"Polymers with shape memory have both a visible, current form and a stored, permanent form. Once the latter has been produced by conventional methods, the material is molded into a second, temporary form by skillful heating, deformation, and finally, cooling. The plastic maintains this shape until the permanent form is recalled by a predetermined external stimulus.
"The secret behind these clever materials lies in their molecular network structure, which contains meltable "switching segments." Raising the temperature activates the switching: the crystallized switching segments melt and the material resumes its original form."
The films were deposited by co-sputtering (using a Ni-Ti and a Ti target) in a chamber specially designed for in situ X-ray measurements, enabling an in-situ characterization by X-ray diffraction of the films during their growth. Intermediate structural states of the growing film have been identified, which cannot be seen/revealed ex-situ, because those states occurred only during the growth but were no longer detectable after deposition.
I have heard about shape memory polymers!
Do they exist?? What's the main compound of this polymers?
Caelsus 3 years ago
"Polymers with shape memory have both a visible, current form and a stored, permanent form. Once the latter has been produced by conventional methods, the material is molded into a second, temporary form by skillful heating, deformation, and finally, cooling. The plastic maintains this shape until the permanent form is recalled by a predetermined external stimulus.
VIMEIRO1 3 years ago
"The secret behind these clever materials lies in their molecular network structure, which contains meltable "switching segments." Raising the temperature activates the switching: the crystallized switching segments melt and the material resumes its original form."
VIMEIRO1 3 years ago
@Caelsus There are a few. Check out electroactive polymer as well as magnetic shape memory alloy
krap101 1 year ago
cool.. did u prepared NiTi thin film by yourself or got it from special metals ?
rarathorat 3 years ago
Hi!
The films were deposited by co-sputtering (using a Ni-Ti and a Ti target) in a chamber specially designed for in situ X-ray measurements, enabling an in-situ characterization by X-ray diffraction of the films during their growth. Intermediate structural states of the growing film have been identified, which cannot be seen/revealed ex-situ, because those states occurred only during the growth but were no longer detectable after deposition.
VIMEIRO1 3 years ago
I have worked on the optimisation of the deposition conditions of films of Ni-Ti during my PhD work.
If you have more questions please contact me at any time
VIMEIRO1 3 years ago
bnp
WhereEaglesDareUK 3 years ago
I remember!
Bugstomper2 4 years ago