---
_id: '654'
abstract:
- lang: eng
text: Magnetic nanofibers are of great interest in basic research, as well
as for possible applications in spintronics and neuromorphic computing. Here we
report on the preparation of magnetic nanofiber mats by electrospinning polyacrylonitrile
(PAN)/nanoparticle solutions, creating a network of arbitrarily oriented nanofibers
with a high aspect ratio. Since PAN is a typical precursor for carbon, the magnetic
nanofiber mats were stabilized and carbonized after electrospinning. The magnetic
properties of nanofiber mats containing magnetite or nickel ferrite nanoparticles
were found to depend on the nanoparticle diameters and the potential after-treatment,
as compared with raw nanofiber mats. Micromagnetic simulations underlined the
different properties of both magnetic materials. Atomic force microscopy and scanning
electron microscopy images revealed nearly unchanged morphologies after stabilization
without mechanical fixation, which is in strong contrast to pure PAN nanofiber
mats. While carbonization at 500 °C left the morphology unaltered, as compared
with the stabilized samples, stronger connections between adjacent fibers were
formed during carbonization at 800 °C, which may be supportive of magnetic data
transmission.
article_number: '1552'
article_type: original
author:
- first_name: Nadine
full_name: Fokin, Nadine
last_name: Fokin
- first_name: Timo
full_name: Grothe, Timo
id: '221330'
last_name: Grothe
orcid: 0000-0002-9099-4277
orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-9099-4277/work/94763644
- first_name: Al
full_name: Mamun, Al
last_name: Mamun
- first_name: Marah
full_name: Trabelsi, Marah
last_name: Trabelsi
- first_name: Michaela
full_name: Klöcker, Michaela
last_name: Klöcker
- first_name: Lilia
full_name: Sabantina, Lilia
last_name: Sabantina
- first_name: Christoph
full_name: Döpke, Christoph
last_name: Döpke
- first_name: Tomasz
full_name: Blachowicz, Tomasz
last_name: Blachowicz
- first_name: Andreas
full_name: Hütten, Andreas
last_name: Hütten
- first_name: Andrea
full_name: Ehrmann, Andrea
id: '223776'
last_name: Ehrmann
orcid: 0000-0003-0695-3905
orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94763646
citation:
alphadin: 'Fokin,
Nadine ; Grothe, Timo ; Mamun, Al ; Trabelsi,
Marah ; Klöcker, Michaela
; Sabantina, Lilia ; Döpke,
Christoph ; Blachowicz, Tomasz
; u. a.: Magnetic Properties of Electrospun Magnetic Nanofiber Mats after
Stabilization and Carbonization. In: Materials Bd. 13 (2020), Nr. 7'
ama: Fokin N, Grothe T, Mamun A, et al. Magnetic Properties of Electrospun Magnetic
Nanofiber Mats after Stabilization and Carbonization. Materials. 2020;13(7).
doi:10.3390/ma13071552
apa: Fokin, N., Grothe, T., Mamun, A., Trabelsi, M., Klöcker, M., Sabantina, L.,
… Ehrmann, A. (2020). Magnetic Properties of Electrospun Magnetic Nanofiber Mats
after Stabilization and Carbonization. Materials, 13(7). https://doi.org/10.3390/ma13071552
bibtex: '@article{Fokin_Grothe_Mamun_Trabelsi_Klöcker_Sabantina_Döpke_Blachowicz_Hütten_Ehrmann_2020,
title={Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization
and Carbonization}, volume={13}, DOI={10.3390/ma13071552},
number={71552}, journal={Materials}, author={Fokin, Nadine and Grothe, Timo and
Mamun, Al and Trabelsi, Marah and Klöcker, Michaela and Sabantina, Lilia and Döpke,
Christoph and Blachowicz, Tomasz and Hütten, Andreas and Ehrmann, Andrea}, year={2020}
}'
chicago: Fokin, Nadine, Timo Grothe, Al Mamun, Marah Trabelsi, Michaela Klöcker,
Lilia Sabantina, Christoph Döpke, Tomasz Blachowicz, Andreas Hütten, and Andrea
Ehrmann. “Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization
and Carbonization.” Materials 13, no. 7 (2020). https://doi.org/10.3390/ma13071552.
ieee: N. Fokin et al., “Magnetic Properties of Electrospun Magnetic Nanofiber
Mats after Stabilization and Carbonization,” Materials, vol. 13, no. 7,
2020.
mla: Fokin, Nadine, et al. “Magnetic Properties of Electrospun Magnetic Nanofiber
Mats after Stabilization and Carbonization.” Materials, vol. 13, no. 7,
1552, 2020, doi:10.3390/ma13071552.
short: N. Fokin, T. Grothe, A. Mamun, M. Trabelsi, M. Klöcker, L. Sabantina, C.
Döpke, T. Blachowicz, A. Hütten, A. Ehrmann, Materials 13 (2020).
date_created: 2021-01-03T16:31:45Z
date_updated: 2021-06-01T09:07:50Z
department:
- _id: '103'
doi: 10.3390/ma13071552
file:
- access_level: open_access
content_type: application/pdf
creator: aehrmann
date_created: 2021-01-03T16:31:11Z
date_updated: 2021-01-03T16:31:11Z
file_id: '655'
file_name: _2020_Fokin_materials13_1552_v2.pdf
file_size: 5060954
relation: main_file
success: 1
file_date_updated: 2021-01-03T16:31:11Z
funded_apc: '1'
has_accepted_license: '1'
intvolume: ' 13'
issue: '7'
keyword:
- ferrimagnetic materials
- superparamagnetism
- magnetic hysteresis
- magnetic materials
- magnetic nanoparticles
- nanocomposites
- nanowires
language:
- iso: eng
oa: '1'
publication: Materials
publication_identifier:
issn:
- 1996-1944
publication_status: published
quality_controlled: '1'
status: public
title: Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization
and Carbonization
type: journal_article
user_id: '237837'
volume: 13
year: '2020'
...
---
_id: '629'
abstract:
- lang: eng
text: Electrospinning can be used to create nanofibers from diverse polymers
in which also other materials can be embedded. Inclusion of magnetic nanoparticles,
for example, results in preparation of magnetic nanofibers which are usually isotropically
distributed on the substrate. One method to create a preferred direction is using
a spinning cylinder as the substrate, which is not always possible, especially
in commercial electrospinning machines. Here, another simple technique to partly
align magnetic nanofibers is investigated. Since electrospinning works in a strong
electric field and the fibers thus carry charges when landing on the substrate,
using partly conductive substrates leads to a current flow through the conductive
parts of the substrate which, according to Ampère’s right-hand grip rule, creates
a magnetic field around it. We observed that this magnetic field, on the other
hand, can partly align magnetic nanofibers perpendicular to the borders of the
current flow conductor. We report on the first observations of electrospinning
magnetic nanofibers on partly conductive substrates with some of the conductive
areas additionally being grounded, resulting in partly oriented magnetic nanofibers.
article_number: '47'
article_type: original
author:
- first_name: Jan Lukas
full_name: Storck, Jan Lukas
id: '221157'
last_name: Storck
orcid: 0000-0002-6841-8791
orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-6841-8791/work/95037503
- first_name: Timo
full_name: Grothe, Timo
id: '221330'
last_name: Grothe
orcid: 0000-0002-9099-4277
orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-9099-4277/work/94759559
- first_name: Al
full_name: Mamun, Al
last_name: Mamun
- first_name: Lilia
full_name: Sabantina, Lilia
last_name: Sabantina
- first_name: Michaela
full_name: Klöcker, Michaela
last_name: Klöcker
- first_name: Tomasz
full_name: Blachowicz, Tomasz
last_name: Blachowicz
- first_name: Andrea
full_name: Ehrmann, Andrea
id: '223776'
last_name: Ehrmann
orcid: 0000-0003-0695-3905
orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94763503
citation:
alphadin: 'Storck, Jan Lukas ; Grothe, Timo ; Mamun,
Al ; Sabantina, Lilia ; Klöcker, Michaela ; Blachowicz,
Tomasz ; Ehrmann, Andrea:
Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas. In: Materials
Bd. 13 (2019), Nr. 1'
ama: Storck JL, Grothe T, Mamun A, et al. Orientation of Electrospun Magnetic Nanofibers
Near Conductive Areas. Materials. 2019;13(1). doi:10.3390/ma13010047
apa: Storck, J. L., Grothe, T., Mamun, A., Sabantina, L., Klöcker, M., Blachowicz,
T., & Ehrmann, A. (2019). Orientation of Electrospun Magnetic Nanofibers Near
Conductive Areas. Materials, 13(1). https://doi.org/10.3390/ma13010047
bibtex: '@article{Storck_Grothe_Mamun_Sabantina_Klöcker_Blachowicz_Ehrmann_2019,
title={Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas},
volume={13}, DOI={10.3390/ma13010047},
number={147}, journal={Materials}, author={Storck, Jan Lukas and Grothe, Timo
and Mamun, Al and Sabantina, Lilia and Klöcker, Michaela and Blachowicz, Tomasz
and Ehrmann, Andrea}, year={2019} }'
chicago: Storck, Jan Lukas, Timo Grothe, Al Mamun, Lilia Sabantina, Michaela Klöcker,
Tomasz Blachowicz, and Andrea Ehrmann. “Orientation of Electrospun Magnetic Nanofibers
Near Conductive Areas.” Materials 13, no. 1 (2019). https://doi.org/10.3390/ma13010047.
ieee: J. L. Storck et al., “Orientation of Electrospun Magnetic Nanofibers
Near Conductive Areas,” Materials, vol. 13, no. 1, 2019.
mla: Storck, Jan Lukas, et al. “Orientation of Electrospun Magnetic Nanofibers Near
Conductive Areas.” Materials, vol. 13, no. 1, 47, 2019, doi:10.3390/ma13010047.
short: J.L. Storck, T. Grothe, A. Mamun, L. Sabantina, M. Klöcker, T. Blachowicz,
A. Ehrmann, Materials 13 (2019).
date_created: 2021-01-03T13:37:22Z
date_updated: 2021-06-06T07:14:37Z
department:
- _id: '103'
doi: 10.3390/ma13010047
file:
- access_level: open_access
content_type: application/pdf
creator: aehrmann
date_created: 2021-01-03T13:36:48Z
date_updated: 2021-01-03T13:36:48Z
file_id: '630'
file_name: _2020_Storck_materials13_47.pdf
file_size: 5339358
relation: main_file
success: 1
file_date_updated: 2021-01-03T13:36:48Z
funded_apc: '1'
has_accepted_license: '1'
intvolume: ' 13'
issue: '1'
keyword:
- electrospinning
- magnetic nanofibers
- magnetite
- magnetic field lines
- Ampère’s right-hand grip rule
- Maxwell equations
language:
- iso: eng
oa: '1'
publication: Materials
publication_identifier:
issn:
- 1996-1944
publication_status: published
quality_controlled: '1'
status: public
title: Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas
type: journal_article
user_id: '237837'
volume: 13
year: '2019'
...
---
_id: '633'
abstract:
- lang: eng
text: Conductive nanofiber mats can be used in a broad variety of applications,
such as electromagnetic shielding, sensors, multifunctional textile surfaces,
organic photovoltaics, or biomedicine. While nanofibers or nanofiber from pure
or blended polymers can in many cases unambiguously be prepared by electrospinning,
creating conductive nanofibers is often more challenging. Integration of conductive
nano-fillers often needs a calcination step to evaporate the non-conductive polymer
matrix which is necessary for the electrospinning process, while conductive polymers
have often relatively low molecular weights and are hard to dissolve in common
solvents, both factors impeding spinning them solely and making a spinning agent
necessary. On the other hand, conductive coatings may disturb the desired porous
structure and possibly cause problems with biocompatibility or other necessary
properties of the original nanofiber mats. Here we give an overview of the most
recent developments in the growing field of conductive electrospun nanofiber mats,
based on electrospinning blends of spinning agents with conductive polymers or
nanoparticles, alternatively applying conductive coatings, and the possible applications
of such conductive electrospun nanofiber mats.
article_number: '152'
article_type: review
author:
- first_name: Tomasz
full_name: Blachowicz, Tomasz
last_name: Blachowicz
- first_name: Andrea
full_name: Ehrmann, Andrea
last_name: Ehrmann
date_created: 2021-01-03T13:40:47Z
date_updated: 2021-01-18T15:32:28Z
ddc:
- '620'
department:
- _id: '103'
doi: 10.3390/ma13010152
file:
- access_level: open_access
content_type: application/pdf
creator: aehrmann
date_created: 2021-01-03T13:40:15Z
date_updated: 2021-01-03T13:40:15Z
file_id: '634'
file_name: _2020_Blachowicz_materials13_152.pdf
file_size: 6657336
relation: main_file
success: 1
file_date_updated: 2021-01-03T13:40:15Z
funded_apc: '1'
has_accepted_license: '1'
intvolume: ' 13'
issue: '1'
keyword:
- electrospinning
- conductive nanofibers
- conductive solution
- conductive polymers
- conductive coating
language:
- iso: eng
oa: '1'
publication: Materials
publication_identifier:
issn:
- 1996-1944
publication_status: published
quality_controlled: '1'
status: public
title: Conductive Electrospun Nanofiber Mats
type: journal_article
user_id: '223776'
volume: 13
year: '2019'
...