کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
591290 | 1453612 | 2006 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nanomechanical measurements with AFM in the elastic limit Nanomechanical measurements with AFM in the elastic limit](/preview/png/591290.png)
With increasing interest in nanoscience and nanotechnology, the fundamental underpinnings of what makes materials strong and durable are under critical investigation. Recent findings suggest that when materials are reduced in extent to nanoscopic proportions, they exhibit enhanced strength, specifically in the form of higher moduli than are measured on macroscopic objects of the same composition. Force-deformation behavior of nanostructures subjected to concentrated loads, such as with atomic force microscopy (AFM), can yield detailed information and insight about their local mechanical properties. We review and evaluate the effectiveness of deformation and indentation tests used in determining the elastic modulus of nanobeams, nanosprings, thin films, biological samples, dendrimers, and fluid droplets. Obstacles yet remain in the determination of absolute, quantitative modulus data at the nanoscale. In spite of basic limitations, recent developments in advanced nanomechanical techniques will facilitate improvement in our understanding of material strength and aging from molecules and colloids to the macroscale.
Journal: Advances in Colloid and Interface Science - Volume 120, Issues 1–3, 30 June 2006, Pages 57–67