Plastic bag
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SMA (Nitinol)
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Comparison of elastic sponge, memory foam and shape memory foamFree energy
(different energy barrier between State A and State B) |
Elastic sponge and memory foam: shape change effect
Shape memory foam: shape memory effect Ref: Thermo/chemo-responsive shape memory effect in polymers: a sketch of working mechanisms, fundamentals and optimization, Journal of Polymer Research, Vol. 19, No. 9, 2012, 9952 Emma X BASF|生活节奏不被定义,慢回弹将你还给自己。
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Comparison of elastic, memory and shape memory insolesElastic insole and memory insole: shape change effect
Shape memory insole: shape memory effect |
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Environmental temperature dependent:
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Comparison of two elastic glasses frames:
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Refer to the following paper for WHYThermo/chemo-responsive shape memory effect in polymers: a sketch of working mechanisms, fundamentals and optimization, Journal of Polymer Research, Vol. 19, No. 9, 2012, 9952
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An introduction to shape memory materials |
Online version
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Shape memory materials |
Short version
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Stimulus-responsive shape memory materials: a review |
Long version (a summary of what I have done before 2012)
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(a) Original shape; (b) programmed shape; (c) after shape recovery
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Shaping tissue with shape memory materials, Advanced Drug Delivery Reviews, Vol. 65, 2013, 515-535
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Basic working mechanisms for the SME in polymeric materials(I) Dual-state mechanism (DSM);
(II) Dual-component mechanism (DCM); (III) Partial-transition mechanism (PTM). (a) Original sample at room temperature; (b) Upon heating and compressing; (c) After cooling and constraint removal; (d) After heating for shape recovery. Thermo/chemo-responsive shape memory effect in polymers: a sketch of working mechanisms, fundamentals and optimization, Journal of Polymer Research, Vol. 19, No. 9, 2012, 9952
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On the selection of shape memory alloys for actuators, Materials & Design, Vol. 23, 2002, pp11-19
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Characterization of shape memory performance |
Uniaxial tension/compression mode |
Ideally, we should use uniaxial tension/compression mode.
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Bending mode |
(ignore creeping/relaxation)
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Twisting mode |
(ignore creeping/relaxation)
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Thermo/chemo-responsive shape memory effect in polymers: a sketch of working mechanisms, fundamentals and optimization, Journal of Polymer Research, Vol. 19, No. 9, 2012, 9952
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- To enable the shape memory effect in materials.
- To design a material with the required shape memory function. - To optimize the shape memory performance. |