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Miniaturized multicolor fluorescence imaging system integrated with a PDMS light-guide plate for biomedical investigation

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npj Flexible Electronics 2023年第1期7卷 494-503页

作者： Hyogeun Shin Gun-Wook Yoon Woongsun Choi donghwan lee Hoyun Choi Deok Su Jo Nakwon Choi Jun-Bo Yoon Il-Joo Cho Department of Biomedical Sciences College of MedicineKorea UniversitySeoulRepublic of Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)DeajeonRepublic of Korea Center for Brain Technology Brain Science InstituteKorea Institute of Science and Technology(KIST)SeoulRepublic of Korea Biotechnology Research Institute of CHROMACH Co. LtdSuwonRepublic of Korea School of Chemical Engineering Sungkyunkwan University(SKKU)SuwonRepublic of Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulRepublic of Korea Department of Anatomy College of MedicineKorea UniversitySeoulRepublic of Korea Noul Co. LtdYonginRepublic of Korea

Miniaturized fluorescence imaging systems are promising platforms that overcome the limited use of conventional microscopes in the biomedical ***,there are physical limitations for multicolor fluorescence imaging in existing miniaturized imaging systems because multiple filters have to be integrated into a small ***,we present a miniaturized multicolor fluorescence imaging system integrated with single polydimethylsiloxane(PDMS)light-guide plate(LGP)for multicolor fluorescence *** PDMS LGP allows guiding the transmitted light from the light source only to the fluorescent samples regardless of the wavelength of the light ***,our system is capable of multicolor fluorescence imaging without multiple filters that block the excitation *** demonstrated the usability of our system in the biomedical field by observing green-and red-labeled cells in the *** proposed system can be used in a wide range of applications for studies that require multicolor fluorescence imaging in the biomedical field.

关键词： structure field system

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Highly impermeable and flexible silica encapsulation films synthesized by sol-gel process

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Nano Research 2022年第8期15卷 7476-7483页

作者： Si-Hoon Kim Gyeong-Seok Hwang donghwan Koo Dong-Hyun Seo Ye-Pil Kwon Hansuek lee Hyesung Park Eun-chae Jeon Ju-Young Kim School of Materials Science and Engineering University of UlsanTechno saneop-ro 55beon-gil 12Ulsan 44776Republic of Korea Department of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)UNIST-gil 50Ulsan 44919Republic of Korea Department of Physics Korea Advanced Institute of Science and Technology(KAIST)Daehak-ro 291Deajeon 34141Republic of Korea Graduate School of Semiconductor Materials and Devices Ulsan National Institute of Science and Technology(UNIST)UNIST-gil 50Ulsan 44919Republic of Korea

Silica thin films synthesized sol–gel process are proposed as flexible encapsulation materials.A sol–gel process provides a dense and stable amorphous silica structure,yielding an extremely high elastic deformation limit of 4.9%and extremely low water vapor transmission rate(WVTR)of 2.90×10^(−4)g/(m^(2)∙day)at 60℃and relative humidity of 85%.The WVTR is not degraded by cyclic bending deformations for the bending radius corresponding to a tensile strain of 3.3%in the silica encapsulation film,implying that the silica thin film is robust against the formation of pinhole-type defects by cyclic bending *** organic solar cells encapsulated with the silica films operate without degradation in power conversion efficiency for 50,000 bending cycles for a bending radius of 6 mm.

关键词： silica thin film sol-gel flexible encapsulation mechanical reliability flexible organic solar cell

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