Chettinad Academy of Research And Education (CARE) is a private and deemed university is located in Chennai. Established in 2005, it is a part of the Chettinad Group.
The accumulation of discarded plastics contributes significantly to white pollution and biomagnification, positioning biodegradable plastics as a promising alternative. Currently, bioplastics account for less than 1
Hard and soft ferrite nanocomposites have gained a lot of attention as they possess the properties of multifunctional ceramic materials with significant potential for electromagnetic applications. They also possess tremendous potential in high-frequency applications due to their combined magnetic and dielectric properties. This review critically examines the recent advances of barium hexaferrite, which is a hard ferrite, and cobalt-zinc ferrite, which is a soft ferrite, based on their structural design, synthesis strategies, and interfacial exchange-coupling mechanisms. The effects of compositional tuning, dopant incorporation and processing routes on phase growth, cation distribution, and microstructural characteristics are systematically analysed. Reported studies demonstrate improved magnetic properties (saturation magnetisation up to 65.9 emu/g and coercivity up to 6307 Oe) and improved microwave absorption performance (reflection loss up to 36.8 dB with a wide GHz bandwidth) compared to single-phase ferrites. These improvements are attributed to the synergistic interaction between the hard and soft phases, leading to optimised impedance matching and reduced dielectric losses. The review highlights current challenges in interfacial control and scalability and outlines future directions for designing high-performance ferrite nanocomposites for EMI shielding, radar absorption, and advanced communication technologies.
This research paper presents a comprehensive study of the development, fabrication, and analysis of a novel surfactant-based task-specific ionic liquid (TSIL, cetyltrimethylammoniumprolinate [CTA][Pro]), which possesses versatile abilities as a phase-transfer catalyst, ligand, and reducing agent. The IL [CTA][Pro] exhibited high activity and recyclability in the palladium-catalyzed Mizoroki–Heck (MH) cross-coupling reaction of various haloarenes with olefins to generate cross-coupling products with excellent yields, in the presence of palladium chloride under aqueous phosphine-free conditions. Notably, both palladium and [CTA][Pro] can be reused for up to 6 consecutive cycles without significant loss of catalytic performance, reflecting the principles of green chemistry and the potential of these recyclable components in sustainable synthetic methodologies.
In recent years, wearable antennas gain significant attention for use in healthcare applications, particularly in Implantable Medical Devices (IMDs) and Medical Body Area Networks. These antennas must be small, lightweight, and body-conforming to meet the needs of these applications. As the wearable antennas play a crucial role in Medical Body Area Networks (MBAN), facilitating continuous health monitoring. Their integration in IMDs requires minimizing electromagnetic interference and optimizing radiation characteristics. As healthcare systems demand more efficient and precise devices, the development of wearable antennas becomes essential for enhanced performance. The development of such antenna has gathered substantial awareness in recent years in the telemedicine industry. This study proposes a two-dimensional square loop-based antenna design, operating at 2.4 GHz with improved radiation properties and reduced backward radiation. The antenna dimensions are 60 × 40 × 0.7 mm3, making it compact and effective for body-worn applications. The antenna design process incorporates Machine Learning (ML) techniques to minimize simulation time, increase efficiency, and enhance design accuracy. ML algorithms optimize the antenna’s performance, particularly in terms of reflection coefficient, bandwidth, and gain. The proposed antenna design has tackled the issues faced by the conventional antenna and holds promise for real-time applications in healthcare, military, sports, and identification systems. It addresses critical challenges such as Specific Absorption Rate (SAR) and efficiency, ensuring optimal performance when interacting with human body tissues. Moreover, the experimental results demonstrate that the simulated and fabricated results exhibit similar deviations, confirming that the antenna is suitable for real-world applications.
Manganese oxide (MnO) and nickel-doped manganese oxide (Ni–MnO) nanoparticles were synthesized via a cost-effective sol–gel method and comprehensively characterized using FTIR, XRD, FESEM, and HRTEM analyses. XRD confirmed the crystalline structure and average crystallite size, while FESEM and HRTEM revealed the morphology and nanoscale dimensions, with particle sizes ranging from 18 to 25 nm. The synthesized nanoparticles were evaluated for their photocatalytic efficiency in the degradation of 2-methoxybenzaldehyde. Under optimized catalyst dosage and constant experimental parameters (pH, pollutant concentration, and reaction time), the Ni–MnO nanoparticles exhibited remarkable photocatalytic performance, achieving over 92
