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DTSTAMP:20260405T125542Z
UID:756fedb2-0665-4d24-b27b-16f151ab6028
DTSTART:20250423T140000Z
DTEND:20250423T150000Z
DESCRIPTION:See registration below \n			\n				\n				\n				\n				\n				Speak
 er: Mika Pettersson (Laserlab-NSC) \nGraphene and other 2D materials have 
 many excellent properties but seldom they can be used as such in advanced 
 applications. One option is to chemically modify and functionalize 2D mate
 rials. However\, many applications require spatially selective functionali
 zation and patterning. Laser-based methods offer many advantages in this r
 egard. A common optical material modification technique is laser ablation.
  However\, for graphene\, more interesting condition is just below the abl
 ation threshold\, where non-linear excitation of material takes place. Und
 er these conditions\, graphene reacts with adsorbed oxygen and water prese
 nt in ambient air\, leading to oxidative functionalization without breakin
 g the carbon lattice integrity [1]. Interestingly\, optically induced loca
 l functionalization of graphene leads to many opportunities for developmen
 t of applications via processes such as: modification of electronic proper
 ties [1]\, locally selective immobilization of proteins [2\,3]\, area-sele
 ctive atomic or molecular layer deposition [4\,5]\, modification of optica
 l properties [6]\, tuning of the response of sensors [7]\, or affecting mo
 lecular self-assembly [8]. The methods can be applied for development of s
 ensors\, (opto)electronic devices\, flexible and transparent electronics\,
  bioelectronics\, and so on. \nIn this talk\, I will introduce controlled 
 oxidative functionalization of graphene by femtosecond laser excitation an
 d show several examples of how this method can be used to facilitate devel
 opment of functional devices. \nReferences[1] J. Aumanen et al.\, Nanoscal
 e\, 7\, 2851-2855 (2015).[2] E. D. Sitsanidis et al. Nanoscale Adv. 3\, 20
 65 – 2074 (2021).[3] A. Lampinen et al. RSC Appl. Interfaces\, 1\, 1305 
 (2024).[4] K. K. Mentel et al. Adv. Mater. Interfaces 9\, 2201110 (2022).[
 5] A\, V. Emelianov et al. https://doi.org/10.26434/chemrxiv-2024-81qv0\, 
 ChemRxiv[6] V.-M-. Hiltunen et al. J. Phys. Chem. C\, 124\, 8371 – 8377 
 (2020).[7] A. Lampinen et al. Phys. Chem. Chem. Phys. 25\, 10778 – 10784
  (2023).[8] J. Schirmer et al. Phys. Chem. Chem. Phys. 25\, 8725 – 8733 
 (2023). \n			\n			\n				\n				\n				\n				\n			\n				\n				\n				\n				\n	
 			\n				\n				\n				\n				\n				\n				Registration\n			\n				\n				\n				
 \n				\n				\n	Notice: JavaScript is required for this content.
SUMMARY:Laserlab-Europe Talk: Optical modification of graphene for applicat
 ions
URL;VALUE=URI:https://laserlab-europe.eu/event/lle-talk-optical-modificatio
 n-of-graphene-for-applications/
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