Self-propulsion of a calcium alginate surfer
A droplet of sodium alginate dripped into calcium chloride solution results in plate or boat shaped hydrogels. Both exhibit several minute-long self-propelled motion on the liquid surface without any extra fuel added, offering a new method to making active materials. By changing the initial concentr...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2023
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| Sorozat: | SOFT MATTER
19 No. 41 |
| Tárgyszavak: | |
| doi: | 10.1039/d3sm01026k |
| mtmt: | 34477656 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/29230 |
| Tartalmi kivonat: | A droplet of sodium alginate dripped into calcium chloride solution results in plate or boat shaped hydrogels. Both exhibit several minute-long self-propelled motion on the liquid surface without any extra fuel added, offering a new method to making active materials. By changing the initial concentrations, we are able to tune the transient dynamic activities from translational to rotational or stop-and-run motion. Dynamics are governed by osmotic pressure induced Marangoni effect, depending on the density difference and initial concentrations. Osmosis-induced Marangoni-driven self-propulsion of hydrogel surfers develops when sodium alginate solution is dropped into the pool of calcium chloride solution. |
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| Terjedelem/Fizikai jellemzők: | 8033-8039 |
| ISSN: | 1744-683X |