Shape analysis of crystalline nanoparticles with superspherical approximation having physical meanings

2015 Fiscal Year Final Research Report

• Project/Area Number: 25390029
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanomaterials engineering
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: ONAKA Susumu 東京工業大学, 総合理工学研究科(研究院), 教授 (40194576)
• Co-Investigator(Kenkyū-buntansha): MIYAJIMA Yoji 東京工業大学, 総合理工学研究科, 助教 (80506254)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: ナノ粒子 / 析出物 / 平衡形状 / エネルギー論 / 超球

Outline of Final Research Achievements

Crystalline nanoparticles or nanoprecipitates in alloys often have near polyhedral shapes composed of low-index planes and round corners. Energy consideration discussing anisotropic properties such as anisotropic surface/interface energy densities could reveal physical reasons of such shapes. However, to discuss the validity of the energy consideration, it is efficient to derive algebraic formulas to reproduce the near polyhedral shapes. In the present study, various extended superspheres are formulated and measures to characterize the near polyhedral shapes are obtained.

Free Research Field

材料科学