---
_id: '10587'
abstract:
- lang: eng
  text: Access to a blossoming library of colloidal nanomaterials provides building
    blocks for complex assembled materials. The journey to bring these prospects to
    fruition stands to benefit from the application of advanced processing methods.
    Epitaxially connected nanocrystal (or quantum dot) superlattices present a captivating
    model system for mesocrystals with intriguing emergent properties. The conventional
    processing approach to creating these materials involves assembling and attaching
    the constituent nanocrystals at the interface between two immiscible fluids. Processing
    small liquid volumes of the colloidal nanocrystal solution involves several complexities
    arising from the concurrent spreading, evaporation, assembly, and attachment.
    The ability of inkjet printers to deliver small (typically picoliter) liquid volumes
    with precise positioning is attractive to advance fundamental insights into the
    processing science, and thereby potentially enable new routes to incorporate the
    epitaxially connected superlattices into technology platforms. In this study,
    we identified the processing window of opportunity, including nanocrystal ink
    formulation and printing approach to enable delivery of colloidal nanocrystals
    from an inkjet nozzle onto the surface of a sessile droplet of the immiscible
    subphase. We demonstrate how inkjet printing can be scaled-down to enable the
    fabrication of epitaxially connected superlattices on patterned sub-millimeter
    droplets. We anticipate that insights from this work will spur on future advances
    to enable more mechanistic insights into the assembly processes and new avenues
    to create high-fidelity superlattices.
acknowledgement: This project was supported by the US Department of Energy through
  award (No. DE-SC0018026). The work was performed in part at the Cornell NanoScale
  Facility, a member of the National Nanotechnology Coordinated Infrastructure (NNCI),
  which is supported by the National Science Foundation (No. NNCI-1542081) and in
  part at the Cornell Center for Materials Research with funding from the NSF MRSEC
  program (No. DMR-1719875). The authors thank Beth Rhodes for the technical assistance
  with inkjet printing, and E. Peretz and Q. Wen for the early exploratory experiments.
article_processing_charge: No
article_type: original
author:
- first_name: Daniel
  full_name: Balazs, Daniel
  id: 302BADF6-85FC-11EA-9E3B-B9493DDC885E
  last_name: Balazs
  orcid: 0000-0001-7597-043X
- first_name: N. Deniz
  full_name: Erkan, N. Deniz
  last_name: Erkan
- first_name: Michelle
  full_name: Quien, Michelle
  last_name: Quien
- first_name: Tobias
  full_name: Hanrath, Tobias
  last_name: Hanrath
citation:
  ama: Balazs D, Erkan ND, Quien M, Hanrath T. Inkjet printing of epitaxially connected
    nanocrystal superlattices. <i>Nano Research</i>. 2022;15(5):4536–4543. doi:<a
    href="https://doi.org/10.1007/s12274-021-4022-7">10.1007/s12274-021-4022-7</a>
  apa: Balazs, D., Erkan, N. D., Quien, M., &#38; Hanrath, T. (2022). Inkjet printing
    of epitaxially connected nanocrystal superlattices. <i>Nano Research</i>. Springer
    Nature. <a href="https://doi.org/10.1007/s12274-021-4022-7">https://doi.org/10.1007/s12274-021-4022-7</a>
  chicago: Balazs, Daniel, N. Deniz Erkan, Michelle Quien, and Tobias Hanrath. “Inkjet
    Printing of Epitaxially Connected Nanocrystal Superlattices.” <i>Nano Research</i>.
    Springer Nature, 2022. <a href="https://doi.org/10.1007/s12274-021-4022-7">https://doi.org/10.1007/s12274-021-4022-7</a>.
  ieee: D. Balazs, N. D. Erkan, M. Quien, and T. Hanrath, “Inkjet printing of epitaxially
    connected nanocrystal superlattices,” <i>Nano Research</i>, vol. 15, no. 5. Springer
    Nature, pp. 4536–4543, 2022.
  ista: Balazs D, Erkan ND, Quien M, Hanrath T. 2022. Inkjet printing of epitaxially
    connected nanocrystal superlattices. Nano Research. 15(5), 4536–4543.
  mla: Balazs, Daniel, et al. “Inkjet Printing of Epitaxially Connected Nanocrystal
    Superlattices.” <i>Nano Research</i>, vol. 15, no. 5, Springer Nature, 2022, pp.
    4536–4543, doi:<a href="https://doi.org/10.1007/s12274-021-4022-7">10.1007/s12274-021-4022-7</a>.
  short: D. Balazs, N.D. Erkan, M. Quien, T. Hanrath, Nano Research 15 (2022) 4536–4543.
date_created: 2022-01-02T23:01:34Z
date_published: 2022-05-01T00:00:00Z
date_updated: 2023-08-02T13:47:21Z
day: '01'
department:
- _id: MaIb
doi: 10.1007/s12274-021-4022-7
external_id:
  isi:
  - '000735340300001'
intvolume: '        15'
isi: 1
issue: '5'
keyword:
- interfacial assembly
- colloidal nanocrystal
- superlattice
- inkjet printing
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.osti.gov/biblio/1837946
month: '05'
oa: 1
oa_version: Submitted Version
page: 4536–4543
publication: Nano Research
publication_identifier:
  eissn:
  - 1998-0000
  issn:
  - 1998-0124
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Inkjet printing of epitaxially connected nanocrystal superlattices
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 15
year: '2022'
...