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14/08/2020

Getting result after a lot of failed attempt is the driving force to pursue research
The beauty of 4D Printing technology
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16/06/2020

For more on 4D printing, plz subscribe
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Courtesy: Nature news and comments
https://www.facebook.com/NatureNews/videos/1981360555267777/

27/05/2020

Time is the element that pushes 3D to 4D, creating printed materials that change their shape over time. Their potential is great, but their development is still in the early stages. Still, 4D-printed healthcare applications may be the closest to commercial use. Shape-shifting materials, for instance, could be used for small, implantable medical devices. In this video we take a closer look at how 3D printing is building a foundation for 4D development in biomedical applications.

Source: https://www.asme.org/topics-resources/content/video-embracing-4d-printing
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23/05/2020

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Article: 4D Printing: The Bio Revolution⁠
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4-D printing is taking conventional 3-D printing and adding a time factor into the process. Certain materials that are compatible with biological systems expand, contract, bend, or straighten into calculated shapes when introduced to an external energy stimulus.⁠
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Much like motorized and pneumatic actuators, Smart materials use an external trigger or stimulus, such as a voltage, heat, or pressure source, in order to have a resulting deformation change. A couple of reasons these deformations can take place is for either an end movement or a system movement. In an end movement, you will have a part deform throughout the whole material for a resulting purpose. ⁠
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In a system movement, compliant mechanisms, which are jointless mechanisms that distribute their deformations in order to translate a deformation in one area to a different length deformation in another are used in collaboration with a smart material so that the location-specific material shape-change works as the actuator for a mechanism
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Image/video credits: MIT⁠
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22/05/2020

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4D bioprinting is a new concept that has potential to advance the field of 3D bioprinting further by incorporating the fourth dimension of time. 🕰
The printing technology is the same, but the printed materials are smart and they are preprogrammed to respond to a predefined external stimulus ⚡️by changing their shape.
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21/05/2020

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4D printing examples by .alghaili
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21/05/2020

.3d
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THERMORPH
Morphing Matter Lab, Carnegie Mellon University

4D Printing with Heat
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21/05/2020

.3d
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A team at the Wyss Institute and Harvard SEAS has developed a new microscale printing method to create transformable objects. These "4D-printed" objects go a step beyond 3D printing to incorporate a fourth dimension–time.
Source 👉
The method was inspired by the way plants change shape over time in response to environmental stimuli. This orchid-shaped structure is printed with a hydrogel composite ink containing aligned cellulose fibrils, which enable anisotropic swelling. A proprietary mathematical model developed by the team precisely predicts how the fibrils will swell in water.
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20/05/2020

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2014
By: Prof. Skylar Tibbits

25/02/2020

Shape changing composite... Same part programmed to behave in two different ways 👨‍🔧🕵️‍♂️🔬🛠📏📈🖊🔍Fabricated and tested by & at Department of Mechanical Engineering,
IIT Kharagpur 🇮🇳

20/02/2020

Complex actuation of 4D printed par🌡
Water temp=80°C approx

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