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Title: Replica molding-based nanopatterning of tribocharge on elastomer with application to electrohydrodynamic nanolithography

Journal Article · · Nature Communications
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [5]
  1. Iowa State Univ., Ames, IA (United States). Dept. of Electrical and Computer Engineering
  2. Iowa State Univ., Ames, IA (United States). Dept. of Electrical and Computer Engineering; Ames Lab. and Iowa State Univ., Ames, IA (United States)
  3. Iowa State Univ., Ames, IA (United States). Dept. of of Civil, Construction and Environmental Engineering
  4. Iowa State Univ., Ames, IA (United States). Dept. of Electrical and Computer Engineering, and Dept. of Physics and Astronomy; Ames Lab. and Iowa State Univ., Ames, IA (United States)
  5. Iowa State Univ., Ames, IA (United States). Dept. of Electrical and Computer Engineering, and Dept. of Physics and Astronomy

Replica molding often induces tribocharge on elastomers. To date, this phenomenon has been studied only on untextured elastomer surfaces even though replica molding is an effective method for their nanotexturing. Here we show that on elastomer surfaces nanotextured through replica molding the induced tribocharge also becomes patterned at nanoscale in close correlation with the nanotexture. Here, by applying Kelvin probe microscopy, electrohydrodynamic lithography, and electrostatic analysis to our model nanostructure, poly(dimethylsiloxane) nanocup arrays replicated from a polycarbonate nanocone array, we reveal that the induced tribocharge is highly localized within the nanocup, especially around its rim. Through finite element analysis, we also find that the rim sustains the strongest friction during the demolding process. From these findings, we identify the demolding-induced friction as the main factor governing the tribocharge’s nanoscale distribution pattern. Finally, by incorporating the resulting annular tribocharge into electrohydrodynamic lithography, we also accomplish facile realization of nanovolcanos with 10 nm-scale craters.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358; CMMI-1265844
OSTI ID:
1425475
Report Number(s):
IS-J-9583; PII: 3319
Journal Information:
Nature Communications, Vol. 9, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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