Simultaneous determination of diffusion and sublimation kinetics at
nanoscale: Pentaerythritol tetranitrate

Walid M. Hikal; Alan K. Burnham; Brandon Weeks

Simultaneous determination of diffusion and sublimation kinetics at nanoscale: Pentaerythritol tetranitrate

Walid M. Hikal, Alan K. Burnham, Brandon Weeks

Research output: Contribution to journal › Article

Abstract

Many theoretical studies have been proposed to understand the mechanism of pentaerythritol tetranitrate (PETN) coarsening. Up to date, no experimental observations of diffusion have been made. We present experimental evidence of diffusion of PETN at nanoscale, as observed by UV-absorbance spectroscopy. As a result of thermal gradient, non-isothermal heating of continuous PETN nanofilms results in an initial increased absorbance at ambient temperatures indicating thickness increase due to coarsening, followed by absorbance decease due to film sublimation at relatively higher temperatures. Diffusion kinetics of PETN is measured both isothermally and non-isothermally and the results are in very good agreement. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802890]

Original language	English
Journal	Applied Physics Letters
State	Published - Apr 2013

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@article{77137d86555e40f1a5e172fcfa0330a5,

title = "Simultaneous determination of diffusion and sublimation kinetics at nanoscale: Pentaerythritol tetranitrate",

abstract = "Many theoretical studies have been proposed to understand the mechanism of pentaerythritol tetranitrate (PETN) coarsening. Up to date, no experimental observations of diffusion have been made. We present experimental evidence of diffusion of PETN at nanoscale, as observed by UV-absorbance spectroscopy. As a result of thermal gradient, non-isothermal heating of continuous PETN nanofilms results in an initial increased absorbance at ambient temperatures indicating thickness increase due to coarsening, followed by absorbance decease due to film sublimation at relatively higher temperatures. Diffusion kinetics of PETN is measured both isothermally and non-isothermally and the results are in very good agreement. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802890]",

author = "Hikal, {Walid M.} and Burnham, {Alan K.} and Brandon Weeks",

year = "2013",

month = apr,

language = "English",

journal = "Applied Physics Letters",

issn = "0003-6951",

}

TY - JOUR

T1 - Simultaneous determination of diffusion and sublimation kinetics at nanoscale: Pentaerythritol tetranitrate

AU - Hikal, Walid M.

AU - Burnham, Alan K.

AU - Weeks, Brandon

PY - 2013/4

Y1 - 2013/4

N2 - Many theoretical studies have been proposed to understand the mechanism of pentaerythritol tetranitrate (PETN) coarsening. Up to date, no experimental observations of diffusion have been made. We present experimental evidence of diffusion of PETN at nanoscale, as observed by UV-absorbance spectroscopy. As a result of thermal gradient, non-isothermal heating of continuous PETN nanofilms results in an initial increased absorbance at ambient temperatures indicating thickness increase due to coarsening, followed by absorbance decease due to film sublimation at relatively higher temperatures. Diffusion kinetics of PETN is measured both isothermally and non-isothermally and the results are in very good agreement. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802890]

AB - Many theoretical studies have been proposed to understand the mechanism of pentaerythritol tetranitrate (PETN) coarsening. Up to date, no experimental observations of diffusion have been made. We present experimental evidence of diffusion of PETN at nanoscale, as observed by UV-absorbance spectroscopy. As a result of thermal gradient, non-isothermal heating of continuous PETN nanofilms results in an initial increased absorbance at ambient temperatures indicating thickness increase due to coarsening, followed by absorbance decease due to film sublimation at relatively higher temperatures. Diffusion kinetics of PETN is measured both isothermally and non-isothermally and the results are in very good agreement. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802890]

M3 - Article

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

ER -