Details
| Original language | English |
|---|---|
| Title of host publication | Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVIII |
| Editors | Christophe Moser, Eva Blasco, Debashis Chanda |
| Publisher | SPIE |
| ISBN (electronic) | 9781510685109 |
| Publication status | Published - 19 Mar 2025 |
| Event | Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVIII 2025 - San Francisco, United States Duration: 25 Jan 2025 → 31 Jan 2025 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 13381 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
Lenses are essential components in photonic systems to enable compact and high performance optical applications. While various lens fabrication methods exist, the influence of gravity on these processes has remained understudied due to limited access to variable gravity environments. This study leverages the Einstein-Elevator, the first third-generation drop tower in operation, to investigate the effects of gravity on the fabrication of polymer-based microlenses, which are produced by jet dispensing of sessile photopolymer droplets onto a glass substrate and subsequent UV curing. Systematic experiments were conducted under six different gravitational conditions (0 g, 0.17 g, 0.38 g, 0.6 g, 0.8 g, and 1 g)*. The manufactured lenses were analyzed for morphological parameters including curvature, height, diameter, and contact angle. The findings reveal that while gravity has minimal effect on the morphology of small lenses, larger lenses show noticeable changes under reduced gravity. Through this study, it is possible to achieve tailored droplet morphologies by varying gravity. These results show that gravity influences manufacturing processes and that gravity is an essential parameter, which is not only relevant for future manufacturing processes in space.
Keywords
- additive manufacturing, adjusted gravity, dispensed lenses, geometric properties of sessile drops, in-space manufacturing
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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- Apa
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- BibTeX
- RIS
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVIII. ed. / Christophe Moser; Eva Blasco; Debashis Chanda. SPIE, 2025. 1338109 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13381).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Dispensing of microlenses under adjustable gravity
AU - Fütterer, Laura
AU - Evertz, Andreas
AU - Galati, Marco Nicolas
AU - Overmeyer, Ludger
AU - Lotz, Christoph
N1 - Publisher Copyright: © 2025 SPIE.
PY - 2025/3/19
Y1 - 2025/3/19
N2 - Lenses are essential components in photonic systems to enable compact and high performance optical applications. While various lens fabrication methods exist, the influence of gravity on these processes has remained understudied due to limited access to variable gravity environments. This study leverages the Einstein-Elevator, the first third-generation drop tower in operation, to investigate the effects of gravity on the fabrication of polymer-based microlenses, which are produced by jet dispensing of sessile photopolymer droplets onto a glass substrate and subsequent UV curing. Systematic experiments were conducted under six different gravitational conditions (0 g, 0.17 g, 0.38 g, 0.6 g, 0.8 g, and 1 g)*. The manufactured lenses were analyzed for morphological parameters including curvature, height, diameter, and contact angle. The findings reveal that while gravity has minimal effect on the morphology of small lenses, larger lenses show noticeable changes under reduced gravity. Through this study, it is possible to achieve tailored droplet morphologies by varying gravity. These results show that gravity influences manufacturing processes and that gravity is an essential parameter, which is not only relevant for future manufacturing processes in space.
AB - Lenses are essential components in photonic systems to enable compact and high performance optical applications. While various lens fabrication methods exist, the influence of gravity on these processes has remained understudied due to limited access to variable gravity environments. This study leverages the Einstein-Elevator, the first third-generation drop tower in operation, to investigate the effects of gravity on the fabrication of polymer-based microlenses, which are produced by jet dispensing of sessile photopolymer droplets onto a glass substrate and subsequent UV curing. Systematic experiments were conducted under six different gravitational conditions (0 g, 0.17 g, 0.38 g, 0.6 g, 0.8 g, and 1 g)*. The manufactured lenses were analyzed for morphological parameters including curvature, height, diameter, and contact angle. The findings reveal that while gravity has minimal effect on the morphology of small lenses, larger lenses show noticeable changes under reduced gravity. Through this study, it is possible to achieve tailored droplet morphologies by varying gravity. These results show that gravity influences manufacturing processes and that gravity is an essential parameter, which is not only relevant for future manufacturing processes in space.
KW - additive manufacturing
KW - adjusted gravity
KW - dispensed lenses
KW - geometric properties of sessile drops
KW - in-space manufacturing
UR - http://www.scopus.com/inward/record.url?scp=105002057108&partnerID=8YFLogxK
U2 - 10.1117/12.3042899
DO - 10.1117/12.3042899
M3 - Conference contribution
AN - SCOPUS:105002057108
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVIII
A2 - Moser, Christophe
A2 - Blasco, Eva
A2 - Chanda, Debashis
PB - SPIE
T2 - Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVIII 2025
Y2 - 25 January 2025 through 31 January 2025
ER -