Processing and Carbon Nanotube Actions on Functional Behavior of Poly(3,4-Ethylenedioxythiophene): Poly (Styrene Sulfonate) Conductive Polymer S. Venkatesa Prabhu, Nagabhooshanam Nagarajan, Yogendra Thakur, Abhilasha Jadhav, Ramesh Kumar Chandrasekhar, Vijayalakshmi Govuru, Ramya Maranan, R. Srinivasan, S. Sathiyamurthy Journal of Applied Polymer Science, 2026 This research explored the integration of MWCNTs (multiwalled carbon nanotubes) as reinforcing agents to improve the optoelectrical properties of the Poly(3,4‐ethylenedioxythiophene):Poly(styrene sulfonate) thin film (PEDOT:PSS). This integration provided enhanced mechanical robustness and electrical conductivity, owing to MWCNT's high aspect ratio and superior conductive properties. Composite films incorporating MWCNTs at varying concentrations (0.5, 1, 3, and 5 wt%) were fabricated by spin coating followed by thermal annealing. The resulting devices underwent characterization to determine their electrical conductivity, pressure sensitivity, response time, mechanical flexibility, hysteresis, and structural properties. The incorporation of 3 wt% MWCNTs resulted in optimal performance, demonstrating a significant increase in sensitivity and electrical conductivity without compromising the device's flexibility. This composition's electrical conductivity was increased to 47 S/cm, with a pressure sensitivity of 0.57 kPa −1 and a response time of 80 ms, higher mechanical flexibility (25%), and a lower hysteresis ratio (3.9). The ultrasonication process leads to a more uniform MWCNT conformation as observed by SEM analysis, and edge cuts lead to partial density defects. Thus, the current study suggests a promising approach to modify PEDOT:PSS characteristics via MWCNT incorporation, facilitating the development of advanced, flexible pressure sensors.
Effect of nitride-fiber on functional characteristics of polymer composites Amarnath Mohana Krishnan, Nagabhooshanam Nagarajan, Yogendra Thakur, Abhilasha Jadhav, Chandrasekhar Ramesh Kumar, Guddati Vijaya Lakshmi, Ramya Maranan, Srinivasan Rajendran, Subbarayan Sathiyamurthy Journal of Polymer Engineering, 2026 Polymer matrix composites are prospective for automotive component applications, such as roof frames, cabinets, and seat frames, due to their lightweight, better tensile, and compression strength behaviour. However, the mono-fibre-reinforced polymer matrix exhibited variations in mechanical behaviour due to poor interfacial bonding strength. In this research, nano-boron nitride (BN) particles are introduced during the fabrication of low-density polyethene (LDPE) composites with 15 wt% chopped hemp fibre (chemically treated hemp fibre, or chemically treated HF) through the hot compression moulding technique. Influences of nitride-fiber actions on microstructural and mechanical properties of the synthesized composite were investigated, and X-ray diffraction analysis confirms the crystalline peaks. From transmission electron microscopy analysis, nitride fibres are identified as being widely dispersed within the base LDPE matrix, resulting in enhanced mechanical properties of the composites. The LDPE/15 wt% HF/9 wt% BN composite exhibits a high tensile strength of 25 MPa, an impact toughness of 6.1 J/mm 2 , and a flexural strength of 28 MPa, with a notable enhancement in microhardness value (44 HV). Moreover, lightweight, improved moisture absorption (0.82 %), and higher onset degradation temperature of 356 °C (Higher thermal stability). This composite sample is proposed for automotive roof applications.
Synthesis and characterization of SnO2 and V2O5 thin films for solar cell applications Prabakaran Natarajan, Chandralingam Rameshkumar, Karupaiyyan Subalakshmi Recent Innovations in Sciences and Humanities Highlights the State of Art Developments and Innovations Which Impacts Science and Engineering, 2025 SnO2 thin films doped with aluminium were effectively completed using the spin coating method under various deposition conditions. The synthesized films were investigated using various optical studies such as FTIR and UV. These studies are intended to verify whether the doping substance influences the optical characteristics of the thin films, specifically the generated energy band gap. We deduced from the results that the layer generated was more transparent at higher doping concentrations. Furthermore, the applied doping has an influence on optical characteristics of thin films, such as the band gap energy. A successful method to developing tin-doped vanadium oxide thin films is thermal evaporation. These films, containing varying weight percentages of SnO2 (3% and 6%), were placed on substrates made of glass. The deposited films were characterized using UV-Vis spectroscopy. All of the thin film’s amorphous properties were confirmed by X-ray diffraction (XRD). Using UV-V is spectroscopy, the film’s optical properties (absorption, transmission, and band gap) were examined in the 300–800 nm range.
Impact of COVID-19 pandemic on plastic surge and environmental effects Anderson Anderson, Rameshkumar Chandralingam, T R PraveenKumar Energy Sources Part A Recovery Utilization and Environmental Effects, 2025 Plastics have set an indispensable place in the daily needs of everyone's life in the society. It is because of its availability and affordability too. Since it is more economical and reaches everyone easily, all industries have started to produce their products in plastics ranges from small pin to big containers and pipes. This paper depicts the environmental effects of anthropogenic plastic consumption particularly during COVID-19 and other impacts due to plastic pollution. There is no industry that does not use plastic. The use of plastic in the medical industry is highly advantageous. Especially in this pandemic COVID-19 situations where one's self hygiene is the most important factor; the need of plastic is completely indisputable. The number of medical things used by even general has been increased rapidly because of the COVID-19. However, the improper management of medical tools and devices such as gloves, masks, and personal protection cover worsen the condition of the infection rate and overall plastic stagnation across the world. To minimize the negative consequence of mismanagement of plastic things, serious concern should be given to the management of plastic waste and public awareness has to be increased about the proper use and disposal.
Experimental Evaluation of Deep Learning Assisted Autism Spectrum Disorder Prediction Scheme using Convolutional Classification Principle Abhinav Kumar, Sonika Thapak, Jayendra Gopal Thatipudi, C. Rameshkumar, R. Krishnamoorthy, Divya Muralitharan Proceedings of the 5th International Conference on Data Intelligence and Cognitive Informatics Icdici 2024, 2024 Autism Spectrum Disorder (ASD) is characterized by challenges in social communication and restricted or repetitive behaviors. With rising ASD incidence, early diagnosis and intervention become increasingly crucial for improving developmental trajectories and quality of life. Traditional diagnostic methods are often subjective and limited. This study evaluates a deep learning-based approach for ASD prediction using Convolutional Neural Networks (CNNs) and Recurrent Neural Networks (RNNs). Leveraging the Autism Brain Imaging Data Exchange (ABIDE) dataset, which includes neuroimaging, genetic, and behavioral data, the model integrates spatial and temporal features to enhance prediction accuracy. The combined feature set yielded the highest accuracy of 93.7%, demonstrating the efficacy of integrating multiple data types. The proposed Convolutional Recurrent Hybrid (CRH) model achieved a superior accuracy of 98%, outperforming traditional models. This research highlights the potential of deep learning techniques in improving ASD diagnostics.
Characterisation of seed germination using nanaobubbled water C. Rameshkumar, S. Lakshmi Sankar, G. Senthilkumar International Journal of Ambient Energy, 2022 This paper particularises the generation of nanobubbles in distilled water using electrolysis process. Nanobubbles are those whose diameter is less than 200 nm. The size of the nanobubbles is quantified by using Atomic Force Microscope (A.F.M). This paper also specifies the germination of seeds with nanobubble water for seeds like Tulsi (Holy Basil), beans, surattense night shade and the growth rate is compared with seeds that are germinated with normal water. The comparison is made in terms of number of days the seed took to germinate from the soil, number of days it took for generation of first leaf and number of days it took for perfect branching. It also looks into the case where moss is formed due to over flooding of water for plants. However, mass formation was found to be very less when nanobubbled water was flooded during seed germination. Many property changes are seen in water due to the presence of nanobubbles. So properties like density, viscosity and thermal conductivity of nanobubbles water are studied and the results of these studies hold good harmony with the previous results.
Structural studies of ZnO: Al thin film synthesized by low cost spray pyrolysis for optoelectronic applications Journal of Surface Science and Technology, 2015
Optical and electrical properties of ZnO: Al thin films synthesized by low cost spray pyrolysis International Journal of Chemtech Research, 2014
