Correlation of combustion noise with ignition-timing in an IC engine

ABSTRACT

The need for development of a more efficient IC engine is always on the rise which can be related to oil being a non-renewable resource and its increasing carbon foot print causing global warming. In addition to the CO₂, there are more toxic pollutants such as NOx, CO and HC due to improper combustion. These demands have paved way for development of alternative fuel engines such as bio-diesel, bio-ethanol and hybrids. Still these engines need to optimise their combustion to get the best of both worlds. And for the purpose of optimisation there must be a means to measure and estimate the combustion characteristics. Thus analysing the combustion noise gives some insight into the performance of the engine.     

Characteristics of GZO thin films deposited by sol–gel dip coating

Zinc oxide (ZnO) films were deposited by sol–gel dip coating using the acrylamide route. The films were doped with different concentrations of gallium in the range 250–1200 ppm. The films exhibited hexagonal structure. The grain size decreased from 100 to 10 nm as the dopant concentration increased. The resistivity of the doped samples decreased from 10³ to 3×10⁻³ Ω cm. The band gap value shifted towards the short-wavelength region as the dopant concentration increased. XPS studies indicated doping of Ga in ZnO     

Enhanced Performance of MoS2 Photodetectors by Inserting an ALD‐Processed TiO2 Interlayer

2D molybdenum disulfide (MoS₂) possesses excellent optoelectronic properties that make it a promising candidate for use in high‐performance photodetectors. Yet, to meet the growing demand for practical and reliable MoS₂ photodetectors, the critical issue of defect introduction to the interface between the exfoliated MoS₂ and the electrode metal during fabrication must be addressed, because defects deteriorate the device performance. To achieve this objective, the use of an atomic layer‐deposited TiO₂ interlayer (between exfoliated MoS₂ and electrode) is reported in this work, for the first time, to enhance the performance of MoS₂ photodetectors. The TiO₂ interlayer is inserted through 20 atomic layer deposition cycles before depositing the electrode metal on MoS₂/SiO₂ substrate, leading to significantly enhanced photoresponsivity and response speed. These results pave the way for practical applications and provide a novel direction for optimizing the interlayer material.     

Novel Ti/Al(OH)3 and Fe/Al(OH)3 Nano Catalyzed 4-Acetamidophenyl 3-((Z)-but-2-enoyl)phenylcarbamate Synthesis and its Molecular Docking,Quantum Chemical Studies

A series of novel 4-acetamidophenyl 3-((Z)-but-2-enoyl)phenylcarbamate based chalcone moieties have been synthesized via green chemical Ti/Al(OH)₃ and Fe/Al(OH)₃ nano catalyzed pathway and spectroscopic authentication of these synthesized molecules were interpreted by FT-IR, ¹H-NMR, ¹³C-NMR, Mass and elemental analysis. In-silico molecular docking studies of the compounds exhibited excellent binding energy (??8.06 kcal and ??8.94 kcal) towards the essential requirements of targeted compounds for EGFR receptor bearing quinazoline inhibitor (PDB ID: 1M17(Lapitinib). UV–Vis and fluorescence spectroscopy measurements evidenced that there is a significant effect on the absorption and emission spectra. Cyclic voltammetry (CV) studies reveal that HOMO and LUMO values of the compounds are evidenced that band along with intra molecular charge transfer character (D-π-A). The red shift maxima (500 nm) of the emission spectra in various solvent were increasing with the solvent polarity.

Graphical Abstract