Sharif Digital Repository

In the present study, a 3D porous graphene-carbon nanotube (G-CNT) network is successfully constructed on the surface of glassy carbon electrode (GCE) by electrochemical co-deposition from a concentrated graphene dispersion. The large accessible surface area provided by the interpenetrated graphene backbone in one hand and the enhanced electrical conductivity of the 3D network by incorporating CNTs on the other hand, dramatically improved the electrochemical performance of GCE in determination of Methotrexate (MTX) as an important electroactive drug compound. Under the optimum conditions, the electrode modification led to a significant increase in the anodic peak current (∼25 times) along... 

This paper proposes three ILP-based static thermalaware mapping algorithms for 3D Networks on Chip (NoC) to explore the thermal constraints and their effects on temperature and performance. Through complexity analysis, we show that the first algorithm, an optimal one, is not suitable for 3D NoC. Therefore, we develop two approximation algorithms and analyze their algorithmic complexities to show their proficiency. As the simulation results show, the mapping algorithms that employ direct thermal calculation to minimize the temperature reduce the peak temperature by up to 24% and 22%, for the benchmarks that have the highest communication rate and largest number of tasks, respectively. This... 

High integration and increased elements density in 3D Network on Chip (NoC) will cause more energy consumption and high temperature on chip. By mapping those tasks that have data communication between them to near cores, the communication delay and therefore, power consumption will be reduced. In addition, mapping the tasks to cores that are near the heat sink, in such a way that the generated heat is distributed indiscriminately all over the chip, will decrease maximum chip temperature. In this paper, we propose a task mapping method based on fuzzy logic that aims to alleviate power and thermal problems in 3D-NoCs. In this method, the weight of task mapping factors can be changed according...