Abstract
A biomimetic-villus structure that has been fabricated using a three-dimensional (3D) printer, which is a high-resolution additive-manufacturing process, is here introduced for the realizing of a large increase of the surface area beyond the structural limitations, and the intestinal-villus structure that can be produced only by a 3D printer is imitated. The surface area of the 3D-printed biomimetic-villus structure was increased by approximately 300% compared with the planar structure, and to achieve the full contact of this increased surface area, polytetrafluoroethylene (PTFE) powder was used as the triboelectric material, resulting in fivefold and fourfold increases of the electric power output performance in the vertical-direction mode and the rotational-direction mode, respectively. In addition, a dust-filtration system was designed using the large electrostatic charge that formed between an acrylonitrile butadien styrene (ABS) surface and PTFE powders, and dust particles of various sizes were efficiently adsorbed. Further, because of the use of the polymer-based ABS and the PTFE powers, the dust filter is stable and easily reusable, and it was experimentally confirmed after a washing that the filtration efficiency of 41% is nondecreasing. As a result, a successful validation of the use of the 3D-printed biomimetic-villus structure with the maximized surface area as an ecofriendly dust-adsorption system as well as a triboelectric nanogenerator was achieved.
| Original language | English |
|---|---|
| Article number | 103857 |
| Journal | Nano Energy |
| Volume | 63 |
| DOIs | |
| Publication status | Published - 2019 Sept |
Bibliographical note
Funding Information:H.-J. Yoon, D.-H. Kim and W. Seung contributed equally to this work. This work was financially supported by the Basic Science Research Program ( 2018R1A2A1A19021947 ) through the National Research Foundation (NRF) of Korea Grant funded by the Ministry of Science and ICT , and by a project No SI1802 (Development of One-patch Device for HMI Based on 3D Device Printing) of the Korea Research Institute of Chemical Technology (KRICT) .
Funding Information:
H.-J. Yoon, D.-H. Kim and W. Seung contributed equally to this work. This work was financially supported by the Basic Science Research Program (2018R1A2A1A19021947) through the National Research Foundation (NRF) of Korea Grant funded by the Ministry of Science and ICT, and by a project No SI1802 (Development of One-patch Device for HMI Based on 3D Device Printing) of the Korea Research Institute of Chemical Technology (KRICT).
Publisher Copyright:
© 2019 Elsevier Ltd
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- Electrical and Electronic Engineering
