Mohammad Al Mahfuz, Md. Anwar Hossain, Emranul Haque, Nguyen Hoang Hai et al.
In this paper, a dual-core photonic crystal fiber (DC-PCF) based surface plasmon resonance (SPR) bio-compatible sensor is proposed for various bio-organic molecules and biochemical analytes refractive index (RI) detection in the visible to near-infrared region (0.5 to 2 μm). Two hexagonal ring latti...
Emranul Haque, Subaha Mahmuda, Md. Anwar Hossain, Nguyen Hoang Hai et al.
A highly sensitive surface plasmon resonance (SPR) sensor on a dual-core photonic crystal fiber (PCF) for low refractive index (RI) detection is presented in this paper. Plasmonic material silver (Ag) is deposited outside of the fiber structure to detect changes of the surrounding medium's refractiv...
Mohammad Al Mahfuz, Md. Anwar Hossain, Emranul Haque, Nguyen Hoang Hai et al.
In this paper, a low-loss, spiral lattice photonic crystal fiber (PCF)-based plasmonic biosensor is proposed for its application in detecting various biomolecules (i.e., sugar, protein, DNA, and mRNA) and biochemicals (i.e., serum and urine). Plasmonic material gold (Au) is employed externally to ef...
Alok Kumar Paul, Md. Samiul Habib, Nguyen Hoang Hai, S. M. Abdur Razzak
Most surface plasmon resonance (SPR) based photonic crystal fiber (PCF) sensors have been designed to detect the analyte refractive index (RI) ranging from 1.33 to 1.41. In this paper, we propose a new approach to extend the detection range of the sensor, and it can be fabricated with the existing f...
Emranul Haque, Abdullah Al Noman, Md. Anwar Hossain, Nguyen Hoang Hai et al.
In this paper, an extremely sensitive Photonic Crystal Fiber (PCF) based Surface Plasmon Resonance (SPR) sensor having D-shaped structure has been proposed. Gold has been used as the plasmonic material, and it has been coated outside of the fiber on its glassy surface to detect the change in the ref...
Nguyen Tien Huy, R Matthew Chico, Vuong Thanh Huan, Hosam Shaikhkhalil et al.
BACKGROUND: Since the COVID-19 pandemic began, there have been concerns related to the preparedness of healthcare workers (HCWs). This study aimed to describe the level of awareness and preparedness of hospital HCWs at the time of the first wave. METHODS: This multinational, multicenter, cross-secti...
Abdullah Al Noman, Emranul Haque, Md. Anwar Hossain, Nguyen Hoang Hai et al.
In this work, a highly sensitive dual-core configured microchannel-based plasmonic refractive index (RI) sensor was investigated, which can be used for low RI detection. Both the sensing layer and the plasmonic material layer were built outside of the fiber design to detect the surrounding medium’s ...
Md. Saiful Islam, Duong Thi Hanh, Fakhri Alam Khan, M. A. Hakim et al.
Jannatul Mawa Nijhum, Tanvir Ahmed, Md. Anwar Hossain, Javid Atai et al.
An improved design of a D-shaped photonic crystal fiber (PCF)-based refractive index (RI) sensor is proposed that uses the surface plasmon resonance phenomenon. The sensor consists of a large semicircular open channel that is inserted at the upside of the D-shaped PCF. A thin plasmonic sensing layer...
Md. Shahjalal Hossain, S. M. Abdur Razzak, Christos Markos, Nguyen Hoang Hai et al.
In this paper, we present and compare two experimentally feasible photonic crystal fiber (PCF) designs (Type-Iand Type-II) which ensure near-zero flattened dispersion with ultra-high phase and group birefringence at THz frequencies. Both structures are based on a subset of a triangular array of circ...
Wahiduzzaman Emon, Ahmed Afif Rafsan, Md Faysal Nayan, Russel Reza Mahmud et al.
Le Huu Nhat Minh, Gehad Mohamed Tawfik, Sherief Ghozy, Mohammad Rashidul Hashan et al.
BACKGROUND: Breastfeeding is beneficial to both mother and infant. However, overlap of lactation with pregnancy and short recuperative intervals may impact mothers nutritionally. We aimed to investigate the possible effects of pregnancy during breastfeeding. METHODS: In October 2018, we searched sys...
Khaleda Akhter Sathi, Md. Azad Hossain, Md. Kamal Hosain, Nguyen Hoang Hai et al.
This article proposes a deep neural network (DNN) model to predict the electric field induced by a transcranial magnetic stimulation (TMS) coil under high-amplitude and low-frequency current pulse conditions. The DNN model is comprised of an input layer with 6 neurons, three non-linear hidden layers...
Abu Hena Murshed, Md. Azad Hossain, Khac Kiem Nguyen, Nguyen Hoang Hai et al.
This article proposes a hybrid array antenna where a cavity-backed antenna is used jointly with a patch antenna using half-mode substrate integrated waveguide technology (HMSIW) to reduce antenna size. This hybrid structure consists of a flexible Rogers RO4003C substrate ( <inline-formula xmlns:mml=...
Md. Rezwan Ahmed, Md. Samiul Habib, Nguyen Hoang Hai, Oishi Jyoti et al.
We present a tunable terahertz metamaterial absorber featuring a fabrication-convenient structure that combines a vanadium dioxide (VO<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub>) square patch and a graphene loop for multifunctional operation...
Hai Thanh Nguyen, Siyuan Wu, Tomoki Ootawa, Hieu Chi Nguyen et al.
Processing with heat treatment has been reported to alter several therapeutic effects of turmeric. In Vietnamese traditional medicine, turmeric has been long used for bacterial infections, and roasting techniques are sometimes applied with this material. However, there have been no studies investiga...
Emranul Haque, Md. Anwar Hossain, Thai Son Pham, Yoshinori Namihira et al.
A D-shaped photonic crystal fiber (PCF) based plasmonic sensor for detection of a wider range of low refractive indexes operating at near to mid-infrared wavelengths is presented in this paper. Using finite element method (FEM) on the basis of y-polarized transverse electric (TE) mode TEy, wavelengt...
Abu Hena Murshed, Md. Azad Hossain, Khac Kiem Nguyen, Nguyen Hoang Hai et al.
This paper proposes a novel scheme for developing a linearly polarized (LP) hybrid antenna using a simple integration of a planner cavity-backed antenna with a conventional rectangular patch antenna. To substantiate, a half-mode rectangular substrate-integrated waveguide technique is divided into ha...
Nguyen Hoang Minh Thuan, Dang Bac Hai
A key concern when constructing sustainable development policy is reducing the negative impact on environmental systems and maximizing human welfare. In this study, we assess how energy consumption effected on Carbon intensity of human well-being (CIWB). Using two-way fixed effects in panel regressi...
S. M. Abdur Razzak, Yoshinori Namihira, M. A. G. Khan, Md. Shamim Anower et al.
This paper presents the chromatic dispersion, effective area and confinement loss in circular ring photonic crystal fibers (CPCFs) in comparison to the octagonal PCFs (OPCFs). The finite difference method (FDM) with perfectly matched boundary layers (PML) is used to analyze the dispersion and leakag...