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Integrated design of micro force sensor oriented to cell micro-operation

Issue title: Papers from the 3rd International Conference on Biomedical Engineering and Technology (iCBEB 2014), 25–28 September 2014, Beijing, China

Subtitle:

Guest editors: Edward J. Ciaccio

Article type: Research Article

Authors: An, Zhen | Xiang, Chaoqun | Wang, Jinming | Dong, Liping | Hao, Lina*

Affiliations: College of Mechanical Engineering and Automation, Northeastern University, Shenyang, Liaoning, China

Correspondence: [*] Corresponding author: Lina Hao, College of Mechanical Engineering and Automation, 319#, Northeastern University, Shenyang, Liaoning, China. Tel.: +86 024 8368 3010; E-mail:[email protected]

Keywords: Cell micro-operation, micro force sensor, PVDF, charge amplifier

DOI: 10.3233/THC-150993

Journal: Technology and Health Care, vol. 23, no. s2, pp. S551-S558, 2015

Published: 2015
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Abstract

BACKGROUND: During the process of cell micro operation, the contact force between the entry needle and the cell membrane is usually a very small area to be tested.

OBJECTIVE: These two features have been utilized to design a high precision micro force sensor to provide a force feedback in the process of cell micro operation.

METHODS: However, PVDF (Polyvinylidene Fluoride) has continued to display both a wide range of frequency response and a highly sensitive transform between force and electricity. In this paper a charge signal is obtained. In order to transform the charge signal into a voltage signal, a signal processing circuit was designed. The data acquisition card PCI-6221 (National Instruments) was used. It was employed to collect the voltage signal.

RESULTS: The resultant micro force sensor was calibrated by using a rating test.

CONCLUSIONS: The experimental test results demonstrated that the sensitivity and linearity of the designed micro force sensor were higher than the sensitivity and linearity of a traditional piezoelectric sensor.

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