This technique provides essentially the same type of information as HRTEM diffraction and RHEED. If films are sufficiently thick, more than a few tens of nanometers, x-ray diffraction (XRD) can be employed. Reflection high-energy electron diffraction (RHEED) provides another way of probing morphology, but because of the grazing incidence employed, it is particularly useful for very thin films. The character of the diffraction pattern discriminates between noncrystalline, micro- or nanocrystalline, polycrystalline, and single crystalline phases. In addition to providing direct imaging, cross-sectional HRTEM also provides a convenient route for obtaining diffraction data. There is also the possibility of changes in morphology during sample preparation, or under electron beam imaging. Two limitations to this approach are (i) the small amount of material that can be imaged, and (ii) the expense and complexity of sample preparation. The combination of bright field/dark field imaging is particularly useful in determining crystallite size distributions. Misra, in Encyclopedia of Materials: Science and Technology, 2001 (a) Morphology and microstructureĬross-sectional HRTEM imaging is an excellent technique for discriminating between non-, micro-, or nanocrystalline diphasic, and compact polycrystalline, and single crystalline phases ( Seiler et al. Further, with all other conditions being the same, this range of ethanol concentration results in the formation of smaller nanocapsules which have higher capacity for diverse medical applications. They verify the already advanced notion that the ethanol concentration in the range of 15–20% v/v is most effective in view of the IMC entrapment inside the capsules. The results from DLS measurements are presented in Fig. So, it was not quite clear whether there are nanostructures in the system or they are just too small to be detected through this type of experiments. This is important because generally through conventional turbidity experiments the respective cloud point has not been registered ( Michailova et al., 2010).
#Hrtem xsection of transistor series
A series of DLS experiments were performed with aqueous solutions of the copolymer with 2.7 mol% grafting density at 25 ☌ and 37 ☌.
#Hrtem xsection of transistor verification
The DLS experiments were focused on the verification of the hypothesis about the optimal concentration of the added ethanol in this particular drug delivery formulation.
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