Staple-shaped particles create material that switches between strong and loose
7 reported
Researchers at the University of Colorado at Boulder have developed a material made from staple-shaped particles that can rapidly switch between a strong, solid-like state and a loose, easily separated collection. The team used Monte Carlo simulations and pickup tests to study how particle shape affects entanglement. They found that a two-legged particle resembling a staple produced the highest degree of entanglement, combining tensile strength and toughness. By applying different vibration patterns, the researchers could control how strongly the particles interlock. Gentle vibrations strengthened the material, while stronger vibrations caused it to unravel. The findings were published in the Journal of Applied Physics. The researchers suggest potential applications in recyclable buildings, reconfigurable structures, and swarm robotics.
What’s reported
The material is made from staple-shaped particles that can tangle together.
Gentle vibrations cause particles to interlock and strengthen the material.
Stronger vibrations cause the network to unravel and separate.
The research was conducted at the Paul M. Rady Department of Mechanical Engineering at CU Boulder.
The findings were published in the Journal of Applied Physics.
The team used Monte Carlo simulations and pickup tests to study particle behavior.
The staple-like particle shape demonstrated both high strength and toughness simultaneously.
Key figures
Professor Francois Barthelat, leader of the Laboratory for Advanced Materials & Bioinspiration at CU Boulder
Youhan Sohn, PhD student at CU Boulder
Saeed Pezeshki, PhD student at CU Boulder
Sources: ScienceDaily
