated from midfoot and…
View article: Utilizing photothermally induced oscillation damping parameters for the determination of bacterial load suspended in microfluidic resonators
Utilizing photothermally induced oscillation damping parameters for the determination of bacterial load suspended in microfluidic resonators Open
Microchannel resonators containing a miniaturized volume of a solution can have various applications in different fields. In this study, a microchannel cantilever was loaded with a solution containing a very small number of Pseudomonas flu…
View article: Smart Nanocarrier Based on Poly(oligo(ethylene glycol) methyl ether acrylate) Terminated pH-Responsive Polymer Brushes Grafted Mesoporous Silica Nanoparticles
Smart Nanocarrier Based on Poly(oligo(ethylene glycol) methyl ether acrylate) Terminated pH-Responsive Polymer Brushes Grafted Mesoporous Silica Nanoparticles Open
A platform technology based on inorganic/organic nanoparticles for carrying drugs could be of enormous potential benefit in treating cancer. Surface modification of the nanoparticles with pH-responsive and biocompatible polymers can improv…
View article: Architectural and Ultrastructural Variations of Human Leukocyte-Rich Platelet-Rich Fibrin and Injectable Platelet-Rich Fibrin
Architectural and Ultrastructural Variations of Human Leukocyte-Rich Platelet-Rich Fibrin and Injectable Platelet-Rich Fibrin Open
Background: Platelet-rich fibrin (PRF) architecture and ultrastructure plays a crucial role in regulating and coordinating the cellular functions and provides a physical architecture, mechanical stability, and biochemical cues necessary fo…
View article: Surface modification of pH-responsive poly(2-(tert-butylamino)ethyl methacrylate) brushes grafted on mesoporous silica nanoparticles
Surface modification of pH-responsive poly(2-(tert-butylamino)ethyl methacrylate) brushes grafted on mesoporous silica nanoparticles Open
Poly(2‑(tert-butylamino)ethyl methacrylate) brushes (PTBAEMA) are grown from mesoporous silica nanoparticles via surface-initiated atom transfer radical polymerization (SI-ATRP). Linear PTBAEMA brushes are protonated and highly swollen at …