TRANSIENT RESPONSE AND NEUROMORPHIC BEHAVIOR OF LIQUID-GATED TRANSISTORS BASED ON REDUCED OXIDE GRAPHENE

Guilherme Segolin Selmi; Gabrielle Coelho Lelis; Rafael Furlan de Oliveira

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Submission

Paper Title

TRANSIENT RESPONSE AND NEUROMORPHIC BEHAVIOR OF LIQUID-GATED TRANSISTORS BASED ON REDUCED OXIDE GRAPHENE

Authors

Guilherme Segolin Selmi
Gabrielle Coelho Lelis
Rafael Furlan de Oliveira

Modality

Pôster

Subject area

Dispositivos eletrônicos e ópticos (OLED/OFET/OPVs/etc.)

Publishing Date

12/12/2023

Country of Publishing

Brasil

Language of Publishing

Inglês

Paper Page

https://www.even3.com.br/anais/workshop-do-ineo-2023/611664-transient-response-and-neuromorphic-behavior-of-liquid-gated-transistors-based-on-reduced-oxide-graphene

ISBN

978-65-272-0088-8

Keywords

reduced oxide graphene, electrolyte gated transistor, neuromorphic device

Summary

The human brain is a machine created by nature able to do approximately 10^15 operations in parallel, using for this around 20 fJ per operation[1]. Devices that can simulate the electrical stimuli produced inside the brain are classified as neuromorphic. One important class of neuromorphic devices, called synaptic, must be able to simulate the behavior of the biological synapses, that are responsible for the modulation of the electrical stimulus that are passed from one neuron to another. The artificial synapses, besides their use in artificial neural networks, may work to discriminate the concentration of molecules, such as dopamine[2], and as motion controller of living beings, like the open of the nodules of the Dionaea muscipula[3]. In the present work electrolyte gated transistors (EGTs) of reduced oxide graphene (rGO) were fabricated using the polyelectrolyte polydiallyldimethylammonium chloride (PDDA) as an adhesive layer for rGO and their electrical response were characterized. More specifically, we measured the transfer curve to confirm the proper function of the device as an ambipolar transistor and we applied square pulses of voltage, known as pre-synaptic, to the gate of the transistor, keeping the channel voltage constant. The short response of the current (less than a minute) was evaluated for different number of pulses (1 – 50 pulses), varying the period (10 ms – 20s) and the time interval between the stimulus (10 ms – 10s). EGTs of rGO showed excitatory postsynaptic current (EPSC) in the range of few seconds. Finally, the change of the current source-drain was analyzed with different electrolytes (KCl and LiCl), showing a possible interaction between the ionic species and the surface of rGO of the transistor. References [1] Wan, Q.; Sharbati, M. T.; Erickson, J. R.; Du, Y.; Xiong, F. Emerging Artificial Synaptic Devices for Neuromorphic Computing. Adv. Mater. Technol. 2019, 4 (4), 1900037. https://doi.org/10.1002/admt.201900037. [2] Giordani, M.; Sensi, M.; Berto, M.; Di Lauro, M.; Bortolotti, C. A.; Gomes, H. L.; Zoli, M.; Zerbetto, F.; Fadiga, L.; Biscarini, F. Neuromorphic Organic Devices That Specifically Discriminate Dopamine from Its Metabolites by Nonspecific Interactions. Adv. Funct. Mater. 2020, 30 (28), 2002141. https://doi.org/10.1002/adfm.202002141. [3] Harikesh, P. C.; Yang, C.-Y.; Tu, D.; Gerasimov, J. Y.; Dar, A. M.; Armada-Moreira, A.; Massetti, M.; Kroon, R.; Bliman, D.; Olsson, R.; Stavrinidou, E.; Berggren, M.; Fabiano, S. Organic Electrochemical Neurons and Synapses with Ion Mediated Spiking. Nat. Commun. 2022, 13 (1), 901. https://doi.org/10.1038/s41467-022-28483-6.

Title of the Event: Workshop do INEO 2023
City of the Event: Nazaré Paulista
Title of the Proceedings of the event: Anais do Workshop INEO 2023
Name of the Publisher: Even3
Means of Dissemination: Meio Digital
DOI: Get DOI

How to cite

SELMI, Guilherme Segolin; LELIS, Gabrielle Coelho; OLIVEIRA, Rafael Furlan de. TRANSIENT RESPONSE AND NEUROMORPHIC BEHAVIOR OF LIQUID-GATED TRANSISTORS BASED ON REDUCED OXIDE GRAPHENE.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/611664-TRANSIENT-RESPONSE-AND-NEUROMORPHIC-BEHAVIOR-OF-LIQUID-GATED-TRANSISTORS-BASED-ON-REDUCED-OXIDE-GRAPHENE. Access in: 27/07/2024