TITLE

Phase-resolved optical Doppler tomography for imaging flow dynamics in microfluidic channels

AUTHOR(S)
Lei Wang; Wei Xu; Mark Bachman; Li, G. P.; Zhongping Chen
PUB. DATE
September 2004
SOURCE
Applied Physics Letters;9/6/2004, Vol. 85 Issue 10, p1855
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Phase-resolved optical Doppler tomography (ODT), an imaging technique based on low coherence interferometry, is presented as a tool to perform high-resolution cross-sectional imaging of fluidic flow in microchannels with high velocity sensitivity. To demonstrate ODT as a tool, electro-osmotic flow (EOF) was investigated, observing cross-sectional images of bidirectional flow within a microfluidic channel and pulsating flow when driven by a pulsed electrical field. ODT demonstrates great promise as a tool for studying the effects of microchannel surface modifications on biological sample flow and optimizing microfluidic device design.
ACCESSION #
14399910

 

Related Articles

  • Optimizing spectral phase interferometry for direct electric-field reconstruction. Stibenz, Gero; Steinmeyer, Günter // Review of Scientific Instruments;Jul2006, Vol. 77 Issue 7, p073105 

    Spectral phase interferometry for direct electric-field reconstruction has become a standard technique for the measurement and characterization of extremely short laser pulses. Here we describe an improved setup that employs a planar geometry, uses an interferometrically stable pulse-splitting...

  • Temporal and phase measurements of ultraviolet femtosecond pulses at 200 nm by molecular alignment based frequency resolved optical gating. Hao Li; Jia Liu; Yahui Feng; Cheng Chen; Haifeng Pan; Jian Wu; Heping Zeng // Applied Physics Letters;7/4/2011, Vol. 99 Issue 1, p011108 

    We demonstrate that the temporal profile and phase of a weak ultraviolet femtosecond pulse around 200 nm can be measured by molecular alignment based cross-correlation frequency resolved optical gating technique. This technique employs the impulsive alignment of gaseous molecules as gate...

  • Single-shot, interferometric, high-resolution, terahertz field diagnostic. Kim, K. Y.; Yellampalle, B.; Rodriguez, G.; Averitt, R. D.; Taylor, A. J.; Glownia, J. H. // Applied Physics Letters;1/23/2006, Vol. 88 Issue 4, p041123 

    We present a single-shot, high-temporal-resolution terahertz diagnostic capable of measuring free-space far-infrared electromagnetic fields in time and space. We show that by using a chirped probe electro-optic sampling technique, in combination with a recently described interferometric...

  • Differential spectral interferometry may boost dynamic range of OCT. Jones-Bey, Hassaun A. // Laser Focus World;Jan2004, Vol. 40 Issue 1, p31 

    Attempts to combine optical computed tomography (OCT) with spectral inteferometry for a high-performance version of OCT. Operation of OCT in the time domain; Use of OCT as an alternative to medical biopsy procedures; Dynamic range of OCT.

  • High resolution kinetic energy by long time-delayed core-sampling photofragment translational spectroscopy. Li, Guosheng; Hwang, Hyun Jin; Jung, Hyun Chai // Review of Scientific Instruments;Feb2005, Vol. 76 Issue 2, p023105 

    A pulsed core-sampling photofragment translational spectroscopy (PTS) method with a long time-delay, which allows an extremely high kinetic energy resolution, is presented in this article. More commonly applying a short time delay between laser and pulsed acceleration electric field leads to a...

  • Periodic electric field poling of KTiOPO4 using chemical patterning. Risk, W. P.; Lau, S. D. // Applied Physics Letters;12/23/1996, Vol. 69 Issue 26, p3999 

    We report a technique for periodic poling of KTiOPO4 (KTP). In this approach, we exploit the observation that Rb-exchanged regions of KTP resist electric field poling under conditions that produce domain inversion in unexchanged KTP. Thus, a pattern of Rb-exchanged regions can be transformed...

  • Electroclinic effect in free-standing smectic elastomer films. Köhler, R.; Stannarius, R.; Tolksdorf, C.; Zentel, R. // Applied Physics A: Materials Science & Processing;2005, Vol. 80 Issue 2, p381 

    The coupling of the mesogenic tilt in smectic liquid crystals to external electric fields in the layer plane (electroclinic effect) provides an opportunity to control the smectic layer thickness with electric fields. In ordered ferroelectric smectic elastomers it is possible to achieve a...

  • Laser processed channels of easy vortex motion in YBa2Cu3O7-δ films. Jukna, A.; Barboy, I.; Jung, G.; Banerjee, S. S.; Myasoedov, Y.; Plausinaitiene, V.; Abrutis, A.; Li, X.; Wang, D.; Sobolewski, Roman // Applied Physics Letters;11/7/2005, Vol. 87 Issue 19, p192504 

    Vortex dynamics in laser-patterned channels for easy motion in YBa2Cu3O7-δ thin-film bridges has been investigated by electric transport and magneto-optical measurements. It has been found that the laser-writing technique, relying on selective deoxygenation of the illuminated areas of...

  • Self-consistent analysis of electric field-dependent intersubband transitions for a thin layer inserted quantum well. Chen, W. Q.; Andersson, T. G. // Journal of Applied Physics;5/1/1993, Vol. 73 Issue 9, p4484 

    Presents a self-consistent analysis of electric field-dependent intersubband transitions for a thin layer inserted quantum well. Theoretical formulations; Optimization of the field-dependent 1-2 intersubband transition via adjustments of the quantum well parameters; Conclusions.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics