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Updated: Feb 13, 2026
08:38
Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films
Published on: August 19, 2016
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Obtaining Thickness-Limited Electrospray Deposition for 3D Coating
Lin Lei, Dylan A Kovacevich, Michael P Nitzsche
1Department of Chemistry , Lehman College-CUNY , Davis Hall, 250 Bedford Park Boulevard West , Bronx , New York 10468 , United States.
ACS Applied Materials & Interfaces
|March 16, 2018
Summary
Electrospray deposition creates uniform microscale coatings by controlling charge accumulation. Key parameters like field strength and temperature enable self-limited sprays for complex surfaces.
Area of Science:
- Materials Science
- Chemical Engineering
- Surface Science
Background:
- Electrospray deposition (ESD) uses charged microdroplets for material transfer.
- Previous ESD research categorized results into continuous film deposition or isolated droplet spraying.
- A self-limited spray regime, observed in specific material-substrate combinations, restricts film thickness due to charge repulsion.
Purpose of the Study:
- To categorize existing electrospray deposition results.
- To identify critical parameters for achieving thickness-limited sprays.
- To explore the application of these parameters for microscale coating of complex objects.
Main Methods:
- Parametric study of glassy polymers using electrospray processing.
- Investigation of electrostatic forces and surface tension in charged sprays.
- Analysis of droplet behavior and material accumulation on target substrates.
Main Results:
- Identified field strength and spray temperature as key parameters for limiting spray thickness.
- Demonstrated that charge accumulation can create a repulsive field, halting deposition.
- Linked temperature to material swelling and charge redistribution, influencing limiting thickness.
Conclusions:
- Established critical parameters for controlling electrospray deposition thickness.
- Showcased the potential for uniform or varied microscale coatings on complex 3D objects.
- Advanced understanding of self-limited spray phenomena in electrospray processing.
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