Graphene

Child of Immigrants My grandfather likes to tell the story of how he came to this country. Supposedly, he arrived in New York with an engineering degree, a portfolio, and $8 in his pocket. He stayed with a friend and walked New York, using his degree until he was able to send for his wife and daughter in India. When the family was finally together, they moved everywhere in the U.S., eventually gaining a second child, a son, and both children grew to gain degrees in a land of opportunity. My…

Electrochemical Performance. To evaluate the electrochemical behaviors of the highly open framework of the as synthesized LTH on nickel foam electrodes NCA-L-@NF, NCA-L@G-NF and NCA-L@ BG-NF with three different feeding mole ratios , which is the best morphological foundation for fast redox reaction and charge accumulation, its potential application in high-performance supercapacitor has been investigated by cyclic voltammetry (CV), galvanostatic charge-discharge and electrochemical impedance…

2.1. Na-ion Batteries (NIBs) Na-based batteries are not new. Back to the 1970s, Na-ion and Li-ion batteries were investigated in parallel.5,6 The investigation of Na-ion batteries significantly decreased after the success of commercial application of Li-ion batteries in the 1990s. Na-ion batteries have a very similar working principle as the Li-ion batteries. As shown in Figure 2.1, each electrochemical cell is basically composed of a positive electrode, a negative electrode, and a membrane…

1.0 Neural Tissue Engineering Nerve injury and loss are common clinical problems, that can cause significant affects to a patient’s overall quality of life: Whether within the Peripheral or Central Nervous Systems. Neural Engineering is a sub-discipline within Biomedical Engineering that utilizes engineering techniques to understand, repair, replace and even enhance the properties of the neural system. In the field of Neural Tissue Engineering, the practice has been greatly limited to the…

A catalyst layer is usually the slimmest layer in a PEM fuel cell; however this is an extremely complex component because of its porosity, several phases, and reactions (Spiegel 2008). An efficient catalyst layer should provide several functions at the same time; transporting the electron and the proton, supplying oxygen and hydrogen and water management. The structure and composition of the catalyst layer affects all these roles. Optimization of the catalyst layer can provide for all these…

The world needs a sustainable energy source, there are no two ways about it. In my opinion, with the current infrastructure of the United States, the only way the US can generate enough energy effectively and efficiently is by combining nuclear, hydroelectric, solar, wind, and biofuels. Nuclear can generate a solid baseline in which solar can add on to during the day when energy usage is near its highest. The rest of the sources can add onto what is being produced by nuclear and can then match…

Demonstrate the role of stents in Percutaneous Coronary Intervention (coronary angioplasty) Introduction The heart is a pump that circulates blood to the rest of the human body. It is positioned at the centre of the chest, just between the lungs. The network of blood vessels that branch over the surface of the heart are the coronary arteries. Figure 1 outlines the coronary arteries on the heart which supply the cardiac muscles with nutrients such as oxygen and glucose needed to survive [1].…

For example, by returning to being a high technology nation, leading the world in niche areas such as advanced materials (such as graphene) and nano research, the UK could achieve the SDSR commitment to “promoting our prosperity through supporting international industry.” Collaboration with India’s industrial capacity could be a mutually beneficial Defence relationship in the development…

The next morning on that brilliant, lucid Sunday in Mohawk Park, Surina watched as Neilan Trahern arranged the chairs neatly in front of the globe fountain in preparation for the welcoming ceremony on Monday. Indeed, the weekly welcoming ceremonies kept the General Assembly Hall staff busy every Monday and Tuesday. Stefan raced up the steps as soon as he glimpsed Surina waiting by a Doric column in the shade of the portico. After entering the building, they went down a long corridor to the…

In recent years, modern Li-ion batteries (LIBs) have become ubiquitous power source for a variety of applications such as laptops, mobile phone, and digital camera to electric vehicles, owing to their high power density, high energy density, and long cycle life.1–3 However, there are still many critical challenge to increasing the energy, power density, and improved cycling stability.4–6 In particular, selecting noble electrode materials is the hottest topics in the LIB field. Among them, bulk…