Knot Architecture for Biocompatible and Semiconducting 2D Electronic Fiber Transistors.

Autor: Carey T; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Maughan J; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Doolan L; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Caffrey E; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Garcia J; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Liu S; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Kaur H; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Ilhan C; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland., Seyedin S; School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK., Coleman JN; School of Physics, CRANN & AMBER Research Centers, Trinity College Dublin, Dublin, Dublin 2, Ireland.
Jazyk: angličtina
Zdroj: Small methods [Small Methods] 2024 Oct; Vol. 8 (10), pp. e2301654. Date of Electronic Publication: 2024 Apr 11.
DOI: 10.1002/smtd.202301654
Abstrakt: Wearable devices have generally been rigid due to their reliance on silicon-based technologies, while future wearables will utilize flexible components for example transistors within microprocessors to manage data. Two-dimensional (2D) semiconducting flakes have yet to be investigated in fiber transistors but can offer a route toward high-mobility, biocompatible, and flexible fiber-based devices. Here, the electrochemical exfoliation of semiconducting 2D flakes of tungsten diselenide (WSe 2 ) and molybdenum disulfide (MoS 2 ) is shown to achieve homogeneous coatings onto the surface of polyester fibers. The high aspect ratio (>100) of the flake yields aligned and conformal flake-to-flake junctions on polyester fibers enabling transistors with mobilities μ ≈1 cm 2 V -1 s -1 and a current on/off ratio, I on /I off ≈10 2 -10 4 . Furthermore, the cytotoxic effects of the MoS 2 and WSe 2 flakes with human keratinocyte cells are investigated and found to be biocompatible. As an additional step, a unique transistor 'knot' architecture is created by leveraging the fiber diameter to establish the length of the transistor channel, facilitating a route to scale down transistor channel dimensions (≈100 µm) and utilize it to make a MoS 2 fiber transistor with a human hair that achieves mobilities as high as μ ≈15 cm 2 V -1 s -1 .
(© 2024 The Authors. Small Methods published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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