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Fuzzy logic-based control systems are widely used in various fields like home appliances, medical instruments, automobiles, textile machinery, agriculture equipment and aviation for process control and data analysis. Fuzzy logic technique has shown great potential to solve the complex problems of physical world due to similarity with human understanding. Its advancements have gained widespread attention in different research areas. In several cases, it is very suitable for electronic devices which need to be precisely self-powered. In this work, an ANSYS-based simulation, fuzzy analysis, development and testing of a microelectromechanical system (MEMS)-based energy harvester have been presented. Zinc oxide (ZnO) nano rods were synthesized on an anodic aluminum oxide (AAO) template to form the MEMS energy harvester and study the effect of energy generation by applying force. The power of 5.16 nano Watts has been obtained by taking the numerical value of voltage (Voc) and current (Isc) as 3.16 mV and 0.985 µA respectively using fuzzy logic tool. Experimental testing of the harvester shows that the range of Voc is 3–6.4 mV and Isc is 0.45–1.5 μA. The results depict that this device can be used for touch screens to generate energy that can be further utilized for charging smart devices.

In an effort to better constrain the crystallization ages of some Neopreterozoic granitic plutons, the precise SHRIMP U-Pb zircon geochronology was used. The studied granites comprise G. Abu Marwa, G. El-Glouf, G. Faliqu El-Sahl and Faliqu El-Waar, and G. Gattar in the north Eastern Desert of Egypt. The crystallization ages for the studied monzogranites and syenogranites range between 595 to 605 Ma (Abu Marwa, 595± 8.5 Ma, El-Glouf 596.4±11.2 Ma, Faliqu El Sahl and El Waar 605.1±10 Ma), whereas Gattar granites recorded 580±22.2 Ma. The obtained data revealed the ages of magmatic crystallization as well as the presence of slightly older presumably inherited zircon grains. Xenocrystic zircons are found in most of the younger granitoid samples; the xenocrystic grains are all of Neoproterozoic ages. They fall into three age ranges that correspond to the ages of other Eastern Desert igneous rocks. Discordant ages are related to the presence of slightly older inherited zircon grains and to the effect of radiation damage which acts as open system in which gain and loss of U and Pb and intermediate radiogenic daughter are common. These older zircons may be entrained from wall rock during late contamination inherited from contributing source materials. These older zircon are corresponding to Neoproterozoic igneous rocks.

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