PMID- 34960911
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211230
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 13
IP  - 24
DP  - 2021 Dec 13
TI  - Design Rule for Constructing Buckling-Free Polymeric Stencil with Microdot 
      Apertures.
LID - 10.3390/polym13244361 [doi]
LID - 4361
AB  - A polymeric stencil with microdot apertures made by using polydimethylsiloxane 
      (PDMS) molds with pillar patterns has many advantages, including conformal 
      contact, easy processability, flexibility, and low cost compared to conventional 
      silicon-based membranes. However, due to the inherent deformability of PDMS 
      materials in response to external pressure, it is challenging to construct 
      structurally stable stencils with high structural fidelity. Here, we propose a 
      design rule on the buckling pressure for constructing polymeric stencils without 
      process failure. To investigate the critical buckling pressure (P(cr)), stencils 
      are fabricated by using different PDMS molds with aspect ratio variations (AR: 
      1.6, 2.0, 4.0, and 5.3). By observing the buckled morphology of apertures, the 
      structures can be classified into two groups: low (AR 1.6 and 2.0) and high (AR 
      4.0 and 5.3) AR groups, and P(cr) decreases as AR increases in each group. To 
      investigate the results theoretically, the analysis based on Euler's buckling 
      theory and slenderness ratio is conducted, indicating that the theory is only 
      valid for the high-AR group herein. Besides, considering the correction factor, 
      P(cr) agrees well with the experimental results.
FAU - Kim, Minju
AU  - Kim M
AD  - Department of Mechanical Engineering, Incheon National University, Incheon 22012, 
      Korea.
FAU - Lee, Jinwon
AU  - Lee J
AD  - Department of Mechanical Engineering, Incheon National University, Incheon 22012, 
      Korea.
FAU - Kim, Junsoo
AU  - Kim J
AUID- ORCID: 0000-0001-7340-2770
AD  - John A. Paulson School of Engineering and Applied Science, Harvard University, 
      Cambridge, MA 02138, USA.
FAU - Jang, Segeun
AU  - Jang S
AD  - School of Mechanical Engineering, Kookmin University, Seoul 02707, Korea.
FAU - Kim, Sang Moon
AU  - Kim SM
AUID- ORCID: 0000-0002-2311-2211
AD  - Department of Mechanical Engineering, Incheon National University, Incheon 22012, 
      Korea.
LA  - eng
GR  - 2019R1C1C1006392/National Research Foundation of Korea/
GR  - 2020-0364/Incheon National University/
PT  - Journal Article
DEP - 20211213
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC8709208
OTO - NOTNLM
OT  - UV curable polymer
OT  - aperture
OT  - buckling
OT  - membranes
OT  - structural stability
COIS- The authors declare no conflict of interest.
EDAT- 2021/12/29 06:00
MHDA- 2021/12/29 06:01
PMCR- 2021/12/13
CRDT- 2021/12/28 01:08
PHST- 2021/11/05 00:00 [received]
PHST- 2021/12/09 00:00 [revised]
PHST- 2021/12/10 00:00 [accepted]
PHST- 2021/12/28 01:08 [entrez]
PHST- 2021/12/29 06:00 [pubmed]
PHST- 2021/12/29 06:01 [medline]
PHST- 2021/12/13 00:00 [pmc-release]
AID - polym13244361 [pii]
AID - polymers-13-04361 [pii]
AID - 10.3390/polym13244361 [doi]
PST - epublish
SO  - Polymers (Basel). 2021 Dec 13;13(24):4361. doi: 10.3390/polym13244361.