Photonic crystal sensors exploit deliberately engineered periodic dielectric structures to control the propagation, confinement, and spectral response of light. Their sensing capability arises from the strong dependence of photonic modes on changes in refractive index, absorption, geometry, surface loading, temperature, strain, or other environmental variables. By concentrating electromagnetic energy within carefully selected regions, photonic crystal […]
Introduction The optical spectrum of a photonic device is the measurable consequence of a complex interaction among geometry, material dispersion, electromagnetic boundary conditions, excitation state, fabrication variability, and environmental conditions. Whether the device is a wavelength-selective filter, metasurface, photonic crystal cavity, grating coupler, resonator, optical sensor, or nonlinear waveguide, its functional behavior is often summarized […]
Publishing in a Scopus-indexed journal is often treated as an important milestone in an academic or research career. Scopus indexing is widely used by universities, funding agencies, research institutions, and evaluation committees as an indicator that a journal has passed defined standards related to editorial governance, peer review, publication regularity, academic relevance, and citation visibility. […]
In academic publishing, the labels Q1 and Q2 describe a journal’s relative position within a defined subject category. The letter “Q” stands for quartile, meaning that journals are ranked according to a selected bibliometric indicator and then divided into four approximately equal groups. Q1 contains the highest-ranked group, Q2 contains the next-highest group, Q3 contains […]
Scientific research ethics concerns the principles, institutions, and professional practices that determine how knowledge should be produced, validated, communicated, and used without harming people, animals, communities, ecosystems, or the credibility of science itself. The phrase is often treated as a narrow compliance category, associated with institutional review boards, consent forms, animal care protocols, or misconduct […]
Publishing a simulation-based study in a Q1 journal is not simply a matter of running sophisticated software, producing attractive contour plots, or reporting a small improvement over an existing model. A strong paper must present a meaningful research question, a defensible simulation design, convincing verification and validation, transparent uncertainty analysis, and a clear scientific contribution. […]
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Choosing a good engineering project is often more difficult than completing the simulation itself. A topic may sound advanced, but it may not provide enough measurable results, comparison opportunities or research scope. On the other hand, an overly complex project may require hardware, expensive datasets or technical knowledge that is difficult to acquire within a […]
Introduction Photonic crystal fiber (PCF)-based gas cells have emerged as an indispensable component in optical gas sensing, particularly in Raman and absorption-based techniques. These gas cells offer significant improvements over traditional sensing architectures by enhancing light-gas interaction length, enabling miniaturization, and offering higher sensitivity and selectivity. The structure of PCFs, characterized by microscopic air holes […]
Introduction The surge in demand for high-capacity wireless communication has catalyzed the exploration of terahertz (THz) frequencies, typically ranging from 0.1 to 10 THz. These frequencies offer immense bandwidth potential, but also present formidable propagation challenges. One promising approach to maximizing spectral efficiency in THz systems involves the use of orbital angular momentum (OAM) modes, […]
