Scopus Publications
- Utilization of Fully Transparent, Flexible, and Compact Modeled Low Voltage TFT for the Simulation of 2:4 and 3:8 Decoder Circuits
Mukuljeet Singh Mehrolia, Sapna Dixit, Dharmendra Kumar, Abhishek Kumar Singh, Sushma Kumari
3rd IEEE International Conference on Industrial Electronics Developments and Applications Icidea 2025, 2025
This article presents the implementation of 2:4 and 3:8 decoder circuits using a previously simulated, low-voltage, compact-modeled, fully transparent, and flexible a-IGZO (amorphous-Indium Gallium Zinc Oxide)-based TFT device. The outputs for both decoders, ranging from $\\mathbf{D}_{\\mathbf{0}}$ to $\\mathbf{D}_{\\mathbf{3}}$ for the 2:4 decoder and $\\mathbf{D}_{\\mathbf{0}}$ to $\\mathbf{D}_{\\mathbf{7}}$ for the 3:8 decoder, were verified, demonstrating excellent transient characteristics in all cases. The compact modeling and circuit simulations were performed using Silvaco Techmodeler and Silvaco Gateway tools. Compact modeling with the Silvaco Techmodeler tool achieved high accuracy, with minimal error (less than 1%) between the modeled and simulated data. These decoder circuits show promise for future applications in complex memory circuits, display drivers, and control systems. - Implementation of a 4:1 Multiplexer Using Compact Modeled Flexible and Low Voltage OTFT for Realizing it as a Universal Logic Gate
Mukuljeet Singh Mehrolia, Sapna Dixit, Dharmendra Kumar, Abhishek Kumar Singh, Sushma Kumari, Jogendra Singh Rana
3rd IEEE International Conference on Device Intelligence Computing and Communication Technologies Dicct 2025, 2025
The article discusses the utilization of a previously developed organic thin-film transistor (OTFT) with flexibility and bending characteristics for the realization of complex circuits, such as the 4:1 multiplexer. This 4:1 multiplexer function as a universal gate capable of implementing various basic logic gates, including AND, OR, XOR, and XNOR. Silvaco TechModeler and Silvaco Gateway tools are employed for the compact modeling of the fabricated device and the implementation of the 4:1 multiplexer, respectively. The device operates at 1 V and demonstrates favorable performance parameters. Logic gates implemented using the 4:1 multiplexer exhibit favorable transient characteristics for all four possible logic inputs (00, 01, 10, and 11). The Silvaco TechModeler tool achieves compact modeling with approximately 100% accuracy (with an error of less than 1%) between experimental and modeled data. This solution-processed, cost-efficient, and compactly modeled device can be further utilized to realize various complex analog and digital circuits, as well as applications in medical sensing and wearable electronics. Furthermore, the 4:1 multiplexer circuit is expected to be used in the development of higher-order multiplexer circuits, ALU circuits, and other complex systems. - The efficient thermal processing of cylindrical multiphase meat: A study on the selection of microwave heating strategy
Sushma Kumari, Sujoy Kumar Samanta
International Journal of Food Engineering, 2022
The two-dimensional cylindrically shaped multiphase meat sample was modelled for microwave processing for two different interaction techniques i.e., lateral and radial during mono-mode operation of waveguide. The study was aimed to analyze the effect of volume fraction and sample size along with the duration of the procedure on the heat distribution corresponding to specified frequency and intensity of microwave. Procedure exhibiting higher heating rate and lower thermal non-homogeneity was set as the deciding factor for an optimal heating scheme. In order to achieve optimal processing at both 915 and 2450 MHz frequency, rotation of smaller samples and non-rotation of larger samples were recommended in most of the case studies; however, few exceptions were also observed and reported. In addition, reciprocity between volume fraction, intensity of the microwave radiation and procedure duration was also discussed. Overall, the present study would guide the studies on the microwave processing of two-dimensional multiphase meat. - The Effect of Temperature and Additives on the Dielectric Behavior of Human Whole Blood, Its Different Components, and Cell Suspensions
Sushma Kumari, Sujoy Kumar Samanta
IEEE Transactions on Instrumentation and Measurement, 2022
This investigation involves the study of electrical properties, i.e., conductivity and permittivity of human whole blood and its different components with/without various additives at different temperatures. The open-ended coaxial probe measurement technique was employed to perform the study for the frequency range of 0.3–6.5 GHz. The dielectric behaviors of the freshly received whole blood from five different donors with different anticoagulants and clotting gel were studied at temperatures ranging from 5 °C to 45 °C. The differences in the dielectric behaviors of the whole blood, its different components [packed red blood cells (RBCs), plasma, and serum], and RBC suspensions were also analyzed. The plain whole blood and the whole blood samples incorporated with the clotting gel exhibited lower dielectric behaviors compared to those with the whole blood samples incorporated with the anticoagulants. The analysis of the whole blood, its different components, and RBC suspensions inferred that the packed RBCs exhibited the lowest dielectric constant, loss, and conductivity, and these values were increased for the whole blood followed by serum, plasma, and RBC suspensions, respectively. The dielectric behaviors of the whole blood and its components were observed to be significantly affected by the presence of different additives and also due to the variation in frequencies and temperatures. The modified Debye relaxation model included with the static conductivity term was fitted to the measured permittivity. The dielectric responses of biological samples are very useful and paramount for understanding the specific absorption rate (SAR) and other thermal and nonthermal effects of the radiation. - A TWO-DIMENSIONAL STUDY TO AID THE PROTOTYPE DESIGNING OF MONO-MODE MICROWAVE BLOOD WARMER
Sushma Kumari, Sujoy Kumar Samanta
Chemical and Process Engineering Inzynieria Chemiczna I Procesowa, 2022
This meticulous analysis was performed to guide in the designing of a prototype mono-mode microwave blood warmer.The interaction of two-dimensional cylindrical blood samples with the microwave was performed through two different techniques i.e., lateral and radial irradiations.The study found the preference for interaction techniques corresponding to different frequencies, intensities, sample sizes and procedure durations.The study of the areal positioning of power and temperature at specific peak points generated the information on warming rate and thermal homogeneity inside the sample.High warming rate along with low thermal non-homogeneity were the chosen criteria to decide the requirement of rotation during the warming procedure.At the frequency of 915 MHz, no rotation was recommended for samples irrespective of sizes for optimal warming.Rotation for small and large samples and no rotation for medium sized samples were recommended to achieve homogenously warmed human blood samples at the frequency of 2450 MHz.Specific recommendations for different case studies were also made with respect to the sample size, radiation intensity and procedure duration to draw reciprocity amongst them.Considering all the aspects, the present work recommended an efficient way for designing of a prototype for enhanced microwave facilitated intravenous fluid warmer. - The evolution of microwave assisted thermal processing of pre-transfusion human blood: A review
Sushma Kumari, Sujoy Kumar Samanta
Materials Today Proceedings, 2022 - Microwave synthesized strontium hexaferrite 2D sheets as versatile and efficient microwave catalysts for degradation of organic dyes and antibiotics
Sandhya Mishra, Sushma Kumari, Prashant Kumar, Sujoy Kumar Samanta
Science of the Total Environment, 2021 - 1D study on microwave assisted warming of human blood with varied ceramic and composite supports
Journal of the Indian Chemical Society, 2020 - Theoretical analysis on efficient microwave warming of human blood
Sushma Kumari, Sujoy Kumar Samanta, Brij Saxena
Ampere 2019 17th International Conference on Microwave and High Frequency Heating, 2019
Economical and efficient warming of pre-transfusion human blood has been a subject of extensive investigation. The objective of this study is to identify and analyze the effect of enhanced microwave warming of bank blood. The sample here has been assumed to be a 2D cylinder interacting with microwave irradiation. The mathematical interpretation for the study is performed by solving the equation of electromagnetic wave propagation along with the equation of energy balance and pertinent boundary conditions. The samples after being subjected to both lateral and radial irradiations of same intensity are investigated for the power absorption in the sample with respect to the sample size. The preliminary observations obtained are further analyzed and extended for spatial distribution scrutiny. The collaborative analysis of the spatial distributions of temperature and power in the human blood along with high heating rate and low thermal non-uniformity determine the optimal heating strategy. The observations at different sample sizes recommend radial irradiation as the optimal heating strategy for samples corresponding to OP: 1 and 3, and lateral irradiation for samples corresponding to OP: 2, respectively. Considering all the aspects, the present work recommends an efficient way for enhanced microwave assisted heating of body fluid samples (2D cylindrical geometry) with known or measurable dielectric properties. - Enhanced microwave assisted processing of 2D cylindrical porous food dielectric
Sushma Kumari, Sujoy Kumar Samanta, Kush Patel
Ampere 2019 17th International Conference on Microwave and High Frequency Heating, 2019
The exigencies of a swift, qualitative and economical procedure for the food industry was addressed by the microwave assisted processing such as heating, drying, thawing, etc1. A food material in itself is a complex sample with multiple components and varying dielectric properties which makes its mathematical modeling arduous. The most realistic approach is to consider the food as a porous dielectric which basically consists of a continuous phase and one or more dispersed phases2. The porous dielectrics considered for this study is meat as the continuous phase and oil, water or air as dispersed phase. A theoretical analysis has been performed to study the thermal effects on the 2D cylindrical porous food dielectrics subjected to microwave irradiation. The analysis comprises of different porosity conditions (Φ = 0.1, 0.25 and 0.4), different initial intensities (I0 = 1 and 1.5 Wcm-2) and different dispersed phases. Galerkin finite element analysis has been used to solve electric field and energy balance equations with suitable boundary conditions.
