Received: from mx02.ecn.purdue.edu (mx02.ecn.purdue.edu [128.46.177.8]) by mailbag.ecn.purdue.edu (8.14.4/8.14.4) with ESMTP id q34InQ5H008558 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 4 Apr 2012 14:49:27 -0400 (EDT) Received: from mailhub128.itcs.purdue.edu (mailhub128.itcs.purdue.edu [128.210.5.128]) by mx02.ecn.purdue.edu (8.14.4/8.14.4) with ESMTP id q34Iml4g020807 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 4 Apr 2012 14:48:47 -0400 Received: from WPPEXHUB03H.purdue.lcl (wppexhub03h.itap.purdue.edu [172.21.6.92]) by mailhub128.itcs.purdue.edu (8.14.4/8.14.4/mta-nopmx.smtp.purdue.edu) with ESMTP id q34Imk3D022993; Wed, 4 Apr 2012 14:48:46 -0400 Received: from VPEXCH02.purdue.lcl ([169.254.2.19]) by WPPEXHUB03H.purdue.lcl ([172.21.6.92]) with mapi; Wed, 4 Apr 2012 14:48:46 -0400 From: "Stacey, Lisa A" To: "'msefaculty-list@ecn.purdue.edu'" , "'msestaff-list-bounces@ecn.purdue.edu'" , "'msepostdoc-list@ecn.purdue.edu'" , "'msegradstudent-list@ecn.purdue.edu'" Date: Wed, 4 Apr 2012 14:48:45 -0400 Subject: Reminder: Ehmke 4/5/12 Ph.D. Prelim Exam I Notice Thread-Topic: Reminder: Ehmke 4/5/12 Ph.D. Prelim Exam I Notice Thread-Index: Ac0MUyXOUvlM+hPLRsOF6pAfPtohvAGQFRAQ Message-ID: <92F872D971E7AA498CF64DD847E5594D83AB4CFFA5@VPEXCH02.purdue.lcl> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/related; boundary="_004_92F872D971E7AA498CF64DD847E5594D83AB4CFFA5VPEXCH02purdu_"; type="multipart/alternative" MIME-Version: 1.0 X-PMX-Version: 5.5.9.388399 X-PerlMx-Virus-Scanned: Yes X-ECN-MailServer-VirusScanned: by amavisd-new X-ECN-MailServer-Origination: mailhub128.itcs.purdue.edu [128.210.5.128] X-ECN-MailServer-SpamScanAdvice: DoNotScan --_004_92F872D971E7AA498CF64DD847E5594D83AB4CFFA5VPEXCH02purdu_ Content-Type: multipart/alternative; boundary="_000_92F872D971E7AA498CF64DD847E5594D83AB4CFFA5VPEXCH02purdu_" --_000_92F872D971E7AA498CF64DD847E5594D83AB4CFFA5VPEXCH02purdu_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MATERIALS SCIENCE AND ENGINEERING SEMINAR Microstructure Effects on the Properties of Layered rare-earth doped p-type Bi2Sr2Co2Oy Oxide Thermoelectrics by Matthias Ehmke Ph.D. Prelim Exam Part 1 Advisors Prof. K. Bowman & Prof. J. Blendell ABSTRACT With a growing world population, new technologies and globalization, humank= ind is facing a strong increase in energy demand. A growing energy demand = is also associated with larger greenhouse gas emissions, such as CO2 emissi= ons. One approach is to harvest the large amount of unused waste heat in h= ome heating, car exhaust, and industrial processes to produce electricity w= ith the use of thermoelectric devices. Current thermoelectric applications= are limited to small size devices such as car heaters and coolers, portabl= e picnic coolers, laser diode coolers, and radioisotope thermoelectric gene= rators. Those applications, however, only represent niche products. In or= der to revolutionize applications such as energy generation from waste heat= on a larger scale, thermoelectric materials are required that endure therm= al and chemical conditions present in such environments and also exhibit a = significantly increased efficiency. Semiconducting metal oxides, such as t= he layered cobalt oxide Bi2Sr2Co2Oy, are quite promising for this purpose, = because they exhibit a high thermal stability, high chemical resistance, ar= e generally non-toxic and at the same time can deliberately be designed to = show high thermoelectric performance. An overview over the concepts and per= formance of layered cobalt oxide thermoelectrics is given and the systemati= c investigation of the microstructure property relationship for different d= oping conditions and processing techniques is proposed. Date: Thursday, April 5, 2012 Time: 1:30 P.M. Place: ARMS 1028 Lisa Stacey Secretary/Development Assistant Purdue University School of Matierals Engineering 765/494-4100 --_000_92F872D971E7AA498CF64DD847E5594D83AB4CFFA5VPEXCH02purdu_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable = <= meta name=3DGenerator content=3D"Microsoft Word 12 (filtered medium)">

 

MATERIALS SCIENCE AND ENGINEERING

S= EMINAR

 

Microstructure Effects on the Properties of Layered rare-earth

doped p-type Bi2Sr2Co2Oy Oxide Thermoelectrics=

 

by

 

Matthias Ehmke

Ph.D. Prelim Exam = Part 1

 

Advisors

Prof. K. Bowman & Prof. J. Blend= ell

 

ABSTRACT

 

With a growing world population, new technologies and global= ization, humankind is facing a strong increase in energy demand.  A gr= owing energy demand is also associated with larger greenhouse gas emissions= , such as CO2 emissions.  One approach is to harvest the la= rge amount of unused waste heat in home heating, car exhaust, and industria= l processes to produce electricity with the use of thermoelectric devices.&= nbsp; Current thermoelectric applications are limited to small size devices= such as car heaters and coolers, portable picnic coolers, laser diode cool= ers, and radioisotope thermoelectric generators.  Those applications, = however, only represent niche products.  In order to revolutionize app= lications such as energy generation from waste heat on a larger scale, ther= moelectric materials are required that endure thermal and chemical conditio= ns present in such environments and also exhibit a significantly increased = efficiency.  Semiconducting metal oxides, such as the layered cobalt o= xide Bi2Sr2Co2Oy, are quite pro= mising for this purpose, because they exhibit a high thermal stability, hig= h chemical resistance, are generally non-toxic and at the same time can del= iberately be designed to show high thermoelectric performance. An overview = over the concepts and performance of layered cobalt oxide thermoelectrics i= s given and the systematic investigation of the microstructure property rel= ationship for different doping conditions and processing techniques is prop= osed.

 

 

 

 

 

 

 

 

 

Date:   Thursday, April 5, 2012

Time:        1:3= 0 P.M.

Place= :   ARMS 1028

 

 

 

= Lisa Stacey

Secretary/Development Assistant

Purdue University=

School of Matierals Engineering

765/494-4100=

 

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