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. 2022 Jan 18;144(3):030801. doi: 10.1115/1.4053007

Fig. 2.

Magnetic heating of SPIONs for nanowarming. (a) A schematic illustration of the procedure of preparing human umbilical cord matrix mesenchymal stem cells for cryopreservation by vitrification using a plastic straw with SPION-mediated magnetic induction heating for warming, (b) A schematic illustration of using hydrogel micro-encapsulation of cells to eliminate direct contact between cells and SPIONs for warming the cryopreserved hydrogel-cell constructs, and (c) A schematic illustration of the hot spot generated around a SPION during magnetic heating, due to ballistic thermal transport within the nanoparticle and Fourier diffusive heating in the adjacent medium. The sketches in (a) and (b) are reproduced with permission from Wang et al. [125] (Copyright 2016 Acta Materialia Inc. by Elsevier) and Liu et al. [127] (Copyright 2018 by American Chemical Society), respectively, with modification.

Magnetic heating of SPIONs for nanowarming. (a) A schematic illustration of the procedure of preparing human umbilical cord matrix mesenchymal stem cells for cryopreservation by vitrification using a plastic straw with SPION-mediated magnetic induction heating for warming, (b) A schematic illustration of using hydrogel micro-encapsulation of cells to eliminate direct contact between cells and SPIONs for warming the cryopreserved hydrogel-cell constructs, and (c) A schematic illustration of the hot spot generated around a SPION during magnetic heating, due to ballistic thermal transport within the nanoparticle and Fourier diffusive heating in the adjacent medium. The sketches in (a) and (b) are reproduced with permission from Wang et al. [125] (Copyright 2016 Acta Materialia Inc. by Elsevier) and Liu et al. [127] (Copyright 2018 by American Chemical Society), respectively, with modification.