The investigation embodied in the thesis entitled “SYNTHESIS, CATALYSIS AND THEORETICAL INVESTIGATIONS ON Ru(II) AND Ru(III)-NHC COMPLEXES” was initiated in July 2018 in the Department of Chemistry, Indian Institute of Technology Indore. The objectives of this thesis are synthesizing new Ru(II)-NHC complexes bearing the protic and classical NHC in one molecule and study their structural electronic and catalytic application. The theoretical investigation on Ru(III)-NHC precursor complexes util...

Shape memory alloy (SMA) thin films-based structures have drawn much attention for a wide variety of applications such as beam deflection, interferometry, optical coherence tomography, microvalves, temperature sensors, micro grippers, micro-pumps, and micro-robots. These phase-change materials allow the freedom to alter the characteristics as per the requirements by changing the composition and fabrication conditions which are of utmost importance for SMA based device fabrication. The current...

This thesis explores application of an yttrium oxide (Y₂O₃)-based memristive crossbar array (MCA) model, MCA developed through a dual ion beam sputtering system, for high cyclic stability in resistive switching applications. The experimentally obtained data from the fabricated MCA was validated against an analytical MCA-based model, showing excellent alignment with experimental results. Utilizing this validated model, we applied it to biomedical image processing, specifically in analysing com...

[Abstract is restricted for 01 Year, due to IPR related issue]

In order to improve vehicle fuel efficiency and reduce carbon emissions in the environment, the demand for lightweight materials has increased day by day in the transportation industry. Magnesium (Mg) and alloys serve as the exceptionally lightest structural materials available compared to Aluminium, Titanium, and Steel. Amongst the available, AZ91 (Mg-Al-Zn) alloy is the most widely used Mg alloy in the automotive industry owing to its excellent die-castability and adequate mechanical proper...

[No abstract available]

This study investigated the potential of Amacha, a traditional Japanese sweet tea made from Hydrangea macrophylla var. thunbergii and its primary bioactive compounds hydrangenol and phyllodulcin to inhibit severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We found that both Amacha and its dihydroisocoumarin constituents significantly reduced the infection rate of pseudoviruses expressing the SARS-CoV-2 spike protein, including the Wuhan and Omicron variants, in Caco-2 ce...

Conducting two-dimensional metal–organic frameworks (2D-MOF) has emerged as a promising class of material in the sensing technologies, but often lags behind traditional metal oxides in terms of sensitivity and repeatability. Herein, a conducting Copper(I) ionic 2D-MOF (iMOF-IITI) constructed with 4-(1H-1,2,4-triazol-1-yl)pyridine is reported for the chemiresistive sensing of NO2. The sensor demonstrates an excellent response of 4456% to 100 ppm NO₂, with rapid response and recovery times of 1...

Neurological injuries or neurodegenerative diseases can lead to dysarthria, a condition that impairs speech intelligibility. Accurate detection of dysarthria and its severity from speech signals are crucial for advancing smart healthcare solutions. This study presents an automated system for dysarthria detection and severity classification, using a Fourier-Bessel series expansion-based flexible time-frequency coverage wavelet transform (FBSE-FTFCWT) and an autoencoder. Initially, FBSE-FTFCWT ...

Feature selection has been extensively explored in supervised learning contexts. Conversely, it is much more challenging in unsupervised learning due to the lack of class labels that facilitate the identification of relevant information. The Laplacian Score is an important metric for feature selection that can work efficiently without the need for class labels. However, traditional computation of the Laplacian Score is computationally intensive and not feasible for large-scale datasets. In th...

The intricate world of cellular processes relies significantly on the dual-specificity tyrosine-phosphorylation-regulated kinase (DYRK) family of kinases, governing vital functions like brain development, splicing regulation, and apoptosis. DYRK1A, in particular, stands at the center of attention due to its pivotal role. Disruptions in its activity, whether through upregulation or downregulation, have profound implications, notably in neurological disorders and cancer progression. Understandi...

Iron ore tailings (IOT), a by-product of mining, present significant environmental challenges due to their disposal. Previous studies have explored the use of IOT in construction and geotechnical applications, but limitations such as inadequate strength development and environmental concerns have restricted its widespread adoption. The motivation for this study stems from the need for a sustainable and effective solution to repurpose IOT while addressing these challenges. This study investiga...

The Internet of Things (IoT) is growing rapidly. IoT adoption and expansion have contributed to a sharp rise in IoT malware attacks. IoT malware is malicious software that causes harm to IoT devices by performing unauthorized actions that can harm the data, intrude on privacy, and exploit the system. Detection of IoT malware is the process of finding and preventing harmful software from infecting IoT devices. The existing methods for IoT malware detection do not focus on discriminative featur...

AA1100 sheets have a wide range of applications in different industries, such as automotive, aerospace, heat exchangers, and nuclear sectors and in its application, joining and forming play an important role. In this process, a simple toolset, which includes a die, a punch, and a punch holder, is used to produce the joint. It is favoured in applications where the sheets interlock without undergoing significant plastic deformation. However, joints created through clinching typically exhibit po...

The road infrastructure of any nation is a key component of its infrastructure and its economy. Flexible pavements are the dominant portion of the road infrastructure in India and utilize vast natural resources in construction. Given the scarcity of natural resources, there is a pressing need for innovative solutions to reduce their consumption. In this context, geosynthetics, particularly geogrids, are recognized for their potential to enhance the sustainability of flexible pavements by redu...

Abstract: The Oceansat-3 Ku-band Scatterometer (OSCAT-3) payload onboard the Earth Observation Satellite-06 (EOS-06), provides valuable global sea surface winds. The scatterometer was launched on November 26, 2022 by the Indian Space Research Organisation (ISRO). It is well known that the scatterometer measurements are contaminated in the presence of isolated rain events. The idea of the present study is to (i) study the impact of rain on OSCAT-3 wind retrievals in the presence of isolated ra...

Nanoclusters designed with atomic precision are poised to transform next-generation electrode materials for energy devices due to their exceptional performance. However, traditional computational studies often focus solely on individual nanoclusters, neglecting the impact of structurally diverse, low-energy isomers that coexist in a sample. Herein, we present a data-driven approach to screen late-transition metal-based core-shell nanoclusters for bifunctional electrocatalysis. Utilizing geome...

[No abstract available]