Introduction Label-Free Photonic Crystal Sensors (PhC) represent an increasingly vital class of optical biosensors, designed for real-time detection of biomolecular interactions without requiring fluorescent or radioactive labels. Unlike traditional techniques that rely on tagging molecules, PhC sensors detect shifts in light behavior as biomolecules bind near a photonic structure, offering precise, non-invasive readouts. These sensors […]
Introduction to THz Photonic Crystal Fibers Terahertz (THz) photonic crystal fibers (PCFs) have gained significant attention due to their ability to guide electromagnetic waves in the THz frequency range (0.1–10 THz). Unlike conventional dielectric fibers, THz PCFs leverage photonic bandgap (PBG) guidance, hollow-core propagation, and air-clad structures to minimize loss and improve dispersion control. These […]
Introduction The simulation of numerical laser pulses within the context of Finite Element Analysis (FEA) has emerged as a crucial focus in both academic research and industrial innovation. This involves modeling how discrete, high-energy laser pulses interact with materials to induce localized heating, melting, ablation, or even structural transformation. Unlike continuous wave lasers, pulsed lasers […]
Laser sources play a critical role in numerical simulations across various fields, including photonics, material processing, biomedical optics, and optical communication. In Finite Element Analysis (FEA) and Finite-Difference Time-Domain (FDTD) simulations, different types of laser sources are modeled to study their interaction with matter, wave propagation, and nonlinear effects. The choice of laser source depends […]
Introduction Laser pulse simulations are essential for understanding ultrafast optical interactions, nonlinear effects, and photonic device performance. In finite element analysis (FEA) and finite-difference time-domain (FDTD) simulations, setting up a laser pulse involves defining temporal and spatial characteristics of the pulse, ensuring correct boundary conditions, and incorporating the interaction with the material properties. This article […]
Introduction Metasurface absorbers are an emerging class of artificially structured materials engineered at the sub-wavelength scale to achieve near-perfect absorption of electromagnetic waves. These structures manipulate incident radiation through carefully designed geometric patterns and material compositions, enabling strong, frequency-selective, and often tunable absorption capabilities. Unlike traditional bulk absorbers, metasurface absorbers are compact, lightweight, and can […]
Introduction Metasurfaces are ultra-thin, artificially structured materials designed to manipulate electromagnetic waves in unprecedented ways. Unlike conventional optical components that rely on gradual phase accumulation through bulky media, metasurfaces engineer abrupt changes at subwavelength scales using nano-patterned “meta-atoms.” These structures grant remarkable control over amplitude, phase, and polarization, opening a new frontier in optics, sensing, […]
Introduction Photonic crystal (PhC) biosensors have emerged as vital tools in the landscape of cancer diagnostics, primarily due to their ability to offer high sensitivity, rapid response, and label-free detection. These sensors operate on the principle of manipulating light through periodic dielectric structures that produce photonic bandgaps. Variations in local refractive index—such as those caused […]
Introduction FEA Simulation is a computational method used to predict the behavior of structures and systems under real-world physical conditions. By solving complex partial differential equations (PDEs) over discretized domains, FEA allows engineers to simulate stress, heat transfer, fluid dynamics, and more—well before a physical prototype is built. As industries continue to evolve under the […]
Introduction Radar Absorbing Materials (RAM) are engineered to mitigate the reflection of electromagnetic (EM) waves, particularly in radar frequencies, by absorbing incident energy and converting it into negligible heat. This property significantly reduces the radar cross-section (RCS) of an object, making it less detectable to radar systems. RAMs serve as a pivotal technology in modern […]
