Current Nanoscience - Volume 19, Issue 1, 2023

Background: This article numerically examines the effect of buoyancy and Marangoni convection in a porous enclosure formed by two concentric cylinders filled with Ag-MgO water hybrid nanofluid. The inner wall of the cavity is maintained at a hot temperature, and the outer vertical wall is considered to be cold. The adiabatic condition is assumed for the other two boundaries. The effect of the magnetic field is considered in Read More

Background: The radiative magnetohydrodynamic (MHD) flow of an incompressible viscous electrically conducting hybrid nanofluid over an exponentially accelerated vertical surface under the influence of slip velocity in a rotating frame taking Hall and ion slip impacts is discussed. Methods: Water and ethylene glycol mixture have been considered as a base fluid. A steady homogeneous magnetic field is applied und Read More

Background: Superparamagnetic Iron Oxide Nanoparticles (SPIONs) were synthesized by the thermal decomposition method. Methods: In this work, the properties of the nanoparticles synthesized at different reaction times were investigated. Fourier Transformed Infrared Spectroscopy (FTIR) and thermal analysis were carried out to characterize oleate adsorbed on the surface of nanoparticles. Results: The oleate-coated surfaces Read More

Objective: A numerical and theoretical study is developed to analyze the combined effect of activation energy and chemical reaction in the flow of nanofluids due to the thin moving needle using the mathematical nanofluid model offered by Buongiorno. A passively controlled nanoparticle volume fraction boundary is assumed rather than actively controlled. Methods: A similarity transformation is utilized to convert the gove Read More

Aims: This article is intended to investigate and determine the combined impact of Slip and Hall current on Peristaltic transmission of Magneto-hydrodynamic (MHD) Eyring- Powell fluid. Background: The hall term arises, taking strong force-field under consideration. Velocity, thermal, and concentration slip conditions are applied. The energy equation is modeled by considering the Joule-thermal effect. To observe the non-N Read More

Background: Optical luminescence in a composite system with nematic LC 4- octyloxy-4’-cyanobuphenyl (8OCB) and semiconductor quantum dots CdSe/CdS and CdSe/CdS/ZnS has been synthesized by a water-organic method. Methods: Composites have been investigated by means of polarizing microscopy, dynamic light scattering, and measurements of dielectric properties in the frequency range from 20 Hz to 5 MHz. Read More

Background: The effect of bionanointeractions on graphene-biomolecule nanohybrids is of great interest, since external influences on their structural and surface properties can significantly affect their biological activity. Introduction: The effects of the fatty acid binding with shungite carbon (ShC) nanoparticles on the stability of aqueous dispersions of ShC and the oxidation state of ShC (oxygen-containing groups) wer Read More

Background: Thin films of a 5,10,15,20-tetraphenylporphyrin (H2TPP) and its metal complexes (MeTPP, where Me = Co, Cu, Zn, Fe-Cl) were obtained by vacuum thermal evaporation under quasi-equilibrium conditions (hot wall method) and by coating from a toluene solution on various substrates. It was shown that H2TPP, CuTPP and CoTPP have an ability to selforganization into linear structures during crystallization (na Read More

Background: Nanocarbon materials are known as highly sensitive gas sensors when compared to common solid-state sensors. This manuscript discusses graphene-based carbon films as materials for a gas sensor operating at near room temperature. Methods: The structural characteristics of graphene-based carbon films on In2O3- and ITO- coated substrates were studied by confocal laser microscopy, SEM, and Raman spe Read More

Food allergy is one of the world's most serious health problems, which needs new and safer approaches to resolve it. The rapid progress of nanotechnology to tackle the problem of food allergen has generated a new hope. Nanoparticles can be used as a unique system to detect allergens. Furthermore, nanotechnology offers allergen-delivery systems based on nanoparticles as potential adjuvants for allergen-spe Read More

Objectives: Platelet-, erythrocyte- and plasma-related products are vital for some patients. The main problems with these products are storage lesions, shelf life limitations, and function and quality maintenance. Dendrimers, a well-known group of polymeric nanoparticles, may help overcome these challenges due to their special properties. Methods: This review article, for the first time, comprehensively discusses st Read More

Background: At the end of December 2019, a case of pneumonia of unknown cause was reported in Wuhan, China. A new coronavirus was then identified as the leading cause of this controversial pneumonia, changing how people worldwide live. Although science has achieved significant advances in COVID-19 during the last two years, the world must do much more to prepare for the emergence and development of virus Read More

Background: The biosynthesis of zinc oxide nanoparticles (ZnO NPs) has received increasing attention in the field of nanotechnology due to their biomedical applications. With this aim, the present study was performed to synthesize biocompatible ZnO NPs using stems, leaves, and inflorescences extracts of the Tephrosia purpurea (T. purpurea) and Heliotropium indicum (H. indicum) medicinal plants. Objective: The Read More