Low-Cost PVD Shadow Masks with Submillimeter Resolution from Laser-Cut Paper [Elektronisk resurs]
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Elhami Nik, Farzad (författare)
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Matthiesen, Isabelle (författare)
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Herland, Anna (författare)
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Winkler, Thomas (författare)
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KTH Skolan för elektroteknik och datavetenskap (EECS) (utgivare)
- Publicerad: Basel : MDPI, 2020
- Engelska.
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Ingår i: Micromachines. - 2072-666X. ; 11:7
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Sammanfattning
Ämnesord
Stäng
- We characterize an affordable method of producing stencils for submillimeter physical vapor deposition (PVD) by using paper and a benchtop laser cutter. Patterning electrodes or similar features on top of organic or biological substrates is generally not possible using standard photolithography. Shadow masks, traditionally made of silicon-based membranes, circumvent the need for aggressive solvents but suffer from high costs. Here, we evaluate shadow masks fabricated by CO2 laser processing from quantitative filter papers. Such papers are stiff and dimensionally stable, resilient in handling, and cut without melting or redeposition. Using two exemplary interdigitated electrode designs, we quantify the line resolution achievable with both high-quality and standard lenses, as well as the positional accuracy across multiple length scales. Additionally, we assess the gap between such laser-cut paper masks and a substrate, and quantify feature reproduction onto polycarbonate membranes. We find that ~100 µm line widths are achievable independent of lens type and that average positional accuracy is better than ±100 µm at 4”-wafer scale. Although this falls well short of the micron-size features achievable with typical shadow masks, resolution in the tenths to tens of millimeters is entirely sufficient for applications from contact pads to electrochemical cells, allowing new functionalities on fragile materials.
Ämnesord
- Engineering and Technology (hsv)
- Nano Technology (hsv)
- Teknik och teknologier (hsv)
- Nanoteknik (hsv)
- Materials Engineering (hsv)
- Manufacturing, Surface and Joining Technology (hsv)
- Materialteknik (hsv)
- Bearbetnings-, yt- och fogningsteknik (hsv)
- Electrical Engineering, Electronic Engineering, Information Engineering (hsv)
- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv)
- Elektroteknik och elektronik (hsv)
- Annan elektroteknik och elektronik (hsv)
- Materials Science and Engineering (kth)
- Teknisk materialvetenskap (kth)
- Electrical Engineering (kth)
- Elektro- och systemteknik (kth)
Genre
- government publication (marcgt)
Indexterm och SAB-rubrik
- shadow mask
- stencil lithography
- CO2 laser
- paper
- metal deposition
Inställningar
Hjälp
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Micromachines