D. Kos, H. P. A. G. Astier, G. D. Martino, J. Mertens, H. Ohadi, D. De. Fazio, D. Yoon, Z. Zhao, A. Kuhn, A. C. Ferrari, C. J. B. Ford, J. J. Baumberg

Small, 2018, in press, doi.org/10.1002/smll.201801599

Nanoactuators are a key component for developing nanomachinery. Here, an electrically driven device yielding actuation stresses exceeding 1 MPa with integrated optical readout is demonstrated. Electrolyte films of 10-nm-thick Al2O3 are sandwiched between graphene and Au electrodes that allow reversible room-temperature solid-state redox producing Al metal and O2 gas in a memristive-type switching device. The resulting high-pressure oxygen microfuel reservoirs are encapsulated under the graphene, swelling to heights of up to 1 μm, which can be dynamically tracked  by plasmonic rulers. Unlike in standard memristors where the memristive redox reaction occurs in single or few conductive filaments, the mechanical deformation forces the constant creation of new filaments over the whole area of the inflated film. The resulting on–off resistance ratios are exceptionally high, reaching 108 in some cycles. The synchronization of nanoactuation and memristive switching in these devices is compatible with large-scale fabrication and has potential for precise and electrically monitored actuation technology.

2019 10

A snapshot of the electrochemical reaction layer by using 3 dimensionally resolved fluorescence mapping
Friday, 14 September 2018
A. de Poulpiquet, B. Goudeau, P. Garrigue, N. Sojic, S. Arbault, T. Doneux, L. Bouffier. Chem. Sci. 2018, 9, 6622-6628. The coupling between electrochemistry and fluorescence confocal laser scanning...
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Eosin-Mediated Alkylsulfonyl Cyanation of Olefins
Friday, 14 September 2018
V. Pirenne, G. Kurtay, S. Voci, L. Bouffier, N. Sojic, F. Robert, D. M. Bassani, Y. Landais. Org. Lett. 2018, 20 (15), 4521-4525. Eosin-Y (EY)-mediated alkylsulfonyl cyanation of olefins was shown...
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C‐Functionalized Cationic Diazaoxatriangulenes: Late‐Stage Synthesis and Tuning of Physicochemical Properties
Friday, 14 September 2018
I. Hernández Delgado, S. Pascal, C. Besnard, S. Voci, L. Bouffier, N. Sojic, J. Lacour. Chem. Eur. J. 2018, 24 (40), 10186-10195. A series of nine C‐functionalized cationic diazaoxa triangulene...
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Uphill production of dihydrogen by enzymatic oxidation of glucose without an external energy source
Monday, 13 August 2018
E. Suraniti, P. Merzeau, J. Roche, S. Gounel, A. G. Mark, P. Fischer, N. Mano, A. Kuhn Nature Comm. 2018, 9:3229 Chemical systems do not allow the coupling of energy from several simple reactions to...
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Electrically Controlled Nano and Micro Actuation in Memristive Switching Device with On-Chip Gas Encapsulation
Monday, 09 July 2018
D. Kos, H. P. A. G. Astier, G. D. Martino, J. Mertens, H. Ohadi, D. De. Fazio, D. Yoon, Z. Zhao, A. Kuhn, A. C. Ferrari, C. J. B. Ford, J. J. Baumberg Small, 2018, in press,...
TRPV1 activation induced by modulated or unmodulated 1800 MHz radiofrequency field exposure
Monday, 18 June 2018
Ruigrok, H.J., Arnaud-Cormos D., Hurtier A., Poque-Haro E., Poulletier de Gannes F., Ruffié G., Bonnaudin F, Lagroye I., Sojic N., Arbault S., Lévêque P., Veyret B. and Percherancier Y. Radiation...
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Correlations between gaseous and liquid phase chemistries induced by cold atmospheric plasmas in a physiological buffer
Monday, 18 June 2018
Girard F., Peret M., Dumont N., Badets V., Blanc S., Gazeli K., Noël C., Belmonte T., Marlin L., Cambus J.P., Simon G., Sojic N., Held B., Clément F. and Arbault S. Phys. Chem. Chem. Phys., 2018,...
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Electroformation of Phospholipid Giant Unilamellar Vesicles in a Physiological Buffer
Monday, 18 June 2018
Lefrançois P., Goudeau B., Arbault S. Integrative Biology, 2018, in press Phospholipid Giant Unilamellar Vesicles (GUVs) are usually prepared by electroformation in water, that is in a...
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Des biopiles enzymatiques pour alimenter des circuits électroniques implantables
Tuesday, 10 April 2018
E. Suraniti, A.G. Mark, J. Roche, H. Richter, A. Kuhn, P. Fischer, N. Mano L’Actualité Chimique 2018, 427-428,127-128 Une micro-source d’énergie intégrée permettrait à des implants...
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Current hot-spots and some more exotic topics
Tuesday, 10 April 2018
L. Bouffier, N. Sojic, A. Kuhn. Current Opinion in Electrochemistry 2018, 7:A1–A4 This section of Current Opinion in Electrochemistry includes 17 articles contributed by groups from all over the...
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Une façon inhabituelle de briser la symétrie moléculaire: les métaux mesoporeux chiraux
Thursday, 22 February 2018
A. Kuhn L’Actualité Chimique 2018, 426,19-24 L’analyse et la synthèse des composés chiraux est d’une importance cruciale dans de nombreux domaines de la société et de la science, y...
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Gateway state-mediated, long-range tunnelling in molecular wires
Thursday, 01 February 2018
S. Sangtarash,  A. Vezzoli,  H. Sadeghi, N. Ferri,  H. M. O'Brien,  I. Grace,  L. Bouffier, S. J. Higgins, R. J. Nichols, C. J. Lambert. Nanoscale 2018, 10,...
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Tuning Electrochemiluminescence in Multi-Stimuli Responsive Hydrogel Films
Monday, 08 January 2018
Haidong Li, Silvia Voci, Valérie Ravaine and Neso Sojic J. Phys. Chem. Lett., 2018, 9, 340–345 Luminescent and redox properties of stimuli-responsive hydrogel materials have been modulated by...
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Bipolar Conducting Polymer Crawlers Based on Triple Symmetry Breaking
Friday, 15 December 2017
B. Gupta, B. Goudeau, P. Garrigue, A. Kuhn Adv. Funct. Mater. 2018, 1705825 see also video clip in Zeste de Science Bipolar electrochemistry can be used in different ways to induce motion of an...
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