TEM combining with the SAED is favorable compare with XRD, which not only provides more accurate aspect ratio results with standard deviation values but also requires very small amounts of sample. The 7.36 ± 0.20 and 0.39 ± 0.02 aspect ratio (c/a) of ZnO nanorods and nanosheets could be obtained through the integration of the (100) and (002) diffraction rings in selected area electron diffraction (SAED). The results indicate that ZnO nanorods and nanosheets display rod-like and orthohexagnal morphology, which mainly encapsulated with planes, respectively. Herein, ZnO nanorod and nanosheet featured with one- and two-dimensional morphology were selected as model materials, which were prepared by the hydrothermal method and statistically characterized by transmission electron microscopy (TEM). However, the widely adopted techniques such as XRD is incapable to precise identify the aspect ratio of low-dimensional nanomaterials, not even to quantify the morphological uniformity with statistical deviation value. Thus, accurate identification of the structure and morphology is the basis to correlate to the performance. Nanomaterials with low-dimensional morphology display unique properties in catalysis and related fields, which are highly dependent on the structure and aspect ratio.
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A hero of many battles, quests and tournaments, and famed as a nearly unrivalled swordsman and jouster, Lancelot becomes the lord of the castle Joyous Gard and personal champion of Arthur's wife, Queen Guinevere, despite suffering from frequent and sometimes prolonged fits of madness. In the French-inspired Arthurian chivalric romance tradition, Lancelot is an orphaned son of King Ban of the lost kingdom of Benoic, raised in a fairy realm by the Lady of the Lake. Lancelot du Lac (French for Lancelot of the Lake), also written as Launcelot and other variants (such as early German Lanzelet, early French Lanselos, early Welsh Lanslod Lak, Italian Lancillotto, Spanish Lanzarote del Lago, and Welsh Lawnslot y Llyn), is a character in some versions of Arthurian legend where he is typically depicted as King Arthur's close companion and one of the greatest Knights of the Round Table. Ban, Elaine of Benoic, Lady of the Lake, Hector de Maris |
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