A5103259149- Electrochemical sensors and biosensors
- Photonic and Optical Devices
- MXene and MAX Phase Materials
- Semiconductor Lasers and Optical Devices
- Mechanical and Optical Resonators
- Advanced biosensing and bioanalysis techniques
- Advanced Chemical Sensor Technologies
- Phase-change materials and chalcogenides
- Chalcogenide Semiconductor Thin Films
- Heavy metals in environment
- Gas Sensing Nanomaterials and Sensors
- Adhesion, Friction, and Surface Interactions
- Analytical Chemistry and Sensors
- Nonlinear Optical Materials Studies
- Biosensors and Analytical Detection
- Photochemistry and Electron Transfer Studies
- Advanced Fiber Optic Sensors
- Laser Material Processing Techniques
- Luminescence and Fluorescent Materials
- Advanced MEMS and NEMS Technologies
- Thermography and Photoacoustic Techniques
- Supramolecular Self-Assembly in Materials
- Organic Light-Emitting Diodes Research
- Acoustic Wave Resonator Technologies
- Semiconductor Quantum Structures and Devices
King Saud University
2017-2024
University of Exeter
2022
Fine-tuning of the morphology from two-dimensional (2D) to three-dimensional (3D) nanostructures by structural engineering leads improved biosensing. Herein, a 3D assembly MXene and rGO nanosheets was synthesized hydrothermal process, then, naturally abundant promising biosensing catalyst Cu2O added coprecipitation method prepare ternary composite (MXene graphene aerogel–Cu2O composite). The prepared nanocomposite characterized X-ray diffraction, field emission scanning electron microscopy...
Copper/Cuprous oxide/Carbon nanoparticles decorated MXene composite was prepared and subsequently examined for its potential application as a non-enzymatic glucose sensor. To carry out this, initially the Cu MOF/MXene synthesised by hydrothermal method annealed in an unreacted environment at different time intervals. During this process, petal like MOF on loses organic ligands to form Cu/Cu
The objectives of the current study was to presence hazardous chemical elements (Ba138, Cd111, Cr52, Pb208, As75, Co59, Cu63, Mn55, Ni60, Se82, Sr88, Zn66 and Hg202) in low-cost children's toys, effect color types on element concentrations Children's toy samples were analyzed using microwave digestion inductively coupled plasma/mass spectrometry (ICP/MS) method. Samples prepared into small pieces, 500 mg homogenized sample used for by means digesting regents HNO3 (65 %, 5 mL) H2O2 (35 1 mL)....
The quantitative evaluation of bacterial populations is required in many studies, particularly the field microbiology. current techniques can be time-consuming and require a large volume samples trained laboratory personnel. In this regard, on-site, easy-to-use, direct detection are desirable. study, quartz tuning fork (QTF) was investigated for real-time E. coli different media, as well ability to determine state correlate QTF parameters concentration. QTFs that commercially available also...
Strain-engineered self-assembled GeSn/GeSiSn quantum dots in Ge matrix have been numerically investigated aiming to study their potentiality towards direct bandgap emission the mid-IR range. The use of GeSiSn alloy as surrounding media for GeSn (QD) allows adjusting strain around QD through variation Si and/or Sn composition. Accordingly, lattice mismatch between and layer has tuned - 2.3 4.5% barrier composition different dome-shaped sizes. obtained results show that wavelength, fulfilling...
In this work, we investigate the TD-DFT simulation, optical, and mirrorless laser properties of conjugated polymer (CP) Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-diphenylene-vinylene-2-methoxy-5-{2-ethylhexyloxy}-benzene)], also known as (PFO-co-PPV-MEHB) or ADS125GE. calculations were performed for three monomer units with truncated tails using time-dependent density functional theory (TD-DFT) calculations. The showed a highest occupied lowest unoccupied molecular orbital (HOMO-LUMO)...
Micromechanical sensors, in which the sensor response is created as a result of molecular interactions on sensors’ surfaces, have been employed powerful technique for rapid and sensitive detection low concentrations chemical biological materials. In study reported herein, poly(methyl methacrylate) (PMMA)-coated microcantilever (MCL) sensors were used to detect vapors volatile alcohols (methanol, ethanol, isopropanol) at three different concentrations. A vapor generator was generate flow...
The effects of the wetting layer thickness (tWL) on electronic properties direct band gap type-I strained dome shaped Ge(1−x)Snx quantum dot (QD) embedded in Ge matrix is numerically studied. emission wavelength and energy difference between S P electron levels have been evaluated as a function tWL for different QD size composition with constant height to diameter ratio. found be red shifted by increasing thickness, smaller being more sensitive variation tWL. Furthermore, minimum Sn required...
Fluid density and viscosity need to be determined in numerous industrial applications. Thus, new methods are required that measure fluid properties with minimum interference of extraneous factors. Herein, 150 pL different chemicals, namely, ethanol, 1-butanol, ethylene glycol, <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${n}$ </tex-math></inline-formula> -hexadecane, water, were injected into an...
Femto-second pump-probe and micro-Raman spectroscopy (RS) measurements have been made to identify optical phonons in Ge2Sb2Te5/InAs(111) an InAs(111) substrate. A theory of transient stimulated Raman scattering (TSRS) incorporating the tensor predicts which phonon modes may be observed reflectance (R) anisotropic (AR) measurements, how their amplitudes depend upon angles φ θ that describe orientation pump probe beam electric fields within sample plane. AR substrate revealed 6.5 THz T2...
Fine tuning of morphology from two dimensional (2D) to three (3D) by structural engineering leads an improved biosensing. Herein, a 3D assembly MXene and rGO was synthesized hydrothermal process, then naturally abundant promising biosensing catalyst Cu2O added co-precipitation method prepare ternary composite (MXene Graphene Aerogel-Cu2O composite), which formed as aerogel. The synthesis investigated varying the composition precursor Cu material aerogel with view preparing engineered for...