Parameter Design of High-Resolution E-Jet Micro-Fabrication Process by Taguchi Utility Approach

2018 ◽  
Vol 8 (3) ◽  
pp. 44-58 ◽  
Author(s):  
Raju Das ◽  
Shibendu Shekhar Roy
Keyword(s):  
High Resolution ◽  
Flexible Electronics ◽  
Applied Voltage ◽  
Control Factor ◽  
Successful Implementation ◽  
Utility Analysis ◽  
Micro Fabrication ◽  
Utility Concept ◽  
Single Response

This article describes how an electrohydrodynamic inkjet, or E-jet, is a high-resolution micro-fabrication technology for flexible electronics application. Its operation depends on several process control parameters like applied voltage, flow rate of the material, stand-off height, type of ink material. High-resolution deposition along with ejection frequency is the performance parameter of E-jet. In this article, an attempt is made to design the process parameters in such way, that it could simultaneously satisfy both the performance characteristics of the E-jet process. A Taguchi robust design based utility concept is applied to optimize the multi-response E-jet process through a case study. Utility analysis converts multi-response scenario into a single response by calculating overall utility value, which is optimized by signal to noise (S/N) analysis. Analysis of variance ANOVA found applied voltage is the most influential control factor in the investigated region. The anticipated improvement in fabrication operation shows the successful implementation of the aforesaid methodology.

Selection of Suitable Control Parameters for Proper High-Resolution Deposition Performance of E-Jet Microfabrication Process

2021 ◽  
pp. 193-214
Author(s):  
Raju Das ◽  
Shibendu Shekhar Roy
Keyword(s):  
High Resolution ◽  
Applied Voltage ◽  
Optimization Method ◽  
Control Factor ◽  
Successful Implementation ◽  
Control Parameters ◽  
Utility Concept ◽  
Grey Relational Grade ◽  
Microfabrication Technology ◽  
Grey Relational

E-jet is a high-resolution microfabrication technology. Its operation depends on several process control parameters like applied voltage, flow rate of the material, stand-off height, type of ink material. High-resolution deposition along with high ejection frequency is the performance parameter of E-jet. In the present study, an attempt is made to design the process parameters in such a way that it could simultaneously satisfy both the performance characteristics of the E-jet process. A Taguchi robust design-based utility concept is applied to optimize the multi-response E-jet process through a case study. The optimization result is compared with another multi-objective optimization method called Grey relational grade analysis. The comparative analysis showed that both the methodologies identified the same process parameter combination for improved E-jet performance. Analysis of variance found applied voltage is the most influential control factor in the investigated region. The anticipated improvement in performance shows the successful implementation of the aforesaid methodology.

Empowering professionalism in mission-oriented innovation

2021 ◽  
Author(s):  
Markus M Bugge ◽  
Fazilat Siddiq
Keyword(s):  
Digital Literacy ◽  
Primary Schools ◽  
Teaching Practices ◽  
Digital Technologies ◽  
Successful Implementation ◽  
Supply Side ◽  
Innovative Teaching ◽  
Teaching Tools

Abstract In the literature on mission-oriented innovation supply side and tech-oriented approaches have been complemented by broader and more inclusive societal approaches. Here, it is highlighted that both directionality and broad anchoring of diverse stakeholders across private, public, and civic domains are key to successful implementation. Still, it is unclear how these dimensions relate and unfold in practice. Using digital literacy in education as an example of mission-oriented innovation, this paper investigates what prerequisites and capabilities are needed to envision and govern such processes. Based upon a case study of innovative teaching practices in twenty-five classes at ten primary schools in Norway, the paper finds that the motivation, dedication, and engagement of the teachers is not primarily related to the digital technologies themselves, but to the professional and pedagogical anchoring of the digital teaching tools. The mobilization of the professionalism of the teachers is enabled by a process of balanced empowerment.

scholarly journals A Methodology for Harmonizing Safety and Health Scales in Occupational Risk Assessment

2021 ◽  
Vol 18 (9) ◽  
pp. 4849
Author(s):  
Zuzhen Ji ◽  
Dirk Pons ◽  
John Pearse
Keyword(s):  
Risk Assessment ◽  
Health And Safety ◽  
Assessment Method ◽  
Assessment Process ◽  
Successful Implementation ◽  
Health Issues ◽  
Public Health Perspective ◽  
Chronic Health ◽  
Risk Assessment Method

Successful implementation of Health and Safety (H&S) systems requires an effective mechanism to assess risk. Existing methods focus primarily on measuring the safety aspect; the risk of an accident is determined based on the product of severity of consequence and likelihood of the incident arising. The health component, i.e., chronic harm, is more difficult to assess. Partially, this is due to both consequences and the likelihood of health issues, which may be indeterminate. There is a need to develop a quantitative risk measurement for H&S risk management and with better representation for chronic health issues. The present paper has approached this from a different direction, by adopting a public health perspective of quality of life. We have then changed the risk assessment process to accommodate this. This was then applied to a case study. The case study showed that merely including the chronic harm scales appeared to be sufficient to elicit a more detailed consideration of hazards for chronic harm. This suggests that people are not insensitive to chronic harm hazards, but benefit from having a framework in which to communicate them. A method has been devised to harmonize safety and harm risk assessments. The result was a comprehensive risk assessment method with consideration of safety accidents and chronic health issues. This has the potential to benefit industry by making chronic harm more visible and hence more preventable.

scholarly journals e-Navigating in highly-constrained waters: a case study of the Vistula Lagoon

2021 ◽  
pp. 1-10
Author(s):  
Adam Weintrit ◽  
Jacek Pietraszkiewicz ◽  
Wiesław Piotrzkowski ◽  
Wojciech Tycholiz
Keyword(s):  
High Resolution ◽  
Global Solution ◽  
Transition Process ◽  
Practical Implementation ◽  
Vistula Lagoon ◽  
Digital Era ◽  
High Resolution Bathymetry ◽  
Marine Navigation ◽  
The Vistula Lagoon

Abstract In recent years the transition of marine navigation to the digital era has been gaining momentum. Implementation of e-Navigation solutions varies from country to country in terms of their priorities, goals, levels and effects. Maritime authorities in Poland have been setting the pace in this transition process, not only in Poland but also in general as a global solution. The most recent example is the planned deployment of a variety of e-Navigation tools in the Vistula Lagoon: from GNSS-RTK Ground-Based Augmentation System, to virtual and synthetic aids to navigation, high-resolution bathymetry and advanced navigational software for piloting. The major objectives of this paper are, first, to summarise recent dynamics in the e-Navigation field, and second, to present a practical implementation of the e-Navigation concept in the Vistula Lagoon area.

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