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Brian F. Donovan
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Journal Articles

Propagon boundary scattering relaxed via crystalline host on multiphase germanium telluride

Brian F. Donovan, Ronald J. Warzoha, Taylor L. Gray, Elizabeth Getto, Asher Leff, Adam A. Wilson, Laura B. Ruppalt, James G. Champlain
Journal: Applied Physics Letters
Appl. Phys. Lett. 124, 172202 (2024)
https://doi.org/10.1063/5.0195971
Published: April 2024
View article titled, Propagon boundary scattering relaxed via crystalline host on multiphase germanium telluride
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Includes: Supplementary data
Journal Articles

Unwrapping a full temporal cycle in time domain thermoreflectance for enhanced measurement sensitivity in thermally insulating materials

Brian F. Donovan, Taylor L. Gray, Adam A. Wilson, Ronald J. Warzoha
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 084904 (2022)
https://doi.org/10.1063/5.0089075
Published: August 2022
View article titled, Unwrapping a full temporal cycle in time domain thermoreflectance for enhanced measurement sensitivity in thermally insulating materials
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Journal Articles

A numerical fitting routine for frequency-domain thermoreflectance measurements of nanoscale material systems having arbitrary geometries

Editor’s Pick
Ronald J. Warzoha, Adam A. Wilson, Brian F. Donovan, Andrew N. Smith, Nicholas Vu, Trent Perry, Longnan Li, Nenad Miljkovic, Elizabeth Getto
Journal: Journal of Applied Physics
J. Appl. Phys. 129, 035103 (2021)
https://doi.org/10.1063/5.0030168
Published: January 2021
View article titled, A numerical fitting routine for frequency-domain thermoreflectance measurements of nanoscale material systems having arbitrary geometries
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Includes: Supplementary data
Journal Articles

Understanding the sensitivity of the two-temperature model for electron–phonon coupling measurements

Sarah B. Naldo, Andrius V. Bernotas, Brian F. Donovan
Journal: Journal of Applied Physics
J. Appl. Phys. 128, 085102 (2020)
https://doi.org/10.1063/5.0019719
Published: August 2020
View article titled, Understanding the sensitivity of the two-temperature model for electron–phonon coupling measurements
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Journal Articles

Nanoscale thermal transport in amorphous and crystalline GeTe thin-films

Scilight
Ronald J. Warzoha, Brian F. Donovan, Nicholas T. Vu, James G. Champlain, Shawn Mack, Laura B. Ruppalt
Journal: Applied Physics Letters
Appl. Phys. Lett. 115, 023104 (2019)
https://doi.org/10.1063/1.5098334
Published: July 2019
View article titled, Nanoscale thermal transport in amorphous and crystalline GeTe thin-films
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Includes: Supplementary data
Journal Articles

Solid-state thermal energy storage using reversible martensitic transformations

Darin J. Sharar, Brian F. Donovan, Ronald J. Warzoha, Adam A. Wilson, Asher C. Leff, Brendan M. Hanrahan
Journal: Applied Physics Letters
Appl. Phys. Lett. 114, 143902 (2019)
https://doi.org/10.1063/1.5087135
Published: April 2019
View article titled, Solid-state thermal energy storage using reversible martensitic transformations
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Includes: Supplementary data
Journal Articles

Elastic mismatch induced reduction of the thermal conductivity of silicon with aluminum nano-inclusions

Brian F. Donovan, Wade A. Jensen, Long Chen, Ashutosh Giri, S. Joseph Poon, Jerrold A. Floro, Patrick E. Hopkins
Journal: Applied Physics Letters
Appl. Phys. Lett. 112, 213103 (2018)
https://doi.org/10.1063/1.5019269
Published: May 2018
View article titled, Elastic mismatch induced reduction of the thermal conductivity of silicon with aluminum nano-inclusions
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Includes: Supplementary data
Journal Articles

Ballistic transport of long wavelength phonons and thermal conductivity accumulation in nanograined silicon-germanium alloys

Long Chen, Jeffrey L. Braun, Brian F. Donovan, Patrick E. Hopkins, S. Joseph Poon
Journal: Applied Physics Letters
Appl. Phys. Lett. 111, 131902 (2017)
https://doi.org/10.1063/1.4986884
Published: September 2017
View article titled, Ballistic transport of long wavelength phonons and thermal conductivity accumulation in nanograined silicon-germanium alloys
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Includes: Supplementary data
Journal Articles

High resolution steady-state measurements of thermal contact resistance across thermal interface material junctions

Ronald J. Warzoha, Brian F. Donovan
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 88, 094901 (2017)
https://doi.org/10.1063/1.5001835
Published: September 2017
View article titled, High resolution steady-state measurements of thermal contact resistance across thermal interface material junctions
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Journal Articles

Localized thin film damage sourced and monitored via pump-probe modulated thermoreflectance

Brian F. Donovan, John A. Tomko, Ashutosh Giri, David H. Olson, Jeffrey L. Braun, John T. Gaskins, Patrick E. Hopkins
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 88, 054903 (2017)
https://doi.org/10.1063/1.4983205
Published: May 2017
View article titled, Localized thin film damage sourced and monitored via pump-probe modulated thermoreflectance
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Journal Articles

Interplay between mass-impurity and vacancy phonon scattering effects on the thermal conductivity of doped cadmium oxide

Brian F. Donovan, Edward Sachet, Jon-Paul Maria, Patrick E. Hopkins
Journal: Applied Physics Letters
Appl. Phys. Lett. 108, 021901 (2016)
https://doi.org/10.1063/1.4939652
Published: January 2016
View article titled, Interplay between mass-impurity and vacancy phonon scattering effects on the thermal conductivity of doped cadmium oxide
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Journal Articles

Mechanisms of nonequilibrium electron-phonon coupling and thermal conductance at interfaces

Ashutosh Giri, John T. Gaskins, Brian F. Donovan, Chester Szwejkowski, Ronald J. Warzoha, Mark A. Rodriguez, Jon Ihlefeld, Patrick E. Hopkins
Journal: Journal of Applied Physics
J. Appl. Phys. 117, 105105 (2015)
https://doi.org/10.1063/1.4914867
Published: March 2015
View article titled, Mechanisms of nonequilibrium electron-phonon coupling and thermal conductance at interfaces
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Journal Articles

Size effects in the thermal conductivity of gallium oxide (β-Ga2O3) films grown via open-atmosphere annealing of gallium nitride

Chester J. Szwejkowski, Nicole C. Creange, Kai Sun, Ashutosh Giri, Brian F. Donovan, Costel Constantin, Patrick E. Hopkins
Journal: Journal of Applied Physics
J. Appl. Phys. 117, 084308 (2015)
https://doi.org/10.1063/1.4913601
Published: February 2015
View article titled, Size effects in the thermal conductivity of gallium oxide (<em>β</em>-Ga<sub>2</sub>O<sub>3</sub>) films grown via open-atmosphere annealing of gallium nitride
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Journal Articles

Thermal boundary conductance across metal-gallium nitride interfaces from 80 to 450 K

Brian F. Donovan, Chester J. Szwejkowski, John C. Duda, Ramez Cheaito, John T. Gaskins, C.-Y. Peter Yang, Costel Constantin, Reese E. Jones, Patrick E. Hopkins
Journal: Applied Physics Letters
Appl. Phys. Lett. 105, 203502 (2014)
https://doi.org/10.1063/1.4902233
Published: November 2014
View article titled, Thermal boundary conductance across metal-gallium nitride interfaces from 80 to 450 K
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Journal Articles

Spectral phonon scattering effects on the thermal conductivity of nano-grained barium titanate

Brian F. Donovan, Brian M. Foley, Jon F. Ihlefeld, Jon-Paul Maria, Patrick E. Hopkins
Journal: Applied Physics Letters
Appl. Phys. Lett. 105, 082907 (2014)
https://doi.org/10.1063/1.4893920
Published: August 2014
View article titled, Spectral phonon scattering effects on the thermal conductivity of nano-grained barium titanate
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Includes: Supplementary data