Fundacio Institut Catala De Nanociencia I Nanotecnologia (icn2)

Consejo Superior De Investigaciones Cientificas

The University of Manchester

Institucio Catalana De Recerca I Estudis Avancats

UniversitÄt Autonoma De Barcelona

Institució Catalana De Recerca I Estudis Avanats

Consorcio Centro De Investigacion Biomedica En Red, M.p.

Fundacio Institut Catala De Nanociencia I Nanotecnologia

Icrea

Inbrain Neuroelectronics S.l.

Instituto De Investigaciones Biomédicas August Pi Sunyer (idibaps)

Institut Catalá De Nanociéncia I Nanotecnologia (icn2)

José Antonio Garrido Ariza

Rosa Villa Sanz

Kostantinos Kostarelos

Christopher John Bullock

Jose Agustín Cisneros Fernández

Lluis Antoni Terés Terés

Anton Guimerà Brunet

Francisco Serra Graells

Michele Dei

Cyrill Bussy

Steven Tremayne Walston

Damià Viana

Bert Bakker

María Victoria Sanchez Vives

Lucía Re Blanco

Nathan Schaefer

Eduard Masvidal Codina

Ramón GARCÍA Cortadella

Michel Decré

Antón GuimerÁ Brunet

Xavier Illa Vila

It relates to an reduced graphene oxide (rGO) film having a total thickness from 20 nm to 5 micrometer, which comprises a stack of rGO layers comprising flakes, wherein the distance between two consecutive layers is from 0.2 to 0.7 nm, and to an electrically back-contacted conductive reduced graphene oxide (rGO) structure comprising it together with an additional conductive support on which the rGO is deposited. It also relates to a process for the preparation of the rGO film and the electrically back-contacted conductive rGO structure, and to electronic devices for detecting, receiving and/or inducing electrical signals.

Reduced graphene oxide film comprising a stack of rGO layers and its applications

An apparatus and a method using no switching elements for multiplexing and reading arrays of sensors whose electrical resistance is modulated by the signals to be measured are proposed. Sensor elements are arranged in groups and columns where each column is fed with a continuous voltage waveform of different amplitude, frequency and phase characteristics which then produce current signals that are modulated by the variable resistance signals to be measured. Modulated currents are summed row-wise and collected at the read-out circuits, either by applying a constant voltage to each row of the array or by connecting a capacitor and converting these current summations into output voltage signals. The read-out circuits de-multiplex each individual sensor signal to be measured by lock-in demodulation according to the frequencies and phases employed for the stimulation of each column.

Circuit for the multiplexing and read-out of variable-resistance sensor arrays

Growing community of inventors

Sant Just Desvern, Spain

José Antonio Garrido Ariza