Halide perovskite quantum dots (QDs) have gained attention as potential materials for optoelectronics and quantum photonics applications due to their adjustable band gap, high photoluminescence quantum yield (PLQY), narrow emission, and facile synthesis. Here, we have focused on colloidal synthesis and characterization of cesium lead bromide (CsPbBr3) QDs, and optimization of reaction parameters to study and analyse their optoelectronic properties. The quantum dots were synthesized using the ...

Photodetectors(PDs) have many important applications in various fields; there is always a race to make them better and advanced. However, typical PDs are made of Si, GaAs, or some other semiconductors, and they are fragile. Recently, researchers discovered some inorganic-organic (hybrid) halide perovskite materials, which show enhanced parameters for optoelectronic applications. Since perovskites are flexible too, they fall into our main interest of making flexible photosensing devices. This...

Boranes made up of boron and hydrogen atoms, are fascinating compounds known for their diverse structures and high reactivity. Because of these properties, they play important roles in various chemical transformations—ranging from reduction reactions and hydride transfers to catalysis in polymerization and cross-coupling processes. N-heterocyclic carbenes (NHCs), which are strong electron donors, are often used as ligands to stabilize reactive species, not only in transition metal chemistry b...

In this project, we study spin pumping using ferromagnetic irradiation in a junction of ferromagnetic insulator and a 2D hole gas of a p-AlGaAs/GaAs semiconductor heterostructure. We use microwave radiation to precess the spin in the ferromagnetic insulator layer. In a 2-dimensional hole gas, the Rashba SOC and Dresselhaus SOC interactions coexist and play crucial roles in our spin pumping system by delivering two spin species electrons, spin-up and spin-down, which in turn interact with the ...

Chiral ruthenium N-heterocyclic carbene (NHC) complexes form a diverse and versatile class of organometallic compounds with a wide range of structural variations and applications. This study presents our attempts on the separation of diastereomers of thermally stable octahedral Ru(II)-CNC pincer complexes.1 However, diastereomer separation proved unsuccessful utilizing camphor sulfonate as a chiral auxiliary. Consequently, the approach shifted towards pre-reported Ru(II)-NHC-DMSO and Ru(II)-N...

Pesticides are widely used in agriculture to protect crops from pests and increase yields. However, their use has been associated with adverse environmental and health effects due to organophosphate (OP) pesticides. OP poisoning has been linked to various symptoms, including neurological disorders and death. To address these issues, there is a growing interest in developing methods for detecting pesticides and the remediation of contaminated soils and water. The present study investigates the...

Transition metal complexes bearing protic-NHC (N-heterocyclic carbene) ligands have attracted significant attention due to their unique structural and electronic properties. However, their catalytic potential remains relatively underexplored. This work presents and discusses the catalytic applications of ruthenium complexes featuring protic-NHC ligands. Specifically, we report the synthesis and characterization of pincer ligand-based ruthenium complexes incorporating halide derivatives, iodo ...

Understanding the crystal structure of two-dimensional (2D) materials is crucial for determining their physical properties and potential applications. This thesis focuses on the structural investigation of Two dimensional Materials like ZrSe2, TiSe2, and ZrSe3, synthesized using the Chemical Vapor Transport (CVT) method. The study employs X-ray Diffraction (XRD) to determine phase purity, lattice parameters, and symmetry, providing insights into stacking configurations and possible distor...

The detection of trace amounts of hazardous hydrogen sulfide (H<inf>2</inf>S) gas is crucial for environmental monitoring and industrial safety. In this study, pristine and palladium (Pd)-doped molybdenum disulfide (MoS<inf>2</inf>) thin films with varying Pd concentrations (1, 2, 5, and 10 at%) were synthesized on SiO<inf>2</inf>/Si substrates using atmospheric pressure chemical vapor deposition (APCVD). Gas sensing performance was analyzed at room temperature (RT) in a dynamic flow gas sens...

Nickel cobalt sulfide (NiCo<inf>2</inf>S<inf>4</inf>; NCS) is known for its notable inherent electronic conductivity and high theoretical capacity, attributed to its excellent redox behavior. However, developing well-defined hierarchical nanostructured NCS with ample electroactive interfaces remains a persistent challenge. In this study, we report reaction time-dependent hydrothermal synthesis of NCS nanoparticles, which transform into nanoflakes under controlled reaction conditions. With ext...

There is an urgent requirement for a rapid, reliable, ultra-sensitive, and cost-effective portable solution to detect and quantify uric acid (UA) levels in human biological fluids (blood, urine, serum and saliva). In this work, we have developed a low-cost, portable internet of things (IoT) enabled UA sensor system that can efficiently measure lower, middle, and higher levels of UA concentration in real samples. It can effectively measure UA concentrations in the range of 100 μM to 1000 μM, w...

Fragile X-associated Tremor/Ataxia Syndrome (FXTAS) is a debilitating neurodegenerative disorder linked to CGG trinucleotide repeat expansions in the FMR1 gene. These expanded repeats produce toxic FMR1poly-Glycine (FMR1polyG) proteins in neurons through mechanisms such as Repeat-Associated Non-AUG (RAN) translation and RNA foci formation, driving disease progression. In this study, we investigate the potential of Nitazoxanide (NTZ), a broad-spectrum antiparasitic and antiviral medication, as...

In post-CMOS technology era, emerging data structures for logic synthesis and technology mapping have gained importance to support efficient design automation. Majority-Inverter Graph (MIG) comprise a homogeneous structure of majority and inverter nodes and has recently emerged as a prominent logic representation structure for logic synthesis and optimization. Minority-majority-inverter graph (mMIG), which comprises of majority, minority and inverter node, shows a promise in optimizing invert...

Recent advancements in AI and UAV (Unmanned Aerial Vehicle) technology have enabled real-time precision farming applications, transforming traditional agricultural practices. This paper presents a novel farm inspection system combining UAVs, deep learning, and AI edge devices to analyze crops and livestock in real time. Utilizing the lightweight YOLOv8n object detection model on the NVIDIA Jetson Orin Nano, the system achieves rapid detection of crop diseases, plant health issues, and livesto...

The tropical and sub-tropical forests in the foothills of the Himalayas are under threat of deforestation and degradation. With launch of India's EOS-04 C-band SAR, it is important to assess its capabilities to monitor these forests. This study uses multi-sensor C-band SAR data from EOS-04 and S-1 for deforestation mapping across multiple forests in India. To understand the performance of these two datasets in a controlled environment with a sufficient number of logging events within a two-ye...

An interesting iterative procedure is proposed to solve two-player zero-sum Markov games. Under suitable assumptions, the boundedness of the proposed iterates is obtained theoretically. Using results from stochastic approximation, the almost sure convergence of the proposed multi-step minimax Q-learning is obtained theoretically. More specifically, the proposed algorithm converges to the game theoretic optimal value with probability one, when the model information is not known. Numerical simu...

Compositionally tuned Ni-Co-Fe alloy films with iron (Fe) concentration from 1 to 14 at% are electrodeposited on stainless steel. The effect of iron addition to Ni-Co alloy on electrocatalytic hydrogen evolution reaction (HER) is studied in 1 M KOH. Iron (Fe) is incorporated to lower the nickel (Ni) content from ∼45 at% to ∼31 at% in Ni-Co alloys, resulting in notable changes in structural, morphological, and electronic properties. Structural and morphological analysis confirm that the Ni-Co-...

The present study investigates the effect of the solar terminator time (TT) on the low- and equatorial latitude transmitter–receiver great circle path (TRGCP). The VTX transmitter—operated by the Indian Navy—is a very low frequency (VLF) transmitter functioning at 18.6 kHz and located near Vijayanarayanam in southern India (8.387° N, 77.752° E). It has a transmission power of 500 W. The NWC transmitter, situated at North West Cape, Australia (21.82° S, 114.17° E), operates at 19.8 kHz and is ...

Differential two-particle normalized cumulants (R2) and transverse momentum correlations (P2) are measured as a function of the relative pseudorapidity and azimuthal angle difference (Δη,Δφ) of charged particle pairs in minimum bias pp collisions at s = 13 TeV. The measurements use charged hadrons in the pseudorapidity region of |η|<0.8 and the transverse momentum range 0.2 <pT< 2.0 GeV/c in order to focus on soft multiparticle interactions and to complement prior measurements of these correl...