Activated Metals to Generate Heat for Biomedical Applications

Delivering heat in vivo could enhance a wide range of biomedical therapeutic and diagnostic technologies, including long-term drug delivery devices and cancer treatments. To date, providing thermal energy is highly power-intensive, rendering it oftentimes inaccessible outside of clinical settings. W...

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Bibliographic Details
Published in:ACS materials letters 2023-09, Vol.5 (9), p.2508-2517
Main Authors: Remlova, Eva, Feig, Vivian Rachel, Kang, Ziliang, Patel, Ashka, Ballinger, Ian, Ginzburg, Anna, Kuosmanen, Johannes, Fabian, Niora, Ishida, Keiko, Jenkins, Joshua, Hayward, Alison, Traverso, Giovanni
Format: Article
Language:English
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Letter
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Summary:Delivering heat in vivo could enhance a wide range of biomedical therapeutic and diagnostic technologies, including long-term drug delivery devices and cancer treatments. To date, providing thermal energy is highly power-intensive, rendering it oftentimes inaccessible outside of clinical settings. We developed an in vivo heating method based on the exothermic reaction between liquid-metal-activated aluminum and water. After establishing a method for consistent activation, we characterized the heat generation capabilities with thermal imaging and heat flux measurements. We then demonstrated one application of this reaction: to thermally actuate a gastric resident device made from a shape-memory alloy called Nitinol. Finally, we highlight the advantages and future directions for leveraging this novel in situ heat generation method beyond the showcased example.
ISSN:2639-4979
2639-4979
DOI:10.1021/acsmaterialslett.3c00581