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Woo HJ, Han J, Ji S, Shin BG, Park SH, Lee SG, Lee CW, Hwang E, Kim DS, Choi S, Jeong MS, Yi GR, Kim J, Song YJ. Probing Inherent Optical Anisotropy in Substrates via Direct Nanoimaging of Mie Scattering. ACS NANO 2024; 18:12333-12340. [PMID: 38688009 DOI: 10.1021/acsnano.4c01336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
In this study, we investigated the optical properties of a transition metal dichalcogenide (TMD) substrate via Mie-scattering-induced surface analysis (MISA). Employing near-field optical microscopy and finite-difference time-domain (FDTD) simulations, we systemically prove and directly visualize the Mie scattering of superspherical gold nanoparticles (s-AuNPs) at the nanoscale. Molybdenum disulfide substrates exhibited optical isotropy, while rhenium disulfide (ReS2) substrates showed anisotropic behavior attributed to the interaction with incident light's electric field. Our study revealed substantial anisotropic trends in Mie scattering, particularly in the near-infrared energy range, with ReS2 exhibiting more pronounced spectral and angular responses in satellite peaks. Our results emphasize the application of Mie scattering, exploring the optical properties of substrates and contributing to a deeper understanding of nanoscale light-matter interactions.
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Affiliation(s)
- Hwi Je Woo
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jaewon Han
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sangmin Ji
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Bong Gyu Shin
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Nano Science and Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seong Hun Park
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Sung-Gyu Lee
- Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Chang-Won Lee
- Institute of Advanced Optics and Photonics, Department of Applied Optics, School of Basic Sciences, Hanbat National University, Daejeon 34158, Republic of Korea
| | - Euyheon Hwang
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Nano Science and Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Nano Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Deok-Soo Kim
- Advanced Facility Center for Quantum Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Soobong Choi
- Department of Physics, Incheon National University, Incheon 22012, Republic of Korea
- Intelligent Sensor Convergence Research Center (ISCRC), Incheon National University, Incheon 22012, Republic of Korea
| | - Mun Seok Jeong
- Department of Physics, Hanyang University (HYU), Seoul 04763, Republic of Korea
| | - Gi-Ra Yi
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Junki Kim
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Nano Science and Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Nano Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Young Jae Song
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Nano Science and Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Nano Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Yim MS, Hwang YS, Bang JK, Jung DW, Kim JM, Yi GR, Lee G, Ryu EK. Morphologically homogeneous, pH-responsive gold nanoparticles for non-invasive imaging of HeLa cancer. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2021; 34:102394. [PMID: 33857687 DOI: 10.1016/j.nano.2021.102394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/15/2021] [Accepted: 03/22/2021] [Indexed: 01/02/2023]
Abstract
Gold nanoparticles (AuNPs) have been widely used as nanocarriers in drug delivery to improve the efficiency of chemotherapy treatment and enhance early disease detection. The advantages of AuNPs include their excellent biocompatibility, easy modification and functionalization, facile synthesis, low toxicity, and controllable particle size. This study aimed to synthesize a conjugated citraconic anhydride link between morphologically homogeneous AuNPs and doxorubicin (DOX) (DOX-AuNP). The carrier was radiolabeled for tumor diagnosis using positron emission tomography (PET). The systemically designed DOX-AuNP was cleaved at the citraconic anhydride linker site under the mild acidic conditions of a cancer cell, thereby releasing DOX. Subsequently, the AuNPs aggregated via electrostatic attraction. HeLa cancer cells exhibited a high uptake of the radiolabeled DOX-AuNP. Moreover, PET tumor images were obtained using radiolabeled DOX-AuNP in cancer xenograft mouse models. Therefore, DOX-AuNP is expected to provide a valuable insight into the use of radioligands to detect tumors using PET.
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Affiliation(s)
- Min Su Yim
- Division of Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
| | - Yeon Sil Hwang
- Division of Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
| | - Jeong Kyu Bang
- Division of Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea; Bio-Analytical Science, University of Science and Technology, Daejeon, Republic of Korea
| | - Dae-Woong Jung
- Korea Basic Science Institute, Daejeon, Republic of Korea; Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jun Min Kim
- Korea Basic Science Institute, Daejeon, Republic of Korea; Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Gi-Ra Yi
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Gaehang Lee
- Korea Basic Science Institute, Daejeon, Republic of Korea.
| | - Eun Kyoung Ryu
- Division of Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea; Bio-Analytical Science, University of Science and Technology, Daejeon, Republic of Korea.
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