A team of Lawrence Livermore National Laboratory researchers has demonstrated the 3D printing of shape-shifting structures that can fold or unfold to reshape themselves when exposed to heat or electricity. The micro-architected structures were fabricated from a conductive, environmentally responsive polymer ink developed at the Lab.
In an article published recently by the journal Scientific Reports, Lab scientists and engineers revealed a strategy for creating boxes, spirals and spheres from shape memory polymers (SMPs), bio-based “smart” materials that exhibit shape-changes when resistively heated or when exposed to the appropriate temperature.
In the paper, the researchers describe creating primary shapes from an ink made from soybean oil, additional co-polymers and carbon nanofibers, and “programming” them into a temporary shape at an engineered temperature, determined by chemical composition. Then the shape-morphing effect was induced by ambient heat or by heating the material with an electrical current, which reverts the part’s temporary shape back to its original shape.
Ultimately, Rodriguez said, researchers can use the materials to create extremely complex parts.
“If we printed a part out of multiple versions of these formulations, with different transition temperatures, and run it through a heating ramp, they would expand in a segmented fashion and unpack into something much more complex,” she said.
Through a direct-ink writing 3D printing process, the team produced several types of structures — a bent conductive device that morphed to a straight device when exposed to an electric current or heat, a collapsed stent that expanded after being exposed to heat and boxes that either opened or closed when heated.
“We have these materials with 3D structures but they have extra smart properties; they can retain a memory of the previous structure,” said Lab staff scientist James Lewicki. “It opens up a whole new property set. If you can print with these polymer composites you can build things and electrically activate them to unfold. Instead of a dumb lump, you are left with this sentient, responsive material.”
The research derives from a Laboratory Directed Research & Developmentproject to develop high-performance 3D-printed carbon fiber composites.
Others contributing to the paper were Lab scientists and engineers Cheng Zhu, Eric Duoss, Thomas Wilson and Chris Spadaccini.
The Latest on: 4D Printing
via Google News
The Latest on: 4D Printing
- 3D and 4D Technology Market | Share, Growth Rate, Opportunities and Market Forecast 2027on February 28, 2021 at 9:29 pm
The rapid decreasing cost, advanced software design, and growing range of printable materials have aided to bring a new technology termed 4D printing technology. In the entertainment industry ...
- 4D Printing Market Size, Share and Analysis Valuation to Cross USD 419.5 million By 2026on February 18, 2021 at 10:08 am
Feb 18, 2021 (Market Insight Reports) -- Selbyville, Delaware. The report 4D Printing Market Size and Analysis maintains enhanced dynamics and is overshadowed by a top player across the globe.
- 4D Printing Market – Industry Analysis, Technological Innovations, Trends, Growth opportunities and Demand Forecast from 2021-2026on February 15, 2021 at 2:23 am
Market Insights Reports delivers key insights on the 4D Printing market in its latest report titled, “4D Printing Market - Growth, Trends, COVID-19 Impact, And Forecasts (2021 - 2026 ...
- Update: 4D Printing Self-Assembling Shapes In Carbon Composites, Woodon February 11, 2021 at 4:00 pm
The first time I wrote about MIT's Skylar Tibbits and what he calls 4D printing, I refused to use that term. It seemed pretentious and, well, dishonest. Self-assembly meets 3D printing was more ...
- Breakthrough technology makes ‘living’ polymerization compatible with 3D printingon February 9, 2021 at 4:01 pm
The new process also enables 4D printing, by which the 3D-printed object can change shape or its chemical and physical properties can be altered to adapt to its environment. Advancing the recycling ...
- 4D Printing Market Advancement in Technology, Innovations and Global Trends 2021on February 9, 2021 at 1:27 am
The Global 4D Printing Market Research Report 2021-2027 is a valuable source of insightful data for business strategists. It provides the industry overview with growth analysis and historical ...
- 4D Printing in Healthcare Market : Industry Development Scenario and Forecast 2027on February 7, 2021 at 9:27 pm
The MarketWatch News Department was not involved in the creation of this content. Feb 08, 2021 (AmericaNewsHour) -- Global 4D Printing in Healthcare Market is valued approximately at USD 6.82 million ...
- 4D Printing Method Makes Shapes Fold Up Like Origamion February 2, 2021 at 4:00 pm
The concept of 4D printing isn't a new idea, but processes that use new types of environmental stimuli keep on appearing. 4D printing is usually defined as 3D printing with materials that change shape ...
- Advanced manufacturingon August 18, 2020 at 8:29 pm
Implantable microfluidics, 4D printing, and hybrid sensing are a few other key focus areas from the group. Bin Li | Dr. Li is performing computation-directed design and processing of lightweight ...
- Porcupines inspire tiny needles that could replace shotson February 4, 2020 at 12:20 pm
New 4D printed microneedles could one day eliminate the need for painful hypodermic needles to deliver shots, inject drugs, and get blood samples, researchers report. While 3D printing builds ...
via Bing News