Materials become insensitive to flaws at nanoscale: Lessons from nature. Proc. Natl. Acad. Sci. USA 100, 5597–5600 (2003). Article ADS CAS PubMed PubMed Central Google Scholar Fratzl, P., Burgert, I. & Gupta, H. S. On the role of interface polymers for the mechanics of natural ...
The flexural stiffness and strength of 3D printed specimens loaded in various directions were lowered when recycled sand was used. The specimens’ flexural strength and fracture energy rose significantly from 7 to 14 days after curing but gains from 14 to 28 days were insignificant. The negative ...
然后右击你的家,选择"Directions From Here",再右击你要去的地方,选择"Directions To Here"。 在Google Earth计算路线前,它会将地图缩小给你一个旅程的全貌,就像MapQuest或者Google Maps那样。现在找到搜索窗口底部的那个"play"按钮,如下图所示: (, 下载次数: 31) 点击那个按钮,Google Earth就会俯视下来,然后带你...
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This is facilitated by terminating the mapping area in all directions with tapered saw-tooth patterned foam microwave absorbers. Excitation of the chamber is achieved by an x-band rectangular waveguide adapter, at its phase centre, a line-source-equivalence can be assumed that acts as the ...
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6 verify that the thermal metadevices maintain their thermal functionalities well when heat flow is imposed from more different directions, like ±45°. From Fig. 3 and Supplementary Fig. 6, we can see that the proposed freeform thermal metamaterials maintain omnidirectional thermal concentrating, ...
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Diffractive optical elements (DOEs) are used to shape the wavefront of incident light. This can be used to generate practically any pattern of interest, albeit with varying efficiency. A fundamental challenge associated with DOEs comes from the nanoscale
In addition, a 5 mm piece was eliminated from both sides of the cubes to attain a width of 50 mm. In order to obtain loading along D1, D2, and D3 directions, positions 1 and 4, 2 and 5, and 3 and 6 were used, respectively. The procedure was repeated to obtain a total of ...