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<p class="MsoNormal">There will be a Modern Optics and Spectroscopy seminar <b>tomorrow, Tuesday, December 12</b> at 12pm in 34-401 with Professor Renee Frontiera:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt">Professor Renee Frontiera<br>
</span></b><i><span style="font-size:14.0pt">University of Minnesota</span></i><b><span style="font-size:14.0pt"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><i><span style="font-size:14.0pt">How the environment controls chemistry: Raman spectroscopic probes of the effects of nanoscale environments on chemical reaction dynamics <o:p></o:p></span></i></b></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">My research program is broadly interested in how local environments affect chemical reaction dynamics. We focus on highly heterogeneous systems such as cellular membranes or photocatalytic devices, developing
and using new spectroscopic approaches to probe the dynamics on the relevant length scale. This talk will focus on two approaches to nanoscale Raman spectroscopies, techniques which are capable of monitoring chemical composition and dynamics on nanometer length
scales. First, I will discuss the development and implementation of a new super-resolution Raman microscopy technique, which is capable of probing chemical composition on the 10 nm length scale. This all-optical, label-free technique should have numerous applications
in imaging of soft and dynamic materials, including biological samples. The technique combines methods from super-resolution fluorescence microscopy with stimulated Raman microscopy. I’ll discuss our approach to achieving resolution well below the optical
diffraction limit, implementation of this new technique, and approaches to reaching resolution on the nanometer length scale. Secondly, I’ll present how we use plasmonic nanomaterials, which interact strongly with light and confine it to nanometer length scales,
to probe and drive new chemical reactions. We use surface-enhanced Raman spectroscopy on ultrafast timescales to monitor plasmon-driven processes in real time. Currently we are investigating the use of these nanomaterials to provide highly energetic carriers
and localized heating for photocatalysis. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Refreshments served immediately following the seminar<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>Christine Brooks</b><o:p></o:p></p>
<p class="MsoNormal">Administrative Assistant<o:p></o:p></p>
<p class="MsoNormal">Massachusetts Institute of Technology<o:p></o:p></p>
<p class="MsoNormal">Department of Chemistry<o:p></o:p></p>
<p class="MsoNormal">77 Massachusetts Ave, 6-333<o:p></o:p></p>
<p class="MsoNormal">Cambridge, MA 02139<o:p></o:p></p>
<p class="MsoNormal">p: 617.253.7239<o:p></o:p></p>
<p class="MsoNormal">e: <a href="mailto:cbrooks@mit.edu">cbrooks@mit.edu</a><o:p></o:p></p>
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