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SUMMARY:POW Seminar - Copper as a Nonlinear Platform: Stable SHG from Mono
 crystalline Microflakes
DTSTART:20251209T181500
DTEND:20251209T201500
DTSTAMP:20260526T150151Z
UID:b76c9bac635819531ebb67c2b3909187a3a8c0e69df40d8fe9d5df23
CATEGORIES:Conferences - Seminars
DESCRIPTION:Elif Nur Dayi\nThe EPFL Photonics Chapter (EPC) is very plea
 sed to announce and cordially invite you to the Christmas edition of our m
 onthly ‘Pizza-Optics-Beer’ (POB) seminar\, renamed for this occasion
  POW (there will be mulled wine)\, on Tuesday December 9th\, at 18:15 i
 n room CM 1 106.\n\nThis month we will have the pleasure to host Elif Nu
 r Dayi - doctoral assistant in  Laboratory of Nanoscience for Energy Tec
 hnologies with the presentation entitled:\n\n"Copper as a Nonlinear Platfo
 rm: Stable SHG from Monocrystalline Microflakes"\n\nFor organizational pur
 poses (if you want to eat pizza!)\, please confirm your participation usi
 ng this Doodle.\nDon’t hesitate to extend the invitation to any postdo
 c and colleague!\n\nHope to see you there\,\nThe EPFL Photonics Chapter te
 am\n\n\nAbstract:\nMonocrystalline copper has remained largely unexplored 
 as a nonlinear optical material because its surface oxidizes rapidly\, des
 pite its importance in catalysis\, plasmonics\, and energy conversion. Her
 e we show that oxidation-resistant Cu(111) microflakes grown through an on
 -substrate synthesis route enable stable and reproducible second-harmonic 
 generation (SHG) under ambient conditions. The SHG signal remains highly s
 table during three hours of continuous femtosecond excitation\, demonstrat
 ing remarkable photostability. Polarization-resolved measurements reveal a
  clear six-lobe pattern characteristic of C₃ᵥ surface symmetry\, with 
 strong cross-polarized emission when the incident field aligns with crysta
 l axes. By contrast\, polycrystalline Cu films produce weak\, isotropic SH
 G\, highlighting the role of monocrystallinity and surface order. Together
 \, these results establish monocrystalline Cu(111) as a robust and anisotr
 opic nonlinear optical platform\, broadening copper’s potential in plasm
 onic and nanophotonic systems as well as in surface-specific optical studi
 es relevant to catalysis and energy interfaces.\n\n\nYou don't know POBs?\
 nPOBs (Pizza-Optics-Beer) are monthly seminars organized by the student as
 sociation EPFL Photonics Chapter.\nA PhD or a postdoc gives a 20-minutes p
 resentation about his/her research in photonics. Discussions continue info
 rmally around pizza and beers!\nFor this Christmas edition\, we will have 
 mulled wine instead\, so the POB will become a POW ("Pizza-Optics-Wine").\
 n\nThe event is free and open to anyone.\n\n\nWe thank the Doctoral Progra
 m in Photonics (EPDO)\, the Society of Photo-Optical Instrumentation Engi
 neers (SPIE.)\, Optica and SwissPhotonics for their support.
LOCATION:CM 1 106 https://plan.epfl.ch/?room==CM%201%20106
STATUS:CONFIRMED
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