Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal Inkjet
In this paper, the failure mechanisms of the thermal inkjet thin-film resistors are recognized. Additionally, designs of resistors to overcome these mechanisms are suggested and tested by simulation and experiment. The resulting resistors are shown to have improved lifetimes, spanning an order of ma...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-05-01
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| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/11/5/499 |
| _version_ | 1797567993683640320 |
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| author | Elkana Bar-Levav Moshe Witman Moshe Einat |
| author_facet | Elkana Bar-Levav Moshe Witman Moshe Einat |
| author_sort | Elkana Bar-Levav |
| collection | DOAJ |
| description | In this paper, the failure mechanisms of the thermal inkjet thin-film resistors are recognized. Additionally, designs of resistors to overcome these mechanisms are suggested and tested by simulation and experiment. The resulting resistors are shown to have improved lifetimes, spanning an order of magnitude up to 2 × 10<sup>9</sup> pulses. The thermal failure mechanisms were defined according to the electric field magnitude in three critical points—the resistor center, the resistor–conductor edge, and the resistor thermal “hot spots”. Lowering the thermal gradients between these points will lead to the improved lifetime of the resistors. Using MATLAB PDE simulations, various resistors shapes, with different electric field ratios in the hot spots, were designed and manufactured on an 8″ silicon wafer. A series of lifetime experiments were conducted on the resistors, and a strong relation between the shape and the lifetime of the resistor was found. These results have immediate ramifications regarding the different printing apparatuses which function with thermal inkjet technology, allowing the commercial production of larger thermal printheads with high MTBF rate. Such heads may fit fast and large 3D printers. |
| first_indexed | 2024-03-10T19:50:05Z |
| format | Article |
| id | doaj.art-e69b2a4ecca641e1b195efa9b18f94ad |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T19:50:05Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-e69b2a4ecca641e1b195efa9b18f94ad2023-11-20T00:31:20ZengMDPI AGMicromachines2072-666X2020-05-0111549910.3390/mi11050499Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal InkjetElkana Bar-Levav0Moshe Witman1Moshe Einat2Department of Electrical and Electronic Engineering, Ariel University, Ariel 4070000, IsraelDepartment of Electrical and Electronic Engineering, Ariel University, Ariel 4070000, IsraelDepartment of Electrical and Electronic Engineering, Ariel University, Ariel 4070000, IsraelIn this paper, the failure mechanisms of the thermal inkjet thin-film resistors are recognized. Additionally, designs of resistors to overcome these mechanisms are suggested and tested by simulation and experiment. The resulting resistors are shown to have improved lifetimes, spanning an order of magnitude up to 2 × 10<sup>9</sup> pulses. The thermal failure mechanisms were defined according to the electric field magnitude in three critical points—the resistor center, the resistor–conductor edge, and the resistor thermal “hot spots”. Lowering the thermal gradients between these points will lead to the improved lifetime of the resistors. Using MATLAB PDE simulations, various resistors shapes, with different electric field ratios in the hot spots, were designed and manufactured on an 8″ silicon wafer. A series of lifetime experiments were conducted on the resistors, and a strong relation between the shape and the lifetime of the resistor was found. These results have immediate ramifications regarding the different printing apparatuses which function with thermal inkjet technology, allowing the commercial production of larger thermal printheads with high MTBF rate. Such heads may fit fast and large 3D printers.https://www.mdpi.com/2072-666X/11/5/4992D printhead3D printingthermal inkjetthin-film resistors |
| spellingShingle | Elkana Bar-Levav Moshe Witman Moshe Einat Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal Inkjet Micromachines 2D printhead 3D printing thermal inkjet thin-film resistors |
| title | Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal Inkjet |
| title_full | Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal Inkjet |
| title_fullStr | Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal Inkjet |
| title_full_unstemmed | Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal Inkjet |
| title_short | Thin-Film MEMS Resistors with Enhanced Lifetime for Thermal Inkjet |
| title_sort | thin film mems resistors with enhanced lifetime for thermal inkjet |
| topic | 2D printhead 3D printing thermal inkjet thin-film resistors |
| url | https://www.mdpi.com/2072-666X/11/5/499 |
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