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Open AccessFeature PaperArticle

Investigation of Structural Stability for Monolithic Nano Bridges on Micro Apertures

1
Department of Mechanical Engineering, Incheon National University, Incheon 22012, Korea
2
Department of Mechanical Engineering, Hanbat National University, Daejeon 34158, Korea
3
John A. Paulson School of Engineering and Applied Science, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA 02138, USA
4
Science and Technology Studies, Program in History and Philosophy of Science, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
5
Sensor System Research Center, Korea Institute of Science and Technology, Seongbuk-gu, Seoul 02792, Korea
6
Division of Thermal and Fluids Science, Institute for Computational Science, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Appl. Sci. 2020, 10(8), 2922; https://doi.org/10.3390/app10082922
Received: 4 April 2020 / Revised: 19 April 2020 / Accepted: 20 April 2020 / Published: 23 April 2020
(This article belongs to the Special Issue 3D Nanostructured Materials and Devices)
The instability of polymeric membranes with nano- and micro-sized apertures has been regarded as one of the main reasons behind realizing ultra-thin membranes with apertures. As is well known, when the thickness of the membrane gets thinner or the aperture size gets smaller, the possibility of geometrical deformation or structural damage by collapse or fracture increases. Herein, we suggest the design rules for the stability of polymeric membranes possessing 1D nano-line patterns monolithically constructed on micro-aperture supporting layers. The proposed theoretical model, which has been thoroughly demonstrated and analyzed based on both theoretical and experimental approaches, provides stability criteria for lateral collapse and vertical fracture of ultra-thin membranes with apertures. View Full-Text
Keywords: multiscale structure; structural stability; UV curable polymer; PDMS; two-level apertures multiscale structure; structural stability; UV curable polymer; PDMS; two-level apertures
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MDPI and ACS Style

Lee, J.; Seol, C.; Nam, L.V.; Jang, S.; Kim, J.; Kim, I.; Ryu, Y.-S.; Kim, S.M. Investigation of Structural Stability for Monolithic Nano Bridges on Micro Apertures. Appl. Sci. 2020, 10, 2922.

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