Received: from mx05.ecn.purdue.edu (mx05.ecn.purdue.edu [128.46.88.3]) by mailbag.ecn.purdue.edu (8.14.4/8.14.4) with ESMTP id q2RJr2nb028291 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 27 Mar 2012 15:53:02 -0400 (EDT) Received: from mailhub128.itcs.purdue.edu (mailhub128.itcs.purdue.edu [128.210.5.128]) by mx05.ecn.purdue.edu (8.14.4/8.14.4) with ESMTP id q2RJqWsI015624 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 27 Mar 2012 15:52:32 -0400 Received: from WPPEXHUB04H.purdue.lcl (wppexhub04h.itap.purdue.edu [172.21.6.93]) by mailhub128.itcs.purdue.edu (8.14.4/8.14.4/mta-nopmx.smtp.purdue.edu) with ESMTP id q2RJqWxr007786; Tue, 27 Mar 2012 15:52:32 -0400 Received: from VPEXCH02.purdue.lcl ([169.254.2.214]) by WPPEXHUB04H.purdue.lcl ([::1]) with mapi; Tue, 27 Mar 2012 15:52:32 -0400 From: "Stacey, Lisa A" To: "'msefaculty-list@ecn.purdue.edu'" , "'msepostdoc-list@ecn.purdue.edu'" , "'msegradstudent-list@ecn.purdue.edu'" Date: Tue, 27 Mar 2012 15:52:31 -0400 Subject: Revised Ehmke 4/5/12 Ph.D. Prelim Exam I Notice Thread-Topic: Revised Ehmke 4/5/12 Ph.D. Prelim Exam I Notice Thread-Index: Ac0MUyXOUvlM+hPLRsOF6pAfPtohvA== Message-ID: <92F872D971E7AA498CF64DD847E5594D82F88B67A9@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_92F872D971E7AA498CF64DD847E5594D82F88B67A9VPEXCH02purdu_"; 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_92F872D971E7AA498CF64DD847E5594D82F88B67A9VPEXCH02purdu_ Content-Type: multipart/alternative; boundary="_000_92F872D971E7AA498CF64DD847E5594D82F88B67A9VPEXCH02purdu_" --_000_92F872D971E7AA498CF64DD847E5594D82F88B67A9VPEXCH02purdu_ 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_92F872D971E7AA498CF64DD847E5594D82F88B67A9VPEXCH02purdu_ 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 ENGINEERIN= G

<= span style=3D'font-size:14.0pt'>SEMINAR

&nbs= p;

Microstructure Effects on the P= roperties of Layered rare-earth

doped p-type Bi2Sr2Co2Oy= Oxide Thermoelectrics

 

by

 

Mat= thias Ehmke

Ph.D. Prelim Exam Part 1

 

Advisors=

Pro= f. K. Bowman & Prof. J. Blendell

 

ABSTRACT

=  

With a growing world popula= tion, new technologies and globalization, humankind is facing a strong incr= ease in energy demand.  A growing energy demand is also associated wit= h larger greenhouse gas emissions, such as CO2 emissions.  = One approach is to harvest the large amount of unused waste heat in home he= ating, car exhaust, and industrial processes to produce electricity with th= e use of thermoelectric devices.  Current thermoelectric applications = are limited to small size devices such as car heaters and coolers, portable= picnic coolers, laser diode coolers, and radioisotope thermoelectric gener= ators.  Those applications, however, only represent niche products.&nb= sp; In order to revolutionize applications such as energy generation from w= aste heat on a larger scale, thermoelectric materials are required that end= ure thermal and chemical conditions present in such environments and also e= xhibit a significantly increased efficiency.  Semiconducting metal oxi= des, such as the layered cobalt oxide Bi2Sr2Co2<= /sub>Oy, are quite promising for this purpose, because they exhi= bit a high thermal stability, high chemical resistance, are generally non-t= oxic and at the same time can deliberately be designed to show high thermoe= lectric performance. An overview over the concepts and performance of layer= ed cobalt oxide thermoelectrics is given and the systematic investigation o= f the microstructure property relationship for different doping conditions = and processing techniques is proposed.

 

 

 

 

 

&= nbsp;

 = ;

 

 <= /p>

Date:   = Thursday, April 5, 2012

Time:  &= nbsp;     1:30 P.M.

Place:   ARMS 1028<= /p>

 

=  

 

Lisa Stacey

Secretary/Development Assistant

Purdue University

=

School of Matierals Engineering

765/494-4100

<= p class=3DMsoNormal> 

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