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. Author manuscript; available in PMC: 2019 Aug 21.
Published in final edited form as: Adv Funct Mater. 2018 Apr 14;28(24):1706635. doi: 10.1002/adfm.201706635

Figure 7.

Figure 7.

Optical waveguides made from biodegradable polymers. (a) A biodegradable PGA surgical suture thread delivering light into a tissue.[66] (b) Side-view and cross-section of a POMC-POC optical fiber.[67] (c) Cross-section of a multifunctional biodegradable cellulose optical fiber with a central microchannel and a ring core for guiding light.[68a] (d) Comb-shape PLLA waveguides designed to deliver photochemical activation light into a thick skin tissue.[4b] (e) Time-lapse images showing the biodegradation of a PLA optical waveguide implanted in a subcutaneous region of a mouse.[72] (f) A PLA microneedle array developed for percutaneous light delivery.[69]