Md. Mustafizur Rahman, Ajay Krishno Sarkar, Md. Amzad Hossain, Md. Selim Hossain et al.
Assessment of the cognitive functions and state of clinical subjects is an important aspect of e-health care delivery, and in the development of novel human-machine interfaces. A subject can display a range of emotions that significantly influence cognition, and emotion classification through the an...
Alok Kumar Paul, Ajay Krishno Sarkar, Abu Bakar Siddiqur Rahman, Abdul Khaleque
This paper presents a highly sensitive plasmonic refractive index (RI) sensor on a dual-core photonic crystal fiber (PCF). The performance of the RI sensor is weighed in terms of amplitude sensitivity, wavelength sensitivity, wavelength resolution, and linearity of the resonance wavelength. Numerica...
Senjuti Rahman, Mehedi Hasan, Ajay Krishno Sarkar
The brain is the human body's primary upper organ. Stroke is a medical disorder in which the blood arteries in the brain are ruptured, causing damage to the brain. When the supply of blood and other nutrients to the brain is interrupted, symptoms might develop. Stroke is considered as medical urgent...
Md. Simul Hasan Talukder, Ajay Krishno Sarkar
Rice is one of the most extensively cultivated food crops on the planet, especially in Bangladesh, China, and India. However, rice production is frequently hampered by nutrient imbalances. The leaves of rice plants often show signs of nutritional shortages. As a result, rice leaf color and shape can...
Alok Kumar Paul, Ajay Krishno Sarkar, Abdul Khaleque
A numerical analysis on dual core photonic crystal fiber (DC-PCF) based surface plasmon resonance (SPR) refractive index sensor is presented. The guiding parameters and required sensing performances are examined with finite element method (FEM) based software under MATLAB environment. According to s...
Belal Hossain, Alok Kumar Paul, Md. Arefin Islam, Md. Mahabubur Rahman et al.
Senjuti Rahman, Mehedi Hasan, Ajay Krishno Sarkar, Fayez Khan
Parkinson's disease (PD) is a chronic neurological condition that is growing in prevalence and manifests both motor and non-motor symptoms. Most PD patients have trouble speaking, writing, and walking during the early stages of the disease. Analysis of speech problems has been effective in identifyi...
Subarto Kumar Ghosh, Tushar Kanti Roy, M. A. H. Pramanik, Ajay Krishno Sarkar et al.
In this work, a control strategy is developed for different components in DC microgrids where set points for all controllers are determined from an energy management system (EMS). The proposed EMS-based control scheme is developed for DC microgrids with solar photovoltaic (PV) systems as the primary...
Alok Kumar Paul, Ajay Krishno Sarkar, S. M. Abdur Razzak
This paper presents a graphene coated photonic crystal fiber (PCF) biosensor based on surface plasmon resonance (SPR). A full-vectorial finite element method (FEM) with perfectly matched boundary is used as mode solver to investigate the performance of the proposed biosensor. In the proposed SPR bas...
Md. Arefin Islam, Alok Kumar Paul, Belal Hossain, Ajay Krishno Sarkar et al.
In this paper, we numerically debrief an ultra-high sensitive surface plasmon resonance (SPR) biosensor utilizing thin layers of graphene oxide (GO) that have not been addressed adequately till now. By the deposition of GO on top of the metal-dielectric heterostructure, our proposed sensor can achie...
Ariful Islam, Ajay Krishno Sarkar, Tonmoy Ghosh
This paper on electroencephalogram (EEG) analysis describes a feature extraction model based on discrete wavelet transforms for the classification of EEG signals during a mental arithmetic task as mental stress. Stress is a normal part of life. Stress analysis is more important than sleep analysis b...
Pejush Chandra Sarker, Md. Masud Rana, Ajay Krishno Sarkar
M. M. Rashid, Ashiqur Rahman, Liton Chandra Paul, Jarin Rafa et al.
This paper presents localization of tumor at 13 different positions deep inside a dense human breast using only 4 meander line microstrip patch antennas of operating frequency 1.5 GHz for the detection of breast cancer. The reflection coefficients of the antennas demonstrates a very uniform pattern ...
Liton Chandra Paul, Ajay Krishno Sarkar, Md. Ashraful Haque, Palash Miah et al.
The aim of this paper is to investigate the dependency of antenna performance parameters of an inset feed rectangular microstrip patch antenna (RMPA) with the variation of notch width at 2.4 GHz. Various antenna performance parameters like return loss, radiation pattern, center operating frequency, ...
M. M. Rahman, Ajay Krishno Sarkar
This paper presents the method for calculating the resonant frequency of Meander Line Dipole Antenna (MLDA) in the UHF frequency range. Two types of meander line antennas have been designed for passive RFID tag antennas. The design, analysis and characterization of the two proposed antennas are perf...