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【24h】 Failure Pressure of Bilayer Lipid Membranes

机译双层脂质膜的破坏压力

【摘要】The motion and growth of plants is the inspiration for a new biomimetic actuator that uses fluid transport across a bilayer lipid membrane (BLM) to create internal pressure and cause displacement in the actuator. In order for the actuator to be viable the BLM must be able to withstand this internal pressure without failing. In this study BLMs are formed over a porous polycarbonate substrate and a hydrostatic pressure is applied to the BLM and gradually increased until it fails. This test is performed over different pore sizes to measure the failure pressure of the BLM as a function of pore radius. A similar test is used for polymer films to compare the failure pressure trends of a BLM to conventional engineering materials. The polymer films and BLMs are modeled as a simply supported circular plate under uniform load, first with the assumption of small deflections and then with the assumption of large deflections. It was found that the large deflection model better represents the trend of failure pressure versus pore radius than the small deflection model.

【摘要机译】植物的运动和生长是新型仿生执行器的灵感,该执行器使用跨双层脂质膜(BLM)的流体传输来产生内部压力并引起执行器中的位移。为了使执行器可行,BLM必须能够承受内部压力而不会发生故障。在这项研究中,在多孔聚碳酸酯基材上形成BLM,并向BLM施加静水压力,然后逐渐增加静压力直至其失效。该测试在不同的孔径上进行,以测量BLM的破坏压力与孔径的关系。对聚合物薄膜使用了类似的测试,以比较BLM与常规工程材料的破坏压力趋势。聚合物薄膜和BLM在均匀载荷下被建模为简单支撑的圆形板,首先假定挠度小,然后假定挠度大。发现大挠度模型比小挠度模型更好地表示了破坏压力对孔隙半径的趋势。

【原文格式】PDF

机译 鼻腔结构;双层脂质膜(BLM);破坏压力;
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