The present report aims at the application of piezoelectric nanogenerators for non-destructive material discrimination. The detailed characteristics of zinc oxide (ZnO) nanosheet-based piezoelectric nanogenerator and its applications in mechanical energy harvesting and sensing are considered as major objectives of the present study. The nanogenerator is fabricated with ZnO nanosheet film prepared by hydrothermal method with necessary electrodes. The nanogenerator response as a function o...

The increasing food packaging waste is a severe concern for air, water, and soil pollution. In this research work, a triboelectric nanogenerator (TENG) is fabricated using waste food packaging Aluminium cover foils and laboratory parafilm for the first time. The device novelty lies in the selection of the materials; parafilm and food packing Aluminium cover foils. The proposed TENG produced an output voltage and instantaneous power density of∼4 Vand 11.8nWcm−2, respectively, by hand exci...

This present work reports the preparation and characterization of bamboo powder from bamboo fibers using a ball mill technique. The bamboo fiber powder is prepared with different ballmilling times of 3, 6, and 12 h. The morphology, crystallinity, functional groups, thermal analysis, absorbance, and photoluminescence of the obtained bamboo powders are analyzed.Morphological studies confirmed the decrement in the average particle size with an increase in ball milling duration. X-ray diffra...

In this report, Lawsonia inermis leaves extract is employed for the first time to synthesize Magnesium Oxide (MgO) nanoparticles (NPs) in a green approach. The green synthesis of MgO NPs with Lawsonia inermis leaves extract has extra benefits like eco-friendly, cost-effective, rapid synthesis, safer, and give natural stabilization and capping action. MgO NPs were also prepared by the chemical method for the comparative study of properties. Sodium hydroxide was used as a reducing agent, an...

Diabetes can be treated effectively by the nanoparticles (NPs), which have been converted into nanomedicine. The present study describes the synthesis of Zinc oxide nanoparticles (ZnO NPs) using Bambusa arundinacea (BA), their antidiabetic, antibacterial, and anticancer potential. Histopathological studies of synthesized ZnO NPs and BA extract were carried out on male Wistar rats. The Wistar rats were divided into normal, toxicant, standard, and test groups. It is observed that the ZnO NP...

Here, we report the simple and flexible nanogenerator based on ZnO nanosheet networks. ZnO nanosheets are synthesized by simple, cost-effective and single-step hydrothermal method on flexible conducting Aluminum substrates at a low growth temperature of 80 °C. Nanogenerator is fabricated using ZnO nanosheet networks as an active piezoelectric element with necessary electrodes. Fabricated nanogenerator tested under real-time mechanical forces such as finger tapping, muscle stretching, foot...

In the present report, for the first time aqueous extract of Curcuma longa powder is used for the synthesis of Copper nanoparticles (Cu NPs) using a simple and cost effective method. Morphology, size, crystallinity, composition and microstructure of the synthesized Cu Nps are studied. Size of the particles are in the range of 5–20 nm. In addition to the above, antibacterial activity of the obtained Cu NPs is tested for both gram-positive and gram-negative microorganisms. Zone of inhibitio...

Plastic materials have found in every aspect of our daily life and the accumulation of plastics in the environment has led to great threat to the planet. Therefore, need for development of biodegradable plastics is essential to replace the petroleum based plastics. In this report, Zinc oxide (ZnO) nanorods were grown on the bio-degradable poly(lactic) acid (PLA) substrates for the first time by using low-temperature solution growth method. Growth of nanorods was carried out on two types o...

The increasing accumulation of medical waste, especially discarded pharmaceutical blister packs, poses both environmental risks and missed opportunities for resource recovery. In this work, we demonstrate, for the first time, the direct upcycling of tablet blister waste into a potential frictional layer in triboelectric nanogenerators (TENGs). The polymer structure of blister packs, combined with Silicone rubber as a counter frictional layer, enabled the fabrication of durable TENG devic...

Transition metal dichalcogenides (TMDs), particularly vanadium tetrasulfide (VS4), have demonstrated potential for versatile applications in photochemical, electrochemical, energy harvesting, and energy storage applications over a period of time owing to their unique structural and redox properties. In this study, VS4 was integrated with nickel aluminium layered double hydroxide (LDH) at varying concentrations (2.5 wt%, 5 wt%, and 7.5 wt%) via a hydrothermal approach to enhance its capaci...

The increasing demand for sustainable energy solutions has spurred research into advanced energyharvesting technologies, with triboelectric nanogenerators (TENGs) emerging as a promising option for converting ambient mechanical energy into electrical power. The present study explores the potential of a novel composite material comprising nickel–aluminum layered double hydroxides (NiAl-LDH) and MXene (Ti3C2) to improve TENG performance. Integrating highly conductive, high-surface-area twod...

The detection and analysis of volatile biomarkers in exhaled breath have emerged as promising non-invasive strategies for early disease diagnosis, therapeutic monitoring, and personalized healthcare. Traditional gas sensing platforms, however, often face limitations including dependency on external power sources, bulky designs, and inadequate sensitivity or selectivity under physiological conditions. This work provides a complete overview of recent improvements in self-powered gas sensors...

This study uses a novel approach to synthesize copper nanoparticles (Cu NPs) using tartaric acid as a reducing and capping agent via a metal displacement method. The uniqueness of this approach lies in its clean and efficient synthesis route that enables the formation of metallic copper nanoparticles under mild conditions by employing tartaric acid as a dual-functioning complexing and capping agent, and utilizing a spontaneous metal displacement reaction with aluminum. The quality of the ...

Electronic waste (e-waste) and the use of portable electronic devices are rapidly increasing due to technological advancements globally, leading to harmful effects on the environment. E-waste causes severe environmental damage, such as the pollution of soil, water, and air. Therefore, there is an urge for effective e-waste management, recycling, and sustainable consumption. In this report, We developed high-performance triboelectric nanogenerators (TENGs) utilizing discarded laptop LCD ...

A novel, environmentally friendly, near-infrared (NIR) solar reflective yellow pigment has been successfully developed by incorporating bismuth (Bi3+) and vanadium (V5+) into the yttrium phosphate (YPO4) host lattice. Y(1􀀀 x)BixP(1􀀀 y)VyO4 (x = y = 0–1) materials with different composition were synthesized using two distinct approaches: the flux-assisted solid-state method (SSM) and the co-precipitation technique (CPS), and the results were compared. A drastic shift in the absorption cu...

Triboelectric nanogenerators (TENGs) have rapidly developed into a transformative energy harvesting technology, enabling self-powered, sustainable electronic systems. This review offers the first comprehensive, multidisciplinary perspective that connects the physics of triboelectric charge transfer with material innovation, device engineering, and real-world applications. We systematically categorize and measure the triboelectric series across a wide range of materials, including polymers...

Multilevel inverters are increasingly being used due to their superior performance compared to two-level inverters. Different circuit topologies on multilevel inverters have been extensively researched. Conduction and switching losses of IGBT in multilevel inverter is the key factor which could influence the converter reliability and efficiency. In this paper, thermal evaluation is described for four level Neutral Point Clamped inverter and four-level dual inverter fed open-end ...

In this paper a new optimization algorithm TLBO (Teaching and Learning Based Optimization) has been implemented to solve optimal multi Distributed Generator (DG) placement problem. This problem has been formulated for minimization of loss, capacity release of transmission lines and voltage profile improvement. To reduce search space and computational burden optimization has been done in two stages first to find the optimal locations for DG placement and latter to find the opti...

A four-level open-end winding induction motor (OEWIM) drive is known to suffer from two perennial problems. One is the problem of zero-sequence current in the motor phases, which is causedbytheexistence of zero sequence voltage in them. The other is the overcharging of the dc-link capacitor of the inverter operated with lower dc-link voltage by its counterpart operated with a higher dc-link voltage. This paper investigates the applicability of a special variant of space vector pulse w...