Multiple Transfer of Layer-by-Layer Nanofunctional Films by Adhesion Controls
| Autor: | Bongjun Yeom, Hyung-Kyu Lim, Nari Ha, Jeong Gon Son, Nayeon Kim, Jinwoo Oh, Arum Jung |
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| Rok vydání: | 2019 |
| Předmět: |
Fabrication
Materials science Layer by layer Nanotechnology 02 engineering and technology Adhesion 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Nanomaterials chemistry.chemical_compound Nanolithography chemistry Polyethylene terephthalate General Materials Science Wafer Thin film 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 11:48476-48486 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Transfer methods to displace active functional layers onto desired surfaces have been developed for the fabrication of nanostructured thin film devices. However, multiple transfers with highly polar surfaces were not yet fully demonstrated presumably due to difficulty in the control of the competitive adhesions at interfaces. In this study, we present adhesion-assisted multiple transfer methods for the fabrication of highly ordered nanolaminated structures with layer-by-layer (LbL) assembled films composed of various functional nanomaterials. The interfacial adhesions were controlled with adhesive layers having a thickness of only 2.5 nm for the successful transfer of the LbL nanofunctional films from the donor substrates to the receiver substrates, which was determined mainly by the major functional moieties at the contact surfaces. The root-mean-square roughness should be lower than 200 nm for conformal contact in the transfer. The versatility of the proposed method was demonstrated with various functional Au, silica, ZnO, and TiO2 nanoparticles as constituent materials and various types of substrates including Si wafer, glass, and polyethylene terephthalate surfaces. The fabricated films with periodic depositions of two different materials could exhibit photoreflective properties with high-order reflection peaks, which were simply tunable by adjusting the order in the multiple transfer. This transfer method could effectively reduce the cost and time in the nanofabrication as it did not require costly equipment, harsh synthesis conditions, and hazardous solvents. |
| Databáze: | OpenAIRE |
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