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Characterization of the thermal conductivity of La0.95Sr0.05CoO3 thermoelectric oxide nanofibers

Journal Article · · Nano Research
 [1];  [2];  [2];  [3];  [3]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States); Stevens Institute of Technology, Hoboken, NJ (United States)
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  3. Stevens Institute of Technology, Hoboken, NJ (United States)
Thermoelectric oxide nanofibers prepared by electrospinning are expected to have reduced thermal conductivity when compared to bulk samples. Measurements of nanofibers’ thermal conductivity is challenging since it involves sophisticated sample preparation methods. In this work, we present a novel method suitable for measurements of thermal conductivity of a single nanofiber. A microelectro-mechanical (MEMS) device has been designed and fabricated to perform thermal conductivity measurements on a single nanofiber. A special Si template was designed to collect and transfer individual nanofibers onto a MEMS device. Pt was deposited by a focused ion beam to reduce the effective length of a prepared nanofiber. La0.95Sr0.05CoO3 nanofibers with diameters of 140 nm and 290 nm were studied and characterized using this approach at room temperature. Measured thermal conductivities yielded values of 0.7 W·m-1·K-1 and 2.1 W·m-1·K-1, respectively. Our measurements in La0.95Sr0.05CoO3 nanofibers confirmed that a decrease of linear dimensions has a profound effect on its thermal conductivity.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-98CH10886; SC0012704
OSTI ID:
2560716
Alternate ID(s):
OSTI ID: 1228956
OSTI ID: 1165680
Report Number(s):
BNL--228022-2025-JAAM
Journal Information:
Nano Research, Journal Name: Nano Research Journal Issue: 8 Vol. 7; ISSN 1998-0124
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (45)

Enhancement of Thermoelectric Figure-of-Merit by a Bulk Nanostructuring Approach journal February 2010
New Directions for Low-Dimensional Thermoelectric Materials journal April 2007
Nanostructured Thermoelectrics: Big Efficiency Gains from Small Features journal July 2010
Heat capacity and thermodynamic properties of LaFeO3and LaCoO3fromT=13 K toT=1000 K journal March 1998
Thermoelectric Bi2Te3 nanotubes synthesized by low-temperature aqueous chemical method journal January 2008
A new type of low power thermoelectric micro-generator fabricated by nanowire array thermoelectric material journal April 2005
A low-cost MEMS tester for measuring single nanostructure's thermal conductivity journal March 2013
:Ge, a promising n-type thermoelectric oxide composite journal April 2008
Improved Thermoelectric Properties of La1−xSrxCoO3 Nanowires journal July 2010
Measurement of the Thermal Conductivity of Individual Carbon Nanotubes by the Four-Point Three-ω Method journal August 2006
Influence of Polymeric Residue on the Thermal Conductivity of Suspended Bilayer Graphene journal March 2011
Large Thermoelectric Figure-of-Merits from SiGe Nanowires by Simultaneously Measuring Electrical and Thermal Transport Properties journal May 2012
One-Dimensional Quantum Confinement Effect Modulated Thermoelectric Properties in InAs Nanowires journal February 2012
Single Nanowire Thermal Conductivity Measurements by Raman Thermography journal July 2010
Thin-film thermoelectric devices with high room-temperature figures of merit journal October 2001
Enhanced thermoelectric performance of rough silicon nanowires journal January 2008
Silicon nanowires as efficient thermoelectric materials journal January 2008
Broadband phonon mean free path contributions to thermal conductivity measured using frequency domain thermoreflectance journal March 2013
Giant thermoelectric Seebeck coefficient of a two-dimensional electron gas in SrTiO3 journal January 2007
Thermoelectric microdevice fabricated by a MEMS-like electrochemical process journal July 2003
Phonon scattering in silicon films with thickness of order 100 nm journal May 1999
Thermal conductivity of individual silicon nanowires journal October 2003
La0.95Sr0.05CoO3: An efficient room-temperature thermoelectric oxide journal February 2004
Thermal conductivities of individual tin dioxide nanobelts journal April 2004
Thermal properties of electrodeposited bismuth telluride nanowires embedded in amorphous alumina journal December 2004
Thermoelectric properties of individual electrodeposited bismuth telluride nanowires journal September 2005
Thermal conductivity of GaAs nanowires studied by micro-Raman spectroscopy combined with laser heating journal December 2010
Thermal conductivity of nano-grained SrTiO3 thin films journal December 2012
Thermal conductivity measurement of individual Bi 2 Se 3 nano-ribbon by self-heating three-ω method journal January 2013
The Promise of Low-Dimensional Thermoelectric Materials journal May 1999
The fabrication of thermoelectric La0.95Sr0.05CoO3nanofibers and Seebeck coefficient measurement journal September 2010
Thermoelectric figure of merit of a one-dimensional conductor journal June 1993
Linear specific heat of carbon nanotubes journal April 1999
Size effects on thermoelectricity in a strongly correlated oxide journal February 2012
Fabrication and measured performance of a first-generation microthermoelectric cooler journal October 2005
Heat Transfer in Nanostructures for Solid-State Energy Conversion journal November 2001
Measuring Thermal and Thermoelectric Properties of One-Dimensional Nanostructures Using a Microfabricated Device journal September 2003
Quantum Dot Superlattice Thermoelectric Materials and Devices journal September 2002
High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys journal May 2008
Interfacial Thermal Resistance and Thermal Conductivity in Nanograined SrTiO 3 journal February 2010
Observation of Distinct Metallic Conductivity in NaCo2O4 journal April 1994
Spectral Phonon Transport Properties of Silicon Based on Molecular Dynamics Simulations and Lattice Dynamics journal February 2008
Thermoelectric properties of Ca0.8Dy0.2MnO3 synthesized by solution combustion process journal October 2011
Thermoelectrics Handbook: Macro to Nano book January 2017
CRC Handbook of Thermoelectrics book January 2017

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