Chandigarh University

About: Chandigarh University is a education organization based out in Mohali, India. It is known for research contribution in the topics: Computer science & Chemistry. The organization has 1358 authors who have published 2104 publications receiving 10050 citations.

Challenges and Developments in Secure Routing Protocols for Healthcare in WBAN: A Comparative Analysis.

Abstract: The rise in life expectancy of humans, COVID-19 pandemic and growing cost of medical services has brought up huge challenges for the government and healthcare industry. Due to unhealthy lifestyle, there is an increased need for continual health monitoring and diagnosis of diseases. Wireless Body Area Network (WBAN) is attracted attention of researchers as various biosensors can be embedded in or worn on the body of human beings for the measurement of health parameters. The patient's health data is then sent wirelessly to the physician for health analysis. The biosensors used to measure physiological parameters have limited power due to its small size and hence smaller form factor. For the longevity of the network, it is imperative to transmit the data in an energy-efficient manner. Moreover, the health information of the patient is stringently private. Hence, the privacy and security of transmitted information needs to be ensured. It necessitates the development of effective, lightweight and secure routing protocols that provides security with minimal use of resources. This paper has identified the numerous security requirements in WBANs and has provided the extensive review on existing secure routing protocols reported in the literature. A comparative analysis of the various existing state-of-the art secure routing protocols and critical analysis based on security techniques along with different performance parameters has been presented.

Auto combustion synthesis and characterization of Co doped ZnO nanoparticles with boosted photocatalytic performance

Abstract: In this report, pure ZnO and Co doped ZnO (1, 2.5, 5, 7.5 wt% of Co) nanoparticles were synthesized by using one-pot flash combustion synthesis technique. Structural, morphological, optical and photocatalytic properties of the prepared samples were analyzed by using different characterization techniques. The X-ray diffraction results shows the pure ZnO and Co:ZnO samples exhibits hexagonal wurtzite structure having preferential growth along the (101) plane without the presence of secondary phase impurities. The crystalline size of the 7.5% Co:ZnO sample was found to be higher with a value of 27.14 nm with low dislocation density and strain values of 1.36 × 10−3 and 4.38 × 10−3, respectively compared to the other prepared samples. The morphology of the prepared samples were obtained using FESEM analysis which revealed a non-uniform spherical shaped nanoparticles for pure ZnO and the morphology becomes uniform with the incorporation of the Co dopants. The e-mapping and the EDX results confirms the presence of Zn, O and Co elements. UV–Vis. absorption spectrum revealed that the inclusion of Co dopants in ZnO incorporation leads to higher absorption and decrease in band gap. The band gap values of ZnO are noticed to be reduced from 3.27 eV 2.81 eV with Co doping from 0 to 7.5 wt%. Photocatalytic performance of the prepared samples was evaluated in the decolourization reaction of methyl green aqueous solution under the illumination. The prepared Co doped ZnO samples exhibited several times higher photocatalytic activity than bare ZnO. The kinetic model was proposed and the rate constant for the decolourization reactions was calculated. The best performed sample was 5 wt% Co, in which the rate constant was 2.6 times higher than that of bare ZnO.