Electrospinning Essay

Electro Inc. is fast developing company which strive to build a high tech wonder company image, it also has clear market segmentation and specific strategies to penetrate this segment. However, in recent report, the company’s financial statement indicates that the company experience financial difficulties at this moment. Some managers believe that this difficulty is largely due to two projects – Series A and Mercury. In this case analysis I will examine these two projects and make some recommendations for the company’s management as a whole.

The use of nano-materials and extreme precision micro-engineering has the potential for great improvement in the world of electronics and information technology by providing smaller, faster, and more powerful computers and this has been at the forefront of the nanotechnology commercialization . Great examples of how nanotechnology is currently being used in these fields are products such as processors, data storage, and memory components made with nano-materials, TVs, monitors and even smartphone screens that use organic light-emitting diodes (OLED), and waterproof electronics such as smartphones due to the application of nano-coatings

Over the past decades, nanometre-sized or known as microcapsules have been benefited the approach of Layer-by-Layer(LbL) technique due to the ability of tailoring their properties(e.g., size , shape, colloidal stability, surface-functionality, composition) that are biocompatible and biodegradable.1-3,10They are broadly used in many applications including food technologies, cosmetics, textiles industry and pharmaceuticals. The LBL assembly of multilayers are fundamentally built up by the alternating deposition of oppositely charged polyelectrolytes onto a sacrificial template such that the charge oscillates between positive and negative with each layer.1,4 The establishment of nanocoatings using LbL assembly method distinguishes itself in its intelligibility compared to the more conventional method. The

1. Using the information provided in the Introduction and your observations from Part 1, hypothesize as to the type of electrolyte the following solutions would be. Justify the hypothesis from a chemical standpoint.

The inclusion of nanoparticles into the biopolymer matrix has the dual objective of improving the mechanical properties as well as of incorporating nanotopographic features that mimic the nanostructure of natural tissue (7, 88-91)., the role of the scaffolds is being extended from being a mere mechanical support to include intelligent surfaces capable of providing both chemical and physical signals to guide cell attachment and spreading, possibly influencing also cell differentiation (92) (see also Figure

Many molecules, particularly peptides and polypeptides are physically embedded in polymers to create a complex network of interconnecting pores through which the drug could subsequently diffuse. The pore structure and polymer composition is controlled in order to design systems that release the drug at nearly any rate and for nearly

400W sonicated pectin had small molecular weight pectin fractions compared to 200W pectin, which could have enhanced its transportation into the cells, hence higher concentration of 400W sonicated pectin entered the cells leading to its higher activity than high molecular weight 200W treated pectin. Moreover, 400W sonicated pectin had higher galactose and arabinose content which are known to play a role in pectin induced cell death. It was reported that galactose rich pectin has higher biological activity than low galactose content pectin, for instance MCP is rich in galactose and galacturonic acid which are attributed to its activity [16,42]. Measuring the release of the intracellular enzyme lactate dehydrogenase (LDH) enzyme by cells after exposure to a compound is a reliable measure of compounds cytotoxicity to

The goal of nanotechnology is to make nanostructures or nano arrays with special properties, which do not exist in their bulk or single particle types. Oxide nanoparticles can present unique physical and chemical properties, because of their limited size and a high density in their corner or edge surface sites (Fernandez-Garcia & Rodriguez 2009; Bhattacharjee et al. 2011).

into p-nitrophenylate, a yellow colored compound. The quantity of p-nitrophenylate was evaluated by measuring the absorbance at 405 nm. As a result, the percentage of cell attached on the LBL film can be further assayed. The viability of human fibroblast cells seeded on COL/TA, COL/PSS and COL/HEP film after 22 h is shown in Figure 4. Tissue culture polystyrene plate (TCPS) was used as control. Phosphatase activity on COL/TA films is pretty similar than on TCPS. We can assume that the number of cells is therefore similar, showing no obvious cytotoxicity of this surface. It is shown that the COL/TA film has the highest activity of phosphatases (0.380 ± 0.016) compared with COL/PSS and COL/HEP films. Also, it can be found that COL/HEP film (0.235 ± 0.011) has higher phosphatases activity than COL/PSS film (0.140 ± 0.012). Related to these observations, we can assume that COL/PSS and COL/HEP show, to some extent, cytotoxicity. Note, the different polyelectrolyte used for the outer layer may influence the cell viability.

Another way of using electroporation to introduce foreign DNA is through the use of cell lines. For this experiment, cell lines are used to grow mammalian cells in vitro, which can then be introduced into the model. The advantage to using this method is that standard transient expression assay can be used to easily ensure the introduction of the foreign gene into the cells before they are introduced to the model. However, the downside to using this method is that it takes much longer and is a more labor-oriented process than the proposed experiment, (Potter).

The PCL/Poly membrane by electrospinning the model proposed may not have demonstrated effective performance for therapy guided bone regeneration when used alone. However, improvements as standardization in its production or as their physical structure, could take it to be studied as a biomimetic scaffold or as a carrier of other substances that promote guided bone

Neuromuscular electrostimulation is a popular way to relieve pain and rejuvenate sore muscles. Neuromuscular electrostimulation is the elicitation of muscle contraction using electrical impulses. In sports medicine, neuromuscular electrostimulation has been used for muscle strengthening, maintenance of muscle mass and strength during periods of prolonged immobilization, selective muscle retraining, and the control of edema. But what will the effects be of neuromuscular electrostimulation and plyometric training on the vertical jump height of teenage athletes? Will the vertical jump height increase, decrease, or stay the same after an eight-week period of using neuromuscular electrostimulation to rejuvenate and strengthen muscles after plyometric training sessions.

Electrospinning uses an electric field to control the formation and deposition of polymeric fibers onto the targeted surface or substrate [181-183]. In this method, a polymeric solution is injected with a specific voltage that generates a potential difference between the polymeric solution and the targeted substrate. This lead to the ejection of the polymeric fluid from a tip of the capillary or a spinneret when the electrical charges overcome the surface tension of the fluid. As the solvent evaporates, fibers with diameters ranging from several microns to several hundred nanometers can be formed [184]. The diameter of the fibers can be regulated by modifying the flow rate and concentration of the polymer, and altering the distance

Electrotherapy is a range of beauty treatments that use electrical currents passed through the skin to produce several therapeutic effects. In this report I have researched and written

Breast implant with nano ‘bed of- nails deter cancer cells. This technology is an implant that appears to deter breast cancer cells growth. It is made from a common polymer that is the first to modified at the nanoscale. It has nanoscale surface that impedes cancerous cells from gathering the nutrients they need to thrive because of the lack of blood-vessel. The implant attracts healthy breast cells formation instead. Thomas Webster, associate professor, created a breast implant with bed of- nails surface at the nanoscale that deters cancer cells from dwelling and thriving. It’s a surface that’s hospitable to healthy breast cells and less so for cancerous breast cells. The bed of- nails inside the surface of the implant prevents cancerous cells