Boulogne François, Khodaparast Sepideh, Poulard Christophe, Stone Howard A
Department of Mechanical and Aerospace Engineering, Princeton University, 08544, Princeton, NJ, USA.
Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405, Orsay, France.
Eur Phys J E Soft Matter. 2017 Jun;40(6):64. doi: 10.1140/epje/i2017-11553-1. Epub 2017 Jun 22.
This work aims to identify common challenges in the preparation of the blister test devices designed for the measurement of the energy release rate for brittle thin films and to propose easy-to-implement solutions accordingly. To this end, we provide a step-by-step guide for fabricating a blister test device comprised of thin polystyrene films adhered to glass substrates. Thin films are first transferred from donor substrates to an air-water interface, which is then used as a platform to locate them on a receiver substrate. We embed a microchannel at the back of the device to evacuate the air trapped in the opening, through which the pressure is applied. We quantify the height and the radius of the blister to estimate the adhesion energy using the available expressions correlating the normal force and the moment with the shape of the blister. The present blister test provided an adhesion energy per unit area of G = 18±2 mJ/m^2 for polystyrene on glass, which is in good agreement with the measurement of G = 14±2 mJ/m^2 found in our independent cleavage test.
这项工作旨在识别在制备用于测量脆性薄膜能量释放率的泡罩测试装置时的常见挑战，并据此提出易于实施的解决方案。为此，我们提供了一个逐步指南，用于制造由粘附在玻璃基板上的聚苯乙烯薄膜组成的泡罩测试装置。首先将薄膜从供体基板转移到空气-水界面，然后将该界面用作将它们定位在接收基板上的平台。我们在装置背面嵌入一个微通道，以排出被困在开口中的空气，通过该开口施加压力。我们量化泡罩的高度和半径，以使用将法向力和力矩与泡罩形状相关联的现有表达式来估计粘附能。对于玻璃上的聚苯乙烯，当前的泡罩测试提供了每单位面积G = 18±2 mJ/m²的粘附能，这与我们在独立的劈裂测试中测得的G = 14±2 mJ/m²非常吻合。
