skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Quasiballistic heat transfer studied using the frequency-dependent Boltzmann transport equation

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [3];  [3]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia)

Quasiballistic heat transfer occurs when there is a temperature gradient over length scales comparable to phonon mean free paths (MFPs). This regime has been of interest recently because observation of quasiballistic transport can lead to useful information about phonon MFPs, knowledge of which is essential for engineering nanoscale thermal effects. Here, we use the Boltzmann transport equation (BTE) to understand how observations of quasiballistic transport can yield information about MFPs. We solve the transient, one-dimensional, frequency-dependent BTE for a double-layer structure of a metal film on a substrate, the same geometry that is used in transient thermoreflectance experiments, using a frequency-dependent interface condition. Finally, our results indicate that phonons with MFPs longer than the thermal penetration depth do not contribute to the measured thermal conductivity, providing a means to probe the MFP distribution. We discuss discrepancies between our simulation and experimental observations which offer opportunities for future investigation.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001299; FG02-09ER46577
OSTI ID:
1386855
Alternate ID(s):
OSTI ID: 1098414
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 84, Issue 23; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 105 works
Citation information provided by
Web of Science

References (30)

Quasi-ballistic thermal transport from nanoscale interfaces observed using ultrafast coherent soft X-ray beams journal November 2009
Analysis of Lattice Thermal Conductivity journal December 1963
Frequency-dependent Monte Carlo simulations of phonon transport in two-dimensional porous silicon with aligned pores journal December 2009
Thermal Conductivity Spectroscopy Technique to Measure Phonon Mean Free Paths journal August 2011
On Variance-Reduced Simulations of the Boltzmann Transport Equation for Small-Scale Heat Transfer Applications journal August 2010
Intrinsic phonon relaxation times from first-principles studies of the thermal conductivities of Si and Ge journal February 2010
Heat Pulses in Quartz and Sapphire at Low Temperatures journal June 1964
Thermal conduction in sub-100nm transistors journal November 2006
Nonlocal and Nonequilibrium Heat Conduction in the Vicinity of Nanoparticles journal August 1996
Nonlocal theory of thermal conductivity journal July 1988
Submicron Heat Transport Model in Silicon Accounting for Phonon Dispersion and Polarization journal December 2004
Ballistic-phonon heat conduction at the nanoscale as revealed by time-resolved x-ray diffraction and time-domain thermoreflectance journal August 2007
Pulse accumulation, radial heat conduction, and anisotropic thermal conductivity in pump-probe transient thermoreflectance journal November 2008
Thermal conductivity and ballistic-phonon transport in the cross-plane direction of superlattices journal June 1998
Thermal boundary resistance journal July 1989
Thermal boundary resistance predictions from molecular dynamics simulations and theoretical calculations journal October 2009
Note on the conduction of heat in crystals journal June 1938
Role of electron–phonon coupling in thermal conductance of metal–nonmetal interfaces journal June 2004
Transient ballistic and diffusive phonon heat transport in thin films journal July 1993
Anharmonic Decay of Optical Phonons journal August 1966
Comparison of atomic-level simulation methods for computing thermal conductivity journal April 2002
Partial Coherence Theory of Thin Film Radiative Properties journal August 1992
Frequency dependence of the thermal conductivity of semiconductor alloys journal August 2007
Thermal Conductance of Thin Silicon Nanowires journal September 2008
Microscale Heat Conduction in Dielectric Thin Films journal February 1993
Nanoscale thermal transport journal January 2003
Spectral Phonon Transport Properties of Silicon Based on Molecular Dynamics Simulations and Lattice Dynamics journal February 2008
Quasi-ballistic thermal transport from nanoscale interfaces observed using ultrafast coherent soft x-ray beams conference February 2011
Thermal Boundary Resistance. journal August 1971
Thermal Boundary Resistance journal June 1971

Cited By (15)

Unsteady ballistic heat transport in harmonic crystals with polyatomic unit cell journal June 2019
A review of computational phononics: the bulk, interfaces, and surfaces journal October 2017
Nanoscale heat transfer – from computation to experiment journal January 2013
Nanostructured p-type Cr/V 2 O 5 thin films with boosted thermoelectric properties journal January 2014
Nanoscale thermal transport. II. 2003–2012 journal March 2014
Radial quasiballistic transport in time-domain thermoreflectance studied using Monte Carlo simulations journal April 2014
Disparate quasiballistic heat conduction regimes from periodic heat sources on a substrate journal August 2014
Thermal investigation of nanostructured bulk thermoelectric materials with hierarchical structures: An effective medium approach journal January 2018
Tutorial: Time-domain thermoreflectance (TDTR) for thermal property characterization of bulk and thin film materials journal October 2018
Collocation mesh-free method to solve the gray phonon Boltzmann transport equation journal September 2016
Advances in Studying Phonon Mean Free Path Dependent Contributions to Thermal Conductivity journal May 2015
Advances in the measurement and computation of thermal phonon transport properties journal January 2015
Heat transport in two-dimensional materials by directly solving the phonon Boltzmann equation under Callaway's dual relaxation model journal October 2017
Coherent Phonon Heat Conduction in Superlattices journal November 2012
Extending the range of validity of Fourier's law into the kinetic transport regime via asymptotic solution of the phonon Boltzmann transport equation text January 2015

Figures / Tables (6)