<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><!--StartFragment--><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; font-weight: bold; font-style: italic; ">
<!--StartFragment--><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-family: Helvetica; ">
<!--StartFragment--><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size:24.0pt;
font-family:Arial;mso-ascii-font-family:Arial;mso-fareast-font-family:"ＭＳ Ｐゴシック";
mso-bidi-font-family:"ＭＳ Ｐゴシック";color:white;mso-color-index:1;mso-font-kerning:
12.0pt;language:en-US">
<!--StartFragment--><div style="text-align: left;margin-top: 0pt; margin-bottom: 0pt; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 28pt; font-family: Arial; font-weight: bold; "><font class="Apple-style-span" color="#000000"><span class="Apple-style-span" style="font-family: Calibri, sans-serif; font-style: normal; font-weight: normal; font-size: 15px; "><b><span style="font-size: 14pt; color: rgb(79, 129, 189); text-transform: uppercase; font-family: Arial, sans-serif; ">CENTER FOR EXCITONICS</span></b><span style="font-family: Arial, sans-serif; "> <b><br>Seminar Series Announcement</b></span></span></font></span></div><div style="text-align: left;margin-top: 0pt; margin-bottom: 0pt; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 28pt; font-family: Arial; font-weight: bold; "><font class="Apple-style-span" color="#000000"><span class="Apple-style-span" style="font-family: Calibri, sans-serif; font-style: normal; font-weight: normal; font-size: 15px; "><span style="font-family: Arial, sans-serif; "><b><br></b></span></span></font></span></div><div style="text-align: left;margin-top: 0pt; margin-bottom: 0pt; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 28pt; font-family: Arial; font-weight: bold; "><font class="Apple-style-span" color="#000000"><span class="Apple-style-span" style="font-style: normal;">Optimization of Energy Transfer</span></font></span></div><div style="text-align: left;margin-top: 0pt; margin-bottom: 0pt; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 28pt; font-family: Arial; font-weight: bold; "><font class="Apple-style-span" color="#000000"><span class="Apple-style-span" style="font-style: normal;">Processes in Photosynthetic Systems</span></font></span></div>
<!--EndFragment-->
</span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-family: Arial; "><font class="Apple-style-span" size="6"><span class="Apple-style-span" style="font-size: 20px;"><br></span></font></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-family: Arial; "><font class="Apple-style-span" size="6"><span class="Apple-style-span" style="font-size: 20px;">Jianshu</span></font></span><span style="font-family: Arial; "><font class="Apple-style-span" size="6"><span class="Apple-style-span" style="font-size: 20px;"> Cao</span></font></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><font class="Apple-style-span" size="6"><span class="Apple-style-span" style="font-size: 20px;"><span style="font-family: Arial; "></span></span></font><span style="font-family: Arial; "><font class="Apple-style-span" size="6"><span class="Apple-style-span" style="font-size: 20px;">Massachusetts
Institute of Technology</span></font></span></div>
<!--EndFragment-->
</span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-family: Helvetica; "><br></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-family: Helvetica; ">Tuesday, December 7, 2010</span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-family: Helvetica; ">3:00 PM</span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-family: Helvetica; "></span><span style="font-family: Helvetica; ">Hermann </span><span style="font-family: Helvetica; ">Haus</span><span style="font-family: Helvetica; "> Room, 36-428</span></div>
<!--EndFragment-->
</span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; font-weight: bold; font-style: italic; "><br></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; "><b>Abstract</b></span><span style="font-size: 11pt; font-family: Arial; "></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; font-weight: bold; font-style: italic; "><br></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; ">Excitation energy transfer (EET) in photosynthetic
systems can be highly efficient and robust. In this talk, I will discuss the
optimization of both natural and artificial systems: </span></div><p style="margin-top:0pt;margin-bottom:0pt;text-align:left;direction:ltr;
unicode-bidi:embed;vertical-align:baseline"><span style="font-size: 11pt; font-family: Arial; ">
</span></p>
<div class="O1" style="margin-top:0pt;margin-bottom:0pt;margin-left:.5in;
text-indent:-.31in;text-align:left;direction:ltr;unicode-bidi:embed;vertical-align:
baseline"><span style="font-size:11.0pt"><span style="mso-special-format:bullet;
font-family:Arial">•</span></span><span style="font-size: 11pt; font-family: Arial; "> A simple
scaling theory is used to examine the interplay of quantum coherence,
dynamic noise, and static
disorder in efficient energy transfer. </span></div>
<div class="O1" style="margin-top:0pt;margin-bottom:0pt;margin-left:.5in;
text-indent:-.31in;text-align:left;direction:ltr;unicode-bidi:embed;vertical-align:
baseline"><span style="font-size:11.0pt"><span style="mso-special-format:bullet;
font-family:Arial">•</span></span><span style="font-size: 11pt; font-family: Arial; "> The
symmetry and network connectivity reveal useful insights into the optimal
structure of photosynthetic systems. </span></div>
<div class="O1" style="margin-top:0pt;margin-bottom:0pt;margin-left:.5in;
text-indent:-.31in;text-align:left;direction:ltr;unicode-bidi:embed;vertical-align:
baseline"><span style="font-size:11.0pt"><span style="mso-special-format:bullet;
font-family:Arial">•</span></span><span style="font-size: 11pt; font-family: Arial; ">
Distributions of </span><span style="font-size: 11pt; font-family: Arial; ">fluorescent</span><span style="font-size: 11pt; font-family: Arial; "> </span><span style="font-size: 11pt; font-family: Arial; ">chromophores</span><span style="font-size: 11pt; font-family: Arial; "> on a self-assembling
molecular architecture can be optimized to achieve the maximal antenna effect. </span></div><p style="margin-top:0pt;margin-bottom:0pt;text-align:left;direction:ltr;
unicode-bidi:embed;vertical-align:baseline"><span style="font-size: 11pt; font-family: Arial; "> </span></p><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; ">*The reported work is a collaboration with J. Wu, J.
Kim, and R. </span><span style="font-size: 11pt; font-family: Arial; ">Silbey</span><span style="font-size: 11pt; font-family: Arial; ">
</span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; "><br></span></div><p style="margin-top:0pt;margin-bottom:0pt;text-align:left;direction:ltr;
unicode-bidi:embed;vertical-align:baseline"><span style="font-size: 11pt; font-family: Arial; font-weight: bold; font-style: italic; ">
</span></p><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; font-weight: bold; ">Bio</span><span style="font-size: 11pt; font-family: Arial; "></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; font-weight: bold; font-style: italic; "><br></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; ">Jianshu</span><span style="font-size: 11pt; font-family: Arial; "> Cao is an associate professor of chemistry at MIT. He
received a Ph.D. in physics from Columbia University in 1993. After
postdoctoral research at the University of Pennsylvania and at UCSD, he joined
the MIT faculty in 1998. His research interests include quantum dynamics of
molecular systems, stochastic analysis of single molecule measurements,
self-assembly of colloids and polymers, and mechanical properties of cells and
bio-molecules.</span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; "><br></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; "><span class="Apple-style-span" style="font-family: Calibri, sans-serif; "><i><span style="font-size: 10pt; color: rgb(0, 112, 192); font-family: Verdana, sans-serif; ">The Center for Excitonics is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences</span></i></span></span></div><div style="margin-top: 0pt; margin-bottom: 0pt; text-align: left; direction: ltr; unicode-bidi: embed; vertical-align: baseline; "><span style="font-size: 11pt; font-family: Arial; "><span class="Apple-style-span" style="font-family: Calibri, sans-serif; "><i><span style="font-size: 10pt; color: rgb(0, 112, 192); font-family: Verdana, sans-serif; "></span></i></span></span></div></body></html>