Fabrication of acoustic ejectors with replaceable acoustic lens by using soft-lithography

You Lin Tu, Jin An Wu, Shih Jui Chen, Barthélemy Cagneau, Luc Chassagne

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


This paper presents a novel design of an acoustic-wave liquid ejector by using PDMS soft-lithography. Both annular patterned lens membrane and piezoelectric transducer are designed to be replaceable to avoid ink clogging on the ejector surface. With the integration of an external siphoning system, the ejector is capable of jetting downward rather than only upward and refilling ink automatically without external force, which makes it suitable for 3D printing applications. By applying the electric signal at 2.4 MHz, the ejector can eject water downward with a speed of 0.29 m/s and droplet dimension of 720 μΜ.

Original languageEnglish
Title of host publicationIEEE Sensors, SENSORS 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982875
StatePublished - 5 Jan 2016
Event15th IEEE Sensors Conference, SENSORS 2016 - Orlando, United States
Duration: 30 Oct 20162 Nov 2016

Publication series

NameProceedings of IEEE Sensors
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229


Conference15th IEEE Sensors Conference, SENSORS 2016
Country/TerritoryUnited States


  • Acoustic ejector
  • Soft-lithography


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