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Title: MXene incorporated polymeric hybrids for stiffness modulation in printed adaptive surfaces
Authors: Ankit
Krisnadi, Febby
Pethe, Shreyas
Lim, Ryan Kwang Jen
Kulkarni, Mohit Rameshchandra
Accoto, Dino
Mathews, Nripan
Keywords: Engineering::Materials
Issue Date: 2021
Source: Ankit, Krisnadi, F., Pethe, S., Lim, R. K. J., Kulkarni, M. R., Accoto, D. & Mathews, N. (2021). MXene incorporated polymeric hybrids for stiffness modulation in printed adaptive surfaces. Nano Energy, 90(Part A), 106548-.
Project: MOE2018-T1- 002-179 
Journal: Nano Energy 
Abstract: Polymeric materials systems developed for actuators and human-machine interfaces suffer from limitations associated with effective force output due to their low mechanical modulus. New material solutions which can provide intrinsic multi-modal responses are needed to reversibly modulate rigidity; to be flexible, stretchable and bendable one moment, and to be rigid, able to bear load and resist deformation at another moment. Thermally modulated phase transition materials are promising for modulation of mechanical properties; however, they have not been explored for electrically driven shape morphing and responsive surfaces which require favourable electrical properties too. Polymers like polyethylene glycol (PEG) allow for low melting point (56 ℃) and high dielectric constant (10), however they are limited by slow crystallization kinetics and large temperature window. We architect an MXene incorporated PEG-water hybrid which allows for both reduction in melting point and rapid heterogeneous nucleation, which in turn increases the crystallization point. Multimodal response is demonstrated via thermal and electrical input, resulting in modulation of 700 times in Young's modulus, 100 times in flexural modulus and 10 times in hardness as well as large actuation strains (~28%) at low electric fields (~0.7 V/µm). They can be printed to create hardness domains, allowing for local and programmable modulation. An all-printed haptic device with an array of 3 × 3 pixels has been demonstrated, capable of independently varying the hardness values for each pixel.
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2021.106548
Rights: © 2021 Elsevier Ltd. All rights reserved. This paper was published in Nano Energy and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20240107
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles
MAE Journal Articles
MSE Journal Articles

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Main Manuscript.pdf
  Until 2024-01-07
Manuscript_accepted version1.44 MBAdobe PDFUnder embargo until Jan 07, 2024
Supporting Information.pdf
  Until 2024-01-07
SI_Accepted version3.5 MBAdobe PDFUnder embargo until Jan 07, 2024

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