Projects per year
Abstract
Recent advances in inkjet printing of two-dimensional (2D) crystals show great promise for next-generation printed electronics development. Printing nonuniformity, however, results in poor reproducibility in device performance and remains a major impediment to their large-scale manufacturing. At the heart of this challenge lies the coffee-ring effect (CRE), ring-shaped nonuniform deposits formed during postdeposition drying. We present an experimental study of the drying mechanism of a binary solvent ink formulation. We show that Marangoni-enhanced spreading in this formulation inhibits contact line pinning and deforms the droplet shape to naturally suppress the capillary flows that give rise to the CRE. This general formulation supports uniform deposition of 2D crystals and their derivatives, enabling scalable and even wafer-scale device fabrication, moving them closer to industrial-level additive manufacturing.
Original language | English |
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Article number | eaba5029 |
Pages (from-to) | eaba5029 |
Number of pages | 6 |
Journal | Science Advances |
Volume | 6 |
Issue number | 33 |
DOIs | |
Publication status | Published - 1 Aug 2020 |
MoE publication type | A1 Journal article-refereed |
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Projects
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ATOP: Atomically-engineered nonlinear photonics with two-dimensional layered material superlattices
Sun, Z., Wang, Y., Pelgrin, V., Dai, Y. & Wang, Y.
01/09/2019 → 31/08/2024
Project: EU: ERC grants
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S2QUIP: Scalable Two-Dimensional Quantum Integrated Photonics
Sun, Z., Turunen, M., Du, M., Hu, X., Bai, X., Uddin, M., Wang, Y., Mohsen, A. & Yoon, H. H.
01/10/2018 → 31/03/2022
Project: EU: Framework programmes funding
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A-Photonics
Rajamanickam, R., Sun, Z., Hedberg, D., Lau Kuen Yao, L., Kim, M., Dai, Y. & Du, M.
01/01/2019 → 31/12/2020
Project: Business Finland: New business from research ideas (TUTLI)