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Maziz, Ali
Publications (10 of 13) Show all publications
Persson, N.-K., Maziz, A., Öberg, I., Christiansson, I., Stålhand, J. & Jager, E. (2017). Next generation Smart Textiles - morphing and actuating devices. In: : . Paper presented at E-MRS Spring Meeting and Exhibit, Strasbourg, France, May 22-26, 2017.
Open this publication in new window or tab >>Next generation Smart Textiles - morphing and actuating devices
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2017 (English)Conference paper, Oral presentation only (Refereed)
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:liu:diva-137906 (URN)
Conference
E-MRS Spring Meeting and Exhibit, Strasbourg, France, May 22-26, 2017
Available from: 2017-06-01 Created: 2017-06-01 Last updated: 2018-01-03Bibliographically approved
Maziz, A., Guan, N., Sharma, N., Svennersten, K. & Jager, E. (2017). Second generation micromechanical stimulation chips to study mechanotransduction in the urinary tract. In: : . Paper presented at 7th international conference on Electromechanically Active Polymer transducers & artificial muscles, EuroEAP 2017.
Open this publication in new window or tab >>Second generation micromechanical stimulation chips to study mechanotransduction in the urinary tract
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2017 (English)Conference paper, Oral presentation only (Other academic)
National Category
Biomedical Laboratory Science/Technology
Identifiers
urn:nbn:se:liu:diva-151746 (URN)
Conference
7th international conference on Electromechanically Active Polymer transducers & artificial muscles, EuroEAP 2017
Available from: 2018-10-04 Created: 2018-10-04 Last updated: 2018-10-04
Khaldi, A., Maziz, A., Alici, G., Spinks, G. M. & Jager, E. (2016). Bottom-up microfabrication process for individually controlled conjugated polymer actuators. Sensors and actuators. B, Chemical, 230, 818-824
Open this publication in new window or tab >>Bottom-up microfabrication process for individually controlled conjugated polymer actuators
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2016 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 230, p. 818-824Article in journal (Refereed) Published
Abstract [en]

Handling of soft and fragile sub-millimeter sized samples such as cells and tissues requires new tools that allow delicate manipulation. Conducting polymer actuators show unique characteristics suitable to driving such manipulators, however despite their potential, the current fabrication method of the trilayer structures does not allow constructing advanced micromanipulators operating in air using this technology. Here we show a novel bottom-up microfabrication process for conjugated polymer trilayer actuators using various solid polymer electrolytes. In addition, the process design integrates contact pads, which has been an issue for small scale conducting polymer actuators. The microfabrication process starts with a patterned layer of conjugated polymer, followed by depositing a polymer electrolyte and a second patterning of the second conjugated polymer layer. The process resulted in successful fabrication of individually controllable conducting polymer trilayer actuators comprising polyvinylidenefluoride and poly( vinylidenefluoride-co-hexafluoropropylene) membranes and showed good interfacial adhesion between the different layers in the final device. The polyvinylidenefluoride trilayer actuator showed good actuation capability. The developed bottom-up microfabrication method paves the way for the development of novel micromanipulation tools. (C) 2016 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA, 2016
Keywords
Polypyrrole; Actuator; Solid polymer electrolyte; Electroactive polymer; Bottom up microfabrication
National Category
Biological Sciences
Identifiers
urn:nbn:se:liu:diva-128715 (URN)10.1016/j.snb.2016.02.140 (DOI)000374329300104 ()
Note

Funding Agencies|Linkoping University; EU FP7 Marie Curie action IEF [625923]; COST Action ESNAM (European Scientific Network for Artificial Muscles) [MP1003]; Swedish Research Council [VR-2010-6672, VR-2014-3079]; Knut & Alice Wallenberg Stiftelse [LiU-2010-00318, LiU-2012-01361, LiU-2014-01752]; Australian Research Council [CE14010012, DP110101073]; [COST-STSM-MP1003-8971]; [COST-STSM-MP1003-13878]; [COST-STSM-MP1003-16675]

Available from: 2016-06-07 Created: 2016-05-30 Last updated: 2018-10-11
Jager, E., Maziz, A. & Khaldi, A. (2016). Conducting Polymers as EAPs: Microfabrication. In: Federico Carpi (Ed.), Electromechanically Active Polymers: A Concise Reference: (pp. 293-318). Cham: Springer
Open this publication in new window or tab >>Conducting Polymers as EAPs: Microfabrication
2016 (English)In: Electromechanically Active Polymers: A Concise Reference / [ed] Federico Carpi, Cham: Springer, 2016, p. 293-318Chapter in book (Other academic)
Abstract [en]

In this chapter, first some basic principles of photolithography and general microfabrication are introduced. These methods have been adapted to fit the microfabrication of conducting polymer actuators, resulting in a toolbox of techniques to engineer microsystems comprising CP microactuators, which will be explained in more detail. CP layers can be patterned using both subtractive and additive techniques to form CP microactuators in a variety of configurations including bulk expansion, bilayer, and trilayer actuators. Methods to integrate CP microactuators into complex microsystems and interfaces to connect them to the outside world are also described. Finally, some specifications, performance, and a short introduction to various applications are presented.

Place, publisher, year, edition, pages
Cham: Springer, 2016
Series
Polymers and Polymeric Composites: A Reference Series
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:liu:diva-151822 (URN)10.1007/978-3-319-31767-0_13-1 (DOI)9783319317670 (ISBN)
Available from: 2018-10-05 Created: 2018-10-05 Last updated: 2018-10-05Bibliographically approved
Khaldi, A., Falk, D., Maziz, A. & Jager, E. (2016). Fabrication and adhesion of conjugated polymer trilayer structures for soft, flexible micromanipulators. In: Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016: . Paper presented at Electroactive Polymer Actuators and Devices (EAPAD) 2016 (pp. 97980N-1-97980N-8). SPIE - International Society for Optical Engineering, 9797
Open this publication in new window or tab >>Fabrication and adhesion of conjugated polymer trilayer structures for soft, flexible micromanipulators
2016 (English)In: Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016, SPIE - International Society for Optical Engineering, 2016, Vol. 9797, p. 97980N-1-97980N-8Conference paper, Published paper (Refereed)
Abstract [en]

We are developing soft, flexible micromanipulators such as micro- tweezers for the handling and manipulation of biological species including cells and surgical tools for minimal invasive surgery. Our aim is to produce tools with minimal dimensions of 100 μm to 1 mm in size, which is 1-2 orders of magnitude smaller than existing technology. However, the displacement of the current developed micromanipulator remains limited due to the low ionic conductivity of the materials. Here, we present developed methods for the fabrication of conjugated polymer trilayer structure which exhibit potential to high stretchability/flexibility as well as a good adhesion between the three different layers. The outcomes of this study contribute to the realisation of low-foot print devices articulated with electroactive polymer actuators for which the physical interface with the power source has been a significant challenge limiting their application. Here, we present a new flexible trilayer structure, which will allow the fabrication of metal-free soft microactuators.

Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2016
Series
Proceedings of SPIE, ISSN 0277-786X
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:liu:diva-128250 (URN)10.1117/12.2218860 (DOI)000388439700007 ()
Conference
Electroactive Polymer Actuators and Devices (EAPAD) 2016
Funder
EU, FP7, Seventh Framework Programme, 625923
Note

Funding agencies: Linkoping University; COST Action MP1003 ESNAM (European Scientific Network for Artificial Muscles); Swedish Research Council [VR - 2010-6672]; Knut & Alice Wallenberg Stiftelse [LiU-2010-00318, LiU-2012-01361]; EU FP7 Marie Curie action IEF [625923 POLYA

Available from: 2016-05-23 Created: 2016-05-23 Last updated: 2019-11-29
Maziz, A., Guan, N., Svennerstan, K., Hallen-Grufman, K. & Jager, E. (2016). Lab on chip microdevices for cellular mechanotransduction in urothelial cells. In: Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016: . Paper presented at SPIE Electroactive Polymer Actuators and Devices (EAPAD) 2016 (pp. 97981R-1-97981R-9). SPIE - International Society for Optical Engineering, 9798
Open this publication in new window or tab >>Lab on chip microdevices for cellular mechanotransduction in urothelial cells
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2016 (English)In: Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016, SPIE - International Society for Optical Engineering, 2016, Vol. 9798, p. 97981R-1-97981R-9Conference paper, Published paper (Refereed)
Abstract [en]

Cellular mechanotransduction is crucial for physiological function in the lower urinary tract. The bladder is highly dependent on the ability to sense and process mechanical inputs, illustrated by the regulated filling and voiding of the bladder. However, the mechanisms by which the bladder integrates mechanical inputs, such as intravesicular pressure, and controls the smooth muscles, remain unknown. To date no tools exist that satisfactorily mimic in vitro the dynamic micromechanical events initiated e.g. by an emerging inflammatory process or a growing tumour mass in the urinary tract. More specifically, there is a need for tools to study these events on a single cell level or in a small population of cells. We have developed a micromechanical stimulation chip that can apply physiologically relevant mechanical stimuli to single cells to study mechanosensitive cells in the urinary tract. The chips comprise arrays of microactuators based on the electroactive polymer polypyrrole (PPy). PPy offers unique possibilities and is a good candidate to provide such physiological mechanical stimulation, since it is driven at low voltages, is biocompatible, and can be microfabricated. The PPy microactuators can provide mechanical stimulation at different strains and/or strain rates to single cells or clusters of cells, including controls, all integrated on one single chip, without the need to preprepare the cells. This paper reports initial results on the mechano-response of urothelial cells using the micromechanical stimulation chips. We show that urothelial cells are viable on our microdevices and do respond with intracellular Ca2+ increase when subjected to a micro-mechanical stimulation.

Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2016
Series
SPIE proceedings, ISSN 0277-786X
National Category
Medical Engineering
Identifiers
urn:nbn:se:liu:diva-128248 (URN)10.1117/12.2218799 (DOI)000388439700034 ()978-1-5106-0039-3 (ISBN)
Conference
SPIE Electroactive Polymer Actuators and Devices (EAPAD) 2016
Funder
Swedish Research Council, VR-2014-3079
Note

Funding agencies: Swedish Research Council [VR-2014-3079]; Linkoping University; European Science Foundation COST Action ESNAM (European Scientific Network for Artificial Muscles) [MP1003]; Swedish Society of Medicine [SLS-249841]

Available from: 2016-05-23 Created: 2016-05-23 Last updated: 2017-02-24
Zeglio, E., Vagin, M., Musumeci, C., Ajjan, F., Gabrielsson, R., Trinh, X. t., . . . Inganäs, O. (2015). Conjugated Polyelectrolyte Blends for Electrochromic and Electrochemical Transistor Devices. Chemistry of Materials, 27(18), 6385-6393
Open this publication in new window or tab >>Conjugated Polyelectrolyte Blends for Electrochromic and Electrochemical Transistor Devices
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2015 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 27, no 18, p. 6385-6393Article in journal (Refereed) Published
Abstract [en]

Two self-doped conjugated polyelectrolytes, having semiconducting and metallic behaviors, respectively, have been blended from aqueous solutions in order to produce materials with enhanced optical and electrical properties. The intimate blend of two anionic conjugated polyelectrolytes combine the electrical and optical properties of these, and can be tuned by blend stoichiometry. In situ conductance measurements have been done during doping of the blends, while UV vis and EPR spectroelectrochemistry allowed the study of the nature of the involved redox species. We have constructed an accumulation/depletion mode organic electrochemical transistor whose characteristics can be tuned by balancing the stoichiometry of the active material.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC, 2015
National Category
Materials Chemistry Condensed Matter Physics
Identifiers
urn:nbn:se:liu:diva-122212 (URN)10.1021/acs.chemmater.5b02501 (DOI)000361935000028 ()
Note

Funding Agencies|Marie Curie network "Renaissance"; Knut and Alice Wallenberg foundation through Wallenberg Scholar grant; Swedish Research Council [VR-2014-3079, D0556101]; Carl Trygger Foundation [CTS 12:206]

Available from: 2015-10-26 Created: 2015-10-23 Last updated: 2024-01-10
Khaldi, A., Falk, D., Maziz, A. & Jager, E. (2015). Conjugated polymer microactuators fabricated using soft lithography. In: : . Paper presented at EuroEAP 2015. Fifth international conference on Electromechanically Active Polymer (EAP) transducers and artificial muscles. 9-10 June 2015, Tallinn, Estonia.
Open this publication in new window or tab >>Conjugated polymer microactuators fabricated using soft lithography
2015 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:liu:diva-128127 (URN)
Conference
EuroEAP 2015. Fifth international conference on Electromechanically Active Polymer (EAP) transducers and artificial muscles. 9-10 June 2015, Tallinn, Estonia
Funder
EU, FP7, Seventh Framework Programme, 625923 POLYACT
Available from: 2016-05-18 Created: 2016-05-18 Last updated: 2021-06-02
Svennersten, K., Maziz, A., Hallén Grufman, K. & Jager, E. (2015). Micromechanical stimulation chips for studying mechanotransduction in micturition. In: 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS): . Paper presented at 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS).21-25 June 2015. Anchorage, AK (pp. 1672-1675). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Micromechanical stimulation chips for studying mechanotransduction in micturition
2015 (English)In: 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 1672-1675Conference paper, Published paper (Refereed)
Abstract [en]

We have developed a micromechanical stimulation chipthat can apply physiologically relevant mechanical stimulito single cells to study mechanosensitive cells in the urinarytract. The chips comprise arrays of microactuators based onthe electroactive polymer polypyrrole (PPy). PPy offersunique possibilities and is a good candidate to provide suchphysiological mechanical stimulation, since it is driven atlow voltages, is biocompatible, and can be microfabricated.The PPy microactuators can provide mechanical stimulationat different strains and/or strain rates to single cells orclusters of cells, including controls, all integrated on onesingle chip, without the need to pre-prepare the cells. Thechips allow for in situ stimulation during live imagingstudies. The use of these devices will increase experimentalquality and reduce the number of biological samples. Theseunique tools fill an important gap in presently availabletools, since the chips provide array-based stimulationpatterns and are easily integrated in existing cell biologyequipment. These chips will generate a leap forward in ourunderstanding of the mechanisms involved inmechanotransduction in cells that may lead to breakthroughs,for instance in therapies for urinary incontinence.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015
Series
2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), ISSN 2159-547X
National Category
Textile, Rubber and Polymeric Materials Urology and Nephrology
Identifiers
urn:nbn:se:liu:diva-128125 (URN)10.1109/TRANSDUCERS.2015.7181264 (DOI)000380461400417 ()
External cooperation:
Conference
2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS).21-25 June 2015. Anchorage, AK
Funder
Swedish Research Council, VR-2014-3079
Available from: 2016-05-18 Created: 2016-05-18 Last updated: 2016-08-26
Maziz, A., Khaldi, A., Persson, N.-K. & Jager, E. (2015). New textile-based electroactive polymer actuators. In: : . Paper presented at EuroEAP 2015. Fifth international conference on Electromechanically Active Polymer (EAP) transducers and artificial muscles. 9-10 June 2015, Tallinn, Estonia.
Open this publication in new window or tab >>New textile-based electroactive polymer actuators
2015 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:liu:diva-128126 (URN)
Conference
EuroEAP 2015. Fifth international conference on Electromechanically Active Polymer (EAP) transducers and artificial muscles. 9-10 June 2015, Tallinn, Estonia
Funder
Swedish Research Council, VR-2014-3079Carl Tryggers foundation , CTS13:191
Available from: 2016-05-18 Created: 2016-05-18 Last updated: 2016-06-03
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