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Title: The Role of Liquid Ink Transport in the Direct Placement of Quantum Dot Emitters onto Sub-Micrometer Antennas by Dip-Pen Nanolithography

Here, dip-pen nanolithography (DPN) is used to precisely position core/thick-shell (“giant”) quantum dots (gQDs; ≥10 nm in diameter) exclusively on top of silicon nanodisk antennas (≈500 nm diameter pillars with a height of ≈200 nm), resulting in periodic arrays of hybrid nanostructures and demonstrating a facile integration strategy toward next-generation quantum light sources. A three-step reading-inking-writing approach is employed, where atomic force microscopy (AFM) images of the pre-patterned substrate topography are used as maps to direct accurate placement of nanocrystals. The DPN “ink” comprises gQDs suspended in a non-aqueous carrier solvent, o-dichlorobenzene. Systematic analyses of factors influencing deposition rate for this non-conventional DPN ink are described for flat substrates and used to establish the conditions required to achieve small (sub-500 nm) feature sizes, namely: dwell time, ink-substrate contact angle and ink volume. Finally, it is shown that the rate of solvent transport controls the feature size in which gQDs are found on the substrate, but also that the number and consistency of nanocrystals deposited depends on the stability of the gQD suspension. In conclusion, the results lay the groundwork for expanded use of nanocrystal liquid inks and DPN for fabrication of multi-component nanostructures that are challenging to create using traditionalmore » lithographic techniques.« less
Authors:
 [1] ; ORCiD logo [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [2] ;  [3] ; ORCiD logo [1] ;  [4] ; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. The Australian National University, Canberra (Australia)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  4. Advanced Creative Solutions Technology, Carlsbad, CA (United States)
Publication Date:
Report Number(s):
LA-UR-18-24213
Journal ID: ISSN 1613-6810
Grant/Contract Number:
AC52-06NA25396; NA0003525
Type:
Accepted Manuscript
Journal Name:
Small
Additional Journal Information:
Journal Volume: 14; Journal Issue: 31; Journal ID: ISSN 1613-6810
Publisher:
Wiley
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; dip-pen nanolithography; nanofabrication; optical nanoantenna; quantum dots
OSTI Identifier:
1482002
Alternate Identifier(s):
OSTI ID: 1457509

Dawood, Farah, Wang, Jun, Schulze, Peter Andreas, Sheehan, Chris J., Buck, Matthew R., Dennis, Allison M., Majumder, Somak, Krishnamurthy, Sachi, Ticknor, Matthew, Staude, Isabelle, Brener, Igal, Goodwin, Peter Marvin, Amro, Nabil A., and Hollingsworth, Jennifer Ann. The Role of Liquid Ink Transport in the Direct Placement of Quantum Dot Emitters onto Sub-Micrometer Antennas by Dip-Pen Nanolithography. United States: N. p., Web. doi:10.1002/smll.201801503.
Dawood, Farah, Wang, Jun, Schulze, Peter Andreas, Sheehan, Chris J., Buck, Matthew R., Dennis, Allison M., Majumder, Somak, Krishnamurthy, Sachi, Ticknor, Matthew, Staude, Isabelle, Brener, Igal, Goodwin, Peter Marvin, Amro, Nabil A., & Hollingsworth, Jennifer Ann. The Role of Liquid Ink Transport in the Direct Placement of Quantum Dot Emitters onto Sub-Micrometer Antennas by Dip-Pen Nanolithography. United States. doi:10.1002/smll.201801503.
Dawood, Farah, Wang, Jun, Schulze, Peter Andreas, Sheehan, Chris J., Buck, Matthew R., Dennis, Allison M., Majumder, Somak, Krishnamurthy, Sachi, Ticknor, Matthew, Staude, Isabelle, Brener, Igal, Goodwin, Peter Marvin, Amro, Nabil A., and Hollingsworth, Jennifer Ann. 2018. "The Role of Liquid Ink Transport in the Direct Placement of Quantum Dot Emitters onto Sub-Micrometer Antennas by Dip-Pen Nanolithography". United States. doi:10.1002/smll.201801503.
@article{osti_1482002,
title = {The Role of Liquid Ink Transport in the Direct Placement of Quantum Dot Emitters onto Sub-Micrometer Antennas by Dip-Pen Nanolithography},
author = {Dawood, Farah and Wang, Jun and Schulze, Peter Andreas and Sheehan, Chris J. and Buck, Matthew R. and Dennis, Allison M. and Majumder, Somak and Krishnamurthy, Sachi and Ticknor, Matthew and Staude, Isabelle and Brener, Igal and Goodwin, Peter Marvin and Amro, Nabil A. and Hollingsworth, Jennifer Ann},
abstractNote = {Here, dip-pen nanolithography (DPN) is used to precisely position core/thick-shell (“giant”) quantum dots (gQDs; ≥10 nm in diameter) exclusively on top of silicon nanodisk antennas (≈500 nm diameter pillars with a height of ≈200 nm), resulting in periodic arrays of hybrid nanostructures and demonstrating a facile integration strategy toward next-generation quantum light sources. A three-step reading-inking-writing approach is employed, where atomic force microscopy (AFM) images of the pre-patterned substrate topography are used as maps to direct accurate placement of nanocrystals. The DPN “ink” comprises gQDs suspended in a non-aqueous carrier solvent, o-dichlorobenzene. Systematic analyses of factors influencing deposition rate for this non-conventional DPN ink are described for flat substrates and used to establish the conditions required to achieve small (sub-500 nm) feature sizes, namely: dwell time, ink-substrate contact angle and ink volume. Finally, it is shown that the rate of solvent transport controls the feature size in which gQDs are found on the substrate, but also that the number and consistency of nanocrystals deposited depends on the stability of the gQD suspension. In conclusion, the results lay the groundwork for expanded use of nanocrystal liquid inks and DPN for fabrication of multi-component nanostructures that are challenging to create using traditional lithographic techniques.},
doi = {10.1002/smll.201801503},
journal = {Small},
number = 31,
volume = 14,
place = {United States},
year = {2018},
month = {6}
}

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