We study the joint action of the non-Poisson renewal events (NPR) yielding Continuous-time random walk (CTRW) with index α < 1 and two different generators of Hurst coefficient H = 0.5, one generating fractional Brownian motion (FBM) and another scaled Brownian motion (SBM). We discuss the ergodicity breaking emerging from these joint actions and we find that in both cases the adoption of time averages leads to localization. In the case of the joint action of NPR and SBM, localization occurs when SBM would produce subdiffusion. The joint action of NPR and FBM, on the contrary, may lead to localization when FBM is a source of superdiffusion. The joint action of NPR and FBM is equivalent to extending the CTRW to the case where the jumps of the runner are correlated and we argue that the the memory-induced localization requires a refinement of the theoretical perspective about determinism and randomness.
The Terahertz (THz) region lie in the range 0.1 THz to 10 THz. It can pass easily through fog, smoke, thin walls, and clothes and be focused as a light wave to create images of objects. Terahertz waves are applied in imaging technology, such as safety, navigation, and non-destructive evaluation (NDE) technique used for materials analysis. A microbolometer is a micromachined device to measure the inherent power of incident electromagnetic radiation. The resistance of bolometer is temperature-dependent, and it varies with changes in the temperature of the exposed surface. Bolometric detectors dominate the market due to their affordability and ease of manufacturing. Despite their slow response time, the systems are still actively employed in the research area, aiming at improved terahertz detection. The antenna and bolometer are coupled. The chosen antenna has a resonance at desired frequency leading to the development of fast response time bolometers without compromising the collection area of the bolometer. The system has low cost, easy fabrication, and better isolation. Antenna simulations were conducted to design and optimize the spiral antenna for 1 to 2.5 THz using HFSS (high-frequency structure simulator) simulation software. The antenna simulation results are presented and discussed.
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