Figure 1 | Scientific Reports

Figure 1

From: Light-driven complex 3D shape morphing of glassy polymers by resolving spatio-temporal stress confliction

Figure 1

Design of the radial patterns and facets on bi-axially pre-strained PS films. (a) Global shrinkage of the pre-strained PS sheet by heat treatment in an oven at 130 °C (scale bar: 2 cm). (b) Polarization map of bi-axially pre-strained PS film with parallel and crossed polarizers by optical microscope. (c) Schematic illustration of the radial patterns (the number of radial patterns from 1 to 12) and circular facet design (the diameter of circular facets from 0 to 2 cm). (d) Exposure of NIR light to 2D patterns for 20 s on the pre-heated hotplate at 90 °C. The graph indicates the temperature range of the center of the pre-heated substrate.

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