A5014131928- Metal and Thin Film Mechanics
- ZnO doping and properties
- Diamond and Carbon-based Materials Research
- Advanced Surface Polishing Techniques
- Advanced materials and composites
- Advancements in Battery Materials
- Ga2O3 and related materials
- Transition Metal Oxide Nanomaterials
- Copper-based nanomaterials and applications
- Clay minerals and soil interactions
- Force Microscopy Techniques and Applications
- Advanced MEMS and NEMS Technologies
- Advanced Battery Materials and Technologies
- Magnetic Properties and Synthesis of Ferrites
- Silicon Nanostructures and Photoluminescence
- Semiconductor materials and devices
- Agricultural Science and Fertilization
- Mechanical and Optical Resonators
- Mine drainage and remediation techniques
- Wireless Body Area Networks
- Multiferroics and related materials
- Quantum Dots Synthesis And Properties
- Dental Implant Techniques and Outcomes
- Agriculture, Soil, Plant Science
- Fatigue and fracture mechanics
Central University of Jharkhand
2022-2024
Odisha University of Agriculture and Technology
2024
Regarding quality inspection of technologically important nanocomposite hard coatings based on Ti, B, Si, C, and N bioceramics such as hydroxyapatite that are used in small-scale high-precision devices bio-implants, it is essential to study the failure mechanisms associated with nanoindentation, fracture, delamination, chipping. The stress imposed by indenter can affect fracture morphology interfacial energy, depending shape, substrate type, crystallographic properties, pre-existing flaws,...
Abstract Nanoindentation was performed on Ti-B-Si-C and SiCN films deposited Si substrates at varying loads depths of penetrations. The intensity chipping got enhanced with an increasing load which represented geometrically. pop-in pop-out events occurring in the unloading were explained as cracking high-pressure phase transformation. interfacial fracture stability adhesion film-substrate system, crucial for N/MEMS devices analyzed respect to frictional coefficient help Finite Element...
Abstract Because of its dimensional stability, minimal shrinkage, chemical and fire resistance, good mechanical qualities high resistance to a variety solvents, acids water, bismaleimide (BMI) thermosetting polymers are mostly employed in aerospace applications. Corrosion prevention has also been accomplished using BMI coating. The addition inorganic materials like metal oxides can influence the properties as an inorganic–organic composite. Ferric chloride–bismaleimide (FeCl 3 –BMI)...
ZnO was synthesised by the sol–gel method using zinc nitrate as precursor. doped with Al. Stress in lattice evident from XRD peak shifts. A higher concentration of Al+3 showed a reverse strain effect also causing optical properties. An increase crystallite size due to increased observed. variation absorption intensity based on defect energy levels difference emission and spectra resulting defects material non-radiative decay seen. change band gap observed changes different dopant...
Abstract Mixed transition metal oxide (MTMO) MnFe 2 O 4 was synthesized by the solution combustion method. The X‐ray diffraction (XRD) analysis confirmed cubic spinel structure with space group Fd3m. A specific capacity of 136 mAh g −1 in 1 M KOH and 193 LiOH obtained through cyclic voltammetry. formation nanoparticles size around 40 nm porous nature surface observed under field emission scanning electron microscopy (FESEM) which reveals its use as electrode material Li‐ion batteries. An...
Background: Weed infestation is a primary cause of reduced yields, with estimated losses ranging from 10-70% due to crop-weed competition in Indian mustard. Therefore, it essential implement effective weed control measures optimize the crop¢s yield potential. A combination herbicides manual, culturaland mechanical approaches desirable achieve optimal control. field experiment was carried out evaluate effect integrated management on productivity and profitability Methods: The conducted at...
The rGO-ZnO composite was found promising improvement over the photocatalytic ability of pure ZnO and is useful for other Opto-chemical applications. ZnO/rGO synthesized by sol-gel method. morphology rGO caused better dispersion crystallites reducing agent ammonia varied in concentration during synthesis. A reduction crystallization observed lower concentrations (0 – 1%) which got stabilized higher (>1%). crystalline showed variations from being close to amorphous 38 nm. average crystallite...
Ni doping in CuO showed successful replacement of Cu+2 ions by Ni+2 ions. Evidence strain being developed due to was seen. Change crystallite size observed depending upon the role as a nucleating center. Intensity variations absorption and emission spectra were which related amount defects or formation new phases materials. A wide window exciton. change band gap corresponding particle size. Zn caused variation incorporated had effect on optical properties. defect generated energy levels well quantum
Raman spectroscopy of amorphous hydrogenated carbon nitride (a-C: H: N) films deposited by PECVD respectively were studied. The three stage Ferrari Robertson model was used to explain the structural modifications taking place. A competition between cluster size growth and clustering itself identified. graphene graphane conversion leading hydrogen storage possibility in has been discussed. Higher nitrogen concentration also led smoothening films. nanocrystallites took place which evident through XRD.
The failure regions during sliding nano indentation of technologically important SiCN thin films resembled geometrical shapes Lemniscate and cardiod. An adhesive strength 9 GPa was estimated. followed two different stress regimes, one tangential responsible for the wear other axial film/substrate adhesion. EDS spectra scratched region shown complete failure.