Abstract
The fabrication of precise hemispherical shape is challenging with standard planar lithography techniques. A suitable alternative is the fabrication by inkjet printing. This paper presents a method based on drop-on-demand inkjet printing on pre-patterned silicon substrates allowing the controlled fabrication of SU-8 hemispherical cup-like structures with inner cavities of sub-nano-liter volumes. Examples are given for cups of 100μm in diameter with inner cavity volumes of 5pL, 20pL and 45pL. Arrays of 360 hemispherical SU-8 cups have been fabricated with a yield above 96%. The 4% of exceptions are also described and shown as a method for achieving almost complete SU-8 spheres.
Original language | English |
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Title of host publication | 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2013 |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 1119-1122 |
Number of pages | 4 |
ISBN (Print) | 9781467363525 |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |
Event | IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS) 2013 - Dushu Lake Hotel, Suzhou, China Duration: 7 Apr 2013 → 10 Apr 2013 Conference number: 8th http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6559677 |
Conference
Conference | IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS) 2013 |
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Abbreviated title | NEMS 2013 |
Country/Territory | China |
City | Suzhou |
Period | 7/04/13 → 10/04/13 |
Internet address |
Keywords
- drop-on-demand inkjet printing
- hemispherical micro cups
- micro shape array
- spherical SU-8 structures