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Title: Tensile properties of polymer nanowires fabricated via two-photon lithography

Abstract

Two-photon lithography enables fabrication of complex 3D structures with nanoscale features. However, its utility is limited by the lack of knowledge about the process–property relationship. Here, we have designed micro-electro-mechanical systems (MEMS)-based miniaturized tensile testers to measure the stress–strain response of the individual polymer nanowires. Measurements demonstrate that geometrically indistinguishable nanowires can exhibit widely varying material behavior ranging from brittle to soft plastic based on processing conditions. In addition, a distinct size-scaling effect was observed for post-processed nanowires wherein thinner nanowires have up to 2 times higher properties. The process–property characterization presented here will be critical for predictive design of functional 3D structures with nanoscale features.

Authors:
 [1];  [2]; ORCiD logo [3]
  1. Center for Engineered Materials & Manufacturing, Lawrence Livermore National Laboratory, Livermore, USA, Department of Mechanical Engineering
  2. Department of Mechanical Engineering, The University of Texas at Austin, Austin, USA
  3. Center for Engineered Materials & Manufacturing, Lawrence Livermore National Laboratory, Livermore, USA, Woodruff School of Mechanical Engineering
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1562143
Alternate Identifier(s):
OSTI ID: 1569664
Report Number(s):
LLNL-JRNL-765187
Journal ID: ISSN 2046-2069; RSCACL
Grant/Contract Number:  
LDRD-16-ERD-047; AC52-07NA27344
Resource Type:
Published Article
Journal Name:
RSC Advances
Additional Journal Information:
Journal Name: RSC Advances Journal Volume: 9 Journal Issue: 49; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry (RSC)
Country of Publication:
United Kingdom
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Ladner, Ian S., Cullinan, Michael A., and Saha, Sourabh K. Tensile properties of polymer nanowires fabricated via two-photon lithography. United Kingdom: N. p., 2019. Web. doi:10.1039/C9RA02350J.
Ladner, Ian S., Cullinan, Michael A., & Saha, Sourabh K. Tensile properties of polymer nanowires fabricated via two-photon lithography. United Kingdom. doi:10.1039/C9RA02350J.
Ladner, Ian S., Cullinan, Michael A., and Saha, Sourabh K. Fri . "Tensile properties of polymer nanowires fabricated via two-photon lithography". United Kingdom. doi:10.1039/C9RA02350J.
@article{osti_1562143,
title = {Tensile properties of polymer nanowires fabricated via two-photon lithography},
author = {Ladner, Ian S. and Cullinan, Michael A. and Saha, Sourabh K.},
abstractNote = {Two-photon lithography enables fabrication of complex 3D structures with nanoscale features. However, its utility is limited by the lack of knowledge about the process–property relationship. Here, we have designed micro-electro-mechanical systems (MEMS)-based miniaturized tensile testers to measure the stress–strain response of the individual polymer nanowires. Measurements demonstrate that geometrically indistinguishable nanowires can exhibit widely varying material behavior ranging from brittle to soft plastic based on processing conditions. In addition, a distinct size-scaling effect was observed for post-processed nanowires wherein thinner nanowires have up to 2 times higher properties. The process–property characterization presented here will be critical for predictive design of functional 3D structures with nanoscale features.},
doi = {10.1039/C9RA02350J},
journal = {RSC Advances},
number = 49,
volume = 9,
place = {United Kingdom},
year = {2019},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1039/C9RA02350J

Figures / Tables:

Fig. 1 Fig. 1: Micro-electro-mechanical systems (MEMS)-based miniaturized tensile tester. (a) Optical image of the unpackaged tensile tester illustrating the actuator and the two sensors. (b and c) Scanning electron microscope images of the sensor pads and the polymer nanowire printed across the two stages. (d) Schematic representation of printing of amore » nanowire directly on top of a MEMS sensor via two-photon lithography.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.