BEGIN:VCALENDAR
VERSION:2.0
PRODID:https://murmitoyen.com/events/vanille/udem/
X-WR-TIMEZONE:America/Montreal
BEGIN:VEVENT
UID:69e08741702e1
DTSTAMP:20260416T025249
DTSTART:20131115T113000
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20131115T123000
URL:https://murmitoyen.com/events/vanille/udem/detail/318754
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:An organic interface for cell photo-stimulation: Towards the organi
 c artificial retina– Guglielmo Lanzani\, IIT\, Milano\, Italy
DESCRIPTION:Guglielmo Lanzani\, Center for Nano Science and Technology of I
 IT & Politecnico di Milano\, ItalyThis talk introduces the use of organic 
 semiconductors as artificial photoreceptors in bio-mimetic devices. This r
 esearch started some years ago by demonstrating that organic semiconductor
 s can be used to reproduce the natural retina photoreceptor spectral respo
 nse in standard photo-diodes [1]. The second step was the development of h
 ybrid solid liquid photodiodes that can naturally interface with a biologi
 cal environment through the electronic/ionic interface [2]. Subsequently w
 e were able to demonstratethat primary neurons rom rat brains grown on top
  of a photovoltaic semiconducting polymer acquire light sensitivity [3]. T
 his occurs through a specific mechanism of cell stimulation by polymer pho
 toexcitation (CSP) that will be discussed in the presentation. We then stu
 died explanted retinas put in contact with our organic device. We will sho
 w that blind retinas\, i.e. retinas with severe damage of the photorecepto
 rs\, do regain light sensitivity\, as demonstrated by ganglion cell electr
 ical activity upon illumination [4]. The process\, its relation to CSP\, p
 erspective and future developments will be discussed. M. Antognazza  et 
 al.\, Appl. Phys. Lett. 90\, 163509 (2007)M. Antognazza  et al.\, Appl. 
 Phys. Lett. 94\, 243501 (2009)Diego Ghezzi et al.\, Nat. Commun. 2\, 166 
 (2011)Diego Ghezzi et al.\, Nat. Photonics 7\, 400 (2013)Site web du grou
 pe de  Prof. Lanzani'sCette conférence s'adresse à tous\, y compris les 
 professeurs\, les chercheurs et les étudiants des trois cycles.Le café e
 st servi à partir de 11h20.Cette conférence est présentée par le RQMP 
 Versant Nord du Département de physique de l'Université de Montréal et
  le Département de génie physique de Polytechnique Montréal.
END:VEVENT
BEGIN:VTIMEZONE
TZID:America/Montreal
X-LIC-LOCATION:America/Montreal
END:VTIMEZONE
END:VCALENDAR