Work

Modeling Passive Droplet Deflection in Nanoscale Electrohydrodynamic Printing

Year: 2026

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Electrohydrodynamic printing enables high-resolution fabrication via nanoscale charged droplets. However, droplet trajectories are sensitive to electric field distortions over nonuniform substrates like coplanar electrodes (CEs). We systematically investigated passive droplet deflection during nanoscale printing on CEs through simulations and experiments. The electrode gap length and nozzle position are identified as key governing factors. A quantitative model relating these parameters to the deposition offset enables trajectory prediction. By applying adaptive speed and dynamic voltage control, continuous conductive silver nanocrystal lines with a 61.1 nm width are fabricated. This work provides a framework for enhancing printing precision in microelectronics and digital manufacturing.

Source: ACS Applied Nano Materials

DOI: 10.1021/acsanm.5c05729

Authors: Zhixuan Zhao, Xujiang Chao, Tianshuo Zhao

Institutions: University of Hong Kong, Northwestern Polytechnical University

Language: English

Topic: Electrohydrodynamics and Fluid Dynamics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funders: China Association for Science and Technology, National Natural Science Foundation of China, University Grants Committee, National Outstanding Youth Foundation of China