Journal
SCIENCE ADVANCES
Volume 7, Issue 52, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abk2852
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Funding
- National Natural Science Foundation of China [51873222, 52111530128, 52103325]
- National Key Research and Development Program of China [2019YFC1606600, 2019YFC1606603]
- Engineering and Physical Sciences Research Council (EPSRC) [EP/N007921/1]
- Hangzhou Normal University [4095C5021920452]
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The wetting empowered interfacial self-assembly technique allows for rapid and efficient fabrication of thin films with universal applicability on various materials, achieving large-area coverage of monolayers. This method has significant implications in advancing thin film technology and can be applied in a user-friendly and cost-effective manner for various applications.
Thin film fabrication is of great importance in modern engineering. Here, we propose a universal and conformal thin film technique enabled by the wetting empowered interfacial self-assembly. By tailoring the contact angle of nanoparticle (NP), a NP monolayer can be assembled instantly (within 5 seconds) with an excellent harvesting efficiency (up to 97.5 weight %). This self-assembly strategy presents a universal applicability on various materials, e.g., nonmetal, metal, and core-shell structures, and can achieve a monolayer with same in-plane area as a 95 cm(2) wafer in a single process, indicating great potential for scale-up manufacturing. Through a template transfer, we coat the surface of different substrates (plastic, paper, etc.) with the assembled film in a conformal and nondestructive lift-on manner and subsequently demonstrate fluorescent micropatterns. This self-assembly strategy has great implications in advancing thin film technology in a user-friendly and cost-effective fashion for applications in anti-counterfeiting, actuators, and wearable/flexible electronics.
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