MAY 08, 2020 7:05 AM PDT

Scientists to Spiders: How Do You Handle Sticky (Nanofiber) Situation?

WRITTEN BY: Daniel Duan

The term "biomimicry" describes the models and methods harnessed by scientists to imitate natural elements, in order to solve complex problems. A team of Austrian researchers has figured out a way to tame messy, sticky nanofibers, by mimicking the surface nanostructure on spiders' hindleg.   

With a diameter in the nanometer range, nanofibers can be made of different polymers such as collagen, cellulose, silk fibroin, and polysaccharides. Due to their unusual physical properties, nanofibers are the most sought-after materials for many advanced applications, including tissue engineering, drug delivery, battery construction, and functional textiles. But these marvelous materials are inherently sticky to any surface they touch, which presents a challenge for their production and processing. 

Cribellate spiders, which include tens of thousands of spider species, are glue-affixing orb weavers. They can build complex funnel or tube webs for capturing prey. Thanks to a comb-like structure, the calamistrum, on their hindmost legs, these weavers can handle spider silk, a proteinous fiber, with ease.

In this study, the researchers placed the comb under a scanning electron microscope (SEM), and observed that its surface is covered with fingerprint-like nanoripples. They found that these nanostructures help prevent the nanofiber to be in close contact with the spider's leg and educing the adhesive van der Waals forces between the nanofibers and surface. 

The Austrian team sculpted the nanoscale grooves onto a plastic foil with laser and then coated the foil with gold to reduce its Gold coating was performed to reduce electrostatic interaction. They then tested the anti-adhesive property of the sculpted foil against vs. normal foil. The biomimicry design allows the engineered surface to be much less sticky, behaving similarly to the spider's comb.

The researchers hoped that the technical surface they developed can be adapted to improve tools for handling nanofibrous materials. 

Source: ACS via Youtube

About the Author
  • Graduated with a bachelor degree in Pharmaceutical Science and a master degree in neuropharmacology, Daniel is a radiopharmaceutical and radiobiology expert based in Ottawa, Canada. With years of experience in biomedical R&D, Daniel is very into writing. He is constantly fascinated by what's happening in the world of science. He hopes to capture the public's interest and promote scientific literacy with his trending news articles. The recurring topics in his Chemistry & Physics trending news section include alternative energy, material science, theoretical physics, medical imaging, and green chemistry.
You May Also Like
JAN 17, 2021
Chemistry & Physics
Cleaning up microfibers at the source with electrolytic oxidation
JAN 17, 2021
Cleaning up microfibers at the source with electrolytic oxidation
A new method of eradicating microplastics in wastewater has been described in a study published recently in the Env ...
JAN 18, 2021
Chemistry & Physics
Watching the eletronic signals of a wandering mind
JAN 18, 2021
Watching the eletronic signals of a wandering mind
A study published recently in the Proceedings of the National Academy of Sciences contemplates the places our minds ...
MAR 30, 2021
Cell & Molecular Biology
Cells Can 'Walk' On a Nanofiber Tightrope
MAR 30, 2021
Cells Can 'Walk' On a Nanofiber Tightrope
When cells were given a tiny 'tightrope' they 'walked' it, and researchers have discovered a new kind of cellular moveme ...
MAR 31, 2021
Chemistry & Physics
Can superconductor materials be produced under ambient pressures?
MAR 31, 2021
Can superconductor materials be produced under ambient pressures?
A new study published in Physical Review Letters reports on the development of the fabrication of superconducting materi ...
APR 13, 2021
Clinical & Molecular DX
A Color-Changing "Invisible Tattoo" for Long-Term Health Monitoring
APR 13, 2021
A Color-Changing "Invisible Tattoo" for Long-Term Health Monitoring
German researchers have developed an innovative method for continuously tracking and monitoring biomarkers and drugs cir ...
APR 08, 2021
Chemistry & Physics
Introducing pulp fly ash to concrete for a more sustainable system
APR 08, 2021
Introducing pulp fly ash to concrete for a more sustainable system
In an effort to create a more circular economy of materials, researchers from UBC Okanagan are designing methods to recy ...
Loading Comments...