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VERSION:2.0
PRODID:-//Memento EPFL//
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SUMMARY:POB seminar - Nathan Ronceray - "Surprising fluorescence of a 2D c
 rystal in liquid: from fundamentals of quantum emitters to applications in
  nanofluidics"
DTSTART:20230411T181500
DTEND:20230411T201500
DTSTAMP:20260611T071534Z
UID:94a27290036552fdf123f9cd662a6afcaae94467fedf9966ed18869c
CATEGORIES:Conferences - Seminars
DESCRIPTION:Nathan Ronceray\nEPFL Photonics Chapter (EPC) is pleased to 
 invite you to our monthly POB (Pizza-Optics-Beer) seminar! It is set t
 o take place on Tuesday\, April 11\, 2023\, at 18:15 in CM 0 10.\nFor or
 ganizational purposes\, please register for the event using this doodle
  before April 11\, 2023.\n\n \n\nThis month\, Nathan Ronceray will give
  a talk on his work "Surprising fluorescence of a 2D crystal in liquid: 
 from fundamentals of quantum emitters to applications in nanofluidics" :\n
 \nHexagonal boron nitride is a layered two-dimensional crystal with a wide
  band-gap (6 eV)\, which means it should not interact with visible light (
 ~2 eV) to produce photoluminescence. However\, we found that when this cry
 stal is placed in (non-fluorescent) liquids such as ethanol\, fluorescent 
 point emitters appear at its surface. I will present our investigation of 
 this strange phenomenon\, which we attribute to the activation of native s
 urface defects by the binding of liquid molecules\, producing bright singl
 e-photon (quantum) emitters. Super-resolution imaging of the emitters reve
 als the motion of molecules from defect to defect\, while their spectra an
 d lifetimes show sensitivity to their dielectric environment. We further e
 xploit these couplings with the environment to sense liquid flows\, solven
 t changes\, electric fields and nanoconfinement.\n\nReference: https://arx
 iv.org/abs/2204.06287\n\n\n\n--\n\nYou don't know POBs?\nPOBs (Pizza-Optic
 s-Beer) are monthly seminars organized by the student association EPFL Pho
 tonics Chapter.\nA PhD or a postdoc gives a 20-minutes presentation about 
 his/her research in photonics. Discussions continue informally around pizz
 a and beers!\nThe event is free and open to anyone.\n\nWe thank the Doctor
 al Program in Photonics (EPDO)\, the Society of Photo-Optical Instrumentat
 ion Engineers (SPIE.)\, Optica and SwissPhotonics for their support.
LOCATION:CM 0 10 https://plan.epfl.ch/?room==CM%200%2010
STATUS:CONFIRMED
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