Shobhit K. Patel, Jaymit Surve, Vijay Katkar, Juveriya Parmar et al.
We have investigated graphene-based three various refractive index sensors (split ring resonator (SRR), split ring resonator with thin wire (SRRTW), and thin wire (TW) refractive index sensors) for the encoding and sensing-based applications. The sensors are designed to detect the presence of hemogl...
Md. Abu Kawsar, Md. Sahadat Hossain, Newaz Mohammed Bahadur, Samina Ahmed
] is remarkably similar to the hard tissue of the human body and the uses of this material in various fields in addition to the medical sector are increasing day by day. In this research, mustered oil, soybean oil, as well as coconut oil were employed as liquid media for synthesizing nanocrystalline...
Sk. Tanzir Mehedi, Adnan Anwar, Ziaur Rahman, Kawsar Ahmed
The Controller Area Network (CAN) bus works as an important protocol in the real-time In-Vehicle Network (IVN) systems for its simple, suitable, and robust architecture. The risk of IVN devices has still been insecure and vulnerable due to the complex data-intensive architectures which greatly incre...
Sayed Asaduzzaman, Kawsar Ahmed, Touhid Bhuiyan, Tanjila Farah
BACKGROUND: In this article, a hybrid photonic crystal fiber has been proposed for chemical sensing. A FEM has been applied for numerical investigation of some propagation characteristics of the PCF at a wider wavelength from 0.7 to 1.7 µm. The geometrical parameters altered to determine the optimiz...
Md. Rabiul Hasan, Sanjida Akter, Kawsar Ahmed, Derek Abbott
This letter presents a numerical investigation of a highly sensitive refractive index sensor based on surface plasmon resonance. An ultrathin niobium nanofilm is proposed as a new plasmonic material, which outperforms existing plasmonic materials. This nanofilm is employed on a photonic crystal fibe...
Bikash Kumar Paul, Kawsar Ahmed, Sayed Asaduzzaman, Md. Shadidul Islam
A micro structure folded cladding porous shaped with circular air hole photonic crystal fiber (FP-PCF) is proposed and numerically investigated in a broader wavelength range from 1.4 µm to 1.64 µm (E+S+C+L+U) for chemical sensing purposes. Employing finite element method (FEM) with anisotropic perfe...
Kawsar Ahmed, Monir Morshed
This paper presents an octagonal photonic crystal fiber (O-PCF) for liquid sensing, in which both core and cladding are microstructured. Some propagation characteristics of proposed structure have been investigated by using the full vectorial finite element method (FEM). Confinement loss and sensiti...
Vincent J. Kalkman, R. Babu, Matjaž Bedjanič, K. CONNIFF et al.
A checklist of the dragonflies and damselflies occurring in Bangladesh, Bhutan, India (including Andaman and Nicobar Islands), Nepal, Pakistan and Sri Lanka is presented. In total 588 (including 559 full species) taxa are known to occur in the region of which 251 taxa (species subspecies) are single...
I. S. Amiri, Bikash Kumar Paul, Kawsar Ahmed, Arafa H. Aly et al.
Abstract This article discusses the tri‐core photonic crystal microstructure fiber for the process of simultaneous sensing for salinity and temperature of water substances. This kind of microstructure is preferred in many sensing application to scale the detection process in micrometer range. In thi...
Md. Saiful Islam, Jakeya Sultana, Alex Dinovitser, Kawsar Ahmed et al.
Cyanide (CN) is a highly toxic chemical agent that is considered extremely harmful to humans. Considering the level of toxicity and harmfulness to human it is important to have an efficient and flexible detection method of CN. Based on this requirement, we propose a photonic crystal fiber (PCF) base...
Bikash Kumar Paul, Kawsar Ahmed, Vigneswaran Dhasarathan, Fahad Ahmed et al.
In this paper, a novel microstructure quasi-photonic crystal fiber design is proposed. Aimed at a high relative sensitivity, it is targeted for chemical sensing applications in the terahertz regime. A rigorous full-vector finite element method-based numerical investigation has been applied by employ...
Kawsar Ahmed, Sawrab Chowdhury, Bikash Kumar Paul, Md. Shadidul Islam et al.
In this paper, a novel polarization-maintaining single-mode photonic crystal fiber (PCF) has been suggested for terahertz (THz) transmission applications. The reported PCF has five layers of hexagonal cladding with two layers of porous core. The cladding and core territory of the PCF are constituted...
Elham Kazemi, Javaad Zargooshi, Marzieh Kaboudi, Parviz Heidari et al.
Erectile dysfunction (ED) can be caused by different diseases and controlled by several genetic networks. In this study, to identify the genes related to ED, the expression profiles of normal and ED samples were investigated by the Gene Expression Omnibus (GEO) database. Seventeen genes were identif...
Md. Mamun Ali, Kawsar Ahmed, Francis M. Bui, Bikash Kumar Paul et al.
Cervical cancer (CC) is the most common type of cancer in women and remains a significant cause of mortality, particularly in less developed countries, although it can be effectively treated if detected at an early stage. This study aimed to find efficient machine-learning-based classifying models t...
Saifuddin Mahmud, Md. Al-Mustanjid, Farzana Akter, Md Shazzadur Rahman et al.
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), better known as COVID-19, has become a current threat to humanity. The second wave of the SARS-CoV-2 virus has hit many countries, and the confirmed COVID-19 cases are quickly spreading. Therefore, the epidemic is still passing the te...