<div dir="ltr"><div>Hello, </div><div><br></div><div>Join us on March 26th to hear from Dr. Likun Wang in MSE at 3pm! </div><div><b style="font-family:"Times New Roman",serif;font-size:12pt;text-align:justify"><br></b></div><div><b style="font-family:"Times New Roman",serif;font-size:12pt;text-align:justify">Tunneling photocurrent spectroscopy of in-situ twisted 2D materials with the optical quantum twisting microscope</b></div><p class="MsoNormal" style="margin:0in;text-align:justify;font-size:10.5pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif">Dr. Likun Wang</span></p><p class="MsoNormal" style="margin:0in;text-align:justify;font-size:10.5pt;font-family:Calibri,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif;font-size:small">Quantum Nano-Optoelectronics Group,</span></p>ICFO-The Institute of Photonic Sciences, Spain<p class="MsoNormal" style="margin:0in;text-align:justify;font-size:10.5pt;font-family:Calibri,sans-serif"><span style="font-family:"Times New Roman",serif"> </span></p><p class="MsoNormal" style="margin:0in;text-align:justify;font-size:10.5pt;font-family:Calibri,sans-serif"><b><span style="font-size:12pt;font-family:"Times New Roman",serif">Abstract: </span></b><span style="font-size:12pt;font-family:"Times New Roman",serif">Quantum twisting microscope (QTM) is a new and powerful platform to study in-situ twistronics and momentum-resolved band structure imaging of 2D materials. Further combining it with light allows probing the optical and optoelectronic properties of two layers of 2D materials stacked on top of each other with a tunable twist angle. In this talk, I will present the development of an optical quantum twisting microscope which is equipped with both continuous wave lasers and home-built Fourier transform infrared (FTIR) spectrometer based on a supercontinuum laser. Light induced tunneling photocurrent spectroscopy is performed to study the photo excitation process in different vertical tunnel junctions while tuning the twist angle continuously.</span></p><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><p style="color:rgb(36,36,36);font-size:11pt;font-family:Calibri,sans-serif;margin:0px"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:10pt;line-height:inherit;font-family:"Book Antiqua",serif;font-size-adjust:inherit;margin:0px;padding:0px;vertical-align:baseline;color:rgb(46,116,181)">Thank you,</span></p><p style="color:rgb(36,36,36);font-family:"Segoe UI","Segoe UI Web (West European)",-apple-system,BlinkMacSystemFont,Roboto,"Helvetica Neue",sans-serif;font-size:15px;margin:0px"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:11pt;line-height:inherit;font-family:"Lucida Handwriting","Apple Chancery",cursive;font-size-adjust:inherit;margin:0px;padding:0px;vertical-align:baseline;color:rgb(23,78,134)">Arianna Mejia </span><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:9pt;line-height:inherit;font-family:Candara,Optima,sans-serif;font-size-adjust:inherit;margin:0px;padding:0px;vertical-align:baseline;color:rgb(23,78,134)"><i>(formally Mondragon)</i></span></p><p style="color:rgb(36,36,36);font-size:11pt;font-family:Calibri,sans-serif;margin:0px"><span style="border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:inherit;line-height:inherit;font-family:"Franklin Gothic Medium","Avenir Next Condensed Medium",sans-serif;font-size-adjust:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black">Travel & Events Coordinator</span></p><p style="color:rgb(36,36,36);font-size:11pt;font-family:Calibri,sans-serif;margin:0px"><span style="border:0px;font:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black">UC Riverside<b> |</b> Physics & Astronomy</span></p><p style="color:rgb(36,36,36);font-size:11pt;font-family:Calibri,sans-serif;margin:0px"><span style="border:0px;font:inherit;margin:0px;padding:0px;vertical-align:baseline;color:black">3047 Physics Building <b>|</b> Riverside, California 92521</span></p><p style="color:rgb(36,36,36);font-size:11pt;font-family:Calibri,sans-serif;margin:0px"><span style="border:0px;font:inherit;margin:0px;padding:0px;vertical-align:baseline;color:rgb(68,114,196);background-color:silver"><b>In-person office hours:  Tuesday, Thursday and Friday, 8AM-5PM</b></span></p><p style="color:rgb(36,36,36);font-size:11pt;font-family:Calibri,sans-serif;margin:0px"><span style="border:0px;font:inherit;margin:0px;padding:0px;vertical-align:baseline;color:rgb(68,114,196);background-color:silver"><b>Remote: Monday, Wednesday</b></span></p><p style="color:rgb(36,36,36);font-size:11pt;font-family:Calibri,sans-serif;margin:0px"><img style=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