U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

DYNAMIC MEASUREMENT OF NANOLITER PER MINUTE FLOW BY SCALED DOSAGE OF FLUORESCENT SOLUTIONS

Published

Author(s)

Gregory A. Cooksey, Paul Patrone, James R. Hands, Stephen E. Meek, Anthony J. Kearsley

Abstract

This work describes a new method for continuous measurement of flow in a microchannel from 1 nL/min to 1000 nL/min using an optofluidic device with waveguides that deliver and collect light from small regions of a microfluidic channel. By relating the fluorescence intensity of a photobleachable dye to the energy it receives, our device extrapolates the measurement of a calibrated flow meter to a regime where the latter has large or unknown uncertainties. Coupled to a new way to determine zero flow, we demonstrate a first-of-its kind ability to accurately measure 20 nL/min with uncertainties on the order of 5 %.
Proceedings Title
The Proceedings of the MicroTas 2018 Conference
Conference Dates
November 11-15, 2018
Conference Location
Kaohsiung, TW
Pub Type
Conferences

Download Paper

Local Download

Keywords

Flow Metrology, Optofluidics, Fluorescence, Zero Flow
Flow metrology and rheology

Citation

Cooksey, G. , Patrone, P. , Hands, J. , Meek, S. and Kearsley, A. (2020), DYNAMIC MEASUREMENT OF NANOLITER PER MINUTE FLOW BY SCALED DOSAGE OF FLUORESCENT SOLUTIONS, The Proceedings of the MicroTas 2018 Conference, Kaohsiung, TW, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=926590 (Accessed April 26, 2024)

Created October 3, 2020, Updated March 30, 2022