Highly Stretchable, Strain Sensing Hydrogel Optical Fibers
The design and fabrication of highly stretchable and tough optical fibers made of optically optimized alginate-polyacrylamide hydrogel materials in a core/clad step-index structure was reported. To characterize the swelling properties, hydrogels were fabricated at different AAm concentrations, and t...
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Wiley Blackwell
2019
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| Online Access: | http://hdl.handle.net/1721.1/120088 https://orcid.org/0000-0002-1187-493X https://orcid.org/0000-0003-1710-9750 https://orcid.org/0000-0001-5387-6186 |
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| author | Guo, Jingjing Liu, Xinyue Jiang, Nan Yetisen, Ali K. Yuk, Hyunwoo Yang, Changxi Khademhosseini, Ali Zhao, Xuanhe Yun, Seok-Hyun |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Guo, Jingjing Liu, Xinyue Jiang, Nan Yetisen, Ali K. Yuk, Hyunwoo Yang, Changxi Khademhosseini, Ali Zhao, Xuanhe Yun, Seok-Hyun |
| author_sort | Guo, Jingjing |
| collection | MIT |
| description | The design and fabrication of highly stretchable and tough optical fibers made of optically optimized alginate-polyacrylamide hydrogel materials in a core/clad step-index structure was reported. To characterize the swelling properties, hydrogels were fabricated at different AAm concentrations, and their weights were measured immediately after crosslinking (pre-swelling state) and later after they have been immersed in Dulbecco's Modified Eagle Medium (DMEM) at 37°C and 5% CO2 for 3 d. The weights of postswelling samples increased by a factor of 1.53 1.62 with respect to the preswelling states almost independent of the AAM concentration. First, the core was fabricated by injecting a Ca2+ containing alginate-polyacrylamide precursor solution into a platinum-cured silicone tube mold with a syringe and curing the solution by UV light irradiation. After polymerization, the core was extracted from the mold by swelling the tube in dichloromethane for 20 min. Next, the clad was formed on the core fiber by a two-step dip-coating method. The ionic cross-linking of alginate chains by Ca2+ results in high viscosity and makes it hard to dip the core and coat a cladding layer on it. Using various tube molds of different inner diameters and varying the clad dipping time, hydrogel fibers with various core and clad diameters were fabricated. The diameter of the crosslinked core when taken out of the mold is identical to the inner diameter of the mold (pre-swelling), but it increases by a factor of 1.5 1.7 at fully swollen states. The strain accuracy was ±1% in short- and long-term measurements in the moist environment, but the readout was sensitive to the variation of swelling state of the hydrogels. Keywords: absorbance spectroscopy; fiber optics; hydrogels; strain sensing |
| first_indexed | 2024-09-23T09:34:44Z |
| format | Article |
| id | mit-1721.1/120088 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:34:44Z |
| publishDate | 2019 |
| publisher | Wiley Blackwell |
| record_format | dspace |
| spelling | mit-1721.1/1200882022-09-26T12:22:52Z Highly Stretchable, Strain Sensing Hydrogel Optical Fibers Guo, Jingjing Liu, Xinyue Jiang, Nan Yetisen, Ali K. Yuk, Hyunwoo Yang, Changxi Khademhosseini, Ali Zhao, Xuanhe Yun, Seok-Hyun Massachusetts Institute of Technology. Department of Mechanical Engineering Liu, Xinyue Yuk, Hyunwoo Zhao, Xuanhe The design and fabrication of highly stretchable and tough optical fibers made of optically optimized alginate-polyacrylamide hydrogel materials in a core/clad step-index structure was reported. To characterize the swelling properties, hydrogels were fabricated at different AAm concentrations, and their weights were measured immediately after crosslinking (pre-swelling state) and later after they have been immersed in Dulbecco's Modified Eagle Medium (DMEM) at 37°C and 5% CO2 for 3 d. The weights of postswelling samples increased by a factor of 1.53 1.62 with respect to the preswelling states almost independent of the AAM concentration. First, the core was fabricated by injecting a Ca2+ containing alginate-polyacrylamide precursor solution into a platinum-cured silicone tube mold with a syringe and curing the solution by UV light irradiation. After polymerization, the core was extracted from the mold by swelling the tube in dichloromethane for 20 min. Next, the clad was formed on the core fiber by a two-step dip-coating method. The ionic cross-linking of alginate chains by Ca2+ results in high viscosity and makes it hard to dip the core and coat a cladding layer on it. Using various tube molds of different inner diameters and varying the clad dipping time, hydrogel fibers with various core and clad diameters were fabricated. The diameter of the crosslinked core when taken out of the mold is identical to the inner diameter of the mold (pre-swelling), but it increases by a factor of 1.5 1.7 at fully swollen states. The strain accuracy was ±1% in short- and long-term measurements in the moist environment, but the readout was sensitive to the variation of swelling state of the hydrogels. Keywords: absorbance spectroscopy; fiber optics; hydrogels; strain sensing National Institutes of Health (U.S.) (Grant R01‐AI123312) National Institutes of Health (U.S.) (Grant P41‐EB015903) National Institutes of Health (U.S.) (Grant R01‐CA192878) United States. Department of Defense (Grant FA9550‐11‐1‐0331) 2019-01-16T17:26:06Z 2019-01-16T17:26:06Z 2016-06 2016-10 2019-01-15T19:10:44Z Article http://purl.org/eprint/type/JournalArticle 0935-9648 1521-4095 http://hdl.handle.net/1721.1/120088 Guo, Jingjing et al. “Highly Stretchable, Strain Sensing Hydrogel Optical Fibers.” Advanced Materials 28, 46 (October 2016): 10244–10249 © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim https://orcid.org/0000-0002-1187-493X https://orcid.org/0000-0003-1710-9750 https://orcid.org/0000-0001-5387-6186 http://dx.doi.org/10.1002/ADMA.201603160 Advanced Materials Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Wiley Blackwell PMC |
| spellingShingle | Guo, Jingjing Liu, Xinyue Jiang, Nan Yetisen, Ali K. Yuk, Hyunwoo Yang, Changxi Khademhosseini, Ali Zhao, Xuanhe Yun, Seok-Hyun Highly Stretchable, Strain Sensing Hydrogel Optical Fibers |
| title | Highly Stretchable, Strain Sensing Hydrogel Optical Fibers |
| title_full | Highly Stretchable, Strain Sensing Hydrogel Optical Fibers |
| title_fullStr | Highly Stretchable, Strain Sensing Hydrogel Optical Fibers |
| title_full_unstemmed | Highly Stretchable, Strain Sensing Hydrogel Optical Fibers |
| title_short | Highly Stretchable, Strain Sensing Hydrogel Optical Fibers |
| title_sort | highly stretchable strain sensing hydrogel optical fibers |
| url | http://hdl.handle.net/1721.1/120088 https://orcid.org/0000-0002-1187-493X https://orcid.org/0000-0003-1710-9750 https://orcid.org/0000-0001-5387-6186 |
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