地域社会の変貌と住民自治の模索

departmental bulletin pape

Observation of the Color-Suppressed Decay B̅ 0→D0π0

journal articl

《卒論報告》文学教育における「想像的な読み」の評価－「逆向き設計」論に着目して―

departmental bulletin pape

シンカク セイブツ ノ フクセイ カイシ リョウイキ ノ コウゾウ ト ヤクワリ

video/mp4講演者所属: 大阪大学大学院理学研究科生物科学専攻分子細胞生物学大講座教授vide

研究速報 : Non-linearity in Stress-Strain Relations of a wide Range of Geotechnical Engineering Materials : -Part1 Experimental results

departmental bulletin pape

Nanoindentation tests on diamond-machined silicon wafers

Nanoindentation tests were performed on ultraprecision diamond-turned silicon wafers and the results were compared with those of pristine silicon wafers. Remarkable differences were found between the two kinds of test results in terms of load-displacement characteristics and indent topologies. The machining-induced amorphous layer was found to have significantly higher microplasticity and lower hardness than pristine silicon. When machining silicon in the ductile mode, we are in essence always machining amorphous silicon left behind by the preceding tool pass; thus, it is the amorphous phase that dominates the machining performance. This work indicated the feasibility of detecting the presence and the mechanical properties of the machining-induced amorphous layers by nanoindentation.journal articl