Researchers at The University of Akron are again spinning inspiration from spider silk — this time to create more efficient and stronger commercial and biomedical adhesives that could, for example, potentially attach tendons to bones or bind fractures.
The Akron scientists created synthetic duplicates of the super-sticky, silk “attachment discs” that spiders use to attach their webs to surfaces. These discs are created when spiders pin down an underlying thread of silk with additional threads, like stiches or staples, explains Ali Dhinojwala, UA’s H.A. Morton professor of polymer science and lead researcher on the project.
This “staple-pin” geometry of the attachment disc creates a strong attachment force using little material, he adds.
Through electrospinning, a process by which an electrical charge is used to draw very fine fibers from a liquid (in this case, polyurethane), Dhinojwala and his team were able to mimic the efficient staple-pin design, pinning down an underlying nylon thread with the electrospun fibers.
“This adhesive architecture holds promise for potential applications in the area of adhesion science, particularly in the field of biomedicine where the cost of the materials is a significant constraint,” the authors write in their paper, “Synthetic Adhesive Attachment Discs Inspired by Spider’s Pyriform Silk Architecture,” published online March 1 in the Journal of Polymer Physics.
Dhinojwala adds that the design could potentially be used, in addition to medical applications, to create commercial adhesives stronger than conventional glue and tape.
“Instead of using big globs of glue, for example, we can use this unique and efficient design of threads pinning down a fiber,” he says. “The inspiration was right in front of us, in nature.”
“You can learn a lot of science from nature,” adds Dharamdeep Jain, a graduate student and co-author of the paper.
Indeed, researchers at UA have been learning quite a bit from nature’s silk-spinning artists.
Dhinojwala and Vasav Sahni, former graduate student and third co-author of the aforementioned paper, previously worked together to study the adhesive properties of spider silk; and last year Todd Blackledge, Leuchtag Endowed Chair and associate professor of biology and integrated bioscience at UA, revealed the possibilities of using silk to develop materials that are as strong as steel and yet flexible as rubber.
Story by Nicholas Nussen
Media contact: Denise Henry, 330-972-6477 or email@example.com.
Denise Henry | Eurek Alert!
Glass's off-kilter harmonies
18.01.2017 | University of Texas at Austin, Texas Advanced Computing Center
Explaining how 2-D materials break at the atomic level
18.01.2017 | Institute for Basic Science
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
19.01.2017 | Earth Sciences
19.01.2017 | Life Sciences
19.01.2017 | Physics and Astronomy