Abstract
The proximity of interfaces and under-coordination therein plays a key role in the behavior of nanoscale systems. The stress state associated with defects is altered in small domains and further, configurational effects gain prominence. Interesting aspects come to the fore via the interplay of stresses, interfaces, and geometry. Diverse phenomena which elucidate this interconnectedness include the stabilization of the coherent state (precipitate), surface stress-driven lattice expansion in hollow shells and the alteration of the critical size for nucleation. Interesting outcomes of the study include 'depth sensitive lattice fringe imaging,’ 'liquid-like nucleation in nanoscale films' and 'Poisson effect-driven anomalous lattice expansion in metal nanoshells.’ The synergistic role of transmission electron microscopy and computational models in providing insights into these nanoscale phenomena is highlighted in this article.
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Acknowledgements
The authors acknowledge the contributions of group members: Dr. Suboohi Sherwani and Dr. Pooja Rani for their contributions to the work, on which this article is based. Further we would like to acknowledge our collaborators and co-authors: Prof. Raj Pala, Dr. Raghvendra Tiwari, Dr. B. Vishwanadh, Prof. Somnath Bhattacharyya, Prof. Sri Sivakumar, Dr Gargi Mishra, Mr. Deb De, Prof. Kantesh Balani, Dr. Kawsar Ali, and Dr. Ashok Arya.
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Subramaniam, A., Raghavendra, R.M., Iyer, G., Kumar, A. (2022). Interplay of Stresses, Interfaces, and Nanoscale Effects: TEM Investigations. In: Biswas, K., Sivakumar, S., Gurao, N. (eds) Electron Microscopy in Science and Engineering. IITK Directions, vol 6. Springer, Singapore. https://doi.org/10.1007/978-981-16-5101-4_10
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