4. Conclusion In this work, a facile shock wave treatment for the synthesis of graphene and NG was developed which provides a simple, energy-saving and novel synthesis route. The shock synthesized graphene/multi-layer graphene and NG were evidenced by TEM, 19 Raman, XRD, and XPS measurements. The shock pressure and temperature are two important factors in the synthesis of graphene by affecting the formation rate of carbon. When the shock pressure and temperature are too low, the shock waves can not generate sufficient energy to produce carbon phase.
Nanobots mainly consists of two words known as the Nano and Bots. Nano is the prefix which is known as dwarf known as extremely small. It may be measured in the word nanosecond ,which is one billionth of a second. The word bot here is the short form of the robots. Robots can be very useful in the situations where it is dangerous for the human being to work.
There are usually 2 or 3 charge units in the fullerene cage, but this is difficult to determine accurately. Due to its design, metallofullerenes are more stable than normal empty fullerenes up to very high temperatures and have uses in medicine. A metallofullerene with gadolinium is used as a contrast agent in magnetic resonance imaging scans and other metallofullerenes may be able to transport radioactive ions to cancerous tissue, providing a
The deflection depends on how many electrons were removed in the first stage. The higher the charge of ion, the more it is deflected. In other words, the lighter they are the more they are deflected. The ion passing through the machine is detected electrically. The size of the magnetic field is related to the mass of each ion being detected as the magnetic field is used to bind the ions to the detectors (Laboratory training courses on HPLC, GC, AAS, lab safety,
For the last 5 decades, electronics coupled with organic chemistry has been an area of great research interest, especially in physics and chemistry. Until a few years ago, this topic was thought to have no practical approach and was believed to be just research-oriented. Modification of chemical structures so that they can in a way enhance the properties of these when used for electronic applications- especially as a thin film has gained major impetus. It was always thought that organics would soon replace the semiconductors in the near future; given that they could perform the same functions and applications as the semiconductors. However, their stability and efficiency posed a great problem then.
The DSC analysis is depicted in a graph of heat flux as a dependent of time or temperature. The DSC instrument will interpret exothermic reactions by producing positive or negative peaks, depending on the manufacturing technology. DSC is a popular technique for phase diagram studies of samples. The most common theoretical DSC curves are those observed for fusion, crystallization and glass transition temperatures. For instance, at increased temperature, amorphous semicrystalline solid molecules will become less viscous and have enough freedom of motion to rearrange the molecular structure spontaneously into crystalline form.
The results proved that atomic space was quantised since only the readings for the magnetic dipole moment in the arbitrary z direction only took certain discrete values. The values of the dipole moment were not the same as those predicted by equation (5). One thought was that the discrepancy was due to the magnetic dipole of nucleons, but since the values were of the order of the Bohr magneton which is about 2000 times more than those expected from the nucleus the thought was ruled
It can be any state, circumstance, opportunity, or means specially favorable to success, interest, or any desired end. Some of the important advantages of nanotechnology are : (1) Nanomaterials are more efficient materials with very useful characteristics in terms of strength, lightness, ductility, extremely small size, thermal and electrical conductibility, and water repellency. (2) Usage of nanomaterials as raw material, machine or equipment reduces the size. (3) Nanotechnology ideas can be applied and implemented to solve almost any problem ever exist. (4) Nanotechnology provides a mean to decrease the use of energy and other resources.
Morphology: The morphological aspects which have to be taken into account before characterising the nanoparticles are the flatness, spherical nature and the aspect ratio i.e the ratio of the length and the breadth of the particle. Based on the shape of the nanoparticles, they have been given different names like nanospheres, nanoreefs, nanotubules, nanoboxes etc (Choy et al, 2004; Agam et al, 2007; Kralj, 2015;). Based on the aspect ratio, the nanoparticles are classified as high aspect ratio NP(HARN) and low aspect ratio NP(LARN). HARN are nanotubes, nanotubules, nanowires etc. LARN includes spherical, oval or ovoid, helical, prism and
This unzipping results in graphene ‘nanoribbons’, with ribbon widths dictated by the diameter of the tubes. Graphene nanoribbons are considered as quasi one dimensional material, and have different properties depending on their width and edge type (armchair/zigzag). Carbon nanotube unzipping occurs via C–C bond fission which is often initiated at defect sites, leading to irregular cutting. Recently the synthesis of well regulated nanoribbons has been demonstrated via unzipping of flattened carbon nanotubes, where attack occurs preferentially along the bent edges (Figure2.5). Producing graphene from carbon nanotubes is set to raise interesting questions as graphene is often seen as a replacement or alternative to