Graphene

One of the sources that I chose to use in order to research this question is “Is graphene safe?” by David Bradley. This article was published by Materials Today in 2012. I chose this article because I wanted an article that used a substance that may be unconventional to help in the discussion of health related issues. Important information that I have found in the article is the explanation of what graphene really is. David Bradley states that it’s single layers of carbon that’s similar to the…

Background: Large bone defects and infections still represent a major challenge to orthopedic surgeons. Bone infection is a very serious condition resulting in patient suffering, financial burden, and sometimes fatalities. The main cause for bone infection is usually trauma, diabetes and biomaterial-related implant associated infections. Infection is a significant cause for implant failure, impaired functionality, and reduced lifetime of medical devices, resulting in high distress for the…

particular filter it is made to filter out gases, liquids, and solids from a variety of different elements and objects as well as cleaning any object you toss into it. The item's frame is powerful enough to do these jobs well because its frame is made of graphene which is the thinnest substance capable of conducting electricity and is very flexible and strong, it is extremely difficult to break this machine. This machine contains five systems, A pneumatic system,…

The progress of nanotechnology has encouraged scientists to continuously pursue new electrode materials for constructing an enhanced electrochemical platform for sensing. In this study, hydrothermally-assisted reduced graphene oxide (TRGO) was synthesized using an environment friendly reducing agent in optimum time to easily exfoliate coating solution and substitute on the microelectrode. Series connected distributed sensing electrodes were fabricated and patterned with TRGO added platinum…

order to ensure the safety of users of the Nachsicht device, it will go through a series of rigorous testing to assess its biocompatibility and ability to be sterilized. As the materials used in the Nachsicht, polymethyl-methacrylate (PMMA) and graphene, have been used in other biomedical applications, the host response to the device is highly predictable. Various options for sterilizing the device will be assessed. The tests will be performed in vitro and in vivo before proceeding to clinical…

successfully fabricated [9-11]. Besides, high surface-to-volume ratio, selective reactivity upon exposure to range of analytes, rapid response and recovery make MoS2 as a superior gas sensor with higher sensitivity and selectivity in comparison to graphene and other 2D materials [12-15]. It has been reported that the mechanically cleaved single and multilayer MoS2 based field effect transistors can be used as NO gas sensor with a detection limit of 0.8 ppm [16]. Flexible MoS2 TFT array on…

Chapter 2 (Cadmium) NG Ka Yan 2.1 Introduction Cadmium(Cd) is toxic which can affect human health at low levels, and it is a carcinogen. Cd cause cancer which is lung, kidney and prostate cancer. Cd leads cancer because of the oxidative stress. Oxidative stress involved the Cd-induced aberrant gene expression, apoptosis and inhibit the DNA damage repair. Besides, Cd trigger the reactive oxygen species (ROS) formations by producing cellular thiol redox imbalance, and that make intracellular…

Atomic Electronic Chip (APA) Science and technology, these two things go together like a polar bear and ice. One simply cannot exist without the other. With so much pressure on scientists and engineers to build better, more sophisticated technology, there is also a strong emphasis on size. Everyone wants so much more power and performance, but without the bulkiness that inevitably comes with it. Since the first commercially sold cell phone in 1983 (Seward, 2013), advancements in technology have…

properties, which are valuable for nanotechnology, electronics, optics and other fields of materials science and technology. Nanotubes are members of fullerene structural family. Nanotube’s walls are formed by one-atom thick sheet of carbon called Graphene. The combination of rolling angle and radius decides the nanotube’s properties. They have extraordinary thermal conductivity, mechanical, and electrical properties. There are two types of CNTs: Multi-walled carbon nanotubes (MWNTs) and…

Orbiting spacecraft need a safe, efficient, and cost-effective way of penetrating planetary atmospheres and landing without compromising the cargo or– more importantly– the passengers. In the case of planet Earth, orbiting vehicles generate a substantial amount of thermal energy upon re-entry into the atmosphere, and the management of that immense amount of heat is fundamental in providing a safe environment for the crew and instrumentation on board the vehicle. The design of an efficient and…