نتایج جستجو برای: double walled
تعداد نتایج: 254577 فیلتر نتایج به سال:
Our study indicates that it is possible to move single-stranded DNA (ssDNA) molecules into and out of double-walled carbon nanotubes by utilizing DC electric fields with different polarities.
We have succeeded in synthesizing vertically aligned doubled-walled carbon nanotube (DWNT) forests with heights of up to 2.2 mm by water-assisted chemical vapour deposition (CVD). We achieved 85% selectivity of DWNTs through a semi-empirical analysis of the relationships between the tube type and mean diameter and between the mean diameter and the film thickness of sputtered Fe, which was used ...
where di and dO are the inner tube and outer tube diameters, respectively. The diameter of the inner tube (di) and outer tube (dO) are estimated as 1.6 nm and 2.2 nm, respectively, from Raman spectroscopy. Here, t is the wall thickness attributed to each nanotube, assumed to be 0.33 nm, equal to the spacing between graphene layers. In addition, Graphite ρ is the density of the graphite, which i...
Measurements of the radial breathing modes from Raman Spectroscopy have been most useful in characterizing the diameters of single-wall carbon nanotubes (SWNT), where there is a simple monotonic relationship between frequency and diameter. Similar correlations have also been used to predict sizes for double and multiple wall nanotubes and for bundles of SWNT. However this can lead to significan...
Current materials used for adipose tissue reconstruction have critical shortcomings such as suboptimal volume retention, donor-site morbidity, and poor biocompatibility. The aim of this study was to examine a controlled delivery system of dexamethasone to generate stable adipose tissue when mixed with disaggregated human fat in an athymic mouse model for 6 months. The hypothesis that the contin...
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