Workshop: An International Workshop on Strength and Plasticity at Nanometer and Sub-Micron Scales; Braunwald, Switzerland; September 4-7, 2007

要求NSF资助为期三天的关于纳米和亚微米尺度对金属强度和塑性的影响的研讨会。该研讨会将强调随着样品尺寸和/或微观结构尺度减小到亚微米甚至纳米尺度，塑性强度的急剧增加。这包括亚微米压缩样品的实验和计算研究，具有纳米尺度晶粒尺寸的大块样品，以及具有纳米尺度相的多层薄膜复合材料。所报道的现象不能用晶体或应变梯度塑性理论解释。因此，研讨会的目标是评估和批判性地评价这些观察结果以及相应的理论和计算方法，以理解它们。社会效益是国际性的，涉及材料/力学社区的初级和高级参与者，并扩展到纳米技术的开发者和用户。具体来说，这次研讨会提供了一个必要的论坛，在传统会议无法实现的范围内指导和推进国际研究界。申请的资金将允许美国最高水平的4名高级和4名初级（最近6年内获得博士学位）研究人员，加上3至4名有能力的研究生和/或代表性不足的个人。最多可容纳70名参与者。结果将通过研讨会主持人提供的书面摘要、基于网络的演示流和/或演示幻灯片的捕获，以及由研究生在其所在机构主持的研讨会讨论小组来传播。

NSF funding is requested for a three-day workshop on nanometer and sub-micrometer scale effects on strength and plasticity of metals. The workshop will highlight dramatic increases in plastic strength as sample size and/or microstructural scale decreases to sub-micron and even nanometer scales. This includes experimental and computational investigations of sub-micron compression samples, bulk samples with nanometer-scale grain size, and multilayer thin film composite materials with nanometer-scale phases. The reported phenomena are not explained by crystal or strain gradient plasticity theories. Thus, an objective of the workshop is to assess and critically evaluate these observations and the corresponding theories and computational approaches to understand them.The societal benefits are international in scope, involve both junior and senior participants in the materials/mechanics communities, and extend to nanotechnology developers and users. Specifically, this workshop provides a needed forum to guide and advance the international research community at a scope not possible in a traditional conference. The requested funding will enable US participation by 4 senior and 4 junior (Ph.D. received within the last 6 years) researchers of the highest caliber, plus 3 to 4 highly capable graduate students and/or under-represented individuals. Up to 70 participants will be accommodated. Results will be disseminated through written summaries provided by workshop moderators, web-based streaming of presentations and/or capture of presentation slides, and workshop discussion groups hosted by graduate students at their home institutions.