Microwave induced mechanical activation of hydrogel dimers

H.K. Khattak, S.R. Waitukaitis, A.D. Slepkov, Soft Matter 15 (2019) 5804–5809.

Download
No fulltext has been uploaded. References only!

Journal Article | Published | English
Author
; ;
Department
Abstract
When grape-sized aqueous dimers are irradiated in a microwave oven, an intense electromagnetic hotspot forms at their point of contact, often igniting a plasma. Here we show that this irradiation can result in the injection of mechanical energy. By examining irradiated hydrogel dimers through high-speed imaging, we find that they repeatedly bounce off of each other while irradiated. We determine that an average of 1 lJ of mechanical energy is injected into the pair during each collision. Furthermore, a characteristic high-pitched audio signal is found to accompany each collision. We show that both the audio signal and the energy injection arise via an interplay between vaporization and elastic deformations in the region of contact, the so-called ‘elastic Liedenfrost effect’. Our results establish a novel, non-contact method of injecting mechanical energy into soft matter systems, suggesting application in fields such as soft robotics.
Publishing Year
Date Published
2019-07-15
Journal Title
Soft Matter
Volume
15
Issue
29
Page
5804-5809
ISSN
eISSN
IST-REx-ID

Cite this

Khattak HK, Waitukaitis SR, Slepkov AD. Microwave induced mechanical activation of hydrogel dimers. Soft Matter. 2019;15(29):5804-5809. doi:10.1039/c9sm00756c
Khattak, H. K., Waitukaitis, S. R., & Slepkov, A. D. (2019). Microwave induced mechanical activation of hydrogel dimers. Soft Matter, 15(29), 5804–5809. https://doi.org/10.1039/c9sm00756c
Khattak, Hamza K., Scott R Waitukaitis, and Aaron D. Slepkov. “Microwave Induced Mechanical Activation of Hydrogel Dimers.” Soft Matter 15, no. 29 (2019): 5804–9. https://doi.org/10.1039/c9sm00756c.
H. K. Khattak, S. R. Waitukaitis, and A. D. Slepkov, “Microwave induced mechanical activation of hydrogel dimers,” Soft Matter, vol. 15, no. 29, pp. 5804–5809, 2019.
Khattak HK, Waitukaitis SR, Slepkov AD. 2019. Microwave induced mechanical activation of hydrogel dimers. Soft Matter. 15(29), 5804–5809.
Khattak, Hamza K., et al. “Microwave Induced Mechanical Activation of Hydrogel Dimers.” Soft Matter, vol. 15, no. 29, Royal Society of Chemistry, 2019, pp. 5804–09, doi:10.1039/c9sm00756c.

Export

Marked Publications

Open Data IST Research Explorer

Sources

PMID: 31305853
PubMed | Europe PMC

Search this title in

Google Scholar