The role of electric field in microfluidic heating induced by standing surface acoustic waves

Tengfei Zheng; Chaohui Wang; Qiao Hu; Shoupeng Wei

doi:10.1063/1.5030052

The role of electric field in microfluidic heating induced by standing surface acoustic waves

Tengfei Zheng
, Chaohui Wang
, Qiao Hu
, Shoupeng Wei

School of Mechanical Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

The heating mechanism of standing surface acoustic waves (SSAWs) on a LiNbO₃ substrate has been experimentally studied. Three devices with different substrates were used to heat the drops with NaCl concentrations ranging from 0 to 1 g/l, respectively. The device with a glass substrate was used to shield acoustic waves. The device with an Au layer between the LiNbO₃ substrate and the droplet was used to shield the alternating current field. The results show that the thermal effect induced by SSAWs on the LiNbO₃ substrate is composed of the acoustothermal effect due to SSAWs and the electric field thermal effect (Joule heat) due to the alternating current field. The electric field thermal effect which is ignored in SSAW devices previously plays an important role in the thermal effect induced by SSAWs. These results provide a meaningful insight into the mechanism of SSAW-based heating, which is of great help to guide the effective use of the SSAW-based heating technique for various applications.

Original language	English
Article number	233702
Journal	Applied Physics Letters
Volume	112
Issue number	23
DOIs	https://doi.org/10.1063/1.5030052
State	Published - 4 Jun 2018

Access to Document

10.1063/1.5030052

Cite this

@article{5c7d9581ad304e238e1b5620fad894bb,

title = "The role of electric field in microfluidic heating induced by standing surface acoustic waves",

abstract = "The heating mechanism of standing surface acoustic waves (SSAWs) on a LiNbO3 substrate has been experimentally studied. Three devices with different substrates were used to heat the drops with NaCl concentrations ranging from 0 to 1 g/l, respectively. The device with a glass substrate was used to shield acoustic waves. The device with an Au layer between the LiNbO3 substrate and the droplet was used to shield the alternating current field. The results show that the thermal effect induced by SSAWs on the LiNbO3 substrate is composed of the acoustothermal effect due to SSAWs and the electric field thermal effect (Joule heat) due to the alternating current field. The electric field thermal effect which is ignored in SSAW devices previously plays an important role in the thermal effect induced by SSAWs. These results provide a meaningful insight into the mechanism of SSAW-based heating, which is of great help to guide the effective use of the SSAW-based heating technique for various applications.",

author = "Tengfei Zheng and Chaohui Wang and Qiao Hu and Shoupeng Wei",

note = "Publisher Copyright: {\textcopyright} 2018 Author(s).",

year = "2018",

month = jun,

day = "4",

doi = "10.1063/1.5030052",

language = "英语",

volume = "112",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "23",

}

TY - JOUR

T1 - The role of electric field in microfluidic heating induced by standing surface acoustic waves

AU - Zheng, Tengfei

AU - Wang, Chaohui

AU - Hu, Qiao

AU - Wei, Shoupeng

PY - 2018/6/4

Y1 - 2018/6/4

N2 - The heating mechanism of standing surface acoustic waves (SSAWs) on a LiNbO3 substrate has been experimentally studied. Three devices with different substrates were used to heat the drops with NaCl concentrations ranging from 0 to 1 g/l, respectively. The device with a glass substrate was used to shield acoustic waves. The device with an Au layer between the LiNbO3 substrate and the droplet was used to shield the alternating current field. The results show that the thermal effect induced by SSAWs on the LiNbO3 substrate is composed of the acoustothermal effect due to SSAWs and the electric field thermal effect (Joule heat) due to the alternating current field. The electric field thermal effect which is ignored in SSAW devices previously plays an important role in the thermal effect induced by SSAWs. These results provide a meaningful insight into the mechanism of SSAW-based heating, which is of great help to guide the effective use of the SSAW-based heating technique for various applications.

AB - The heating mechanism of standing surface acoustic waves (SSAWs) on a LiNbO3 substrate has been experimentally studied. Three devices with different substrates were used to heat the drops with NaCl concentrations ranging from 0 to 1 g/l, respectively. The device with a glass substrate was used to shield acoustic waves. The device with an Au layer between the LiNbO3 substrate and the droplet was used to shield the alternating current field. The results show that the thermal effect induced by SSAWs on the LiNbO3 substrate is composed of the acoustothermal effect due to SSAWs and the electric field thermal effect (Joule heat) due to the alternating current field. The electric field thermal effect which is ignored in SSAW devices previously plays an important role in the thermal effect induced by SSAWs. These results provide a meaningful insight into the mechanism of SSAW-based heating, which is of great help to guide the effective use of the SSAW-based heating technique for various applications.

UR - https://www.scopus.com/pages/publications/85048188051

U2 - 10.1063/1.5030052

DO - 10.1063/1.5030052

M3 - 文章

AN - SCOPUS:85048188051

SN - 0003-6951

VL - 112

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

M1 - 233702

ER -

The role of electric field in microfluidic heating induced by standing surface acoustic waves

Abstract

Access to Document

Other files and links

Fingerprint

Cite this