Ceramics are moving into the 4D printing realm for the first time
For some materials, researchers have already moved beyond 3D printing to what’s being called 4D printing. In this process, time becomes the fourth dimension and objects can transform themselves over time when influenced by elements such as heat, mechanical force, or a magnetic field.
Now, scientists in China have developed a novel ink that takes ceramics into this 4D printing realm for the first time, paving the way for new structural applications of the material—including for electronic devices and aerospace. Specifically, a team at City University of Hong Kong created a ceramic ink using a mixture of polymers and ceramic nanoparticles that can print ceramic precursors that are soft and can be stretched three times beyond their initial length. Continue reading “Ceramics are moving into the 4D printing realm for the first time”
Novel mathematical approach pushes innovation in 4D printing
Recent advances in digital factory science make it possible to print more compliant objects across a wider range of length-scales than conventional engineering processes. A bottleneck for enabling the next technological progress resides in filling the gap in the comprehension of the unprecedented degree of complexity dominating this novel technology.
Mathematics plays a pivotal role in this contemporary industrial revolution: a study recently published by Nature Communications solves a problem of utmost importance for the development of 4d printing, i.e. the possibility to fabricate objects with a programmable shape over time. Professor Pasquale Ciarletta at the MOX Laboratory, Department of Mathematics, Politecnico di Milano, has provided fundamental insights into controlling the sudden nucleation of localised furrows, also known as creases, in soft solids. Continue reading “Novel mathematical approach pushes innovation in 4D printing”
Changing robot capabilities by using self-folding origami “exoskeletons”
From butterflies that sprout wings to hermit crabs that switch their shells, many animals must adapt their exterior features in order to survive. While humans don’t undergo that kind of metamorphosis, we often try to create functional objects that are similarly adaptive — including our robots.
Despite what you might have seen in “Transformers” movies, though, today’s robots are still pretty inflexible. Each of their parts usually has a fixed structure and a single defined purpose, making it difficult for them to perform a wide variety of actions.
Researchers from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) are aiming to change that with a new shape-shifting robot that’s something of a superhero: It can transform itself with different “outfits” that allow it to perform different tasks. Continue reading “Changing robot capabilities by using self-folding origami “exoskeletons” (video)”
3D Printing coupled with right materials can impact on solving real-world problems – Marc in het Panhuis, University of Wollongong, Australia
Marc in het Panhuis is a Professor of Materials Science in the School of Chemistry and a Chief Investigator in the Australian Research Council Centre of Excellence for Electromaterials Science at the University of Wollongong (Australia). He will speak about 3D and 4D printing of edible and living hydrogel materials at the 4D Printing & Meta Materials Conference, on April 18, 2018, at Brightlands Chemelot Campus in Sittard-Geleen, The Netherlands.
What drives you?
Curiosity to know and understand the world around me.
What emerging technologies/trends do you see as having the greatest potential in the short and long run? Continue reading “3D Printing coupled with right materials can impact on solving real-world problems – Interview with Marc in het Panhuis, University of Wollongong”
3D and 4D printing of edible and living hydrogel materials – Presented by Marc in het Panhuis, University of Wollongong, at the 4D Printing & Meta Materials Conference, on April 18, 2018, at Brightlands Chemelot Campus in Sittard-Geleen, The Netherlands.
Hydrogels are smart and multifunctional materials with a real potential for use novel applications including soft robotics, (edible) sensors and bionic implants. Consisting of a highly swollen polymer network, hydrogels are typically soft and brittle meaning they are not compatible with many traditional techniques used to process materials into structures.
In this presentation, I will demonstrate a variety of (extrusion-based) 3D and 4D printing techniques for processing hydrogel inks alongside other inks of structural polymers to create composite architectures including a smart valve, an artificial cartilage meniscus, an artificial tendon, brain-like structures, edible electronic circuits, stretchable devices and edible/living hydrogels. Continue reading “3D and 4D printing of edible and living hydrogel materials – Presented by Marc in het Panhuis, University of Wollongong”
TU Delft researchers develop new technique to combine 3D Printing & origami folding
Researchers at TU Delft have combined origami techniques and 3D printing to create flat structures that can fold themselves into 3D structures (for example a tulip). The structures self-fold according to a pre-planned sequence, with some parts folding sooner than others. Usually, expensive printers and special materials are needed for that. But the TU Delft scientists have created a new technique that requires only a common 3D printer and ubiquitous material. Among other applications, their research has the potential to greatly improve bone implants.
In recent years, Amir Zadpoor of TU Delft has become somewhat of an origami master. His team’s work combines the traditional Japanese paper folding art with the more novel technology of 3D printing in order to create constructs that can self-roll, self-twist, self-wrinkle and self-fold into a variety of 3D structures. In 2016, the researchers already demonstrated several self-folding objects. ‘But there were still serious challenges we needed to address’, says Zadpoor. Continue reading “TU Delft researchers develop new technique to combine 3D Printing & origami folding (video)”
Expanding polymer enables self-folding without heating or immersion in water
As 3-D printing has become a mainstream technology, industry and academic researchers have been investigating printable structures that will fold themselves into useful three-dimensional shapes when heated or immersed in water.
In a paper appearing in the American Chemical Society’s journal Applied Materials and Interfaces, researchers from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) and colleagues report something new: a printable structure that begins to fold itself up as soon as it’s peeled off the printing platform.
One of the big advantages of devices that self-fold without any outside stimulus, the researchers say, is that they can involve a wider range of materials and more delicate structures. Continue reading “Expanding polymer enables self-folding without heating or immersion in water ( VIDEO)”
Researchers engineer shape-shifting noodles when dunked in water
“Don’t play with your food” is a saying that MIT researchers are taking with a grain or two of salt. The team is finding ways to make the dining experience interactive and fun, with food that can transform its shape when water is added.
The researchers, from MIT’s Tangible Media Group, have concocted something akin to edible origami, in the form of flat sheets of gelatin and starch that, when submerged in water, instantly sprout into three-dimensional structures, including common pasta shapes such as macaroni and rotini.
The edible films can also be engineered to fold into the shape of a flower as well as other unconventional configurations. Playing with the films’ culinary potential, the researchers created flat discs that wrap around beads of caviar, similar to cannoli, as well as spaghetti that spontaneously divides into smaller noodles when dunked in hot broth. Continue reading “Researchers engineer shape-shifting noodles when dunked in water (VIDEO)”
4D Printing + Bioprinting = 4D Bioprinting
Making and utilizing new materials to improve our life is a defining feature of mankind. We moved on from the stone age, to the bronze age, to the age of silicon and plastic. Now we are at the edge of a new episode, where technological breakthroughs allow us to create, investigate and dream of a total new range of structured forms of matter. Continue reading “4D Printing + Bioprinting = 4D Bioprinting”
The Eiffel Tower recovering its shape using 4D Printing.Unlike 3D printing, 4D printed structures have the potential to transform shape in a pre-programmed way in response to a stimulus (e.g. changes in temperature). These types of structural transformations currently exist outside of additive manufacturing, with research having already demonstrated “shape memory” and “smart material” properties. Continue reading “The Eiffel Tower recovering its shape using 4D Printing”