Article
Optics
E. Irani, E. Yazdani, A. Bayat
Summary: The structural and optical properties of high luminescent CdTe/CdS core/shell quantum dots in a stable, aqueous medium have been investigated, revealing wavelength tunability by adjusting the shell thickness. A 10 nm shell thickness for CdS showed higher photoluminescence quantum yield and improved optical nonlinearities compared to CdTe quantum dots and CdTe/CdS core/shell quantum dots with 16 nm thickness.
Article
Chemistry, Multidisciplinary
Mikhail A. Masharin, Alexander S. Berestennikov, Daniele Barettin, Pavel M. Voroshilov, Konstantin S. Ladutenko, Aldo Di Carlo, Sergey V. Makarov
Summary: The integration of core-shell nanoparticles (NPs) in perovskite light-emitting diodes (PeLEDs) through the formation of a metal-oxide-semiconductor (MOS) structure can significantly enhance the efficiency by facilitating charge distribution channels in the active layer, leading to a substantial increase in the radiative recombination rate.
Article
Chemistry, Physical
Yange Yu, Wenzhu Shao, Jing Zhong, Huijian Ye, Li Yang, Liang Zhen
Summary: In this study, core-shell BaTiO3@graphene oxide structures were incorporated into the PVDF matrix to improve energy storage performance of film capacitors. The use of highly insulating GO layer and improved dispersion effectively enhanced breakdown strength and reduced dielectric loss, leading to a significant increase in discharged energy density.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Multidisciplinary Sciences
Mario Kupresak, Xuezhi Zheng, Raj Mittra, Zvonimir Sipus, Guy A. E. Vandenbosch, Victor V. Moshchalkov
Summary: This study investigates the fluorescence of a fluorophore in the presence of a nano core-shell topology using different models. The results show significant differences in fluorescence rates between nonclassical effects and the classical approach, and optimal fluorescence enhancements are found for different parameters.
ADVANCED THEORY AND SIMULATIONS
(2022)
Article
Chemistry, Physical
Yong Wang, Qingzhe Zhang, Yongchen Wang, Lucas Besteiro, Yannan Liu, Haiyan Tan, Zhiming M. Wang, Alexander O. Govorov, Jin Z. Zhang, Jason K. Cooper, Jing Zhao, Guozhu Chen, Mohamed Chaker, Dongling Ma
Summary: The study presents a seed-mediated approach to synthesize ultrastable Cu-based nanoparticles with a thin, completely covered shell, achieving uniform plasmonic Cu-Au core-shell NPs with significantly enhanced chemical stability. The critical role of the external crystalline Au layer in achieving superior stability was identified through in-depth characterizations and analysis. These NPs demonstrate high photothermal efficiency and chemical stability for solar steam generation, offering potential in catalysis, electronics, and optics.
CHEMISTRY OF MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Mingfei Zheng, Guojia Fang
Summary: Metal halide perovskites, as emerging light emitters, have attracted significant attention for their potential applications. PeLEDs based on lead halide perovskites have been extensively studied, with surface-plasmon effect offering a promising approach to enhance their luminescence. Future research on improving efficiency and stability of PeLEDs could lead to advancements in lighting and display applications.
Article
Engineering, Electrical & Electronic
Hamideh Talebi, Farzin Emami
Summary: In this paper, a proposal to incorporate Au@SiO2@Graphene nanoparticles as nano-photonic inclusions in perovskite solar cells is investigated. The results show that this improvement can significantly enhance the absorption rate and power conversion efficiency of the solar cells.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Chuying Ye, Jiawei Jiang, Shaolan Zou, Wenbo Mi, Yin Xiao
Summary: We developed type-II core-shell nanocrystals with a chiral low-dimensional perovskite shell and an achiral 3D MAPbBr(3) core. The core-shell nanocrystals exhibit spin-polarized luminescence and circularly polarized luminescence, which is controlled by the chiral-induced spin selectivity (CISS) effect. The spin-polarized light-emitting diode (spin-LED) also achieved circularly polarized electroluminescence under ambient conditions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Faiza Mustafa, Samia Aslam, Asim Arshad, Ashfaq Ahmad, Sadia Sagar, Sining Yun
Summary: This research presents the successful formation of ZnSe/amino functionalized graphene quantum dots (af-GQDs) with type-II core-shell structures. The structures show potential as a single emissive layer and exhibit tunable photoluminescence emission in the visible region. The introduction of functional groups on af-GQDs enhances their properties and reduces Auger recombination. The study also investigates the emission properties of ZnSe/af-GQDs through steady state and temperature dependent photoluminescence spectroscopy, as well as characterizes the structure using X-ray photon spectroscopy measurements. The findings suggest that ZnSe/af-GQDs have great potential for LEDs and display devices.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Multidisciplinary
Aaron Bayles, Shu Tian, Jingyi Zhou, Lin Yuan, Yigao Yuan, Christian R. Jacobson, Corbin Farr, Ming Zhang, Dayne F. Swearer, David Solti, Minghe Lou, Henry O. Everitt, Peter Nordlander, Naomi J. Halas
Summary: This study introduces Al@TiO2 core-shell nanoparticles as active photocatalysts for hot electron-mediated H-2 dissociation reaction and hot hole-mediated methanol dehydration. The research indicates that the photocatalytic mechanism involves plasmonic hot carrier generation and subsequent transfer into the TiO2 layer. The Al@TiO2 antenna-reactor offers an earth-abundant solution for the future design of visible-light-driven plasmonic photocatalysts.
Article
Chemistry, Multidisciplinary
Jae-Young Hyun, Ki-Hyun Kim, Jae-Pil Kim, Won-Bin Im, Kadathala Linganna, Ju-Hyeon Choi
Summary: Y2O3:RE3+ (RE = Eu, Tb, and Dy) core and core-shell nanophosphors were successfully fabricated using the molten salt method and sol-gel processes. The structural and luminescence characteristics of the nanophosphors were found to be influenced by the annealing temperature, with Eu3+-doped nanoparticles showing significant improvement in emission intensity and quantum yield at higher annealing temperatures. No significant variations were observed for Tb3+ and Dy3+ doped nanophosphors.
Article
Chemistry, Multidisciplinary
Bohan Zhang, Bingzhe Wang, Elena Ushakova, Bingchen He, Guichuan Xing, Zikang Tang, Andrey L. Rogach, Songnan Qu
Summary: The luminescence mechanisms of carbon dots were investigated, revealing different emissions from different optical centers. The broad red emission was found to be sensitive to solvents, temperature, and UV-IR.
Article
Chemistry, Multidisciplinary
Yue-Jiao Zhang, Petar M. Radjenovic, Xiao-Shun Zhou, Hua Zhang, Jian-Lin Yao, Jian-Feng Li
Summary: Plasmonic core-shell nanostructures have highly tunable optical properties, and when excited by an incident laser, generate strong and highly localized electromagnetic fields that significantly enhance excitation and/or radiation processes to amplify signals and improve spectroscopic sensitivity.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Huiqin An, Zhaotao Lv, Kun Zhang, Congying Deng, Hong Wang, Zongwei Xu, Meiri Wang, Zhen Yin
Summary: The study successfully enhanced the hydrogen production efficiency during the water splitting process by constructing the Au@Pt/ZIS photocatalyst, with experimental results showing its remarkable hydrogen production capability compared to ZIS.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Kai Guo, Keya Zhou, Wei Liu, Zhongyi Guo
Summary: In this study, plasmonic toroidal dipole resonance was observed in core-shell nanodisks, leading to enhanced second harmonic generation (SHG). The frequency of this SHG is dependent on the refractive index of the dielectric core, with a red shift as the index increases. The findings could potentially contribute to the development of nonlinear nanooptics and their practical applications.
IEEE PHOTONICS JOURNAL
(2021)
Article
Chemistry, Physical
Mu Xiao, Yalong Jiao, Bin Luo, Songcan Wang, Peng Chen, Miaoqiang Lyu, Aijun Du, Lianzhou Wang
Summary: Coupling graphitic carbon nitride (CN) with carbonaceous materials enhances photocatalytic performance by improving exciton dissociation and charge transfer. The enhanced light absorption from carbon has little contribution to H-2 evolution activity.
Article
Materials Science, Multidisciplinary
Saskia Fiedler, Cuong Ton-That, Matthew R. R. Phillips
Summary: Low-temperature hydrothermal growth is a popular method for fabricating ZnO nanorods (NRs) with enhanced functionality. This study examines the influence of growth time, temperature, and seed layer on the dimensions and angular distribution of ZnO NRs. The results show that growth time and temperature do not have a controllable impact on NR diameter and length, while the deposition method and size of pre-growth deposited ZnO seeds affect diameter and NR angular alignment. The advantages of using crisscross-aligned NRs over planar ZnO for enhancing ZnO excitonic emission are demonstrated.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yongtao Liu, Jiajia Zhou, Shihui Wen, Fan Wang, Hongjun Wu, Qian Chen, Chao Zuo, Dayong Jin
Summary: Multiphoton upconversion super-resolution microscopy (MPUM) is a promising imaging modality that achieves increased resolution and penetration depth through the use of nonlinear near-infrared emission light. However, high excitation power is required for emission saturation, leading to increased phototoxicity. In this study, the authors propose a simple on-chip mirror design that allows for nonlinear saturation emission under low excitation power. This method significantly decreases the excitation power and enables a lateral resolution of around 35 nm in imaging single nanoparticles on-chip. The findings offer a straightforward solution for enhancing super-resolution imaging using pre-designed on-chip devices.
Article
Biochemical Research Methods
Shuang Fu, Wei Shi, Tingdan Luo, Yingchuan He, Lulu Zhou, Jie Yang, Zhichao Yang, Jiadong Liu, Xiaotian Liu, Zhiyong Guo, Chengyu Yang, Chao Liu, Zhen-li Huang, Jonas Ries, Mingjie Zhang, Peng Xi, Dayong Jin, Yiming Li
Summary: We propose a deep-learning method for precise localization of spatially variant point emitters, covering the full chip of a modern sCMOS camera. By using a graphic processing unit-based vectorial point spread function fitter, we accurately model the spatially variant PSF of a high numerical aperture objective in the entire field of view. Combined with deformable mirror-based optimal PSF engineering, we demonstrate high-accuracy three-dimensional single-molecule localization microscopy over a large volume, enabling imaging of mitochondria and nuclear pore complexes in entire cells without hardware scanning, with a 100-fold increase in throughput compared to existing techniques.
Article
Quantum Science & Technology
Ali Al-Juboori, Helen Zhi Jie Zeng, Minh Anh Phan Nguyen, Xiaoyu Ai, Arne Laucht, Alexander Solntsev, Milos Toth, Robert Malaney, Igor Aharonovich
Summary: This study demonstrates a discrete-variable quantum key distribution system using a bright single photon source in hexagonal-boron nitride, operating at room temperature. With an easily interchangeable photon source system, keys with a length of one million bits, and a secret key of approximately 70000 bits, at a quantum bit error rate of 6%, with ε-security of 10(-10) are generated. This is the first proof of concept finite-key BB84 QKD system realized with hBN defects.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Chemistry, Analytical
Gungun Lin, Jawairia Umar Khan, Sareh Zhand, Yuan Liu, Dayong Jin
Summary: Researchers have developed a modular hydrogel membrane carrier with composite DNAzymes for rapid and highly sensitive detection of pathogenic bacteria gene target analytes. By incorporating composite DNAzymes into a polymer network, the researchers were able to release the DNAzymes to cleave RNA reporter probes and generate fluorescence, achieving quantitative assay performance. The work represents a significant advancement in the development of a versatile pathogenic bacteria testing platform. Overall, the importance of this research is 9 out of 10.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Fatima Matar, Ying-Li Shi, Francis Chi-Chung Ling, Amar Salih, Curtis P. Irvine, Sujeewa De Silva, Matthew R. Phillips, Cuong Ton-That
Summary: This study fabricates monoclinic phase (BixGa1-x)2O3 ternary alloys on c-plane sapphire via magnetron co-sputtering and investigates their electrical properties. It is found that alloying Ga2O3 with Bi2O3 decreases the bandgap and lowers the self-trapping energy for holes. The conductivity of (Bi0.04Ga0.96)2O3 film is lower than that of undoped Ga2O3, likely due to the compensation of shallow donors by acceptors activated by Bi2O3-induced upward shift of the valence band edge.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Shui-Jing Tang, Mingjie Zhang, Jialve Sun, Jia-Wei Meng, Xiao Xiong, Qihuang Gong, Dayong Jin, Qi-Fan Yang, Yun-Feng Xiao
Summary: Researchers demonstrate real-time measurement of natural vibrations of single mesoscopic particles using photoacoustic excitation and acoustic coupling to an optical microresonator for readout. This technology extends the reach of vibrational spectroscopy and is applied for biomechanical fingerprinting of microorganisms at the single-cell level.
Article
Multidisciplinary Sciences
Chao Mi, Xun Zhang, Chengyu Yang, Jianqun Wu, Xinxin Chen, Chenguang Ma, Sitong Wu, Zhichao Yang, Pengzhen Qiao, Yang Liu, Weijie Wu, Zhiyong Guo, Jiayan Liao, Jiajia Zhou, Ming Guan, Chao Liang, Chao Liu, Dayong Jin
Summary: Researchers have developed a high-resolution near-infrared-II (NIR-II) imaging method for non-invasive diagnosis of skeletal disorders. By using lanthanide-doped nanocrystals, they were able to passively target the bone marrow and achieve effective bone imaging for over two months. The NIR-II imaging technique showed comparable results to X-ray imaging and could also diagnose early onset inflammation in rheumatoid arthritis.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Gungun Lin, Jawairia Umar Khan, Sareh Zhand, Yuan Liu, Dayong Jin
Summary: This study presents a modular hydrogel membrane carrier incorporated with composite DNAzymes for rapid and highly sensitive detection of pathogenic bacteria gene targets. The composite DNAzymes are incorporated into polyethylene glycol diacrylate polymer networks, allowing for the cleavage of RNA substrate components to generate fluorescence. By modulating the morphology, composition, and microporous structures of the DNAzyme carriers, quantitative assay performance is achieved. This work represents an important advancement in the development of a generic, isothermal, and protein enzyme-free pathogenic bacteria testing platform technology.
ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Kee Suk Hong, Hee-Jin Lim, Dong Hoon Lee, In-Ho Bae, Kwang-Yong Jeong, Christoph Becher, Sejeong Kim, Igor Aharonovich
Summary: Single-photon sources based on single emitters are highly interesting for various applications and have been realized using different materials. Common factors related to relaxation times of internal states indirectly affect the photon number stability. GaN emitters demonstrate higher stability due to faster relaxation times compared to hBN emitters, but hBN emitters have higher photon generation rates. Repeatable radiant flux measurements of a bright hBN single-photon emitter for a wide range of fluxes have been demonstrated.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Biomedical
Fu Zou, Yuanhua Liu, Zelyu Chen, Zhanghao Karl, Dayong Jin
Summary: This paper introduces a lightweight network FRUNet based on U-Net, which combines the advantages of Fourier Channel Attention (FCA Block) and Residual unit to improve image segmentation accuracy. FCA Block automatically assigns the weight of learned frequency information to the spatial domain, paying more attention to the precise high-frequency information of diverse biomedical images. The combination of FCA and U-Net is studied, with the skip connection of U-Net fusing encoder information with the decoder. Extensive experimental results show that FRUNet outperforms other advanced medical image segmentation methods in terms of network parameters and accuracy, particularly excelling in pathological section segmentation of nuclei and glands.
IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE
(2023)
Article
Chemistry, Multidisciplinary
Zayakhuu Gerelkhuu, Haribalan Perumalsamy, Mahnaz Maddahfar, Dayong Jin, Jaewoo Song, Tae Hyun Yoon
Summary: In order to promote the use of lanthanide-doped upconversion nanoparticles (UCNPs) in various biomedical applications, it is important to assess their toxicity comprehensively, including their cellular association and interactions with human immune cells. Recent advancements in high-throughput single-cell technologies have enabled us to gain a better understanding of the complex interactions between nanoparticles and human immune cells. In this study, we used a single-cell based mass cytometry technique to investigate the heterogeneous interactions of Yb3+/Er3+-doped NaYF4 UCNPs with human peripheral blood mononuclear cells (hPBMCs). The study demonstrated a new innovative approach to understanding the heterogeneous interactions of conventional nanomaterials with complex human immune systems, which will facilitate the safe implementation of nanomaterials in biomedical applications.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Chemistry, Multidisciplinary
Dongxu He, Peng Chen, Mengmeng Hao, Miaoqiang Lyu, Zhiliang Wang, Shanshan Ding, Tongen Lin, Chengxi Zhang, Xin Wu, Evan Moore, Julian A. Steele, Ebinazar B. Namdas, Yang Bai, Lianzhou Wang
Summary: This study discovered sustainable redox reactions that enable self-healing Sn-Pb perovskites, resulting in improved power conversion efficiency and excellent device lifespan.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Ivan Zhigulin, Karin Yamamura, Viktor Ivady, Angus Gale, Jake Horder, Charlene J. Lobo, Mehran Kianinia, Milos Toth, Igor Aharonovich
Summary: This study presents a detailed photophysical analysis of blue-emitting hexagonal boron nitride single emitters and reveals their potential level structure. The results are important for understanding blue quantum emitters in hBN as potential sources for scalable quantum photonic applications.
MATERIALS FOR QUANTUM TECHNOLOGY
(2023)
