Welcome on Andrea Ehrmann's website!

 

News

 

2019 - September 12

The first report on vertical farming on vertically mounted textile fabrics is published:

R. Böttjer, J. L. Storck, D. Vahle, B. Brockhagen, T. Grothe, S. Herbst, K.-J. Dietz, A. Rattenholl, F. Gudermann, A. Ehrmann
Influence of textile and environmental parameters on plant growth on vertically mounted knitted fabrics
Tekstilec 62, 200-207 (2019)

 

2019 - August 22

How can the low pH values necessary for good anthocyanin performance in DSSCs be avoided?

I. Juhász Junger, S. Udomrungkhajornchai, N. Grimmelsmann, T. Blachowicz, A. Ehrmann
Effect of caffeine copigmentation of anthocyanin dyes on the DSSC efficiency
Materials 12, 2692 (2019)

 

2019 - August 18

One step further to textile-based solar cells:

S. Müller, D. Wieschollek, I. Juhász Junger, E. Schwenzfeier-Hellkamp, A. Ehrmann
Back electrodes of dye-sensitized solar cells on textile fabrics
Optik - International Journal for Light and Electron Optics 198, 163243 (2019)

 

2019 - August 13

Here we describe how to detect different natural and even man-made fibers unambiguously by laser diffraction patterns:

A. Dörfert, H. Spexard, A. Al-Manadili, A. Housin, D. Steinhäußer, J. Fiedler, A. Ehrmann, R. Kaschuba
Laser diffraction images for determination of natural and man-made fibers
Optik - International Journal for Light and Electron Optics 197, 163212 (2019)

 

2019 - July 20

In our recent paper, we have investigated whether square cobalt nano-frames offer new possibilities to create quaternary of higher-order storage devices for new hard disk architectures:

T. Blachowicz, D. Kosmalska, C. Döpke, H. Leiste, L. Hahn, A. Ehrmann
Varying steps in hysteresis loops of Co square nano-frames
J. Magn. Magn. Mater. 491, 165619 (2019)

 

2019 - July 15

Letting the edible mushroom Pleurotus ostreatus grow on knitted fabrics works different from nanofiber mats as substrates:

J. Helberg, M. Klöcker, L. Sabantina, J. L. Storck, R. Böttjer, B. Brockhagen, F. Kinzel, A. Rattenholl, A. Ehrmann
Growth of Pleurotus ostreatus on different textile materials for vertical farming
Materials 12, 2270 (2019)

 

2019 - July 9

Adding TiO2 to electrospun PAN nanofibers can be challenging, but also supportive for maintaining the morphology during carbonization:

L. Sabantina, R. Böttjer, D. Wehlage, T. Grothe, M. Klöcker, F. J. García Mateos, J. Rodríguez-Mirasol, T. Cordero, A. Ehrmann
Morphological study of stabilization and carbonization of PAN/TiO2 nanofiber mats
Journal of Engineered Fibers and Fabrics 14, 1558925019862242 (2019)

 

2019 - July 4

In our recent paper we report on a possibility to use TiO2 in DSSCs without sintering:

A. Mamun, M. Trabelsi, M. Klöcker, L. Sabantina, C. Großerhode, T. Blachowicz, G. Grötsch, C. Cornelißen, A. Streitenberger, A. Ehrmann
Electrospun nanofiber mats with embedded non-sintered TiO2 for dye-sensitized solar cells (DSSCs)
Fibers 7, 60 (2019)

 

2019 - May 6

Our new book reports on recent advances in spintronics:

T. Blachowicz and A. Ehrmann
Spintronics - Theory, Modelling, Devices
De Gryter, ISBN 978-3-11-049063-3 (e-book) / 978-3-11-049062-6 (print), 2019

 

2019 - May 1

Colored light sources strongly modify the efficiency of DSSCs:

A. Ahmedi, A. Wiens, I. Juhász Junger, D. Werner, E. Schwenzfeier-Hellkamp, A. Ehrmann
Influence of grey and color filters on the electrical properties of the dye-sensitized solar cells
Optik - International Journal for Light and Electron Optics 186, 309-314 (2019)

 

2019 - April 15

Sterilization of electrospun nanofiber mats needs special techniques which strongly influence the growth of animal cells on them:

D. Wehlage, H. Blattner, L. Sabantina, R. Böttjer, T. Grothe, A. Rattenholl, F. Gudermann, D. Lütkemeyer, A. Ehrmann
Sterilization of PAN/Gelatin Nanofibrous Mats for Cell Growth
Tekstilec 62, 78-88 (2019)

 

2019 - March 30

Magnetic Fibonacci nano-spirals as a new possibility to store data:

P. Kern, C. Döpke, T. Blachowicz, P. Steblinski, A. Ehrmann
Magnetization reversal in ferromagnetic Fibonacci nano-spirals
J. Magn. Magn. Mater. 484, 37-41 (2019)

 

2019 - March 28

In our latest review, we give an overview of interesting new materials for textile-based DSSCs:

A. Ehrmann, T. Blachowicz
Recent coating materials for textile-based solar cells
AIMS Materials Science 6, 234-251 (2019)

 

2019 - March 27

A large study on teas as possible dyes for DSSCs was performed on specialized conductive foils:

S. Kohn, C. Großerhode, J. L. Storck, G. Grötsch, C. Cornelißen, A. Streitenberger, C. Grassmann, A. Schwarz-Pfeiffer, A. Ehrmann
Commercially available teas as possible dyes for dye-sensitized solar cells
Optik - International Journal for Light and Electron Optics 185, 178-182 (2019)

 

2019 - March 22

Mushroom mycelium changes its morphology when growing on nanofiber mats:

L. Sabantina, F. Kinzel, T. Hauser, A. Többer, M. Klöcker, C. Döpke, R. Böttjer, D. Wehlage, A. Rattenholl, A. Ehrmann
Comparative study of Pleurotus ostreatus mushroom grown on modified PAN nanofiber mats
Nanomaterials 9, 475 (2019)

 

2019 - March 12

Our new paper on the physical properties of bandages predicts the sub-bandage pressure during compression therapy:

F. Tamoue, A. Ehrmann, T. Blachowicz
Predictability of sub-bandage pressure in compression therapy based on material properties
Textile Research Journal 89, 4410-4424 (2019)

 

2019 - February 20

Quite a new topic for us and unexpectedly also for other research groups: vertical farming on textile fabrics. Some first ideas are given here:

A. Ehrmann
On the possible use of textile fabrics for vertical farming
Tekstilec 62, 34-41 (2919)

 

2019 - February 15

Wet relaxation of nanofiber mats was investigated for the first time by our group, with unexpected results:

T. Grothe, L. Sabantina, M. Klöcker, I. Juhász Junger, C. Döpke and A. Ehrmann
Wet relaxation of electrospun nanofiber mats
Technologies 7, 23 (2019)

 

2019 - February 13

Our most recent article investigates the influence of a usually ignored factor on DSSC performance:

K. Gossen, A. Ehrmann
Influence of FTO glass cleaning on DSSC performance
Optik - International Journal for Light and Electron Optics 183, 253-256 (2019)

 

2019 - January 16

Here we report for the first time on stabilization for carbonization of PAN nanofiber mats needleless electrospun from DMSO:

L. Sabantina, M. Klöcker, M. Wortmann, J. Rodríguez-Mirasol, T. Cordero, E. Moritzer, K. Finsterbusch, A. Ehrmann
Stabilization of PAN nanofiber mats obtained by needleless electrospinning using DMSO as solvent
Journal of Industrial Textiles, online first (2019)

 

2019 - January 15

Electrospinning allows for preparing a broad spectrum of nanofiber mats to nanomembranes with significantly varying water vapor permeability:

L. Sabantina, L. Hes, J. Rodríguez-Mirasol, T. Cordero and A. Ehrmann
Water vapor permeability through PAN nanofiber mat with varying membrane-like areas
FIBRES & TEXTILES in Eastern Europe 133, 12-15 (2019)

 

2019 - January 12

In a recent project we examine possibilities to create magnetic nanofiber mats and use them for data storage:

C. Döpke, T. Grothe, P. Steblinski, M. Klöcker, L. Sabantina, D. Kosmalska, T. Blachowicz, A. Ehrmann
Magnetic nanofiber mats for data storage and transfer
Nanomaterials 9, 92 (2019)

 

2019 - January 02

Electrospinning is often performed from highly toxic or corrosive solvents, so low-toxic solvents are highly interesting:

M. Wortmann, N. Freese, L. Sabantina, R. Petkau, F. Kinzel, A. Gölzhäuser, E. Moritzer, B. Hüsgen, A. Ehrmann
New Polymers for Needleless Electrospinning from Low-toxic Solvents
Nanomaterials 9, 52 (2019)

 

2018 - December 19

Using natural dyes on textile fabrics is a challenge, but enables interesting optical effects:

A. Fröse, K. Schmidtke, T. Sukmann, I. Juhász Junger, A. Ehrmann
Application of natural dyes on diverse textile materials
Optik - International Journal for Light and Electron Optics 181, 215-219 (2011)

 

2018 - December 10

Again new results of micromagnetic simulations, this time showing different double-vortex states in circular nanodots:

A. Ehrmann, T. Blachowicz
Vortex and double-vortex nucleation during magnetization reversal in Fe nanodots of different dimensions
J. Magn. Magn Mater. 475, 727-733 (2019)

 

2018 - December 07

In our latest paper, we investigate the adhesion of 3D printed objects especially on textile fabrics used for garments:

T. Spahiu, M. Al-Arabiyat, Y. Martens, A. Ehrmann, E. Piperi and E. Shehi
Adhesion of 3D printing polymers on textile fabrics for garment production
IOP Conf. Ser.: Mater. Sci. Eng. 459 , 012065 (2018)

 

2018 - December 01

Our next paper on dye-sensitized solar cells investigates Aloe vera gel as a possible dye:

K. Gossen, J. L. Storck, A. Ehrmann
Influence of solvents on Aloe vera gel performance in dye-sensitized solar cells
Optik - International Journal for Light and Electron Optics 180, 615-618 (2018)

 

2018 - November 06

Two new papers were published today, dealing with nanomagnetism and dye-sensitized solar cells:

A. Ehrmann, T. Blachowicz
Systematic study of magnetization reversal in square Fe nanodots of varying dimensions in different orientations
Hyperfine Interactions 239, 8 (2018)

B. Bohnenkamp, J.-H. Linnemann, I. Juhász Junger, E. Schwenzfeier-Hellkamp, A. Ehrmann
Influence of different solvents on the electrical properties of dye-sensitized solar cells
Journal of Renewable and Sustainable Energy 10, 063701 (2018)

 

2018 - October 30

A new method is suggested to increase the adhesion of 3D printed objects on textile fabrics:

L. Unger, M. Scheideler, P. Meyer, J. Harland, A. Görzen, M. Wortmann, A. Dreyer, A. Ehrmann
Increasing Adhesion of 3D Printing on Textile Fabrics by Polymer Coating
Tekstilec 61, 265-271 (2018)

 

2018 - October 23

The different methods to coat DSSC counter electrodes with graphite were investigated - with the unexpected finding that a typical textile method works best:

F. Hölscher, P.-R. Trümper, I. Juhász Junger, E. Schwenzfeier-Hellkamp, A. Ehrmann
Application Methods for Graphite as Catalyzer in Dye-Sensitized Solar Cells
Optik - International Journal for Light and Electron Optics 178, 1276-1279 (2018)

 

2018 - October 12

Have you ever wondered whether the holes from acid splashes in your lab coat could be avoided? We have investigated whether a hydrophobic finishing would help:

E. Hilenberg, E. Taskin, A. Ehrmann
Increased acid-resistance of lab-coats by hydrophobic finishing
International Journal of Clothing Science and Technology 30, 784-789 (2018)

 

2018 - October 06

Efficiencies of Dye-sensitized solar cells are often given erroneously too large, a problem addressed in our recent comment:

A. Ehrmann, T. Blachowicz
Comment on ‘Dye-sensitized solar cells using Aloe Vera and Cladode of Cactus extracts as natural sensitizers’ [Chem. Phys. Lett. 679 (2017) 97-101]
Chem. Phys. Lett., online first (2018)

 

2018 - September 26

Using micromagnetic simulations, we have investigated the bending radius influence of the magnetic properties of nanofibers which could be used for neuromorphic computing:

T. Blachowicz, A. Ehrmann
Magnetization reversal in bent nanofibers of different cross-sections
J. Appl. Phys. 124, 152112 (2018)

 

2018 - September 25

The influence of different light conditions on the performance of DSSCs is subject of our recent paper:

I. Juhász Junger, D. Werner, E. Schwenzfeier-Hellkamp, A. Ehrmann
Influence of illumination spectra on DSSC performance
Optik - International Journal for Light and Electron Optics, 177, 8-12 (2018)

 

2018 - September 20

Our new paper reports on investigations of ultrasonic welding as a possible joining process for nanofiber mats:

E. Wirth, L. Sabantina, M. O. Weber, K. Finsterbusch, A. Ehrmann
Preliminary study of ultrasonic welding as a joining process for electrospun nanofiber mats
Nanomaterials 8, 746 (2018)

 

2018 - September 04

In our recent paper, we report on electrospun nanofiber mats as counter-electrodes for DSSCs:

I. Juhász Junger, D. Wehlage, R. Böttjer, T. Grothe, L. Juhász, C. Grassmann, T. Blachowicz and A. Ehrmann
Dye-sensitized solar cells with electrospun nanofiber mat-based counter electrodes
Materials 11, 1604 (2018)

 

2018 - August 30

Our next article reports on the stabilization of electrospun nanofibers from PAN/gelatin blends:

L. Sabantina, D. Wehlage, M. Klöcker, A. Mamun, T. Grothe, F. J. García-Mateos, J. Rodríguez-Mirasol, T. Cordero, K. Finsterbusch, A. Ehrmann
Stabilization of electrospun PAN/gelatin nanofiber mats for carbonization
Journal of Nanomaterials 2018, 6131085 (2018)

 

2018 - August 17

Different graphite coating methods of DSSC counter electrodes are compared in our most recent paper:

I. Juhász Junger, C. Großerhode, J. L. Storck, S. Kohn, T. Grethe, C. Grassmann, A. Schwarz-Pfeiffer, N. Grimmelsmann, H. Meissner, T. Blachowicz, and A. Ehrmann
Influence of graphite-coating methods on the DSSC performance
Optik - International Journal for Light and Electron Optics, online first (2018)

 

2018 - August 09

Our new article reports on textile pretreatments to increase the adhesion of 3D printed objects:

T. Kozior, C. Döpke, N. Grimmelsmann, I. Juhász Junger, and A. Ehrmann
Influence of fabric pretreatment on adhesion of 3D printed material on textile substrates
Advances in Mechanical Engineering 10, 1687814018792316 (2018)

 

2018 - August 03

Our recent paper suggests a new method to test the abrasion of motorcycle protective clothing:

N. Bollschweiler, S. Marzen, A. Ehrmann
New Method to Measure Abrasion of Motorcyclist Protective Clothing
Tekstilec 61, 152-161 (2018)

 

2018 - July 30

A new way to increase abrasion resistance of textile fabrics is described in our next article:

M. Wortmann, N. Frese, L. Hes, A. Gölzhäuser, E. Moritzer, A. Ehrmann
Improved abrasion resistance of textile fabrics due to polymer coatings
Journal of Industrial Textiles 49, 572-583 (2019)

 

2018 - July 04

Our latest article shows a new method to stabilize PAN nanofiber mats without morphological changes and additionally to create carbon/metal composites in a novel way:

L. Sabantina, M. Ángel Rodríguez-Cano, M. Klöcker, F. J. García-Mateos, J. J. Ternero-Hidalgo, A. Mamun, F. Beermann, M. Schwakenberg, A.-L. Voigt, J. Rodríguez Mirasol, T. Cordero, A. Ehrmann
Fixing PAN nanofiber mats during stabilization for carbonization and creating novel metal/carbon composites
Polymers 10, 735 (2018)

 

2018 - June 26

Partially waterproof electrospun biopolymer nanofibers and nano-coatings with novel morphologies:

J. Banner, M. Dautzenberg, T. Feldhans, J. Hofmann, P. Plümer, A. Ehrmann
Water Resistance and Morphology of Electrospun Gelatine Blended with Citric Acid and Coconut Oil
Tekstilec 61, 129-135 (2018)

 

2018 - June 19

Our latest article reports on a new conductive coating:

D. Vahle, R. Böttjer, K. Heyden, A. Ehrmann
Conductive polyacrylonitrile/graphite textile coatings
AIMS Materials Science 5, 551-558 (2018)

 

2018 - May 15

My new article about teaching textile technologies to non-textile engineering students was just published:

A. Ehrmann
Teaching textile technologies for non-textile engineers
eLearning & Software for Education 2018(3), 154-157 (2018)

 

2018 - April 30

A patent was granted:

T. Blachowicz, A. Ehrmann
Sposób wykonania i przemagnesowania ultracienkich komórek ferromagnetycznych tworzących macierz dwubitowych, czterostanowych komórek pamięci magnetycznej
A method of preparation and demagnetization of ultrathin ferromagnetic cells creating a matrix of two-bits, four-states magnetic memory cells
Patent application PL000000405487A1, 30-09-2013, PL 228717 B1, 30-04-2018

 

2018 - April 24

Our new paper depicts the influence of spinning parameters on needleless electrospun nanofiber mats:

L. Sabantina, J. R. Mirasol, T. Cordero, K. Finsterbusch, and A. Ehrmann
Investigation of Needleless Electrospun PAN Nanofiber Mats
AIP Conference Series 1952, 020085 (2018)

 

2018 - April 22

The next article deals with the dyes used in DSSCs:

B. Bohnenkamp, J.-H. Linnemann, I. Juhász Junger, E. Schwenzfeier-Hellkamp, A. Ehrmann
Influence of dyes and dying process parameters on the electrical properties of dye-sensitized solar cells
Optik – International Journal for Light and Electron Optics 168, 282-286 (2018)

 

2018 - March 19

Our recent research about typical materials for textile-based batteries has been published:

R. Resuli, I. Turhan, A. Ehrmann, T. Blachowicz
Textile-based batteries with nanofiber interlayer
AIMS Energy 6, 261-268 (2018)

 

2018 - March 08

The results of an earlier project to investigate the washing resistance of PU-based conductive coatings are now published:

P. Schäl, I. Juhász Junger, N. Grimmelsmann, A. Ehrmann
Development of graphite-based conductive textile coatings
Journal of Coatings Technology and Research, online first (2018)

 

2018 - March 08

In our latest article we examine the effect of electrospinning blends from water-resistent and water-soluble polymers:

D. Wehlage, R. Böttjer, T. Grothe, A. Ehrmann
Electrospinning water-soluble/insoluble polymer blends
AIMS Materials Science 5, 190-200 (2018)

 

2018 - February 23

Our most recent article deals with the influence of salts on the electrospinnability of PEG solutions:

T. Blomberg, N. Borgmeier, L. T. Kramer, P. Witzke, T. Grothe and A. Ehrmann
Influence of Salts on the Spinnability of Poly(ethylene glycol)
Advances in Engineering Research 878, 313-317 (2018)

 

2018 - February 08

In the next article about dye-sensitized solar cells, we examine possibilities to increase reproducibility in lab experiments:

F. Hölscher, P.-R. Trümper, I. Juhász Junger, E. Schwenzfeier-Hellkamp, A. Ehrmann
Raising Reproducibility in Dye-Sensitized Solar Cells under Laboratory Conditions
Journal of Renewable and Sustainable Energy 10, 013506 (2018)

 

2018 - February 08

Finally, our paper about increasing the adhesion between textile fabrics and imprinted 3D materials is published:

N. Grimmelsmann, M. Lutz, M. Korger, H. Meissner, A. Ehrmann
Adhesion of 3D printed material on textile substrates
Rapid Prototyping Journal 24, 166-170 (2018)

 

2018 - February 02

Our new article investigates the influence of refilling on the longevity of dye-sensitized solar cells:

I. Juhász Junger, A. Tellioglu, A. Ehrmann
Refilling DSSCs as a method to ensure longevity
Optik – International Journal for Light and Electron Optics, online first (2018)

 

2017 - December 01

Two papers about our main research areas have just been published:

N. Grimmelsmann, M. Lutz, M. Korger, H. Meissner, A. Ehrmann
Adhesion of 3D printed material on textile substrates
Rapid Prototyping Journal, online first (2017)

T. Grothe, D. Wehlage, T. Böhm, A. Remche, A. Ehrmann
Needleless Electrospinning of PAN Nanofibre Mats
Tekstilec 60, 290-295 (2017)

 

2017 - November 25

In our recent article, we examine an unusual anisotropy in the exchange bias system Co/CoO:

A. Ehrmann, T. Blachowicz
Angle and rotational direction dependent horizontal loop shift in epitaxial Co/CoO bilayers on MgO(100)
AIP Advances 7, 115223 (2017)

 

2017 - November 25

The proceedings of the Nanoconference 2017 in Dortmund/Germany are finally published and contain two papers of our research group about different topics:

T. Grothe, N. Grimmelsmann, S. V. Homburg, A. Ehrmann
Possible applications of nano-spun fabrics and materials
Elsevier Materials Today: Proceedings 4, S154–S159 (2017)

T. Blachowicz, A. Ehrmann
Square nano-magnets as bit-patterned media with doubled possible data density
Elsevier Materials Today: Proceedings 4, S226-S231 (2017)

 

2017 - November 22

A comprehensive study about needleless electrospinning of PEG has been published:

T. Grothe, J. Brikmann, H. Meissner, A. Ehrmann
Influence of Solution and Spinning Parameters on Nanofiber Mat Creation of Poly(ethylene oxide) by Needleless Electrospinning
Materials Science 23, 342-349 (2017)

 

2017 - November 09

In the proceedings of the AUTEX conference, four papers of our textile research group are published:

M. C. Bier, S. Kohn, A. Stierand, N. Grimmelsmann, S. V. Homburg, A. Rattenholl, and A. Ehrmann
Investigation of eco-friendly casein fibre production methods
IOP Conference Series: Materials Science and Engineering 254, 192004 (2017)

T. Spahiu, S. Fafenrot, N. Grimmelsmann, E. Piperi, E. Shehi and A. Ehrmann
Varying fabric drape by 3D-imprinted patterns for garment design
IOP Conference Series: Materials Science and Engineering 254, 172023 (2017)

N. Grimmelsmann, T. Grothe, S. V. Homburg, A. Ehrmann
Electrospinning and stabilization of chitosan nanofiber mats
IOP Conference Series: Materials Science and Engineering 254, 102006 (2017)

M. Normann, T. Grethe, K. Zöll, A. Ehrmann, A. Schwarz-Pfeiffer
Development of 2D and 3D structured textile batteries processing conductive material with Tailored Fiber Placement (TFP)
IOP Conference Series: Materials Science and Engineering 254, 072016 (2017)

 

2017 - October 19

In our recent article we discuss the mechanical properties of FDM printed polymer-metal blends:

S. Fafenrot, N. Grimmelsmann, M. Wortmann and A. Ehrmann
Three-Dimensional (3D) Printing of Polymer-Metal Hybrid Materials by Fused Deposition Modeling
Materials 10, 1199 (2017)

 

2017 - October 16

Our new paper about magnetization reversal mechanisms in fourfold nanorings has just been published:

A. Ehrmann, T. Blachowicz
Magnetization reversal in ferromagnetic nano-rings of fourfold symmetries
Advances in Materials Science and Engineering 2017, 3149682 (2017)

 

2017 - September 08

Two new articles have just been published, dealing with the topics recently focused in our lab - 3D printing combined with textiles, and electrospinning biopolymers:

N. Grimmelsmann, S. V. Homburg, A. Ehrmann
Needleless electrospinning of pure and blended chitosan
IOP Conference Series: Materials Science and Engineering 225, 012098 (2017)

Y. Martens, A. Ehrmann
Composites of 3D-printed polymers and textile fabrics
IOP Conference Series: Materials Science and Engineering 225, 012292 (2017)

 

2017 - August 20

Our recent article examines the influence of the inter-particle distance in magnetic clusters:

A. Ehrmann, T. Blachowicz
Influence of the distance between nanoparticles in clusters on the magnetization reversal process
Journal of Nanomaterials 2017, 5046076 (2017)

 

2017 - August 10

In our new article we discuss the mechanics of elastic and inelastic compression textiles:

F. Tamoue, A. Ehrmann
First principle study: parametric investigation of the mechanics of elastic and inelastic textile materials for the determination of the compression therapy efficacy
Textile Research Journal 88, 2506-2515 (2018)

 

2017 - August 09

An insight in needleless electrospinning of PEO nanofiber mats is given in our next article:

T. Grothe, C. Großerhode, T. Hauser, P. Kern, K. Stute, A. Ehrmann
Needleless electrospinning of PEO nanofiber mats
Advances in Engineering Research 102, 54-58 (2017)

 

2017 - August 01

In our latest article, we discuss the possibility to use nanofiber mats for algae growth or as biotechnological filters:

C. Großerhode, D. Wehlage, T. Grothe, N. Grimmelsmann, S. Fuchs, J. Hartmann, P. Mazur, V. Reschke, H. Siemens, A. Rattenholl, S. V. Homburg, and A. Ehrmann
Investigation of microalgae growth on electrospun nanofiber mats
AIMS Bioengineering 4, 376-385 (2017)

 

2017 - July 07

Our next paper about electrospinning of chitosan blends has been published:

N. Grimmelsmann, S. V. Homburg, A. Ehrmann
Electrospinning chitosan blends for nonwovens with morphologies between nanofiber mat and membrane
IOP Conference Series: Materials Science and Engineering 213, 012007 (2017)

 

2017 - May 08

In our new article we discuss possibilities to refill DSSCs:

C. Hellert, C. Klemt, U. Scheidt, I. Juhász Junger, A. Ehrmann, E. Schwenzfeier-Hellkamp
Rehydrating dye sensitized solar cells
AIMS Energy 5, 397-403 (2017)

 

2017 - April 28

Measuring a 12 channel ECG with textile electrodes in underwear is the topic of our next paper:

S. Trummer, A. Ehrmann, A. Büsgen
Development of underwear with integrated 12 channel ECG for men and women
Autex Research Journal, online first (2017)

 

2017 - April 21

In our recent paper, we have evaluated relaxation mechanisms of knitted fabrics dependent on the fabric parameters:

E. Gsell, F. Heimlich, A. Ehrmann, M. O. Weber
Dependence of dry, wet and washing relaxation on knitted structures and fabric parameters
Industria Textila 68, 121-125 (2017)

 

2017 - April 17

Measuring MOKE is not only possible on flat, even surfaces, as we have shown now:

T. Blachowicz, A. Ehrmann, B. Mahltig
Magneto-optic measurements on uneven magnetic layers on cardboard
AIP Advances 7, 045306 (2017)

 

2017 - March 16

The next article about DSSCs on textile substrates has just been published:

I. Juhász Junger, S. V. Homburg, T. Grethe, A. Herrmann, J. Fiedler, A. Schwarz-Pfeiffer, T. Blachowicz, A. Ehrmann
Examination of the sintering process dependent properties of TiO2 on glass and textile substrates
Journal of Photonics for Energy 7, 015001

 

2017 - March 14

Our article investigating the pH value influence on DSSC properties is now published:

I. Juhász Junger, S. V. Homburg, H. Meissner, T. Grethe, A. Schwarz-Pfeiffer, J. Fiedler, A. Herrmann, T. Blachowicz, A. Ehrmann
Influence of the pH value of anthocyanins on the electrical properties of dye-sensitized solar cells
AIMS Energy 5, 258-267 (2017)

 

2017 - February 21

Our paper about the influence of clustering on magnetic nanoparticles is just published:

A. Ehrmann, T. Blachowicz
Interaction between magnetic nanoparticles in clusters
AIMS Materials Science 4, 383-390 (2017)

 

2017 - February 15

Two new papers about 3D micromagnetic simulations and textile-based batteries are published:

T. Blachowicz and A. Ehrmann
Micromagnetic investigation of low-symmetry 3D particles
IOP Conference Series: Materials Science and Engineering 175, 012057 (2017)

M. Normann, T. Grethe, A. Schwarz-Pfeiffer, and A. Ehrmann
Development and characterization of textile batteries
IOP Conference Series: Materials Science and Engineering 175, 012058 (2017)

 

2016 - December 21

Our article about the possibility to differentiate between different natural and man-made fibers without a microscope is now published:

A. Angelow, H. Bednorz, S. Böttcher, N. Schrader, A. Ehrmann
Optical differentiation between cashmere and other textile fibers by laser diffraction
Indian Journal of Fibre & Textile Research 41, 444-447

 

2016 - November 17

Our new book is published as e-book and hardcover:

A. Ehrmann and T. Blachowicz
Examination of Textiles with Mathematical and Physical Methods
Springer International Publishing, ISBN 978-3-319-47408-3 (E-book) / 978-3-319-47406-9 (Hardcover), 2016

 

2016 - October 01

Our article dealing with contacting electronics on textiles by 3D printing is published:

N. Grimmelsmann, Y. Martens, P. Schäl, H. Meissner, A. Ehrmann
Mechanical and Electrical Contacting of Electronic Components on Textiles by 3D Printing
Procedia Technology 26, 66-71 (2016)

 

2016 - September 06

Two new papers about magnetic nanoparticles and magnetic coatings on textiles were published:

T. Blachowicz, A. Ehrmann
Simulation of magnetic coatings on textile fibers
Journal of Physics: Conference Series 738, 012057 (2016)

T. Blachowicz, A. Ehrmann
Stability of magnetic nano-structures with respect to shape modifications
Journal of Physics: Conference Series 738, 012058 (2016)

 

2016 - August 09

Two new papers about smart textiles were published in a volume co-edited by me:

S. Aumann, A. Ehrmann, M. O. Weber (Ed.)
Proceedings of 48th Conference of the International Federation of Knitting Technologists (IFKT), 8–11 June 2016, Moenchengladbach, Germany
IOP Conference Series: Materials Science and Engineering 141 (2016)

A. Schwarz-Pfeiffer, M. Obermann, M. O. Weber and A. Ehrmann
Smarten up garments through knitting
IOP Conference Series: Materials Science and Engineering 141, 012008 (2016)

M. Obermann, M. Ellouz, S. Aumann, Y. Martens, P. Bartelt, M. Klöcker, T. Kordisch, A. Ehrmann and M. O. Weber
Non-destructive X-ray examination of weft knitted wire structures
IOP Conference Series: Materials Science and Engineering 141, 012007 (2016)

 

2016 - July 28

The results of our investigations of 3D printed auxetic forms on flexible substrates have been published:

N. Grimmelsmann, H. Meissner, A. Ehrmann
3D printed auxetic forms on knitted fabrics for adjustable permeability and mechanical properties
IOP Conference Series: Materials Science and Engineering 137, 012011 (2016)

 

2016 - April 29

Our new article about the sintering process of TiO2 in textile-based solar cells is published:

A. Herrmann, J. Fiedler, A. Ehrmann, T. Grethe, A. Schwarz-Pfeiffer, T. Blachowicz
Examination of the sintering process dependent micro- and nanostructure of TiO2 on textile substrates
Proc. SPIE 9898, Photonics for Solar Energy Systems VI, 98980S (2016)

 

2016 - April 24

Two articles dealing with nano-magnets are now published and freely available:

T. Blachowicz and A. Ehrmann
Stability of magnetic nano-structures against erroneous shape modifications
AIP Conf. Proc. 1727, 020004 (2016)

T. Blachowicz and A. Ehrmann
Magnetization reversal in 3D nano-structures of different shapes
AIP Conf. Proc. 1727, 020003 (2016)

 

2016 - March 30

Our article about a pseudo exchange-bias due to a rotational anisotropy is available now - for a limited time even for free:

A. Ehrmann, S. Komraus, T. Blachowicz, K. Domino, M.-K. Nees, P.-J. Jakobs, H. Leiste, M. Mathes, and M. Schaarschmidt
Pseudo exchange bias due to rotational anisotropy
J. Magn. Magn. Mat. 412, 7-10 (2016)

 

2016 - March 18

Our new paper about statistical analysis of fibrous structures is published:

T. Blachowicz, A. Ehrmann, K. Domino
Statistical analysis of digital images of periodic fibrous structures using generalized Hurst exponent distributions
Physica A: Statistical Mechanics and its Applications 452, 167-177 (2016)

 

2015 - September 24

Three new articles on one day:

A. Ehrmann, T. Blachowicz, H. Zghidi, M. O. Weber
Reliability of statistic evaluation of microscopic pictures taken from knitted fabrics
Journal of Physics: Conference Series 633, 012101 (2015)

T. Blachowicz, A. Ehrmann
Magnetization reversal modes in fourfold Co nano-wire systems
Journal of Physics: Conference Series 633, 012100 (2015)

C. Richter, S. Schmülling, A. Ehrmann, K. Finsterbusch
FDM printing of 3D forms with embedded fibrous materials
Design, Manufacturing and Mechatronics, pp. 961-969 (2015)

 

2015 - September 04

Two new articles in the areas of 3D printing and magnetic nano-objects are published:

A. Ehrmann, T. Blachowicz
Influence of shape and dimension on magnetic anisotropies and magnetization reversal of Py, Fe, and Co nano-objects with four-fold symmetry
AIP Advances 5, 097109 (2015)

L. Sabantina, F. Kinzel, A. Ehrmann, K. Finsterbusch
Combining 3D printed forms with textile structures - mechanical and geometrical properties of multi-material systems
IOP Conf. Series: Materials Science and Engineering 87, 012005 (2015)

 

2015 - April 28

Our new paper about experimental and theoretical examination of square nanowires is published:

A. Ehrmann, T. Blachowicz, S. Komraus, M.-K. Nees, P.-J. Jakobs, H. Leiste, M. Mathes, and M. Schaarschmidt
Magnetic properties of square Py nanowires: irradiation dose and geometry dependence
Journal of Applied Physics 117, 173903 (2015)

 

2015 - April 16

Our new article about the possibility to examine knitted fabric hairiness using a random walk approach is just published online:

A. Ehrmann, T. Blachowicz, K. Domino, S. Aumann, M. O. Weber, H. Zghidi
Examination of hairiness changes due to washing in knitted fabrics using a random walk approach (Abstract / pdf)
Text. Res. J., online first (2015)

 

2015 - April 09

The next article about our Ising-model spreadsheet analysis program is just published:

A. Ehrmann, T. Blachowicz, H. Zghidi
Spreadsheet analysis of stability and meta-stability of low-dimensional magnetic particles using Ising approach (Abstract / pdf)
European Journal of Physics 36, 035028 (2015)

 

2015 - March 29

Our new paper about water-repellent leather treatment etc. is just published:

M. Türk, A. Ehrmann & B. Mahltig
Water-, oil-, and soil-repellent treatment of textiles, artificial leather, and leather
Journal of the Textile Institute 106, 611-620 (2015)

 

2015 - March 22

A new manuscript is accepted for publication in the Textile Research Journal:

A. Ehrmann, T. Blachowicz, K. Domino, S. Aumann, M. O. Weber, H. Zghidi
Examination of hairiness changes due to washing in knitted fabrics using a random walk approach
Text. Res. J., accepted 22-03-2015

 

2015 - March 16

A new manuscript has been accepted for publication in the European Journal of Physics:

A. Ehrmann, T. Blachowicz, H. Zghidi
Spreadsheet analysis of stability and meta-stability of low-dimensional magnetic particles using Ising approach
European Journal of Physics, accepted 16-03-2015

 

2015 - February 26

Two new papers are accepted for publication in the Journal of Physics: Conference Series:

T. Blachowicz, A. Ehrmann, H. Zghidi, M. O. Weber
Reliability of statistic evaluation of microscopic pictures taken from knitted fabrics
Journal of Physics: Conference Series, accepted 26-02-2015

T. Blachowicz, A. Ehrmann
Magnetization reversal modes in fourfold Co nano-wire systems
Journal of Physics: Conference Series, accepted 26-02-2015

 

2015 - January 26

Two new conference papers are published in the Journal of Physics: Conference Series:

A. Ehrmann, T. Blachowicz
A simple model of hysteresis behavior using spreadsheet analysis
Journal of Physics: Conference Series 574, 012158 (2015)

T. Blachowicz, A. Ehrmann
Anatomy of Demagnetizing and Exchange Fields in Magnetic Nano-Dots Influenced by 3D Shape Modifications
Journal of Physics: Conference Series 574, 012054 (2015)

 

2015 - January 09

A new article about modeling textile magnetic structures is published online first:

A. Ehrmann, T. Blachowicz
Micromagnetic simulation of fibers and coatings on textiles
Journal of The Institution of Engineers (India): Series E, online first

 

2014 - November 27-28

Five new conference papers have been published in the proceedings of the Aachen-Dresden International Textile Conference.

 

2014 - October 18

During the German conference of women in physics, I was given the opportunity to present our newly-developed macrospin model of hysteresis loop shapes for different fourfold anisotropies:

A. Ehrmann, T. Blachowicz
Macrospin modeling of magnetization reversal processes in systems with different anisotropies
Deutsche Physikerinnentagung, Dresden 18.10.2014

 

2014 - October 14

A new article about a simple spreadsheet model calculating hysteresis loops has just been accepted:

A. Ehrmann, T. Blachowicz
A simple model of hysteresis behavior using spreadsheet analysis
Journal of Physics: Conference Series, accepted 14-10-2014

 

2014 - October 10

The next article has just been published, dealing with the relaxation process in knitted fabrics produced from different yarns and in sample dimensions:

A. Ehrmann, T. Blachowicz, F. Heimlich, A. Brücken, M. O. Weber
Influence of the sample dimension and yarn type on the washing relaxation process of knitted fabrics
Tekstil 63, 163-167 (2014)

 

2014 - October 08

Results of our project dealing with utilization of knitted conductive fabrics as elongation sensors have been published:

A. Ehrmann, F. Heimlich, A. Brücken, M. O. Weber, R. Haug
Suitability of knitted fabrics as elongation sensors subject to structure, stitch dimension and elongation direction
(Abstract / pdf)
Textile Research Journal 84, 2006-2012 (2014)

 

2014 - October 03

A new article about magnetic nano-dots with 3D shape modifications has just been accepted:

T. Blachowicz, A. Ehrmann
Anatomy of Demagnetizing and Exchange Fields in Magnetic Nano-Dots Influenced by 3D Shape Modifications
Journal of Physics: Conference Series, accepted 01-10-2014

 

2014 - September 14

The results of simulations and experiments related to novel memory cells have been published as a book:

A. Ehrmann
Examination and simulation of new magnetic materials for the possible application in memory cells
ISBN 978-3-8325-3772-2, Logos Verlag, Berlin 2014

 

2014 - August 13

In our just published article which is freely available we report about hysteresis loop shapes, simulated for different fourfold anisotropies:

 

2014 - August 09

Our latest article about 3D printing of textile-based structures has just been published and is freely available:

R. Melnikova, A. Ehrmann, K. Finsterbusch
3D printing of textile-based structures by Fused Deposition Modelling (FDM) with different polymer materials
IOP Conf. Ser.: Mater. Sci. Eng. 62, 012018 (2014)

 

2014 - August 02

A new article about utilization of conductive knitted fabrics as elongation sensors has just been accepted:

A. Ehrmann, F. Heimlich, A. Brücken, M. O. Weber, R. Haug
Suitability of knitted fabrics as elongation sensors subject to structure, stitch dimension and elongation direction
Textile Research Journal, accepted 02-08-2014

 

2014 - July 10

A new scientific blog is being developed: VIARAM - Virtual Institute of Applied Research on Advanced Materials.
Please check out from time to time!