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SUMMARY:MechE Colloquium: Nano-optics gets practical
DTSTART:20191126T121500
DTEND:20191126T131500
DTSTAMP:20260509T100832Z
UID:9e24acb10c2fc4d39535607d5221664df3bffcf197df9d1596e0e13e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Romain Guidant\, Institute of Photonic Sciences (ICFO)\n
 Abstract:\nTwenty years of extensive research in the field of nanooptics h
 ave enabled us to considerably advance light control on the nanometer scal
 e. Beyond the original peak of inflated expectation\, the assets of nanoop
 tics over other technologies became clearer along with its limitations. Mo
 re recently\, the field has entered into the slope of enlightenment in whi
 ch its actual contribution to both basic research and novel technologies h
 as been better identified. In this talk\, following a general introduction
  on the main assets of nano-optics\, we will review different aspects of o
 ur research where nano-optical resonators are used as an enabling technolo
 gy that can benefit a wide range of scientific disciplines\, all the way f
 rom reconfigurable planar optics to biomedicine.\nThe first part of the ta
 lk focuses on our recent efforts towards reconfigurable metasurfaces. Our 
 approach relies on dynamically controlling the refractive index in the clo
 se vicinity of a silicon metalens by means of a resistor embedded in a the
 rmo-optical polymer. We demonstrate precise and continuous tuneability of 
 the focal length\, and achieve focal length variations larger than the Ray
 leigh length for voltage as low as 10V and time-response in the 10ms range
 . We also demonstrate that by solving the inverse problem\, we are able to
  deterministically achieve any desired phase front. In the second part of 
 the talk\, we discuss the use of both dielectric and metallic nanoresonato
 rs in the context of biosensing and lab-on-a-chip technology. The sensors 
 are integrated into a state-of-the-art PDMS microfluidic environment and t
 heir surface functionalized to achieve specific detection of the targeted 
 biomarkers. We directly compare the performance of gold and silicon nanose
 nsors and discuss their respective advantages. Finally\, we discuss our la
 test advances in the field of thermoplasmonics\, presenting two new applic
 ation in additive manufacturing (3D printing) and disinfection of surgical
  implants.\n \nBio:\nI received a PhD in Physics (2002) from the Universi
 ty of Dijon\, in France. Right after defending my thesis\, I joined ICFO a
 s a postdoctoral researcher. This was the year of its creation and I was l
 ucky enough to get actively involved into the early developments of the In
 stitute. In 2006\, I was appointed junior Professor (tenure-track) and gro
 up leader of the Plasmon NanoOptics group at ICFO. In 2009\, I became tenu
 re Professor both at ICFO and ICREA. While my core expertise is in fundame
 ntal nano-optics\, I am very much interested in multidisciplinary research
 \, interfacing physics with other disciplines of science\, as well as in t
 echnology transfer. I am recipient of 4 ERC grants (StG2010\, PoC2011\, Po
 C2015 and CoG2015) and several international and national prizes (Fresnel2
 009\, City of BCN2010\, ICO2012\, CAT2014\, BS2017). Since 2014\, I serve 
 as an associate editor for ACSPhotonics (American Chemical Society).
LOCATION:MED 0 1418 https://plan.epfl.ch/?room==MED%200%201418
STATUS:CONFIRMED
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