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Authors:
Vićentić, Teodora; Greco, Immacolata; Iorio, Carlo; Mišković, Vanja; Bajuk-Bogdanović, Danica; Pašti, Igor; Radulović, K.; Klenk, Sebastian; Stimpel-Lindner, Tanja; Duesberg, Georg S.; Spasenović, Marko 
Document type:
Zeitschriftenartikel / Journal Article 
Title:
Laser-induced graphene on cross-linked sodium alginate 
Journal:
Nanotechnology 
Volume:
35 
Year:
2024 
Pages from - to:
115103 
Language:
Englisch 
Keywords:
laser-induced graphene ; alginate ; nanobiotechnology ; graphene synthesis ; biocompatible materials ; graphene characterization 
Abstract:
Laser-induced graphene (LIG) possesses desirable properties for numerous applications. However, LIG formation on biocompatible substrates is needed to further augment the integration of LIG-based technologies into nanobiotechnology. Here, LIG formation on crosslinked sodium alginate is reported. The LIG is systematically investigated, providing a comprehensive understanding of the physicochemical characteristics of the material. Raman spectroscopy, scanning electron microscopy with energy-dispersive x-ray analysis, x-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy and x-ray photoelectron spectroscopy techniques confirm the successful generation of oxidized graphene on the surface of cross-linked sodium alginate. The influence of laser parameters and the amount of crosslinker incorporated into the alginate substrate is explored, revealing that lower laser speed, higher resolution, and increased CaCl2 content leads to LIG with lower electrical resistance. These findings could have significant implications for the fabrication of LIG on alginate with tailored conductive properties, but they could also play a guiding role for LIG formation on other biocompatible substrates. 
ISSN:
1361-6528 
Article ID:
115103 
Department:
Fakultät für Elektrotechnik und Informationstechnik 
Institute:
EIT 2 - Institut für Physik 
Chair:
Duesberg, Georg 
Research Hub UniBw M:
dtec.bw 
Project:
VITAL-SENSE 
Open Access yes or no?:
Ja / Yes 
Type of OA license:
CC BY 4.0