Laser-assisted bioprinting at different wavelengths and pulse durations with a metal dynamic release layer: A parametric study

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Koch; L;, Brandt; O;, Deiwick; A;, Chichkov; B.: Laser-assisted bioprinting at different wavelengths and pulse durations with a metal dynamic release layer: A parametric study. In: International Journal of Bioprinting 3 (2017), Nr. 1, S. 42-53. DOI: https://doi.org/10.18063/IJB.2017.01.001

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/3497

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Sum total of downloads: 908




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Abstract: 
For more than a decade, living cells and biomaterials (typically hydrogels) are printed via laser-assisted bioprinting. Often, a thin metal layer is applied as laser-absorbing material called dynamic release layer (DRL). This layer is vaporized by focused laser pulses generating vapor pressure that propels forward a coated biomaterial. Different lasers with laser wavelengths from 193 to 1064 nanometer have been used. As a metal DRL gold, silver, or titanium layers have been used. The applied laser pulse durations were usually in the nanosecond range from 1 to 30 ns. In addition, some studies with femtosecond lasers have been published. However, there are no studies on the effect of all these lasers parameters on bioprinting with a metal DRL, and on comparing different wavelengths and pulse durations except one study comparing 500 femtosecond pulses with 15 ns pulses. In this paper, the effects of laser wavelength (355, 532, and 1064 nm) and laser pulse duration (in the range of 8 to 200 ns) are investigated. Furthermore, the effects of laser pulse energy, intensity, and focal spot size are studied. The printed droplet volume, hydrogel jet velocity, and cell viability are analyzed.
License of this version: CC BY-NC 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Fakultät für Mathematik und Physik
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pos. country downloads
total perc.
1 image of flag of Germany Germany 508 55.95%
2 image of flag of United States United States 99 10.90%
3 image of flag of China China 72 7.93%
4 image of flag of Spain Spain 17 1.87%
5 image of flag of India India 15 1.65%
6 image of flag of Russian Federation Russian Federation 13 1.43%
7 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 13 1.43%
8 image of flag of France France 13 1.43%
9 image of flag of No geo information available No geo information available 12 1.32%
10 image of flag of Korea, Republic of Korea, Republic of 12 1.32%
    other countries 134 14.76%

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