Muhammad Atif Makhdoom- Dr.-Ing.
- Professor (Assistant) at University of the Punjab
Muhammad Atif Makhdoom
- Dr.-Ing.
- Professor (Assistant) at University of the Punjab
About
28
Publications
14,355
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249
Citations
Introduction
Being a Material Engineer, I have been involved in investigation of many different industrial problems since 2005, related to casting, welding & electronic devices. Special interest is to study the microstructural variations and its impact on mechanical, electrochemical and electronic properties of materials. My present research is laconically involved in fabrication of high efficiency and low cost materials for printable opto-electronic devices.
Current institution
Additional affiliations
November 2016 - March 2018
Matchless Engineering (pvt) Ltd
Position
- Consultant
July 2009 - present
January 2013 - October 2018
Education
January 2013 - September 2018
Publications
Publications (28)
The paper describes the joining of rolled plates of 2205 Duplex stainless steel (DSS) by Gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW). The development of different phases upon welding without any post heat-treatment – especially in the heat affected zone (HAZ) - and their consequent different corrosion resistance were inves...
This investigation aims at synthesizing and characterizing a biocomposite of hydroxyapatite (HA) and titanium (Ti) as a functionally graded material (FGM) via an economical powder metallurgy route. Ti particles were produced through drilling and chipping, followed by compaction and sintering. Ti foams, so obtained, were then infused with varying vo...
Clean, benign and economical energy harvesting is envisioned to mitigate the global climate change – originated from the burning of fossil fuels – addressing both the energy crises and environmental issues. In this work, charge transport mechanism and the dynamics of photocurrent generation in thin films of CZTS nanocrystals is studied. A liquid ph...
AISI 1045 medium carbon steel sheets having 10 mm thickness were subjected to the shielded metal arc welding process with three, five, and seven passes. The variations in the microstructure due to multiple thermal cycles in the heat-affected zone (HAZ), base metal (BM), and fusion zone (FZ) have been investigated and correlated with measured mechan...
Natural soil (NS)-based geopolymers (GPs) have shown promise as environmentally friendly construction materials. The production of ordinary Portland cement is known to release significant amounts of greenhouse gas (CO2) into the atmosphere. The main objective of this work is to synthesize a geopolymer (GP) from an uncommon aluminosilicate-based NS...
Clinical applications of bio-absorbable magnesium (Mg) and its alloys can be enhanced by increasing their corrosion resistance, using surface modification and functionality. In this study, we synthesized graphene oxide (GO) through improved Hummers’ method and deposited it on biodegradable AZ31B Mg alloy for further characterization. Different susp...
Hydrogels can provide instant relief to pain and facilitate the fast recovery of wounds. Currently, the incorporation of medicinal herbs/plants in polymer matrix is being investigated due to their anti-bacterial and wound healing properties. Herein, we investigated the novel combination of chitosan (CS) and chondroitin sulfate (CHI) to synthesize h...
Hydrogels can provide instant relief to pain and facilitate the fast recovery of wounds. Currently the incorporation of medicinal herbs/plants in polymer matrix is being investigated due to their anti-bacterial and wound healing properties. Herein, we investigated the novel combination of chitosan (CS), chondroitin sulfate (CHI) and garlic (Gar) to...
Implants are used to replace damaged biological structures in human body. Although stainless steel (SS) is a well-known implant material, corrosion of SS implants leads to the release of toxic metallic ions, which produce harmful effects in human body. To prevent material degradation and its harmful repercussions, these implanted materials are subj...
Citation: Batool, S.A.; Liaquat, U.; Channa, I.A.; Gilani, S.J.; Makhdoom, M.A.; Yasir, M.; Ashfaq, J.; Jumah, M.N.b.; Rehman, M.A.u. Development and Characterization of Zein/Ag-Sr Doped Mesoporous Bioactive Glass Nanoparticles Coatings for Biomedical Applications.
Commercially pure titanium (Ti) is widely used in bio-implants due to its high corrosion resistance. However, Ti exhibits marginally low mechanical and tribological properties, which limit its applications in some orthopedic implants. In this work, the Ti samples were subjected to ultrasonic surface mechanical attrition treatment (SMAT) for various...
Citation: Ahmed, F.; Zain-ul-abdein, M.; Channa, I.A.; Yaseen, M.K.; Gilani, S.J.; Makhdoom, M.A.; Mansoor, M.; Shahzad, U.; Jumah, M.N.b. Effect of Ultrasonic Surface Mechanical Attrition Treatment-Induced Nanograins on the Mechanical Properties and Biocompatibility of Pure Titanium. Materials 2022, 15, 5097.
Implants are used to replace damaged biological structures in human body. Although stain-less-steel (SS) is a well-known implant material, corrosion of SS implants led to the release toxic metallic ions which produce harmful effects in human body. To prevent material degradation and its harmful repercussions, these implanted materials are subjected...
The majority of food packaging materials are petroleum-based polymers, which are neither easily recyclable nor ecologically friendly. Packaging films should preferably be transparent, light in weight, and easy to process, as well as mechanically flexible, and they should meet the criteria for food encapsulation. In this study, poly (vinyl alcohol)...
With the increasing applications of nickel in industrial homogeneous catalysis, coatings, and batteries a large amount can be recycled from waste orthodontic implants that contain ∼ 10% nickel. This research has reported a cost-effective, low temperature, and environmentally friendly route for recovering nickel from the waste orthodontic implants u...
Silica is one of the most efficient gas barrier materials, and hence is widely used as an encapsulating material for electronic devices. In general, the processing of silica is carried out at high temperatures, i.e., around 1000 °C. Recently, processing of silica has been carried out from a polymer called Perhydropolysilazane (PHPS). The PHPS react...
Cost-effective, clean, highly transparent, and flexible as well as a coatable packaging
material is envisioned to solve or at least mitigate quality preservation issues of organic materials, originating from moisture interaction under ambient conditions. Liquid phase processing of packaging coatings using nano-clay and polyvinyl alcohol (PVOH) has...
A novel method of producing silicon nanocrystals (Si-NCs) having an indispensable oxide free surface is described. Construction of a cost-effective, robust & safe chemical laboratory setup is presented for the wet chemical etching of silicon oxide shell from Si-NCs using hydrofluoric acid (HF) solution followed by separation over a membrane filter...
The classification of tourism attractions is becoming a more well admirable research trend. Various techniques have been taken on board to classify tourism attractions to provide information to the users based on their preferences. This study provides an in-depth insight into the entropic distance-based classification approach for the
prediction of...
The classification of tourism attractions is becoming a more well admirable research trend. Various techniques have been taken on board to classify tourism attractions to provide information to the users based on their preferences. This study provides an in-depth insight into the entropic distance-based classification approach for the prediction of...
Thick-films of functionalized silicon nanocrystals with different thicknesses have been analysed in a purposed device architecture at room temperature. Commercially prepared silicon nanocrystals with a mean diameter of 60 nm have been utilized with a pre-treatment process followed by functionalization. Detail analysis of current density–voltage cha...
Polymer matrix composites are used in automobile, structure and aerospace industries due to their light weight and high strength. The present research has an aim to reinforce locally developed silica nanoparticles and glass fibers in unsaturated polyester to produce polymer-based hybrid composites. Composites were synthesized by hand lay-up method...
![Figure 2 Ray Diagram of Experimental setup Set-up [8].](profile/Tahir-Ahmad-7/publication/305390773/figure/fig1/AS:578624299909120@1514966191433/Ray-Diagram-of-Experimental-setup-Set-up-8_Q320.jpg)
Laser is one of advanced surface processing techniques by use of which improved wear and corrosion resistance can be achieved without any modification in the bulk material. Current research involves exposure of AA2024-T3 sheet samples having dimensions of (20x20x2 mm3) to laser (InGaN diode laser of 532 nm wavelength). One sample was left unexposed...
Shielded metal arc welding was applied to AISI 1045 medium carbon steel. The microstructural changes and electrochemical corrosion behavior of the heat-affected zone (HAZ), base metal (BM), and weld zone (WZ) were investigated. The effect of welding passes on microstructural changes of BM, HAZ, and WZ were elucidated using optical microscopy, poten...
Questions
Questions (9)
During the hydrosilylation process, silicon nano-particles get polymerized and it is very difficult to process further. Is there any suggestion to avoid polymerization.
I am using Freeze-pump-thaw cycle to remove oxygen and moisture from the solvents. Can anyone tell me how to measure the oxygen and moisture level in treated solvents?
From the figure 1, the critical frequency is the highest point on the curve and from the figure 2 it is the point where the conductivity of the system changes from frequency independent phase (DC conductivity) to frequency dependent phase (AC conductivity). I just want to understand the meaning of critical frequency on the basis of these two graphs.
As per my understanding if I start with the figure 2 then it is quite easier to understand the meaning of critical frequency. According to this, the highlighted portion of the graph consists of very low frequency which is analogous to DC current (zero frequency).
Now if we replicate this concept to the figure 1 then while reaching the highest point of the curve (highlighted portion) we have to increase the frequency by many folds and which I guess will NOT definitely be analogous to DC current (zero frequency). I can support to my assumption on the basis of the fact that while reaching to the highest point of the curve there is always some capacitance generated in the system and a capacitance cannot be due to DC current.
Therefore I think that the critical frequency on the figure 1 should be far below as shown by figure 3.
I know, I am understanding something wrong. Can anyone help me to understand the basic theoretical knowledge in this regard?
Please reply me in simple plain words and not circumlocutory.
Charge transport in disordered media is discussed by many authors. Again in AC and DC chrage transport mechanism, researhcers have used these term "universality" I have read many papers but could not get this term. What is the actual menaing of this word "AC universality". Please have a look in the following papers:
I have measured two samples with different allotropic forms of austenite by XRD but got peaks of austenite at the same positions (indeed it would be) but the intensities varies considerably by appearance of different forms of austenite due to heat treatment. Now my question is, does anybody can help me about the literature research that which peak can be attributed to a particular phase?
As per available literature, amorphous structure of silicon is unstable and can be converted to crystalline by annealing at low temperature e.g. 100 C for 10 minutes but the reverse activity could not found in literature.
I am intended to make the crystalline structure of silicon (e.g wafer) to amorphous. Can anyone guide me or give me a idea to change it ?
