Publications by authors named "Altaf Ur Rahman"

Glaucoma, a leading cause of blindness due to elevated intraocular pressure (IOP), is managed with medications like latanoprost (LAT), a prostaglandin analogue, to enhance aqueous outflow. Despite the challenge posed by eye anatomy and tear dynamics, effective ocular bioavailability via topical administration remains elusive. This study aims to optimize self-assembled nanomicelles incorporating LAT, an anti-glaucoma drug, belonging to BCS Class II (low solubility and high permeability) via a two-level, two-factor full factorial design, the nanomicelles were formulated via direct dissolution method and validated using design of expert.

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Correction for 'Exploring the properties of ZrCO/GaS van der Waals heterostructures for optoelectronic applications' by Altaf Ur Rahman , , 2024, https://doi.org/10.1039/D4CP02370F.

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We investigate the structural, electronic, and optical properties of eight possible ZrCO/GaS van der Waals (vdW) heterostructures using first-principles calculations based on a hybrid functional. These structures display favorable stability, indicated by matching crystal structures and negative formation energies. In all considered configurations, these heterostructures act as indirect band gap semiconductors with a type-II band alignment, allowing efficient electron-hole separation.

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In this study, we conducted first-principles calculations interfaced with Boltzmann transport theory to examine the carrier-dependent thermoelectric properties of CrS Te (: 0, 1, 2) dichalcogenides monolayers. We conducted a systematic analysis of the structural, phonon band structures, elastic properties, electronic structures, and thermoelectric properties, of electron (e) and hole (h) doped CrS Te (: 0, 1, 2) dichalcogenides monolayers. The studied 2D TMDCs exhibit structural stability, as indicated by the negative formation energy.

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Herein, we present a detailed comparative study of the structural, elastic, electronic, and magnetic properties of a series of new halide perovskite AgCrX (X: F, Cl, Br, I) crystal structures using density functional theory, mean-field theory (MFT), and quantum Monte Carlo (MC) simulations. As demonstrated by the negative formation energy and Born-Huang stability criteria, the suggested perovskite compounds show potential stability in the cubic crystal structure. The materials are ductile because the Pugh's ratio is greater than 1.

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Objectives: Glimepiride Orodispersable Tablets (ODT) were prepared with the goal to have rapid onset of action and higher bioavailability with ease administration to individuals with swallowing difficulty to ameliorate patient compliance.

Significance: Glimepiride is a contemporary hypoglycemic medication that belongs to the family of sulfonylurea derivatives. It is used in type 2 diabetes mellitus.

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Article Synopsis
  • The research focuses on KRuF and KOsF fluoride materials as new semiconductor options for renewable energy devices, exploring their properties using computational methods.
  • The study confirms that both materials are indirect semiconductors, with band gap values of 2.1 eV for KRuF and 1.7 eV for KOsF, indicating their potential for electronic applications.
  • Mechanical properties, including ductility and optical performance in the UV range, were analyzed, suggesting that both materials hold promise for future use in optoelectronic devices.
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Microneedles have recently emerged as a promising platform for delivering therapeutic agents by disrupting the skin, resulting in improved and high drug delivery via this route. Ibuprofen is widely used topically and orally for chronic pain conditions; to avoid untoward gastric effects, topical application is preferred over the oral route. This study aimed to enhance the solubility of the poorly water-soluble ibuprofen using Soluplus (SP) as a solubilizer and to fabricate dissolving microneedle patches of the drug.

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In the present era of advanced technology, the surge for suitable multifunctional materials capable of operating above 300 °C has increased for the utilization of high-temperature piezoelectric devices. For this purpose, a pseudo-tetragonal phased CaBiTi (NbFe)O:wt%MnO (CBTNF:Mn), with = 0-0.20, ceramic system has been engineered for the investigation of structural, ferroelectric, dielectric and high-temperature-dependent piezoelectric properties.

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Using first-principles calculations, the effects of Ybsubstitutional doping on structural, electronic, and optical properties of a series of perovskite compounds CsCa(: Cl, Br, I), have been investigated. We employed generalized gradient approximation (GGA) and HSE hybrid functional to study the electronic and optical properties. A series of pristine CsCa(: Cl, Br, I) is characterized as a non-magnetic insulator with indirect bandgap perovskite materials.

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Article Synopsis
  • Researchers explored how doping monolayer-GaS with nitrogen (N) or chromium (Cr) atoms affects its properties, revealing that the pristine structure is a non-magnetic semiconductor with an indirect bandgap.
  • Doping can change the material's bandgap and introduce magnetism, with N leading to p-type behavior and Cr enabling half-metallicity, potentially improving applications in nano-electronics and spintronics.
  • The study found that Cr favors a ferromagnetic state at low concentrations, while N prefers antiferromagnetic alignment; Cr clusters exhibit different magnetic interactions, suggesting the Cr-doped GaS is suitable for spintronic devices that function near room temperature.
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Every individual in his/her life experiences cervical pain at some stage which may restrict daily activities. Various approaches are available for the management of cervical pain, which include surgical, pharmacological and physical therapy. Different Manual therapy techniques are used for the treatment of neck pain.

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The structural, electronic, and magnetic properties of two-dimensional (2D) GaS are investigated using density functional theory (DFT). After confirming that the pristine 2D GaS is a non-magnetic, indirect band gap semiconductor, we consider N and F as substitutional dopants or adsorbed atoms. Except for N substituting for Ga (N), all considered cases are found to possess a magnetic moment.

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