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SUMMARY:IEM Distinguished Lecturers Seminar: Wavelength-Resolved 3D Printi
 ng
DTSTART:20261104T121500
DTEND:20261104T130000
DTSTAMP:20261001T160711Z
UID:f1703b75ea9becb4d5b98811db081d397629bdee6434115d755755fc
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Christopher Barner-Kowollik\, Karlsruhe Institute of T
 echnology\, Germany\, and Queensland University of Technology\, Australia\
 n*** Drinks and pizza at 11:45 in the lobby of BM 5202 ***\n\nThis is a sp
 ecial joint seminar organized by IEM and ISIC\, as part of a two-part lect
 ure series. The second lecture will take place on November 5.\n\nAbstract\
 nPhotoinitiators drive light-triggered polymerization\, enabling applicati
 ons from coatings to microelectronics and additive manufacturing. However\
 , disparate experimental conditions and a lack of standardized protocols m
 ake it difficult to directly compare photoinitiator performance across pho
 topolymerization and 3D printing systems. We herein discuss photochemical 
 reactivity relating to additive manufacturing on three levels: Photolytic 
 cleavage\, photopolymerization kinetics and 3D printing performance. As a 
 demonstration\, we couple a stereolithography set-up with a tuneable monoc
 hromatic laser to generate a 3D Printed Action Plot (3D-PAP)\, demonstrati
 ng that although printing reactivity does not fully mirror solution-based 
 wavelength dependent curing\, curing at longer wavelengths yields more eff
 icient printing and superior mechanical properties\, consistent with react
 ivity trends seen in solution. We suggest that a hierarchical\, comparable
  dataset approach may offer quantitative metrics to enable structure–rea
 ctivity analysis and data-driven discovery of next-generation photoinitiat
 ors and photoresin formulations.\n \n\n \nBio\nChristopher Barner-Kowoll
 ik is a leading expert in photochemistry\, exploiting precision photochemi
 cal concepts for advanced soft matter material synthesis\, including for l
 ight-driven 3D printing. He and his team developed a wide array of multi-c
 olour photochemical reactions modes and pioneered wavelength-resolved phot
 ochemical action plots\, which have demonstrated wavelength-dependent reac
 tivity that is often mismatched with molecular absorptivity. He currently 
 leads research teams at the Karlsruhe Institute of Technology (KIT) and th
 e Queensland University of Technology (QUT). After a PhD in Göttingen\, h
 e held leadership roles in Australia and Germany\, including at UNSW and K
 IT\, before establishing QUT’s Soft Matter Materials Laboratory. In 2026
 \, he was appointed Institute Director and Alexander von Humboldt Professo
 r at the KIT. His work has earned numerous international awards\, includin
 g the UK Macro Medal (2020)\, the European Polymer Federation Prize (2022)
 \, the Royal Society of Chemistry Centenary Prize (2023)\, and Germany’s
  Alexander von Humboldt Professorship (2025). 
LOCATION:BM 5202 https://plan.epfl.ch/?room==BM%205202 https://epfl.zoom.u
 s/j/66709471221
STATUS:CONFIRMED
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