Abstract Aluminum nitride (AlN), a versatile ceramic with high thermal conductivity, electrical resistivity, and coefficient of expansion compatible silicon, is well‐suited for direct‐to‐chip cooling applications electronics, implementation in wide bandgap semiconductors, high‐temperature heat exchangers. Despite multiple advantages, AlN's liquid‐cooling often hindered by surface‐degrading effects working‐fluid‐induced hydrolysis. Herein, scalable ‐but highly tunable‐ wettability engineering...

Respiratory droplets-which may contain disease spreading virus-exhaled during speaking, coughing, or sneezing are one of the significant causes for spread ongoing COVID-19 pandemic. The droplet dispersion depends on surrounding air velocity, ambient temperature, and relative humidity. In a confined space like an elevator, risk transmission becomes higher when there is infected person inside elevator with other individuals. this work, numerical investigation carried out in three-dimensional...

Efficient particle sorting in microfluidic systems is vital for advancements biomedical diagnostics and industrial applications. This study numerically investigates migration passive symmetric serpentine microchannels, leveraging inertial centrifugal forces label-free, high-throughput separation. Using a two-dimensional numerical model, dynamics were analyzed across varying flow rates, diameter ratios (1.2, 1.5, 2), channel configurations. The optimized geometry achieved separation...

The degradation of the hemiwicking property superhydrophilic high-energy surfaces due to contaminant adsorption from ambient atmosphere is well-documented. This compromises performance such surfaces, thus affecting their efficacy in real-world applications where critical. In this work, role surface micro- and nanostructure morphology laser-textured metallic on superhydrophilicity studied. We explore intrinsic contact angle variations via organics surroundings, which brings about associated...

This study presents a method for enhancing the adhesion of chemically synthesized polyaniline on steel substrates without need binding agent. Hydrochloric acid (HCl) was used in synthesis polyaniline. The experiment details situ chemical and its application as coating surfaces using an air spray technique. Pre-surface treatment, including cleaning sanding, performed prior to coating. Following coating, heat treatment applied, where heated 350 °F 3 h after it fully dried. properties were...

The education sector has suffered a catastrophic setback due to the ongoing COVID pandemic, with classrooms being closed indefinitely. current study aims solve existing dilemma by examining transmission inside classroom and providing long-term sustainable solutions. In this work, standard 5 × 3 m3 is considered where 24 students are seated, accompanied teacher. A computational fluid dynamics simulation based on OpenFOAM performed using Eulerian–Lagrangian framework. Based stochastic...

A numerical analysis using OpenFOAM has been performed in this work to investigate the infection risk due droplet dispersal an enclosed environment resembling elevator, since such confined places is very high. The effect of two scenarios on dispersal, namely, quiescent and fan-driven ventilation, both subjected various climatic conditions (of temperature humidity) ranging from cold–humid (15 °C, 70% relative hot–dry (30 30% have studied. factor derived a dose–response model constructed upon...

Efficient thermal management in high-power electronics cooling can be achieved using phase-change heat transfer devices, such as vapor chambers. Traditional chambers use wicks to transport condensate for efficient exchange and prevent "dry-out" of the evaporator. However, present significant design challenges arising out large pressure drops across wicking material, which slows down rates increases chances dry-out. Thicker add overall resistance, while deterring development thinner devices...

The ever-increasing need for power consumption in electronic devices, coupled with the requirement thinner size, calls development of efficient heat spreading components. Vapor chambers (VCs), because their ability to effectively spread over a large area by two-phase transfer, seem ideal such applications. However, creating thin and vapor that work wide range inputs is persisting challenge. VCs use wicks circulating phase changing media, suffer from capillary restrictions, dry-out, clogging,...

Condensation is ubiquitous in a wide variety of industrial applications ranging from heating, ventilation and air conditioning (HVAC), to harvesting water the atmosphere thermal management many devices. Dropwise (DwC) filmwise (FwC) condensation are two primary modes condensation, their dominance governed by wettability cooled surface. In DwC, condensate forms droplets, which eventually coalesce with each other leave surface gravity (if inclined). FwC, film liquid formed on From well-known...

Transport of salt through the wall porous microtube is relevant in various physiological microcirculation systems. phenomena based modeling such system undertaken present study considering a combined driving force consisting pressure gradient and external electric field. modeled two domains, flow conduit pores microtube. The solute transport presented by convective-diffusive mass balance it solved using integral method under framework boundary layer analysis. considered to be series straight...

Background: Pollen calendars and allergic pollen studies are crucial in understanding the timing distribution of a specific region. By studying allergenic pollen, researchers can identify peak periods regions, develop targeted treatment strategies enhanced public awareness education. Methods: sampling is done using traps or collectors, data analyzed to create calendar showing periods. Results: To identity duration release, helping allergy sufferers, healthcare professionals. Discussion: aero...

Article Conductometric Studies on the Dissociation Constants of Benzoic Acid in 2-Propanol + Water Mixtures was published January 1, 1987 journal Zeitschrift für Physikalische Chemie (volume 268O, issue 1).