Interlacing method for micro-patterning silver via inkjet printing

Guijun Li, Robert C. Roberts, Norman C. Tien

Research output: Journal article publicationConference articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

Inkjet-printed metal nanoparticles have been intensively studied for microelectronic applications including both physical and chemical sensors, and micro-electro-mechanical systems (MEMS). However, printed feature broadening is frequently observed due to the coalescence of un-dried ink, reducing achievable resolution. Increasing substrate temperature and reducing print rates are two common mitigation techniques, each with drawbacks. Here a novel interlacing method is introduced as an alternative strategy to manage droplet coalescence. The desired geometry is sampled into multiple sub-patterns and then printed sequentially, to yield the complete pattern. The interlacing sub-sampling matrix is selected according to the desired resolution and printing parameters to isolate each un-dried ink droplet during deposition. Printed geometries are found to retain single droplet resolution using this method. A comparison is made between samples with direct (single-pass) printing and interlaced printing. High-resolution silver planar resistors are constructed and characterized for their application as printed temperature sensors.

Original languageEnglish
Article number6985346
Pages (from-to)1687-1690
Number of pages4
JournalProceedings of IEEE Sensors
Volume2014-December
Issue numberDecember
DOIs
Publication statusPublished - 12 Dec 2014
Externally publishedYes
Event13th IEEE SENSORS Conference, SENSORS 2014 - Valencia, Spain
Duration: 2 Nov 20145 Nov 2014

Keywords

  • Additive microfabrication
  • Inkjet printing
  • Interlacing
  • Silver nanoparticle ink

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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