Friedrich-Alexander-Universität erlangen - nrnberg (FAU)通用材料特性研究所现招收一名优秀博士候选人参加原位显微镜研究培训小组纳米级对象。
金属纳米结构的力学行为与它们的块体结构有很大的不同。纳米线、粒子或薄膜可以具有理论强度数量级的屈服应力和显著改善的弹性性能。在这个项目中，原子模拟将用于补充原位实验，以深入了解纳米尺度上的基本变形机制。该项目是GRK 1896“电子，x射线和扫描探针原位显微镜”研究培训小组的一部分，该小组为博士生提供全面，方法跨越和跨学科的培训，将尖端纳米表征工具应用于材料和设备开发。 For more information on the project see: http://www.grk1896.uni-erlangen.de
Highly qualified candidates with academic education in physics, materials science, mechanical engineering or related disciplines are invited to apply. Degrees such as M.Sc. or equivalent qualifications are required for PhD studies. The successful candidate will have a solid background in physical metallurgy and mechanical behavior of materials, as well as experience with numerical simulations (preferably Molecular Dynamics) and scientific programming. Excellent oral and written communication skills and the ability to work well in a dynamic and collaborative research environment are essential. The PhD positions are provided for up to three years and will be paid according to the regulations of the collective wage agreement of the civil service.
Please send your application (including a cover letter describing your research interests, curriculum vitae, scanned certificates and contact information of two references) to comp-mat-sci-jobs@ww.uni-erlangen.de and grk1896@ww.uni-erlangen.de
教授Gregory B. Thompson在阿拉巴马大学寻求与变形建模和氧化相关项目的博士后申请者在高温陶瓷系统中。合格的候选人将使用建模来解释和帮助指导实验研究。该博士后候选人将主要参与两个部分的项目:(1)模拟多相碳化物和氮化物材料的热变形模式和机制;(2)在这些相同系统中的氧化行为。候选人将成为团队的一员，将这些数据与分析显微镜表征联系起来，以阐明这些机制。理想的候选人应精通计算位错动力学，有限元建模或相关方法。 The candidate will have opportunities to interface and use a variety of state-of-the-art analytical instrumentation in conjunction with his/her modeling centric focus. This will provide for a multi-disciplinary post doctoral research experience.
The post doctoral fellows will be expected to actively publish their research as well as present their research at national and international meetings. The candidates will also assist in proposal writing and preparation. Professor Thompson’s research group collaborates with several national laboratory facilities including Sandia National Laboratories, Oak Ridge National Laboratory, and NASA Glenn Research Center as well as industrial partners. Previous students and post docs in his group have been able to travel and collaborate at these off-site facilities increasing their personal interaction in the field and research education. Successful candidates will be offered competitive stipends and health coverage.
The University of Alabama is located in Tuscaloosa, Alabama, which is approximately 60 miles southwest of Birmingham. The student body is approximately 33,000. Tuscaloosa offers a variety of shopping, restaurants and states parks in the vicinity. The University of Alabama’s College of Engineering was founded in 1831 and is the 5th oldest college of engineering in the country.
Interested applicants are encouraged to contact Professor Thompson:
Dr. Gregory Thompson
University of Alabama
Department of Metallurgical & Materials Engineering
301 7th Ave, 116 Houser Hall
Tuscaloosa, AL 35487-0202
205-348-1589
http://www.bama.ua.edu/~gthomps/
各位同事，
实验纳米力学是力学领域一个经常被讨论的话题，如李晓东、Julia Greer和蔡伟每月非常活跃的话题。万博manbetx平台
继续，我想提请您注意我们最近发表的一篇论文:
由Sang Ho Oh, Marc Legros, Daniel Kiener &Gerhard Dehm (http://www.nature.com/nmat/journal/v8/n2/abs/nmat2370.html).
我们首次报道了亚微米Al单晶的原位透射电镜拉伸测试，该测试能够直接了解亚微米晶体中源控制的位错塑性。单端光源发出的位错在能够倍增之前就从晶体中逸出。由于位错成核和损失率以每秒0.2个事件的速度平衡，在整个变形过程中，位错密度在应变速率约为10-4 s-1时保持统计恒定。然而，当应变速率突然增加到10-3 s-1时，由于形核速率大于损失率，导致位错密度显著增加。这一观察结果表明，亚微米晶体的变形是应变速率敏感的。
正如桑浩所说的(可能是我以前不认识的人):
一幅画胜过千言万语，但一部电影讲述了整个故事!
So have a look at our in-situ movies and strain rate results and let me know if you need additional information!
Best,
Daniel