Hydraulic jump – A galaxy in the kitchen?

The circular hydraulic jump may arise when a fluid jet falling vertically at high Reynolds number strikes a horizontal plate. Observed from below the symmetry of circular hydraulic jump breaks into a self-organized structure that consists of a spinning polygonal jump and logarithmic-spiral waves of fluid elevation downstream. The waves are strikingly similar to spiral density waves in galaxies. The fluid flow exhibits counterparts of salient morphological features of galactic flows, in particular the outflow from the center, jets, circum-nuclear rings, gas inflows toward the galactic center, and vortices. The hydrodynamic instability revealed here may have a counterpart that plays…

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Removal of Pb2+ and Cd2+ from aqueous solutions using magnetic oxide-carbon nanocomposites.

Wastewater treatment using various separation processes is necessary. Conventional methods of water treatment, like filtration, are insufficient when compared to techniques such as membrane separation and adsorption. Adsorption was found to be a preferable choice for the removal of metal ions owing to its simplicity. Carbon-based materials are widely used in water treatment. It is often physiochemically modified to enhance their mechanical stability, durability and surface properties. Ferrites of the formula MFe2O4 (M is a divalent metal cation) are very promising materials. Ferrites will be considered in this project because of their low cost, high activity, and efficient recyclability and…

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Design and development of smart functional materials for efficient water purification

The proposed project aims to deliver highly efficient and selective polymer membranes for water purification via rational design and synthesis. Among the interesting properties, we plan to uncover (1) the role of ordered structure in solvent flux and fouling control, (2) a tunable internal surface area and pore size distribution, and (3) the generality in synthetic inclusion of different pores into the polymer membrane. The planned synthesis potentially results in various polymers and/or membranes with high surface area and pre-designed network structures. These materials will be tested for their ability in removal of water pollutants via nano/ultra-filtration. This work provides…

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Design and development of porous conducting polymers for efficient desalination

The proposed project aims to design and synthesize series of conducting porous organic polymers for highly efficient desalination and reverse electrodialysis. The project involves tailoring the synthesis of pi-electron-rich porous polymers featuring impressive surface area by effective utilization of rich covalent chemistry. The planned synthesis potentially results in various polymers and/or membranes with high specific capacitance and pre-designed network structures with a highly accessible surface area. These materials will be tested for their ability as either anode or cathode material in electro-desalination cells that includes capacitive deionization (CDI) and reverse electrodialysis (RED). This investigation will be part of a larger…

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Design and development of novel covalent networks for CO2 removal and conversion

The proposed project aims to design and synthesize series of polymers for efficient CO2 adsorption and/or electro- or photochemical reduction to value-added products. The design of the project involves tailoring synthesis of polymers with catalytically active metal centers featuring high surface area and high chemical stability in extreme pH conditions. This work provides an experimental strategy that can be employed to control the physical and chemical properties of polymeric networks including their electronic and energy-states to achieve novel electro/photo-responsive behavior, and utilize them as green, sustainable environmentally benign and industrially viable catalysts. This investigation will be part of a larger…

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Synthesis of hierarchical zeolites with high framework Si/Al ratio

Even though the fluid catalytic cracking (FCC) process started ~75 years ago, it is still the prominent conversion technology in the oil refinery to produce gasoline, propylene and other valuable products. In spite of efforts to find alternative energy resources to meet sustainability and environmental protection, the difficulties on massive production of renewable energy suggest continuing use of oil for many decades due to its maturity, efficiency and the availability of technology know-how. Undoubtedly, zeolites are vital catalysts and the major component in the FCC process to date. Irrespective of the feed properties in FCC, occurrence of catalytic activity loss…

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Design of novel carbon-based cathodes for Lithium air batteries

Li-Air batteries are electrochemical cells which typically consist of a lithium metal anode and a carbon cathode known as the “air” electrode due to the utilization of oxygen as a reactant. Theoretically, Li-Air batteries have the highest specific energy density among batteries of about 3500 Wh kg-1 (including the mass of the cathodic product). This allows Li-Air batteries to store 5 to 10 times as much energy when compared to current state-of-the-art LIBs. Lithium ions and oxygen react at the cathode during discharge to form lithium peroxide (Li2O2). The focus of this work is on designing hierarchical porous carbon materials…

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Flow Characterization using Dynamic Multi-Nuclei NMR Imaging

Accurately measuring the properties of a flowing liquid or the components of a mixture of different liquids in real-time is of paramount importance in various applications.  Although the flow measurement and sensing technology has advanced over the recent years, there are still many critical functional requirements that are not yet met by the available technology. In this project, a novel, accurate, and cost effective real-time magnetic resonance (MR) flow measurement system will be developed and applied to improve upon the conventional measurement techniques.

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Development of Next Generation Antenna Systems, Khalifa University Space Technology and Innovation Center (KUSTIC)

Antenna systems are critical components in spacecraft and play essential functional role in any space mission. Antennas are the first elements in the radio frequency (RF) front-end in satellite communication systems, telemetry/telecommand units, remote sensing instruments, radars as well as positioning modules. Connectivity over space is possible with a radio wave link established by a transmitting antenna at one end and a receiving antenna at the other end. With the advent of small/nano-satellites, deep-space vehicles, and high speed networks, there has been an increasing demand for low-volume and lightweight antennas that could function optimally in the planned mission under harsh…

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Design of MFe2O4 nanoparticles as heterogeneous catalysts for wastewater treatment

Several techniques have been utilized to remove organic pollutants from industrial wastewaters. Among various wastewater treatment techniques, the advanced oxidation process (AOP) shows a high potential for the catalytic degradation of organic pollutants in water. The AOP is a safe and effective method to completely degrade organic pollutants by the generation of highly reactive free hydroxyl radical and leads to mineralization of CO2, H2O and mineral acids. Ferrites of the formula MFe2O4 (M is a divalent metal cation) are very promising catalysts for AOPs. Ferrites will be considered in this project because of their low cost, high activity, and efficient…

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Light Responsive MOF-based sponges for ultrafast and cost-effective adsorption desalination

Metal‑organic frameworks (MOFs) are crystalline microporous materials consisting of metal ions/coordination complexes connected by organic ligands into periodic structure. The pore size and surface properties can be tuned down to the molecular level based on the experimental conditions during the chemical synthesis. The project focuses on the development of an improved adsorptive desalination technology, whereby the cost-competitiveness of the MOF sponge technology and their potential for scale-up and commercialization will be evaluated. Student will be directly involved in the MOFs synthesis. In particular, parameters such as ion:ligand ratio, temperature, reaction volume, reaction time, will be optimized in order to obtain…

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Design and Development of Room Temperature Low-Cost Thermoelectric Materials

The objective of the project is to design and develop room temperature thermoelectric materials using the computational approache. First, the screening of different low-cost materials (2D and 3D) will be done and later the doping of suitable dopants in the screened materials will be investigated using computational approache. Composites and heterostructure of selected materials will be studies by first-principles calculations. The proposed Materials are SnO, CuI, PbO, CuO, Ca3Co4O9, Nitrides (like CrN), Cu2Se, Mg3Sb2, Mg2Si/Sn/Ge, SnSe, Ag2Se, Ag2Te1-xSx. The doping effect can include multi-valency ions like Co, Al, etc. Composites and heterostructure of some of the screened materials will be studied.

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Rock properties determination through imaging

The project aims to measure porosity and contact angle on rock surfaces through the ImageJ software. The intended dataset will establish a relatively novel approach to finding important reservoir properties of rocks.

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Statistical modeling of wettability of shale rocks

The project aims to collect the published datasets on the wettability of shale rocks. The data set will include contact angle, spontaneous imbibition, and NMR wettability of shales. Then the next part will be to develop correlations for shale wettability.

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Micro-Plastics Separation for Water Treatment Processes

Microplastics are widely dispersed throughout the marine environment. Millions of tons of lost or discarded plastic items are entering the world’s oceans at a rate that is expected to increase by an order of magnitude by 2025, unless current disposal practices are altered. Microplastics, defined as plastics <5 mm in size, form a numerically dominant component of this anthropogenic debris. These plastics may enter the environment as either primary microplastics, those manufactured to size, or secondary microplastics, which are generated from the breakdown of larger plastic items. Separation of microplastics is therefore a challenging topic. This research project intends to…

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Building Bioartificial Organs and Vessels

Currently, there is no cure for organ failure, but bioartificial constructs may help address this global problem. Decellularization provides a promising platform to generate transplantable tissues and organs. This process removes the cells from native structures to leave behind the intact extracellular matrix, which can be used as a scaffold to create new grafts. This technology has garnered much attention within the past decade, as decellularized scaffolds have been generated from equines, bovines, and humans. However, there is a dire need to improve the way we build a sustainable vasculature for transplantation. Our project aims to address this issue by…

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