A new material developed by CU Boulder engineers can transform into complex, pre-programmed shapes via light and temperature stimuli, allowing a literal square peg to morph and fit into a round hole before fully reverting to its original form.
The controllable shape-shifting material, described today in the journal Science Advances, could have broad applications for manufacturing, robotics, biomedical devices and artificial muscles.
“The ability to form materials that can repeatedly oscillate back and forth between two independent shapes by exposing them to light will open up a wide range of new applications and approaches to areas such as additive manufacturing, robotics and biomaterials”, said Christopher Bowman, senior author of the new study and a Distinguished Professor in CU Boulder’s Department of Chemical and Biological Engineering (CHBE).
Previous efforts have used a variety of physical mechanisms to alter an object’s size, shape or texture with programmable stimuli. However, such materials have historically been limited in size or extent and the object state changes have proven difficult to fully reverse.
The new CU Boulder material achieves readily programmable two-way transformations on a macroscopic level by using liquid crystal elastomers (LCEs), the same technology underlying modern television displays. The unique molecular arrangement of LCEs make them susceptible to dynamic change via heat and light.
To solve this, the researchers installed a light-activated trigger to LCE networks that can set a desired molecular alignment in advance by exposing the object to particular wavelengths of light. The trigger then remains inactive until exposed to the corresponding heat stimuli. For example, a hand-folded origami swan programmed in this fashion will remain folded at room temperature. When heated to 200 degrees Fahrenheit, however, the swan relaxes into a flat sheet. Later, as it cools back to room temperature, it will gradually regain its pre-programmed swan shape.
The ability to change and then change back gives this new material a wide range of possible applications, especially for future biomedical devices that could become more flexible and adaptable than ever before.
“We view this as an elegant foundational system for transforming an object’s properties,” said Matthew McBride, lead author of the new study and a post-doctoral researcher in CHBE. “We plan to continue optimizing and exploring the possibilities of this technology.”
The Latest on: Shape-shifting material
via Google News
The Latest on: Shape-shifting material
- Shape-shifting drone could speed up search and rescue in disaster zones on February 19, 2019 at 8:22 am
"The technology has lots of other applications as well — for example, it could be used to examine the quality of materials on a collapsed bridge. But technologies must be developed in line with public ... […]
- Review: ‘Thunder Knocking on the Door’ at Creative Cauldron on February 18, 2019 at 11:33 am
Thunder, in this case, is one Marvell Thunder, a supernatural, shape-shifting, competitive trickster ... clearly love the material, and the group’s passion for the show and its vibrant music ... […]
- The Miracle Metal Superstock: How this $7 Company Could Change the World and Your Portfolio Forever on February 8, 2019 at 4:18 am
GaN material is thermally robust and chemically stable ... We have to be honest. When we think of the shape-shifting properties we immediately think of the killer T-1000 robot in the Terminator movies ... […]
- Elastomer sheets as shape-shifting actuators on February 7, 2019 at 10:24 am
The motive capabilities of mechanical systems can be enlarged by use of new shape-shifting materials. Linear An initially flat thin circular sheet of elastomer (left) morphs into a dome shape (middle) ... […]
- Could shape-shifting elastomer 'transform the way mechanical devices work'? on February 5, 2019 at 2:46 am
"We see this work as the first step in the development of a soft, shape shifting material that changes shape according to electrical control signals from a computer," said senior author David Clarke, ... […]
- Q&A: Examining a Cell’s Shape-Shifting “Bones” on January 25, 2019 at 9:32 am
Biophysicist Jennifer Ross hopes to find the rules that govern how cells restructure and self-repair, with the goal of creating new materials that do the same thing. Jennifer Ross puts her decision to ... […]
- Mighty morphing materials take complex shapes on December 19, 2018 at 4:00 pm
Rice University scientists have created a rubbery, shape-shifting material that morphs from one sophisticated form to another on demand. The shapes programmed into a polymer by materials scientist Raf... […]
- Shape-Shifting Materials are Goal of New Nanotechnology Project on December 13, 2018 at 4:00 pm
BUFFALO, N.Y. -- An international research team has received a $2.9 million grant from the Air Force Office of Scientific Research to design nanomaterials whose internal structure changes shape in res... […]
- Shape-shifting material switches between forms in response to heat and light on August 27, 2018 at 6:44 pm
Developed by a team led by Christopher Bowman, a Distinguished Professor in CU Boulder's Department of Chemical and Biological Engineering (CHBE), the new material is designed to overcome the limitati... […]
- CU engineers develop shape-shifting material on August 26, 2018 at 8:38 pm
A new material developed by University of Colorado Boulder engineers can transform into complex, pre-programmed shapes via light and temperature stimuli, allowing a literal square peg to morph and fit ... […]
via Bing News