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<!--StartFragment--><p class="MsoTitle" style="margin-right:-.5in"><b style="mso-bidi-font-weight:
normal"><span style="font-family:"Times New Roman""><font class="Apple-style-span" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span>Seminar on<o:p></o:p></font></span></b></p><p class="MsoTitle" style="margin-right:-.5in"><b style="mso-bidi-font-weight:
normal"><span style="font-family: 'Times New Roman'; "><o:p><font class="Apple-style-span" size="4"> <span class="Apple-tab-span" style="white-space:pre"> </span></font></o:p></span></b><span class="Apple-style-span" style="font-size: large; "><b style="mso-bidi-font-weight:
normal"><span style="letter-spacing: 1.5pt; ">Modern Optics and Spectroscopy</span></b></span><b style="mso-bidi-font-weight:
normal"><span style="font-family: Arial; letter-spacing: 1pt; "><o:p><font class="Apple-style-span" size="4"> </font></o:p></span></b></p><p class="MsoNormal" align="center" style="margin-right:-13.5pt;text-align:center"><font class="Apple-style-span" size="4"><b style="mso-bidi-font-weight:normal"><i style="mso-bidi-font-style:normal">Adding dimensions to
vibrational spectroscopy: 2D sum-frequency generation (SFG) spectroscopy and
dye-sensitized solar cells</i></b><b style="mso-bidi-font-weight:normal"><i style="mso-bidi-font-style:normal"><o:p></o:p></i></b></font></p><p class="MsoNormal" align="center" style="text-align:center"><b style="mso-bidi-font-weight:
normal"><i style="mso-bidi-font-style:normal"><span style="letter-spacing: 1pt; "><o:p><font class="Apple-style-span" size="4"> </font></o:p></span></i></b></p><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" size="4"><b style="mso-bidi-font-weight:
normal">Martin Zanni</b><span style="letter-spacing: 1pt; ">,<o:p></o:p></span></font></p><p class="MsoNormal" align="center" style="text-align:center"><span style="letter-spacing: 1pt; "><font class="Apple-style-span" size="4">University
of Wisconsin, Madison<o:p></o:p></font></span></p><p class="MsoNormal" align="center" style="text-align:center"><span style="letter-spacing: 1pt; "><o:p><font class="Apple-style-span" size="4"> </font></o:p></span></p><p class="MsoNormal" align="center" style="text-align:center"><span style="letter-spacing: 1pt; "><font class="Apple-style-span" size="4">Tuesday,
October 4, 2011<o:p></o:p></font></span></p><p class="MsoNormal" align="center" style="text-align:center"><span style="letter-spacing: 1pt; "><o:p><font class="Apple-style-span" size="4"> </font></o:p></span></p><p class="MsoNormal" align="center" style="text-align:center"><span style="letter-spacing: 1pt; "><font class="Apple-style-span" size="4">12:00 –
1:00 p.m.<o:p></o:p></font></span></p><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" face="Arial" size="4"><span class="Apple-style-span" style="letter-spacing: 1px;"><br></span></font></p><p class="MsoNormal" style="text-align:justify"><font class="Apple-style-span" size="4"><span style="font-family:Helvetica;
mso-bidi-font-family:Helvetica">I will describe experiments aimed at
characterizing the structures and dynamics of organic/inorganic interfaces.
These experiments include the electron transfer dynamics of molecular
dyes on TiO2 semiconductor using transient 2D IR spectroscopy. 2D IR
spectroscopy allows us to resolve multiple dye conformations and discover that
they have different electron transfer rates. My talk will also include
the development of time-domain sum-frequency generation spectroscopy and
heterodyne detected 2D SFG spectroscopy. The goal is to better
characterize the structures of the dyes on TiO2, but SFG spectra are often
distorted and thus difficult to implement. I will present the first
experiments that are the direct analog of 2D IR spectroscopy, but with surface
sensitivity.</span><o:p></o:p></font></p><p class="MsoNormal" style="text-align:justify"><o:p><font class="Apple-style-span" size="4"> </font></o:p><span class="Apple-style-span" style="font-size: large; "> </span></p><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" size="4">Grier Room, MIT Bldg 34-401<o:p></o:p></font></p><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" size="4">Refreshments served after
the lecture</font><font class="Apple-style-span" size="6"><o:p></o:p></font></p>
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