Acoustic mixing in a dome-shaped chamber-based SAW (DC-SAW) device

Hyunjung Lim, Seung Min Back, Hyuk Choi, Jeonghun Nam

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


The use of an open droplet system for surface acoustic wave (SAW)-based applications has been limited by droplet instability at high input power. This study introduces a dome-shaped chamber-based SAW (DC-SAW) device for the first time, which can be fabricated simply using a single adhesive tape and a drop of ultraviolet-curable material without soft lithography processes. The dome-shaped chamber device with a contact angle of 68° enables the maximizing of the effect of SAW transmitted at a refraction angle of roughly 22°, negating the droplet instability. The DC-SAW device was applied to acoustic mixing to estimate its capability. Acoustic mixing of two different fluids (i.e., deionized water and fluorescent particle suspension) was demonstrated in the dome-shaped chamber device. Moreover, the effect of flow rate and applied voltage on mixing performance was estimated. With the decreasing flow rate and increasing applied voltage, mixing performance was enhanced. At an applied voltage of 20 V, mixing indices were higher than 0.9 at a total flow rate of 300 μl min-1

Original languageEnglish
Pages (from-to)120-125
Number of pages6
JournalLab on a Chip
Issue number1
Publication statusPublished - 2020 Jan 7

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1A09000962) and by a grant of the Establish R&D Platform Project through the Korea University Medical Center and Korea University Guro Hospital, funded by the Korea University Guro Hospital (O1903851).

Publisher Copyright:
This journal is © The Royal Society of Chemistry.

ASJC Scopus subject areas

  • Bioengineering
  • Biochemistry
  • General Chemistry
  • Biomedical Engineering


Dive into the research topics of 'Acoustic mixing in a dome-shaped chamber-based SAW (DC-SAW) device'. Together they form a unique fingerprint.

Cite this