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. Author manuscript; available in PMC: 2021 Aug 1.
Published in final edited form as: Adv Healthc Mater. 2020 Jun 11;9(15):e2000156. doi: 10.1002/adhm.202000156

Figure 9. Two-wavelength photoinitiation and photoinhibition patterning.

Figure 9.

A) Setup of the printer with the UV (365nm) inhibition light and the visible initiation light. B) Structures CQ (photoinitiator), EDAB (co-initiator), and o-Cl-HABI (photoinhibitor). C) The absorbance spectrum of CQ and o-Cl-HABI. D) The inhibition height with different intensity ratios (the incident irradiation wavelengths (IUV,0/Iblue,0)) and resin absorbance (huv). E) Simultaneous photoinitiation and photoinhibition for printing front-side variable structures, using intensity-modulated inhibition light and constant initiation light. Reproduced with permission.[74]