10 research outputs found
Internet of Drones (IoD): Threats, Vulnerability, and Security Perspectives
The development of the Internet of Drones (IoD) becomes vital because of a
proliferation of drone-based civilian or military applications. The IoD based
technological revolution upgrades the current Internet environment into a more
pervasive and ubiquitous world. IoD is capable of enhancing the
state-of-the-art for drones while leveraging services from the existing
cellular networks. Irrespective to a vast domain and range of applications, IoD
is vulnerable to malicious attacks over open-air radio space. Due to increasing
threats and attacks, there has been a lot of attention on deploying security
measures for IoD networks. In this paper, critical threats and vulnerabilities
of IoD are presented. Moreover, taxonomy is created to classify attacks based
on the threats and vulnerabilities associated with the networking of drone and
their incorporation in the existing cellular setups. In addition, this article
summarizes the challenges and research directions to be followed for the
security of IoD.Comment: 13 pages, 3 Figures, 1 Table, The 3rd International Symposium on
Mobile Internet Security (MobiSec'18), Auguest 29-September 1, 2018, Cebu,
Philippines, Article No. 37, pp. 1-1
A thin film approach for SiC-derived graphene as an on-chip electrode for supercapacitors
© 2015 IOP Publishing Ltd. We designed a nickel-assisted process to obtain graphene with sheet resistance as low as 80 Ω square-1 from silicon carbide films on Si wafers with highly enhanced surface area. The silicon carbide film acts as both a template and source of graphitic carbon, while, simultaneously, the nickel induces porosity on the surface of the film by forming silicides during the annealing process which are subsequently removed. As stand-alone electrodes in supercapacitors, these transfer-free graphene-on-chip samples show a typical double-layer supercapacitive behaviour with gravimetric capacitance of up to 65 F g-1. This work is the first attempt to produce graphene with high surface area from silicon carbide thin films for energy storage at the wafer-level and may open numerous opportunities for on-chip integrated energy storage applications
Toward an Aqueous Solar Battery: Direct Electrochemical Storage of Solar Energy in Carbon Nitrides
Graphitic carbon nitrides have emerged as an earth-abundant family of polymeric materials for solar energy conversion. Herein, a 2D cyanamide-functionalized polyheptazine imide (NCN-PHI) is reported, which for the first time enables the synergistic coupling of two key functions of energy conversion within one single material: light harvesting and electrical energy storage. Photo-electrochemical measurements in aqueous electrolytes reveal the underlying mechanism of this solar battery material: the charge storage in NCN-PHI is based on the photoreduction of the carbon nitride backbone and charge compensation is realized by adsorption of alkali metal ions within the NCN-PHI layers and at the solution interface. The photoreduced carbon nitride can thus be described as a battery anode operating as a pseudocapacitor, which can store light-induced charge in the form of long-lived, trapped electrons for hours. Importantly, the potential window of this process is not limited by the water reduction reaction due to the high intrinsic overpotential of carbon nitrides for hydrogen evolution, potentially enabling new applications for aqueous batteries. Thus, the feasibility of light-induced electrical energy storage and release on demand by a one-component light-charged battery anode is demonstrated, which provides a sustainable solution to overcome the intermittency of solar radiation
Improved Diver Communication System by Combining Optical and Electromagnetic Trackers
The increasing need for observation in seawater or ocean monitoring systems has ignited a considerable amount of interest and the necessity for enabling advancements in technology for underwater wireless tracking and underwater sensor networks for wireless communication. This type of communication can also play an important role in investigating ecological changes in the sea or ocean-like climate change, monitoring of biogeochemical, biological, and evolutionary changes. This can help in controlling and maintaining the production facilities of outer underwater grid blasting by deploying unmanned underwater vehicles (UUVs). Underwater tracking-based wireless networks can also help in maintaining communication between ships and divers, submarines, and between multiple divers. At present, the underwater acoustic communication system is unable to provide the data rate required to monitor and investigate the aquatic environment for various industrial applications like oil facilities or underwater grit blasting. To meet this challenge, an optical and magnetic tracking-based wireless communication system has been proposed as an effective alternative. Either optical or magnetic tracking-based wireless communication can be opted for according to the requirement of the potential application in sea or ocean. However, the hybrid version of optical and wireless tracking-based wireless communication can also be deployed to reduce the latency and improve the data rate for effective communication. It is concluded from the discussion that high data rate optical, magnetic or hybrid mode of wireless communication can be a feasible solution in applications like UUV-to-UUV and networks of aquatic sensors. The range of the proposed wireless communication can be extended using the concept of multihop
AN EFFICIENT APPROACH FOR ROUTING IN WIRELESS AD HOC NETWORK USING ARTIFICIAL INTELLIGENCE
Abstract: MANETs are the set of small, low infrastructure communication setup that operates by consuming the energy of batteries. Thus, it is very much important for MANETs to perform efficiently. For efficient transmission, routing is of much concerned and should be performed intelligently. For this, artificial intelligence can be used to select the most optimized path. In this paper, optimized path is termed to path with no congestion. Thus, in the paper, we have proposed an artificial intelligence based on demand routing protocol (AIBODR) that eliminates the congestion in MANETs and applies the concept of artificial intelligence for selection of optimized path and also it solves the issues regarding congestion. We have used the NS-2 simulator for performing simulation regarding routing and MATLAB for artificial intelligence analysis