Issue 2, 2001

Wavelet transform for Shah convolution velocity measurements of single particles and solutes in a microfluidic chip

Abstract

Wavelet transform analysis is applied to determine the speed of fluorescent polystyrene microspheres and fluorescent solutes in a microchip. The data analysed consist of the periodical signal (Shah convolution) obtained when fluorescent particles or solute plugs move in a channel that is covered with a chromium grid pattern. This setup converts velocity into a (fluorescence emission) frequency, and previous analyses therefore used Fourier transform to extract the frequency information. In this paper it is shown that wavelet transform has some advantages over Fourier transform. With wavelet transform, time information can be obtained in addition to frequency information. Thus the speed of individual particles was determined together with their moments of appearance and disappearance in the system. With solutes small changes of velocity during the analysis were detected, and an improvement in peak frequency resolution was obtained.

Article information

Article type
Paper
Submitted
27 abr 2001
Accepted
10 ago 2001
First published
11 set 2001

Lab Chip, 2001,1, 122-126

Wavelet transform for Shah convolution velocity measurements of single particles and solutes in a microfluidic chip

J. C. T. Eijkel, Y. C. Kwok and A. Manz, Lab Chip, 2001, 1, 122 DOI: 10.1039/B103822M

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements