Absorption length for photon propagation in highly dense colloidal dispersions

Rajeev Garg; Robert Krafft Prud'homme; Ilhan A. Aksay; Feng Liu; Robert R. Alfano

doi:10.1557/JMR.1998.0472

Absorption length for photon propagation in highly dense colloidal dispersions

Rajeev Garg, Robert Krafft Prud'homme, Ilhan A. Aksay, Feng Liu, Robert R. Alfano

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

16 Scopus citations

Abstract

The absorption length for photon propagation in highly concentrated colloidal dispersions calculated from temporal intensity profiles of 100 femto-second pulses is much longer than the absorption length obtained from the measurements of static light transmission in the pure continuous phase fluid. The difference between these two values is explained on the basis of small interparticle spacing at high particle concentration and hence shorter paths traveled by photons through the absorbing medium relative to the total diffusive path in the dispersion. The two values are in good agreement when the absorption length is rescaled with the interparticle separation.

Original language	English (US)
Pages (from-to)	3463-3467
Number of pages	5
Journal	Journal of Materials Research
Volume	13
Issue number	12
DOIs	https://doi.org/10.1557/JMR.1998.0472
State	Published - Dec 1998

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/JMR.1998.0472

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title = "Absorption length for photon propagation in highly dense colloidal dispersions",

abstract = "The absorption length for photon propagation in highly concentrated colloidal dispersions calculated from temporal intensity profiles of 100 femto-second pulses is much longer than the absorption length obtained from the measurements of static light transmission in the pure continuous phase fluid. The difference between these two values is explained on the basis of small interparticle spacing at high particle concentration and hence shorter paths traveled by photons through the absorbing medium relative to the total diffusive path in the dispersion. The two values are in good agreement when the absorption length is rescaled with the interparticle separation.",

author = "Rajeev Garg and Prud'homme, {Robert Krafft} and Aksay, {Ilhan A.} and Feng Liu and Alfano, {Robert R.}",

note = "Funding Information: This work was funded by the Army Research Office under a MURI Grant No. DAAH04-95-1-0102. Partial support for the work at CCNY was obtained from the New York State Science and Technology Foundation and NASA-IRA.",

year = "1998",

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doi = "10.1557/JMR.1998.0472",

language = "English (US)",

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T1 - Absorption length for photon propagation in highly dense colloidal dispersions

AU - Garg, Rajeev

AU - Prud'homme, Robert Krafft

AU - Aksay, Ilhan A.

AU - Liu, Feng

AU - Alfano, Robert R.

N1 - Funding Information: This work was funded by the Army Research Office under a MURI Grant No. DAAH04-95-1-0102. Partial support for the work at CCNY was obtained from the New York State Science and Technology Foundation and NASA-IRA.

PY - 1998/12

Y1 - 1998/12

N2 - The absorption length for photon propagation in highly concentrated colloidal dispersions calculated from temporal intensity profiles of 100 femto-second pulses is much longer than the absorption length obtained from the measurements of static light transmission in the pure continuous phase fluid. The difference between these two values is explained on the basis of small interparticle spacing at high particle concentration and hence shorter paths traveled by photons through the absorbing medium relative to the total diffusive path in the dispersion. The two values are in good agreement when the absorption length is rescaled with the interparticle separation.

AB - The absorption length for photon propagation in highly concentrated colloidal dispersions calculated from temporal intensity profiles of 100 femto-second pulses is much longer than the absorption length obtained from the measurements of static light transmission in the pure continuous phase fluid. The difference between these two values is explained on the basis of small interparticle spacing at high particle concentration and hence shorter paths traveled by photons through the absorbing medium relative to the total diffusive path in the dispersion. The two values are in good agreement when the absorption length is rescaled with the interparticle separation.

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Absorption length for photon propagation in highly dense colloidal dispersions

Abstract

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