Eng's Notebook

🔥 ... Graphene oxide is one of the most exciting material in the field of nanotechnology. It is a derivative of graphene that consists of a single layer of carbon atoms with oxygen-containing functional groups such as hydroxyl, epoxy, and carboxyl groups. These functional groups make GO highly hydrophilic and dispersible in water. Due to its tunable surface properties, it can be applied in various fields, including water purification, energy storage, biomedicine, and flexible electronics. In this article, we’ll explore how graphene oxide is synthesized and its properties. Figure 01 : The structure of GO with functional groups How Is Graphene Oxide Synthesized? Graphene oxide is synthesized by oxidizing graphite and then exfoliating it into thin layers. The most widely used method for synthesizing graphene oxide is the Hummers method. This method is suitable for large-scale production because it produces a high yield of graphene oxide. In this method, first graphite pow...

🔥 ... Hi all! In this article, I will give you a brief introduction to our final-year research project.  The hard water problem is a major issue in Sri Lanka and around the world due to its health risks and unpleasant taste. What is hard water? Hard water is water that has a high concentration of dissolved minerals, mainly calcium (Ca²⁺) and magnesium (Mg²⁺) ions. These minerals come from natural sources, such as limestone or chalk, as water flows through them. Inadequate intakes of calcium have been associated with increased risks of osteoporosis, nephrolithiasis (kidney stones), colorectal cancer, hypertension and stroke, coronary artery disease, insulin resistance, and obesity. Also, there is a potential risk of CKDu (Chronic Kidney Disease of unknown etiology) by hardness. According to the analysis, 26.9% of well water was soft, 15.0% was moderately hard, 15.8% was hard, and 42.2% was very hard in Sri Lanka. Figure 01: Relationship between water hardness and n...

🔥 ... Hello! We’re Imesh Livinston and Manori Jayawardhana , two fourth-year students studying Materials Science and Engineering at the University of Moratuwa , the top engineering university in Sri Lanka. We’re super excited to welcome you to our very first article here on Eng's Notebook! So, what’s this site all about? In this space, we’re going to share our knowledge of Materials Science and Engineering with you. Our goal is to dive deep into the exciting world of materials science and talk about the projects we’ve worked on, the lessons we’ve learned, and how cool this field is. In this space, we’ll cover some basic materials science theories while also sharing our personal experiences and the projects we’ve been involved in so far. We believe it’s important to be honest with you, so we’ll be transparent about both our successes and failures because both are crucial for growth and learning 💡. Along with that, we’ll provide insights into our ongoing projects...