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Mutually Exclusive p‐Type and n‐Type Hybrid Electrode of MoS 2 and Graphene for Artificial Soft Touch Fingers
Author(s) -
Manzoor Muhammad Taha,
Nguyen Van Hiep,
Umrao Sima,
Kim JaeHwan,
Tabassian Rassoul,
Kim JiEun,
Oh IlKwon
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201905454
Subject(s) - materials science , graphene , electrode , capacitance , soft robotics , pmos logic , nanotechnology , actuator , voltage , artificial muscle , optoelectronics , oxide , electrical engineering , computer science , transistor , artificial intelligence , physics , engineering , quantum mechanics , metallurgy
Abstract Future smart mobile electronics and wearable robotics that can perform delicate activities controlled by artificial intelligence can require rapid motion actuators working at low voltages with acceptable safety and improved energy efficiency. Accordingly, ionic soft actuators can have great potential over other counterparts because they exhibit gentle movements at low voltages, less than 2 V. However, these actuators currently show deficient performances at sub‐1 V voltages in the high‐frequency range because of the lack of electrode materials with the vital antagonistic properties of high capacitance and good conductivity. Herein, a mutually exclusive nanohybrid electrode (pMoS 2 ‐nSNrGO) is reported consisting of oxide‐doped p‐type molybdenum‐disulfide and sulfur‐nitrogen‐codoped n‐type reduced‐graphene‐oxide. The pMoS 2 ‐nSNrGO electrode derives high capacitance from MoS 2 and good charge transfer between the two components from p‐n nano‐junctions, resulting in excellent actuation performances (670% improvement compared with rGO electrode at 0.5 V and 1 Hz, together with fast responses up to 15 Hz). With such excellent performances, these actuators can be successfully applied to realize an artificial soft robotic finger system for delicately touching the fragile surfaces of smartphones and tablets. The mutually exclusive pMoS 2 ‐nSNrGO electrode can open a new way to develop high‐performance soft actuators for soft robotic applications in the future.