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Title: Nanomesh phononic structures for low thermal conductivity and thermoelectric energy conversion materials

Abstract

A nanomesh phononic structure includes: a sheet including a first material, the sheet having a plurality of phononic-sized features spaced apart at a phononic pitch, the phononic pitch being smaller than or equal to twice a maximum phonon mean free path of the first material and the phononic size being smaller than or equal to the maximum phonon mean free path of the first material.

Inventors:
; ;
Publication Date:
Research Org.:
CALIFORNIA INSTITUTE OF TECHNOLOGY, Pasadena, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1295611
Patent Number(s):
9,419,198
Application Number:
13/278,074
Assignee:
CALIFORNIA INSTITUTE OF TECHNOLOGY (Pasadena, CA) CHO
DOE Contract Number:
FG02-04ER46175
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Oct 20
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION

Citation Formats

Yu, Jen-Kan, Mitrovic, Slobodan, and Heath, James R. Nanomesh phononic structures for low thermal conductivity and thermoelectric energy conversion materials. United States: N. p., 2016. Web.
Yu, Jen-Kan, Mitrovic, Slobodan, & Heath, James R. Nanomesh phononic structures for low thermal conductivity and thermoelectric energy conversion materials. United States.
Yu, Jen-Kan, Mitrovic, Slobodan, and Heath, James R. 2016. "Nanomesh phononic structures for low thermal conductivity and thermoelectric energy conversion materials". United States. doi:. https://www.osti.gov/servlets/purl/1295611.
@article{osti_1295611,
title = {Nanomesh phononic structures for low thermal conductivity and thermoelectric energy conversion materials},
author = {Yu, Jen-Kan and Mitrovic, Slobodan and Heath, James R.},
abstractNote = {A nanomesh phononic structure includes: a sheet including a first material, the sheet having a plurality of phononic-sized features spaced apart at a phononic pitch, the phononic pitch being smaller than or equal to twice a maximum phonon mean free path of the first material and the phononic size being smaller than or equal to the maximum phonon mean free path of the first material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 8
}

Patent:

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  • Synthetic thermoelectric materials comprising phononic crystals can simultaneously have a large Seebeck coefficient, high electrical conductivity, and low thermal conductivity. Such synthetic thermoelectric materials can enable improved thermoelectric devices, such as thermoelectric generators and coolers, with improved performance. Such synthetic thermoelectric materials and devices can be fabricated using techniques that are compatible with standard microelectronics.
  • Abstract not provided.
  • State-of-the-art methodologies for the conversion of solar thermal power to electricity are based on conventional electromagnetic induction techniques. If appropriate ZT = 4 thermoelectric materials were available, it is likely that conversion efficiencies of 30-40% could be achieved. The availability of all solid state electricity generation would be a long awaited development in part because of the elimination of moving parts. This paper presents a preliminary examination of the potential performance of ZT = 4 power generators in comparison with Stirling engines taking into account specific mass, volume and cost as well as system reliability. High-performance thermoelectrics appear to havemore » distinct advantages over magnetic induction technologies.« less
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