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Force- and Time-Dependent Feature Size and Shape Control in Molecular Printing via Polymer-Pen Lithography

Authors

  • Xing Liao,

    1. International Institute for Nanotechnology 2145 Sheridan Road, Evanston, IL 60208 (USA)
    2. Department of Materials Science and Engineering Northwestern University 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Adam B. Braunschweig,

    1. International Institute for Nanotechnology 2145 Sheridan Road, Evanston, IL 60208 (USA)
    2. Department of Chemistry Northwestern University 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Zijian Zheng,

    1. International Institute for Nanotechnology 2145 Sheridan Road, Evanston, IL 60208 (USA)
    2. Department of Chemistry Northwestern University 2145 Sheridan Road, Evanston, IL 60208 (USA)
    3. Current address: Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong SAR)
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  • Chad A. Mirkin

    Corresponding author
    1. International Institute for Nanotechnology 2145 Sheridan Road, Evanston, IL 60208 (USA)
    2. Department of Materials Science and Engineering Northwestern University 2145 Sheridan Road, Evanston, IL 60208 (USA)
    3. Department of Chemistry Northwestern University 2145 Sheridan Road, Evanston, IL 60208 (USA)
    • International Institute for Nanotechnology 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • XL and ABB contributed equally to this work. CAM acknowledges a DARPA-SPAWAR, the AFOSR, and the NSF-NSEC program for generous support of this work. ABB is grateful to the NIH for financial support (5F32CA136148-02). We thank Fengwei Huo for suggesting of the use of a scale in these experiments.

Abstract

original image

Polymer-pen lithography is a scanning-probe contact-printing method that can control feature diameter from many micrometers to sub-100nm in a single writing operation as a result of force- and time-dependent ink transport. A quantitative model that relates the force between the elastomeric tips and the substrate to the feature edge length has been derived and experimentally confirmed (see image).

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