A5103187869- Phase Change Materials Research
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Chalcogenide Semiconductor Thin Films
- Solar Thermal and Photovoltaic Systems
- Advanced Surface Polishing Techniques
- Advanced Battery Materials and Technologies
- Quantum Dots Synthesis And Properties
- MXene and MAX Phase Materials
- Advanced machining processes and optimization
- Lubricants and Their Additives
- 2D Materials and Applications
- Tribology and Wear Analysis
- Heat Transfer and Optimization
- Cardiac, Anesthesia and Surgical Outcomes
- Copper-based nanomaterials and applications
- Spacecraft and Cryogenic Technologies
- Graphene and Nanomaterials Applications
- Ultrasound in Clinical Applications
- Heat Transfer Mechanisms
- ZnO doping and properties
- Advanced Battery Technologies Research
- Nanoparticles: synthesis and applications
- Aerogels and thermal insulation
- X-ray Diffraction in Crystallography
University of Arkansas at Fayetteville
2023-2024
University of Engineering and Technology Lahore
2018-2021
International Islamic University, Islamabad
2018-2020
University of Lahore
2019
Australian National University
2014
Phosphorene is a new family member of two-dimensional materials. We observed strong and highly layer-dependent photoluminescence in few-layer phosphorene (two to five layers). The results confirmed the theoretical prediction that has direct layer-sensitive band gap. also demonstrated more sensitive temperature modulation than graphene MoS2 Raman scattering. anisotropic response enabled us use an optical method quickly determine crystalline orientation without tunneling electron microscopy or...
Abstract The emissions from coal power plants have serious implication on the environment protection, and there is an increasing effort around globe to control these by flue gas cleaning technologies. This research was carried out limestone forced oxidation (LSFO) desulfurization (FGD) system installed at 2*660 MW supercritical coal-fired plant. Nine input variables of FGD system: pH, inlet sulfur dioxide (SO2), temperature, nitrogen oxide (NOx), O2, air, absorber slurry density, humidity,...
Friction and wear are very crucial aspects of the performance, service life, operational costs for a mechanical component or equipment. To reduce friction at interface sliding mating parts, different conventional binary coatings like TiN, CrN, TiC, etc., have been used in last two decades. But ternary nitride replaced due to better tribo-mechanical properties. Now, being extensively several fields such as cutting tools, machinery orthopedic implants, microelectronics, marine equipment,...
The surface coating is one of the novel approaches to enhance performance and durability mechanical components by decreasing wear friction among two interacting bodies. In this study, tribological properties titanium nitride (TiN) coatings were investigated on AISI 52100 bearing steel deposited low-temperature physical vapor deposition system. Surface morphology elemental composition TiN analyzed scanning electron microscope energy-dispersive X-ray spectrum, respectively. Substrate roughness...
Abstract Myristic acid-based silica (MA/SiO 2 ) nano-encapsulated phase change materials (NePCMs) were synthesized by the sol–gel process. Five different samples of MA/SiO nanocapsules prepared varying mass myristic acid. The characterized Fourier transform infrared spectrophotometer (FTIR), X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission microscope (TEM), energy dispersive X-ray (EDX), and dynamic light scattering (DLS). These characterization techniques confirmed...
Abstract We report a simple approach for synthesizing monodispersed, crystalline and size-tunable tin sulfide nanoparticles environment friendly next generation solar cell applications. Both SnS 2 could be potential nanomaterial cells. The structural, morphological, thermal optical properties were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), gravimetric analysis (TGA), diffuse reflectance spectroscopy (DRS) Fourier transform infrared (FT-IR). XRD spectra...
Piston ring and cylinder liner (PRCL) interface is a major contributor to the overall frictional wear losses in an IC engine. Physical vapor deposition (PVD) based ceramic coatings on liners rings are being investigated address these issues. High temperature requirements for applications of conventional coating systems compromise mechanical properties substrate materials. In current study, experimental investigation tribo-mechanical conducted various titanium nitride (TiN) coated PRCL...
Titanium nitride (TiN) is a hard-ceramic material having excellent wear and corrosion resistance properties. In this study, TiN coating has been deposited on carbide cutting inserts by low-temperature cathodic arc phsical vapor deposition (PVD) system. Comparative analysis of machining performance, based tool life work piece surface roughness, done between the TiN-coated uncoated in dry medium carbon AISI 1045 steel. Design experiments (DOE) technique along with response regression used for...
Abstract Passive cooling through phase change materials creates beneficial complimentary techniques aimed at providing thermal gradient mitigation during device operation without additional power requirements. These have been well studied but are difficult to implement due complications concerning effective enclosure of the liquid phase. Encapsulated PCM particles can be embedded in other form composites with stable solid-liquid transitions. This study characterizes a new composite silicone...
Abstract Phase change materials (PCMs) offer significant upside in passive cooling potential, allowing them to be integrated electronics as thermal buffers prevent damaging localized heating effects. This impact can greatly improve the reliability of electronic packages and reduce opportunity for stress induced failures. Integrating into is difficult, especially case PCMs, additional packaging architectures are needed facilitate PCM incorporation that often negatively affects module’s power...
Abstract Green synthesis technique of nanoparticles has advantages over physical and chemical methods due to its simplicity in preparation, environment friendly nature less time consuming. We report a green approach for the zincoxide using leave extract from melia azedarach . Melia plant been traditionally famous antibacterial properties. The acts as reducing capping agent, while zinc nitrate hexahydrate [Zn(NO 3 ) 2 .6H O] was used precursor. formation ZnO observed by color changes during...
Phosphorene is a new family member of two-dimensional materials. We observed strong and highly layer-dependent photoluminescence in few-layer phosphorene (2 to 5 layers). The results confirmed the theoretical prediction that has direct layer-sensitive band gap. also demonstrated more sensitive temperature modulation than graphene MoS2 Raman scattering. anisotropic response enabled us use an optical method quickly determine crystalline orientation without tunneling electron microscope (TEM)...
Paraffin-based Silica (SiO2) and titanium dioxide (TiO2) nano-encapsulated phase change materials (NePCMs) were successfully synthesized via the sol-gel method to enhance thermal performance. The prepared NePCMs characterized using fourier transform infrared spectrophotometer (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), dynamic light scattering (DLS). latent heat for SiO2-NePCM TiO2-NePCM was found be 115.0 73.47 J/g respectively determined from differential...
Abstract Electronics are continuing to trend toward reduced size and increased power density. This creates a lot of thermal management challenges within systems leading reliability concerns. To avoid component failure due high gradients, often present in new designs, multiple cooling technologies need be combined achieve an optimal solution for each package. Passive architectures beneficial complimentary because they can provide gradient mitigation without requiring input operate. Phase...