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1. Toward the use of temporary tattoo electrodes for impedancemetric respiration monitoring and other electrophysiological recordings

Author

Taccola, Silvia, Poliziani, Aliria, Santonocito, Daniele, Mondini, Alessio, Denk, Christian, Ide, Alessandro Noriaki, Oberparleiter, Markus, Greco, Francesco, and Mattoli, Virgilio

Subjects
Condensed Matter - Materials Science, Electrical Engineering and Systems Science - Systems and Control
Abstract

Development of dry, ultra-conformable and unperceivable temporary tattoo electrodes (TTEs), based on the ink-jet printing of PEDOT:PSS on top of commercially available temporary tattoo paper, has gained increasing attention as a new and promising technology for electrophysiological recordings on skin. In this work we present a TTEs epidermal sensor for real time monitoring of respiration through transthoracic impedance measurements, exploiting a new design based on the application of soft screen printed Ag ink and magnetic interlink, that guarantees a repositionable, long term stable and robust interconnection of TTEs with external docking devices. The efficiency of the TTE and the proposed interconnection strategy under stretching (up to 10%) and over time (up to 96 hours) has been verified on a dedicated experimental setup and on humans, fulfilling the proposed specific application of transthoracic impedance measurements. The proposed approach makes this technology suitable for large-scale production and suitable not only for the specific use case presented, but also for real time monitoring of different bio-electric signals, as demonstrated through specific proof of concept demonstrators., Comment: 21 pages, 4 figures plus Supplementary Info

Published
2020
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3. Dual‐Material Aerosol Jet Printing of Magneto‐Responsive Polymers with In‐Process Tailorable Composition for Small‐Scale Soft Robotics.

Author

Taccola, Silvia, Bakhshi, Hadi, Sanchez Sifuentes, Midori, Lloyd, Peter, Tinsley, Luke J., Macdonald, James, Bacchetti, Alistair, Cespedes, Oscar, Chandler, James H., Valdastri, Pietro, Meyer, Wolfdietrich, and Harris, Russell A.

Subjects
*SOFT robotics, *MAGNETIC control, *MAGNETIC properties, *MAGNETIC nanoparticles, *MAGNETIC fields
Abstract

The opportunity to create magneto‐responsive soft materials (MSMs) with in‐process tailorable and locally controllable magnetic properties is highly desirable across many technological and biomedical applications. In this paper, this capability is demonstrated for the first time using computer‐controlled dual‐material aerosol jet printing (DMAJP) technology. This approach allows controlled variation of composition between the aerosols of a magnetic nanoparticles (MNPs) ink and a photocurable polymer during the printing process. The mixing ratio of the two aerosols determines the MNPs loading in the nanocomposite, which can be used to locally control the magnetic properties of the printed structures. The printing process is structured in a layer‐by‐layer fashion in combination with a sacrificial layer approach for building fully freestanding MSM structures that combine magnetoactive and non‐magnetoactive elements in a single process multi‐material printing method with no further assembly requirements. Using this method, the direct manufacturing of small‐scale multi‐material soft objects with complex shapes and programmable functions whose movements can be controlled by the application of an external magnetic field is demonstrated. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Biohybrid Wind Energy Generators Based on Living Plants

Author

Meder, Fabian, Thielen, Marc, Naselli, Giovanna Adele, Taccola, Silvia, Speck, Thomas, Mazzolai, Barbara, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Vouloutsi, Vasiliki, editor, Mura, Anna, editor, Tauber, Falk, editor, Speck, Thomas, editor, Prescott, Tony J., editor, and Verschure, Paul F. M. J., editor

Published
2020
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8. List of contributors

Author

Akkerman, H.B., primary, Barsotti, Jonathan, additional, Bhagat, Shubham, additional, Bonfiglio, Annalisa, additional, Brabec, Christoph J., additional, Burgt, Yoeri van de, additional, Cantatore, E., additional, Casula, Giulia, additional, Channa, Iftikhar Ahmed, additional, Chen, Yan-Fang, additional, Cosseddu, Piero, additional, Distler, Andreas, additional, Duhm, Steffen, additional, Egelhaaf, Hans-Joachim, additional, Eryilmaz, Ilknur Hatice, additional, Fattori, M., additional, Ferrari, Laura M., additional, Gelinck, G.H., additional, Genco, E., additional, Gkoupidenis, Paschalis, additional, Graz, Ingrid M., additional, Greco, Francesco, additional, Hase, Hannes, additional, Hou, Linrui, additional, Jang, DongJu, additional, Jung, Sungjune, additional, Jung, Sungyeop, additional, Keene, Scott T., additional, Kemerink, Martijn, additional, Kim, Taek-Soo, additional, Kim, Wansun, additional, Kim, Yong Hwi, additional, Kovács-Vajna, Zsolt M., additional, Kronemeijer, A.J., additional, Kwon, Jimin, additional, Lai, Stefano, additional, Liang, Longwei, additional, Liu, Yang, additional, Ma, Boo Soo, additional, Macchia, Eleonora, additional, Maiellaro, G., additional, Maisch, Philipp, additional, Martines, Laura, additional, Mattana, Giorgio, additional, Mattoli, Virgilio, additional, Natali, Dario, additional, Orgiu, Emanuele, additional, Palmisano, G., additional, Pani, Danilo, additional, Peeters, B., additional, Ragonese, E., additional, Romele, Paolo, additional, Rosset, Samuel, additional, Salzmann, Ingo, additional, Scheunemann, Dorothea, additional, Shanmugan, S., additional, Sommer, Michael, additional, Spanu, Andrea, additional, Steinberger, Marc, additional, Sun, Jinfeng, additional, Taccola, Silvia, additional, Tam, Kai Cheong, additional, Tordera, D., additional, Torricelli, Fabrizio, additional, Torsi, Luisa, additional, Vacca, Paolo, additional, van Breemen, A.J.J.M., additional, van der Steen, J.-L., additional, Yang, Fu, additional, and Yuan, Changzhou, additional

Published
2021
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11. Aerosol Jet Printing of Strain Sensors for Soft Robotics.

Author

Karipoth, Prakash, Chandler, James H., Lee, Jaemin, Taccola, Silvia, Macdonald, James, Valdastri, Pietro, and Harris, Russell A.

Subjects
STRAIN sensors, AEROSOLS, STRUCTURAL health monitoring, SOFT robotics, WEARABLE technology, ROBOTICS, ATOMIZATION
Abstract

The field of soft robotics is rapidly progressing toward applications including; wearable electronics, prosthetics, and biomedical devices. This is leading to demand for flexible, embedded high‐performance strain sensors to deliver real‐time feedback on the static configurations and dynamic motions of these robotic devices, to ultimately enable the levels of autonomous control and structural monitoring required for intelligent manipulation. Herein, aerosol jet printing (AJP) technology is utilized to generate arbitrary piezoresistive strain sensor layouts on fibrous paper suitable for direct integration into elastomeric soft robots. A custom graphene nanoplatelet ink with a viscosity of around 2.70 cP has been formulated for optimized atomization and patterning of conductive traces via AJP. Single and multilayer printing onto different paper substrates are explored; with the nominal resistance of the printed tracks varying from 272 to 4900 kΩ depending on paper type and number of layers. Maximum gauge factors of 24.2 ± 1.8 and 56.5 ± 4.5 are determined for sensor surfaces under tensile and compression modes, respectively. To demonstrate the possibility for direct integration of this approach for soft robotics, strain sensors are directly printed onto the strain‐limiting layer of a pneumatic soft robotic gripper, to provide continuous feedback of the gripper over curvatures up to 80 m−1. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Low-voltage dielectric elastomer actuators with stretchable electrodes fabricated by supersonic cluster beam implantation.

Author

Taccola, Silvia, Bellacicca, Andrea, Milani, Paolo, Beccai, Lucia, and Greco, Francesco

Subjects
*DIELECTRICS, *ACTUATORS, *ELECTRODES, *NANOPARTICLES, *NANOCOMPOSITE materials
Abstract

Supersonic cluster beam implantation of Ag nanoparticles is proposed for the fabrication of stretchable and compliant electrodes for dielectric elastomer actuators (DEAs) with reduced thickness. Thanks to the low-energy and finely tunable implantation process, a nanocomposite Ag/polydimethylsiloxane electrode layer is produced with a moderate stiffening effect for the DEA in contrast with a common deposition strategy for electrodes. Thin DEAs with an overall thickness of 17 μm were fabricated and tested under different preloading conditions, demonstrating a max uniaxial actuation strain of 2.5% at an actuation voltage of 765 V, lower than the typical voltage values of DEAs. The electrodes remained conductive up to 40% strain, and they fully recovered the original resistance after 70% stretching. Our results represent a significant step towards the development of DEAs operating at reduced actuation voltages, by stacking of micrometer-thick elastomer films, paving the way to novel applications in soft robotics. [ABSTRACT FROM AUTHOR]

Published
2018
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19. Ultraconformable, Self-Adhering Surface Electrodes for Measuring Electrical Signals in Plants

Author

Fabian, Meder, Saar, Sirgi, Taccola, Silvia, Filippeschi, Carlo, Mattoli, Virgilio, and Mazzolai, Barbara

Abstract

The electrical signals in plant's physiological processes are of great interest in biology, biohybrid robotics, and sensors for interfacing the living organisms with an electronic readout and control. This paper reports on the application of conformable, self-adhering surface electrodes for the measurement and bidirectional stimulation of electrical signals in plants. The inkjet-printed poly(3,4-ethylenedioxythiophene) polystyrene sulfonate based electrodes are Dionaea muscipula,Arabidopsis thaliana, andCodariocalyx motoriusand for stimulating mechanical responses inD. muscipula. A benefit over traditional electrodes is the van der Waals self-adherence of the thin electrodes, their intrinsic flexibility and adaptation also on small leaves while providing excellent readout. The same electrode allows long-term multicycle measurements over at least 10 days and, moreover, straightforward recordings on fast-moving organs such as snapping fly traps and endogenously oscillating leaflets. The results confirm that self-adhering soft organic electronics are particularly suitable for plant electrical signal analysis when easy-application, self-adaptation, and long-term performance are required in plant science, biohybrid robotics, and biohybrid sensors.

Published
2021

28. Back Cover: Plasma Process. Polym. 12∕2016

Author

Pignatelli, Daniela, primary, Sardella, Eloisa, additional, Palumbo, Fabio, additional, Lo Porto, Chiara, additional, Taccola, Silvia, additional, Greco, Francesco, additional, Mattoli, Virgilio, additional, and Favia, Pietro, additional

Published
2016
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32. Electrochemical actuation of free‑standing PEDOT : PSS/SU8 bilayer microactuators

Author

Taccola, Silvia, Greco, Francesco, Jager, Edwin, Mattoli, Virgilio, Taccola, Silvia, Greco, Francesco, Jager, Edwin, and Mattoli, Virgilio

Abstract

Conjugated polymers are of great interest for micro‑actuators because, compared to large‑scale actuators, miniaturization improves their electrochemical properties by increasing speed, stress output etc. Recently, a novel fabrication process for obtaining robust large area free‑standing ultra-thin films made of the conjugated polymer poly (3, 4-ethylenedioxythiophene) doped with the polyanion poly(styrenesulfonate) (PEDOT:PSS) has been demonstrated. These nanofilms show a thickness ranging between few tenths to several hundredths of nm. This opens up the possibility of using such free‑standing PEDOT:PSS nanofilms to realize new all polymer electrochemical micro‑actuators using facile microfabrication methods. . Here, we report the processing methods and a validation of the micro-actuators’ working principle. Free standing PEDOT:PSS/SU8 bilayer micro‑actuators in the form of micro-fingers have been fabricated and patterned using a combination of standard microfabrication procedures. Reversible actuation of the PEDOT:PSS microactuators caused by electrochemical oxidation/reduction cycles was demonstrated and resulted in bending of the micro-fingers. Small, soft actuators may be useful for a number of applications, including microrobotics, microsurgery, and cell handling

Published
2012

37. Ultra-thin conductive free-standing PEDOT/PSS nanofilms

Author

Greco, Francesco, primary, Zucca, Alessandra, additional, Taccola, Silvia, additional, Menciassi, Arianna, additional, Fujie, Toshinori, additional, Haniuda, Hiroki, additional, Takeoka, Shinji, additional, Dario, Paolo, additional, and Mattoli, Virgilio, additional

Published
2011
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40. Characterization of Free-Standing PEDOT:PSS/Iron Oxide Nanoparticle Composite Thin Films and Application As Conformable Humidity Sensors

Author

Taccola, Silvia, Greco, Francesco, Zucca, Alessandra, Innocenti, Claudia, de Julián Fernández, César, Campo, Giulio, Sangregorio, Claudio, Mazzolai, Barbara, and Mattoli, Virgilio

Abstract

In this study, a new simple, fast, and inexpensive technique for the preparation of free-standing nanocomposite ultrathin films based on the conductive polymer poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) and embedding iron oxide nanoparticles (NPs) is presented. These nanofilms were fabricated by a single step of spin-coated assisted deposition in conjunction with a release technique (“supporting layer technique”) to detach them from the substrate. Free-standing nanofilms can be easily transferred onto several substrates due to their high conformability, preserving their functionalities. The effect of the addition of iron oxide nanoparticles on the structural and functional properties of the PEDOT:PSS nanofilms is investigated through topography, thickness, magnetic, magneto-optical activity, and conductivity characterizations. PEDOT:PSS and PEDOT:PSS/iron oxide NP nanofilms were tested as resistive humidity sensors. Their sensitivity to humidity was found to increase with increasing nanoparticle concentration. On the basis of these results, it is expected that these composites may furnish inexpensive and reliable means for relative humidity detection.

Published
2013
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