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Cover Image, Volume 135, Issue 47
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47285
Subject(s) - cover (algebra) , hinge , planar , polymer , materials science , computer science , composite material , polymer science , computer graphics (images) , mechanical engineering , engineering
The displayed “open cube” object forms by heat‐folding a strained, planar, and a relatively thick poly(methyl methacrylate) (PMMA) sheet (6 mm in thickness). Melt pressing the sheet at ~ 100°C generates strain in the sample. A laser cutter ablates 3‐4 mm from the PMMA surface in specific regions in the polymer sheet thus generating “hinges”. Turning the sheet upside down and exposing it briefly to hot air (~300°C) causes the sheet to develop its final 3D shape. This paper by Jan Genzer and colleagues, showed that during heat treatment, the ablated regions in the film release the stored strain faster than the unmodified portions of the sheet and thus serve as “hinges” for sheet folding. DOI: 10.1002/app.46889 .