Laboratory of Bio-inspired & Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, I-38123 Trento, Italy.
Nanotechnology. 2018 Sep 28;29(39):395707. doi: 10.1088/1361-6528/aacf50. Epub 2018 Jun 27.
Standard tensile tests of materials are usually performed on freestanding specimens. However, such requirement is difficult to implement when the materials of interest are of nanoscopic dimensions due to problems related to their handling and manipulation. In the present paper, a new device is presented for tensile testing of thin nanomaterials, which allows tests to be carried out on specimens initially deposited onto a macroscopic pre-notched substrate. On loading, however, no substrate effects are introduced, allowing the films to be freely stretched. The results obtained from a variety of thin metal or polymeric films are very promising for the further development of this technique as a standard method for nanomaterial mechanical testing.
标准的材料拉伸试验通常在独立的样本上进行。然而，当感兴趣的材料具有纳米级尺寸时，由于与处理和操作相关的问题，这种要求很难实现。在本文中，提出了一种用于拉伸测试纳米材料的新设备，该设备允许在最初沉积在宏观预切口基底上的样品上进行测试。然而，在加载时，不会引入基底效应，从而可以自由拉伸薄膜。从各种薄金属或聚合物薄膜获得的结果非常有希望进一步发展该技术，使其成为纳米材料机械测试的标准方法。
