Nanoparticles are materials that are confined to the nanoscale in all three dimensions. Engineered nanoparticles play an important role in nanotechnology. The specific properties of nanoparticles is defined by particle size, chemical composition, crystal
Nanomaterials are synthesized through bottom-up or top-down methods. Bottom-up methods involve building nanoparticles from atomic levels and include techniques such as sol-gel, sedimentation, reduction, green synthesis, biochemical synthesis, spinning, pyrolysis, atomic layer deposition, molecular self-asse...
Although "traditional" solid, uniform nanoparticles are still the most frequently reported structures, new generations of nanoparticles have been constantly emerging over the last several decades. The outcome of this nano-art extends beyond nanomaterials with alternative compositions and/or morphologies. ...
Bioplastics can also be made from polysaccharides like chitosan and alginate. Chitosan can be dissolved in light acidic environments, which makes it suitable for processing into films through the solution casting method. Recent research has blended chitosan with plasticizers, nanoparticles, and other bio...
7.3. Polymer Nanoparticles Another type of particles that draw large attention is polymer nanoparticles [44]. These types of nanoparticles (Figure 13) are easily made-mostly from biodegradable polymers and can increase the stability and time of circulation. Moreover, in addition of being non toxic...
Best of all, there are no additional steps or ingredients which need to be involved in order to ensure the decomposition of the polymer. Instead, it will react with sunlight, air and water to naturally degrade, meaning that it can break down easily in real-world situations with minimal imp...
As small as a nanometer is, it's still large compared to the atomic scale. An atom has a diameter of about 0.1 nm. An atom's nucleus is much smaller -- about 0.00001 nm. Atoms are the building blocks for all matter in our universe. You and everything around you are made of ...
The new coating has two important components.One: negatively charged silica nanoparticles—these are basically tiny particles of glass.And two: a positively charged polymer—which, you already know, a polymer is a chemical compound.These're layered over each other…the polymer, then the silica nan...
NanoparticlesBentoniteWater-based drilling fluidsNano-based drilling fluidsRheologyYield stressHigh temperatureClay suspensions present complex microstructures in different environments and deep understanding of such microstructures is crucial to control their flow properties. Their rheological profile is closely ...
Among metal nanomaterials, gold nanoparticles (AuNPs) and plati- num nanoparticles (PtNPs) are most widely used in electrochemical immunosensors because of their excellent performance and excellent conductivity14,15. Additionally, G has been functionalized and adsorbed on chitosan (Chi) through π–...