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Effects of Driving Frequency and Voltage on the Performances of Vibrating Mesh Nebulizers

Authors
 Sang-Hyub Moon  ;  Kyung Hwa Chang  ;  Hyun Mok Park  ;  Bong Joo Park  ;  Sun Kook Yoo  ;  Ki Chang Nam 
Citation
 APPLIED SCIENCES-BASEL, Vol.11(3) : 1296, 2021-02 
Journal Title
APPLIED SCIENCES-BASEL
Issue Date
2021-02
Keywords
drug delivery ; nebulizer ; resonance frequency ; piezoelectric
Abstract
The functional components of vibrating mesh nebulizers are a piezoelectric ceramic with a mesh mounted on one side, a reservoir, and a driving circuit. The piezoelectric material vibrates at a specific intrinsic frequency, and when the mechanical resonance frequency of the piezoelectric ceramic and the frequency of the applied electrical signal match, the vibration amplitude of the ceramic is greatest. In the present study, nebulizing performances were tested with respect to driving voltage amplitude after automatic resonance frequency tuning (ARFT) and/or impedance matching (IM) for salbutamol and glycerol solutions. A 1% mismatch of resonance frequency reduced the output rate by 11.0~30.1% and increased particle size by 1.6~7.7% and power consumption increased by 6.6~13.6%. Driving at 30 Vpp after ARFT and IM increased output rate by 45% and decreased power consumption by 31% compared with operation at nominal resonance frequency without IM at 50 Vpp. Nebulization of viscous solutions was also enhanced by applying ARFT with IM. The study shows the application of ARFT with IM improves vibrating mesh nebulizer performance and reduces power consumption.
Files in This Item:
T202104917.pdf Download
DOI
10.3390/app11031296
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Yoo, Sun Kook(유선국) ORCID logo https://orcid.org/0000-0002-6032-4686
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/186998
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