Designing a Secure IoT Network by Using Blockchain

3rd International Symposium on Multidisciplinary Studies and Innovative Technologies, ISMSIT 2019 -- 11 October 2019 through 13 October 2019 -- 156063By the emergence of many intelligent application areas that can be diversified, such as homes and cities being smarter, creates new opportunities. It is clear that the Internet of Things (IoT) will be a large network with a growing number of connected devices at as a logarithmic speed in the coming years. IoT devices are embedded system elements that range from simple to complex. Typically, these IoT devices are more vulnerable to attack than other IoT endpoint devices, such as smartphones, tablets, computers, or servers, because they are limited in processing, storing, and networking capacity for information. Blockchain is a distributed, encrypted, immutable, and low-tolerance distributed ledger application. It is increasingly used in areas where data security is important. In this study, it is aimed to use IoT devices as blockchain elements as a solution to existing IoT security problems. A blockchain network was created by using Raspberry Pi 3 elements. © 2019 IEEE.2-s2.0-8507804430

Insights into surface-adsorbate interactions in corrosion inhibition processes at the molecular level

2-((3-Methylpyridine-2-imino)methyl)phenol (MPIMP) was investigated as a potential corrosion inhibitor for mild steel in 0.5. M HCl solution using impedance spectroscopy (IS). Changes in impedance parameters indicated that adsorption of MPIMP occurred on the mild steel surface. Three stable adsorption configurations for MPIMP on the Fe(1. 1. 0) surface were identified as a result of geometry optimization starting from several adsorption geometries using density functional theory (DFT). Involvement of the delocalized ?-electrons of the aromatic rings in the interaction provides extra stabilization to the flat adsorption configurations. © 2013 Elsevier Ltd.Muzaffer Özcan and İlyas Dehri would like to thank the Çukurova University Research Fund for the financial support. Daniele Toffoli and Hande Üstünel wish to thank ULAKBIM (TR-GRID) for computational resources

First-principles investigation of NO x and SO x adsorption on anatase-supported BaO and Pt overlayers

We present a density functional theory investigation of the adsorption properties of NO and NO 2 as well as SO 2 and SO 3 on BaO and Pt overlayers on anatase TiO 2(001) surface. Monolayers, bilayers, and trilayers of BaO grow without strain-induced large scale reconstructions. While the bilayer and trilayer preserve, to a large extent, the NO 2 adsorption characteristics of the clean BaO(100) surface, the effect of the support is evident in SO 2 and SO 3 adsorption energies, which are somewhat reduced with respect to the clean BaO(100) surface. When a Pt(100) layer is added on the TiO 2 surface, four stable adsorption geometries are identified in the case of NO while NO 2 is found to adsorb in only two configurations. © 2012 American Chemical Society