Mohammad Lutful Hakim, Touhidul Alam, Ali F. Almutairi, Mohd Fais Mansor et al.
Polarization insensitive metamaterial absorbers (MA) are currently very attractive due to their unique absorption properties at different polarization angles. As a result, this type of absorber is widely used in sensing, imaging, energy harvesting, etc. This paper presents the design and characteriz...
Rezaul Azim, AKM Moinul H. Meaze, Adnan Affandi, Md. Mottahir Alam et al.
Abstract This paper presents a low-profile multi-slotted patch antenna for long term evolution (LTE) and fifth-generation (5G) communication applications. The studied antenna comprised of a stepped patch and a ground plane. To attain the required operating band, three slots have been inserted within...
Mohammad Kamruzzaman, Shahriar Wahid, Shamsuddin Shahid, Edris Alam et al.
Understanding spatiotemporal variability in precipitation and temperature and their future projections is critical for assessing environmental hazards and planning long-term mitigation and adaptation. In this study, 18 Global Climate Models (GCMs) from the most recent Coupled Model Intercomparison P...
Mohammad Lutful Hakim, Abu Hanif, Touhidul Alam, Mohammad Tariqul Islam et al.
This article presents numerical analysis of an ultrathin concentric hexagonal ring resonator (CHRR) metamaterial absorber (MMA) for ultrawideband visible and infrared optical window applications. The proposed MMA exhibits an absorption of above 90% from 380 to 2500 nm and an average absorbance of 96...
Mohammad Lutful Hakim, Touhidul Alam, Mohammad Tariqul Islam, Mohd Hafiz Baharuddin et al.
The development of metamaterial absorbers has become attractive for various fields of application, such as sensing, detectors, wireless communication, antenna design, emitters, spatial light modulators, etc. Multiband absorbers with polarization insensitivity have drawn significant attention in micr...
Touhidul Alam, Ali F. Almutairi, Md Samsuzzaman, Mengu Cho et al.
Abstract This research article presents a design and performance analysis of a metamaterial inspired ultra-high frequency (UHF) compact planar patch antenna for the CubeSat communication system that could be smoothly integrated with commercially available 2U Cube Satellite structure and onboard subs...
Md Moniruzzaman, Mohammad Tariqul Islam, Norbahiah Misran, Md Samsuzzaman et al.
Abstract An inductively tuned modified split-ring resonator-based metamaterial (MTM) is presented in this article that provides multiple resonances covering S, C, X, and Ku-bands. The MTM is designed on an FR-4 substrate with a thickness of 1.5 mm and an electrical dimension of 0.063λ × 0.063λ where...
Mohammad Ehsanul Kabir, Sílvia Serrao-Neumann, Peter Davey, Moazzem Hossain et al.
This paper examines the association between slow-onset natural hazards and the temporal aspects of human mobility— that is, short-term and long-term internal migration in the context of north-west Bangladesh. The paper contributes to the current understanding on the multiple stressors influencing in...
Mohammad Lutful Hakim, Touhidul Alam, Md. Shabiul Islam, M. Salaheldeen M. et al.
Metamaterial absorbers are very attractive due to their significant absorption behavior at optical wavelengths, which can be implemented for energy harvesting, plasmonic sensors, imaging, optical modulators, photovoltaic detectors, etc. This paper presents a numerical study of an ultra-wide-band dou...
Ahmad Musa, Mohammad Lutful Hakim, Touhidul Alam, Mohammad Tariqul Islam et al.
The visible and infrared wavelengths are the most frequently used electromagnetic (EM) waves in the frequency spectrum; able to penetrate the atmosphere and reach Earth’s surface. These wavelengths have attracted much attention in solar energy harvesting; thermography; and infrared imaging applicati...
Md. Uzzal Mia, Mahfuzur Rahman, Ahmed Elbeltagi, Md. Abdullah-Al-Mahbub et al.
Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a formula to zoom.
Mohammad Lutful Hakim, Mohammad Tariqul Islam, Touhidul Alam, Sharul Kamal Abdul Rahim et al.
This article proposes a square split-ring resonator (SSRR) metamaterial absorber (MMA) for sub-6 GHz application. The unit cell of the MMA was designed and fabricated on commercially available low-cost FR-4 substrate material with a dielectric constant o 4.3. The higher effective medium ratio (EMR) ...
H. M. Touhidul Islam, Abu Reza Md. Towfiqul Islam, Shamsuddin Shahid, G. M. Monirul Alam et al.
Abstract Appraisal of the long‐term precipitation trends and variability is crucial for sustainable water resources management. This research intended to evaluate Bangladesh's monthly, seasonal, and annual spatiotemporal rainfall variability using 40 global climate models for two representative conc...
H. M. Touhidul Islam, Mohammad Kamruzzaman, Shamsuddin Shahid, Mohammed Mainuddin et al.
Temperature rise is a concern for future agriculture in different regions of the globe. This study aimed to reveal the future changes and variabilities in minimum temperature (Tmin) and maximum temperature (Tmax) in the monthly, seasonal, and annual scale over Bangladesh using 40 General Circulation...
Rabeya Bosri, Abdur Razzak Uzzal, Abdullah Al Omar, A S M Touhidul Hasan et al.
The voting system is the process to take the opinion of people to run the constitution properly. Fairness, independence, and unbiasedness should be present in the voting system. Hence, it must be a transparent and secured process so that everybody can express their own opinion freely. Worldwide vote...
Nurnabi Sheikh, Abdur Razzaque Sarker, Marufa Sultana, Rashidul Alam Mahumud et al.
BACKGROUND: Financial risk protection and equity are two fundamental components of the global commitment to achieve Universal Health Coverage (UHC), which mandates health system reform based on population needs, disease incidence, and economic burden to ensure that everyone has access to health serv...
Sadia Sharmin, Md. Touhidul Islam, Md Anwar Sadat, Rayeda Jannat et al.
Indiscriminate use of pesticides in agricultural land poses a potential threat to many non-target organisms, including fish. In the present study, we explored the toxicological effects of sumithion on Nile tilapia (Oreochromis niloticus) after exposure at different concentrations (0.0, 1.5, 2.0, 2.5...
Mohammad Tariqul Islam, Md. Moniruzzaman, Touhidul Alam, Md Samsuzzaman et al.
Abstract In this paper, a meander-lines-based epsilon negative (ENG) metamaterial (MTM) with a high effective medium ratio (EMR) and near-zero refractive index (NZI) is designed and investigated for multiband microwave applications. The metamaterial unit cell is a modification of the conventional sq...
Md. Amanath Ullah, Touhidul Alam, Mohammed Shamsul Alam, Salehin Kibria et al.
Md. Mhedi Hasan, Mohammad Tariqul Islam, Touhidul Alam, Ahmed Alzamil et al.