Fabrication and analysis of enforced dry adhesives with core-shell micropillars

Won Gyu Bae; Moon Kyu Kwak; Hoon Eui Jeong; Changhyun Pang; Hakgeun Jeong; Kahp Yang Suh

doi:10.1039/c2sm27323c

Fabrication and analysis of enforced dry adhesives with core-shell micropillars

Won Gyu Bae, Moon Kyu Kwak, Hoon Eui Jeong, Changhyun Pang, Hakgeun Jeong, Kahp Yang Suh

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

We present a simple method for fabricating robust dry adhesives by coating a soft polydimethyl siloxane (PDMS) thin layer on rigid backbone micropillars of polyurethane acrylate (PUA). These core-shell type micropillars demonstrated enhanced durability both in normal and shear adhesion over more than 100 cycles of attachment and detachment. Relatively strong normal (∼11.4 N cm ^-2) and shear (∼15.3 N cm^-2) adhesion forces were observed, which were similar to or even larger than those of homogeneous PDMS micropillars. A simple theoretical model based on beam deflection theory was used to explain the experimental results.

Original language	English
Pages (from-to)	1422-1427
Number of pages	6
Journal	Soft Matter
Volume	9
Issue number	5
DOIs	https://doi.org/10.1039/c2sm27323c
State	Published - 7 Feb 2013

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abstract = "We present a simple method for fabricating robust dry adhesives by coating a soft polydimethyl siloxane (PDMS) thin layer on rigid backbone micropillars of polyurethane acrylate (PUA). These core-shell type micropillars demonstrated enhanced durability both in normal and shear adhesion over more than 100 cycles of attachment and detachment. Relatively strong normal (∼11.4 N cm -2) and shear (∼15.3 N cm-2) adhesion forces were observed, which were similar to or even larger than those of homogeneous PDMS micropillars. A simple theoretical model based on beam deflection theory was used to explain the experimental results.",

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AU - Bae, Won Gyu

AU - Kwak, Moon Kyu

AU - Jeong, Hoon Eui

AU - Pang, Changhyun

AU - Jeong, Hakgeun

AU - Suh, Kahp Yang

PY - 2013/2/7

Y1 - 2013/2/7

N2 - We present a simple method for fabricating robust dry adhesives by coating a soft polydimethyl siloxane (PDMS) thin layer on rigid backbone micropillars of polyurethane acrylate (PUA). These core-shell type micropillars demonstrated enhanced durability both in normal and shear adhesion over more than 100 cycles of attachment and detachment. Relatively strong normal (∼11.4 N cm -2) and shear (∼15.3 N cm-2) adhesion forces were observed, which were similar to or even larger than those of homogeneous PDMS micropillars. A simple theoretical model based on beam deflection theory was used to explain the experimental results.

AB - We present a simple method for fabricating robust dry adhesives by coating a soft polydimethyl siloxane (PDMS) thin layer on rigid backbone micropillars of polyurethane acrylate (PUA). These core-shell type micropillars demonstrated enhanced durability both in normal and shear adhesion over more than 100 cycles of attachment and detachment. Relatively strong normal (∼11.4 N cm -2) and shear (∼15.3 N cm-2) adhesion forces were observed, which were similar to or even larger than those of homogeneous PDMS micropillars. A simple theoretical model based on beam deflection theory was used to explain the experimental results.

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VL - 9

SP - 1422

EP - 1427

JO - Soft Matter

JF - Soft Matter

IS - 5

ER -

Fabrication and analysis of enforced dry adhesives with core-shell micropillars

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