A simple dual-core D-shaped plasmonic refractive index (RI) sensor with an open-arch channel is introduced in this paper. thin gold layer inserted on the slotted portion, which makes cost effective. By introducing a ring flat surface of structure, coupling effect increased, enhances performance. The commonly used finite element method applied to characterize Numerical investigation under wavelength interrogation shows maximum spectral sensitivities 16,000 nm/RIU and 17,000 along...

A defected core decagonal photonic crystal fiber is designed and numerically optimized to obtain its residual chromatic dispersion compensation in the wavelength range of 1460 1675 nm i.e., over S+C+L+U bands having an average about −390 ps/(nm km) with a variation 7 km). The fiber, flattened profile, has four rings holes cladding region, which results low confinement loss small effective mode area at 1550 nm. For compensation, proposed can be used division multiplexing optical data...

In this study, numerical analysis on an Sn-based planner heterojunction perovskite device structure of Glass/ FTO/ ZnO/ CH3NH3SnI3/ CZTS/ Metal, with CH3NH3SnI3 as absorber layer, was performed by using the solar cell simulator SCAPS 1D. As electron transport layer (ETL) and a hole (HTL), inorganic materials ZnO CZTS (kesterite) were used. To optimize device, thickness absorber, electron, layers, defect density, doping concentrations varied, their impact performance evaluated. The effect...

The photovoltaic cells are the most ideal approaches to utilize solar spectrum by absorbing photons radiation. Perovskite materials have a remarkable role in (PV) technology. Recently material gained tremendous attention high performance for their application. Mixed halide perovskites possess unique property bandgap engineering, of which band gap can be varied from 1.51 eV 3.0 eV. absorption coefficient is mixed perovskite due its tunable range. tandem approach refined solution improve...

Solar photovoltaic technology is one of the most promising, economical and green technologies to harvest energy with least effect on environment. Crystalline silicon (c-Si), amorphous (a-Si), CIGS, CdTe/CdS etc., are dominating PV market. Operating temperature plays an important role in performance solar cells. A comparative investigation operating market available cells very choosing better high-temperature applications. In this study, performances different cell technologies, namely...

This paper focuses on the idea of cultivating a certain crop to District-Sub District-Union Bangladesh. The cluster and classification are done first basis soil features then comparing with common corps be cultivated, is being searched for. Here k-mean Clustering, Fuzzy c-Mean clustering SOM (Self-Organizing Map) based algorithms used. These analyzed according their results find better classification, by which one can most perfectly matched cultivable crops in area. big challenge this data...

Capacitive energy storage technology becomes more popular due to the fast charging facilities. Bismuth titanate (BIT) is a lead-free ferroelectric material used as dielectric medium in capacitive system. La and Nd co-doped BIT has been synthesized through solid-state reaction process obtain improved properties. Various characterization technologies such Fourier Transform Infrared (FTIR) X ray diffraction (XRD) have done sure completion absence of impurity phase BIT. Rietveld refinement XRD...

The agricultural sector plays an important role in Bangladesh that contributing 19.6 % to the national GDP and providing employment 63 of population. So, it is needed digitalize this make more productive effective. Therefore, essential monitor analyze real-time agriculture condition data for future improvement. In project, we have used different sensors such as temperature sensor humidity soil moisture pH ambient temperature, humidity, content level water respectively. Node MCU ESP8266...

The knowledge related to available high-quality sand deposits, Si manufacturing process and different challenging issues in is essential for developing the silicon industry Bangladesh, which addressed this article. For high-tech applications, primary element silica needs be 98% pure, at least. A case study Bangladesh shows that Bipinganj sand, with high quartz percentages, low moisture content, suitable industrial-grade production. No trace of Boron content has been found Shameshwari river...

Air is an essential element of the environment we live in. Unfortunately, this air polluted incessantly in many ways. With advancement technology, to make life easier, with full comfort, part being without any interruption. This constant pollution poses a significant threat ecosystem as well all living beings on planet. To planet suitable place for living, betterment nature, should be checked. create awareness, at first, it show current condition atmosphere, so that people will see extent...