---
_id: '12424'
abstract:
- lang: eng
  text: Additive manufacturing of optical, electrical, and mechanical components is
    a beneficial approach for the rapid prototyping of components and error elimination,
    with short turnaround times. However, additively manufactured components usually
    have rough surfaces that need post-processing, particularly for optical components,
    where the surface roughness must be a small fraction of the wavelength. We demonstrate
    an innovative and economical approach by dip-coating with the same resin used
    for printing in a simple post-processing step, providing high transparency to
    the 3D-printed optical components and reducing surface roughness while achieving
    perfect index matching of the coating layer. The surface roughness of the 3D-printed
    optical components drops to 5 nm (arithmetic average) after the dip-coating process.
    We observed significant performance enhancements after comparing the unprocessed
    optical components and the dip-coated optical components, including optical transparency
    and a shiny surface finish for previously rough surfaces.
article_number: '210'
author:
- first_name: Abhijeet Narendra
  full_name: Shrotri, Abhijeet Narendra
  id: '74090'
  last_name: Shrotri
  orcid: 0000-0003-2116-156X
- first_name: Sascha
  full_name: Preu, Sascha
  last_name: Preu
- first_name: Oliver
  full_name: Stübbe, Oliver
  id: '51864'
  last_name: Stübbe
  orcid: 0000-0001-7293-6893
citation:
  ama: 'Shrotri AN, Preu S, Stübbe O. Achieving Transparency and Minimizing Losses
    of Rough Additively Manufactured Optical Components by a Dip-Coating Surface Finish.
    <i>Coatings : open access journal</i>. 2025;15(2). doi:<a href="https://doi.org/10.3390/coatings15020210">10.3390/coatings15020210</a>'
  apa: 'Shrotri, A. N., Preu, S., &#38; Stübbe, O. (2025). Achieving Transparency
    and Minimizing Losses of Rough Additively Manufactured Optical Components by a
    Dip-Coating Surface Finish. <i>Coatings : Open Access Journal</i>, <i>15</i>(2),
    Article 210. <a href="https://doi.org/10.3390/coatings15020210">https://doi.org/10.3390/coatings15020210</a>'
  bjps: '<b>Shrotri AN, Preu S and Stübbe O</b> (2025) Achieving Transparency and
    Minimizing Losses of Rough Additively Manufactured Optical Components by a Dip-Coating
    Surface Finish. <i>Coatings : open access journal</i> <b>15</b>.'
  chicago: 'Shrotri, Abhijeet Narendra, Sascha Preu, and Oliver Stübbe. “Achieving
    Transparency and Minimizing Losses of Rough Additively Manufactured Optical Components
    by a Dip-Coating Surface Finish.” <i>Coatings : Open Access Journal</i> 15, no.
    2 (2025). <a href="https://doi.org/10.3390/coatings15020210">https://doi.org/10.3390/coatings15020210</a>.'
  chicago-de: 'Shrotri, Abhijeet Narendra, Sascha Preu und Oliver Stübbe. 2025. Achieving
    Transparency and Minimizing Losses of Rough Additively Manufactured Optical Components
    by a Dip-Coating Surface Finish. <i>Coatings : open access journal</i> 15, Nr.
    2. doi:<a href="https://doi.org/10.3390/coatings15020210">10.3390/coatings15020210</a>,
    .'
  din1505-2-1: '<span style="font-variant:small-caps;">Shrotri, Abhijeet Narendra</span>
    ; <span style="font-variant:small-caps;">Preu, Sascha</span> ; <span style="font-variant:small-caps;">Stübbe,
    Oliver</span>: Achieving Transparency and Minimizing Losses of Rough Additively
    Manufactured Optical Components by a Dip-Coating Surface Finish. In: <i>Coatings :
    open access journal</i> Bd. 15. Basel, MDPI AG (2025), Nr. 2'
  havard: 'A.N. Shrotri, S. Preu, O. Stübbe, Achieving Transparency and Minimizing
    Losses of Rough Additively Manufactured Optical Components by a Dip-Coating Surface
    Finish, Coatings : Open Access Journal. 15 (2025).'
  ieee: 'A. N. Shrotri, S. Preu, and O. Stübbe, “Achieving Transparency and Minimizing
    Losses of Rough Additively Manufactured Optical Components by a Dip-Coating Surface
    Finish,” <i>Coatings : open access journal</i>, vol. 15, no. 2, Art. no. 210,
    2025, doi: <a href="https://doi.org/10.3390/coatings15020210">10.3390/coatings15020210</a>.'
  mla: 'Shrotri, Abhijeet Narendra, et al. “Achieving Transparency and Minimizing
    Losses of Rough Additively Manufactured Optical Components by a Dip-Coating Surface
    Finish.” <i>Coatings : Open Access Journal</i>, vol. 15, no. 2, 210, 2025, <a
    href="https://doi.org/10.3390/coatings15020210">https://doi.org/10.3390/coatings15020210</a>.'
  short: 'A.N. Shrotri, S. Preu, O. Stübbe, Coatings : Open Access Journal 15 (2025).'
  ufg: '<b>Shrotri, Abhijeet Narendra/Preu, Sascha/Stübbe, Oliver</b>: Achieving Transparency
    and Minimizing Losses of Rough Additively Manufactured Optical Components by a
    Dip-Coating Surface Finish, in: <i>Coatings : open access journal</i> 15 (2025),
    H. 2.'
  van: 'Shrotri AN, Preu S, Stübbe O. Achieving Transparency and Minimizing Losses
    of Rough Additively Manufactured Optical Components by a Dip-Coating Surface Finish.
    Coatings : open access journal. 2025;15(2).'
date_created: 2025-02-11T11:56:38Z
date_updated: 2025-02-12T08:37:34Z
department:
- _id: DEP5020
- _id: DEP6020
doi: 10.3390/coatings15020210
intvolume: '        15'
issue: '2'
keyword:
- additive manufacturing
- post-processing
- optics
- dip-coating
language:
- iso: eng
place: Basel
publication: 'Coatings : open access journal'
publication_identifier:
  issn:
  - 2079-6412
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Achieving Transparency and Minimizing Losses of Rough Additively Manufactured
  Optical Components by a Dip-Coating Surface Finish
type: scientific_journal_article
user_id: '83781'
volume: 15
year: '2025'
...