Article
Materials Science, Multidisciplinary
Zhongyuan Li, Jinlong He, Ashwanth Subramanian, Nikhil Tiwale, Keith J. Dusoe, Chang -Yong Nam, Ying Li, Seok-Woo Lee
Summary: In this study, core-shell SU-8 nanocomposites fabricated via vapor-phase infiltration of nanoscale amorphous aluminum oxides showed an ultrahigh modulus of resilience much higher than most high-strength materials. The unique microstructural features, including the low aspect ratio of aluminum oxide nanoparticles, the larger particle size compared to the free volume size, and the thin interconnecting links within the particles, contribute to the exceptional combination of low specific Young's modulus and high specific yield strength, resulting in a specific modulus of resilience about ten times higher than materials with similar yield strength. The vapor-phase infiltration method demonstrated excellent capabilities in producing polymer nanocomposites that can absorb and release large amounts of elastic strain energy.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Corban G. E. Murphey, Jin-Sung Park, Seokhyoung Kim, James F. Cahoon
Summary: This study combines noble-metal plasmonic nanostructures with high-index dielectric materials to enhance resonances, and demonstrates the importance of bottom-up synthetic methods by fabricating Si/Au core/shell nanowires.
Article
Chemistry, Multidisciplinary
Yong Sun, Ziheng Lin, Fei Tian, Bo Sun, Xiaobin Zou, Chengxin Wang
Summary: This study demonstrates the design of silicon-based Mn5Si3@SiO2 nanocables through structure engineering, exhibiting diverse mechanical behaviors under different external conditions, including simplex elasticity, plasticity, and viscoelasticity. These tunable performances originate from the synergetic effects between the core and shell components, optimizing internal stress distribution and the dislocation evolution mechanism. The findings are significant for nanowire mechanical design and the expansion of strain-regulated three-dimensional multifunctional nanosystems.
Article
Materials Science, Multidisciplinary
Jijie Huang, Xin Li Phuah, Luke Mitchell McClintock, Prashant Padmanabhan, K. S. N. Vikrant, Han Wang, Di Zhang, Haohan Wang, Ping Lu, Xingyao Gao, Xing Sun, Xiaoshan Xu, R. Edwin Garcia, Hou-Tong Chen, Xinghang Zhang, Haiyan Wang
Summary: The study designs a structure that embeds alloy nanopillars into a BTO matrix, forming vertically aligned nanocomposites with excellent epitaxial quality and interesting properties like high magnetic anisotropy and magneto-optical coupling response.
Article
Chemistry, Multidisciplinary
Bastian Haehnle, Philipp A. Schuster, Lisa Chen, Alexander J. C. Kuehne
Summary: A synthetic toolbox has been developed to create monodisperse core-shell and core-shell-shell particles composed entirely of different types of conjugated polymers. Seeded and fed-batch dispersion polymerizations based on Suzuki-Miyaura-type cross-coupling allow precise control over the interface between conjugated polymer phases, facilitating control over energy transfer phenomena. This new approach offers synthetic freedom for fine-tuning the optical properties of CPP, potentially enabling the synthesis of individual white light-emitting particles.
Article
Nanoscience & Nanotechnology
Qi-Bo Wang, Qin-Qin Xu, Ming-Zhe Yang, Zhong-Shuai Wu, Xiao-Chuan Xia, Jian-Zhong Yin, Zhen-Hua Han
Summary: A novel pressure-induced supercritical phase nucleation method is proposed for synthesizing monolayer MoS2 films, without the need for promoters. The method avoids contamination from heterogeneous promoters seen in existing techniques. The size of MoS2 crystals on the substrate is influenced by the wetting area of precursor droplets, while the formation of continuous films is controlled by the coalescence of droplets. The nucleation site density can be adjusted by the supersaturation of the supercritical fluid solution, providing new possibilities for controlled growth of MoS2 and other two-dimensional materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yanqing Hu, Shijie Yu, Xinyi Deng, Jiaqiang Zhou, Rui Zhang, Qiyue Shao
Summary: This research discovers the opposite temperature-dependence of upconversion luminescence (UCL) in active-shell and inert-shell nanocrystals. The UCL of active-shell nanocrystals is enhanced at elevated temperature, while the UCL of inert-shell nanocrystals declines. This phenomenon is mainly attributed to the gradually attenuated surface quenching effect induced by H2O molecules.
Article
Chemistry, Multidisciplinary
Hongda Lu, Shi-Yang Tang, Jiayuan Zhu, Xumin Huang, Helen Forgham, Xiangke Li, Ao Shen, Guolin Yun, Jinming Hu, Shiwu Zhang, Thomas P. Davis, Weihua Li, Ruirui Qiao
Summary: By nanoengineering liquid metal nanoparticles and using galvanic replacement, diverse core-shell nanostructures including LM@Au, Au@Ga oxide, and hollow Ga oxide nanoparticles are successfully fabricated. LM@Au exhibits exceptional photothermal performance with a conversion efficiency of 65.9%, which is five times that of gold nanoparticles. The high photothermal conversion efficiency and biocompatibility of LM@Au show promising applications in hyperthermia cancer therapy.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Polymer Science
Yanze Liu, Shenghua Yang, Biao Zhao, Jianping Deng
Summary: We report a novel and facile strategy to achieve monodispersed polymer-based circularly polarized luminescent (CPL) micro/nanomaterials. The core/shell particles obtained using maleic anhydride copolymer as core and chiral helical polyacetylene as shell exhibit intense blue-emitting nonconventional fluorescence with both aggregation-induced emission and concentration-enhanced emission performance. Furthermore, these particles show excitation-dependent CPL emission behavior, with the highest luminescence dissymmetry factor of 5 x 10-3. This work provides a versatile platform for constructing polymeric CPL nano/microarchitectures.
Article
Optics
Xingyu Shen, Ananth Kamath, Philippe Guyot-Sionnest
Summary: Intraband electroluminescence from n-doped core-shell HgSe-CdSe colloidal quantum dots is observed around the wavelength of 5μm. The measured EL quantum efficiency is 4.5% at the injection current of 2 A cm(-2), benefiting from the cascade effect. Efficient infrared light sources are needed for machine vision and molecular sensing, and the application of colloidal quantum dots in the infrared region is promising. However, mid-infrared devices currently have low quantum efficiencies and rely exclusively on interband transitions. In this study, we demonstrate efficient intraband electroluminescence at 5μm using core-shell HgSe-CdSe colloidal quantum dots, achieving a quantum efficiency comparable to commercial epitaxial cascade quantum well light-emitting diodes.
Article
Chemistry, Physical
Jiajia Ning, Yuan Xiong, Stephen Kershaw, Andrey L. Rogach
Summary: The most efficient way to improve the stability and optical properties of nanocrystals is to grow shell around their cores. Different growth modes of the ZnS shell on ZnSe nanorods were observed depending on the crystal structure of the ZnSe core, leading to differences in photoluminescence quantum yield.
CHEMISTRY OF MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Liangfei Duan, Yumin Zhang, Jianhong Zhao, Jin Zhang, Qian Li, Qingjie Lu, Li Fu, Jing Liu, Qingju Liu
Summary: The surface of liquid metals can be transformed into a fluorescent semiconductor layer through thermal oxidation, giving them fluorescent properties. This technology has promising applications in flexible lighting and displays, anticounterfeiting measures, sensing, and chameleon robots.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Xinxin Guo, Cunyu Lu, Yameng Li, Chendong Zhang, Xuhai Pan, Min Hua, Lijing Zhang, Juncheng Jiang
Summary: A solid-liquid composite powder with core-shell structure is successfully prepared under theoretical guidance. The factors affecting the preparation process include stirring speed, solid-liquid mass ratio, stirring time, and additive concentration. Experimental results show that the core-shell powder containing NH4H2PO4 (WS-2) exhibits better diesel flame suppression performance compared to commercial dry powder (CDP) and common core-shell powder (WS-1). Furthermore, WS-2 also demonstrates the highest degree of temperature drop, being 21.14% and 39.82% higher than CDP and WS-1, respectively. The study reveals that WS-2 possesses multiple inhibitory effects such as isolation, cooling, asphyxiation, and chemical suppression, indicating its excellent fire extinguishing performance. This research is of great significance for determining technological parameters and applying core-shell powders.
Article
Chemistry, Inorganic & Nuclear
Shiliang Wang, Daitao Kuang, Lianwen Deng, Weijie Duan, Gang Xiao, Xiaogang Sun, Chuansheng Chen
Summary: This study investigates the microwave absorption properties of Cu-C core-shell nanoparticles and their derivatives. It is found that the C shells significantly improve the polarization loss, while the Cu cores have negligible influences on the conduction loss. The interface between C shells and Cu cores tunes the conduction loss and polarization loss to achieve optimal microwave absorption performances.
INORGANIC CHEMISTRY
(2023)
Article
Engineering, Environmental
Muhammad Rashad, Hugh Geaney
Summary: This study demonstrates the growth of silicon nanowires (Si NWs) using magnesium (Mg) as a catalyst material. The Si NWs grown with Mg show high mass loadings and tight diameter control. They exhibit high initial coulombic efficiencies and high gravimetric and areal capacities as anodes for lithium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Y. C. Liao, T. H. Li, P. H. Tsai, J. S. C. Jang, K. C. Hsieh, C. Y. Chen, J. C. Huang, H. J. Wu, Y. C. Lo, C. W. Huang, I. Y. Tsao
Article
Chemistry, Physical
Y. C. Liao, W. T. Ye, P. S. Chen, P. H. Tsai, J. S. C. Jang, K. C. Hsieh, C. Y. Chen, J. C. Huang, H. J. Wu, Y. C. Lo, C. W. Huang, I. Y. Tsao
Summary: By utilizing the CALPHAD method, a series of Ti60(Al)x(VCrNb)40-x medium-entropy alloys were designed and produced, showing a decrease in density with increasing Al concentration and the formation of nanosized B2 phase at higher Al concentrations. The alloys with BCC structure exhibited excellent compressive ductility, but the tensile properties were influenced by different Al concentrations, resulting in a decrease in plastic strain with increasing Al concentration.
Article
Materials Science, Coatings & Films
H. K. Lin, J. J. Wang, W. H. Lu, W. S. Chuang, C. Y. Chen, H. S. Chou, J. C. Huang
Summary: The study demonstrates that AgCuAl equimolar complex concentrated alloy thin films can form nanoparticles through dewetting with a NIR pulsed-laser system. These nanoparticles mainly consist of Ag and Cu, exhibit local surface plasmon resonance peaks, and their size and wavelength can be controlled by adjusting the energy density.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Po-Sung Chen, Yu-Chin Liao, Yen-Ting Lin, Pei-Hua Tsai, Jason S. C. Jang, Ker-Chang Hsieh, Chih-Yen Chen, Jacob C. Huang, Hsin-Jay Wu, I-Yu Tsao
Summary: Most high-entropy alloys and medium-entropy alloys exhibit excellent mechanical properties. In this study, lightweight nonequiatomic Al-50-Ti-Cr-Mn-V MEAs with a dual phase structure were prepared, showing outstanding compressive strength and ductility. Through alloy composition optimization and heat treatment, a significant improvement in compressive properties was achieved, making these MEAs promising for future energy or transportation applications.
Article
Chemistry, Physical
Osama Nasr, You-Yi Lin, Yi-Syun Chou, Chang-Wei Huang, Wen-Shuo Chuang, Sheng-Wei Lee, Chih-Yen Chen
Summary: The study developed CoTiO3@Ag nanofibers annealed at different temperatures for SERS detection, showing maximum effect achieved at 700 degrees C with good reusability and stability. Additionally, assembling nanofibers into helically bundled structures significantly enhanced the SERS effect.
APPLIED SURFACE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Mengjiao Li, Hong-Wei Lu, Shu-Wei Wang, Rei-Ping Li, Jiann-Yeu Chen, Wen-Shuo Chuang, Feng-Shou Yang, Yen-Fu Lin, Chih-Yen Chen, Ying-Chih Lai
Summary: This article introduces the use of topological insulators to enrich the current triboelectric family of materials and sensing technologies. The topological insulator-based triboelectric nanogenerator shows promising potential for self-powered wearable electronics and scalable sensing technologies.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Osama Nasr, Jian-Ru Jiang, Wen-Shuo Chuang, Sheng-Wei Lee, Chih-Yen Chen
Summary: This article demonstrates the growth of high-quality Ag/Cu2S nanosheets through the galvanic reduction method, which are efficiently applied for surface-enhanced Raman scattering and photocatalytic degradation applications. The Ag/Cu2S nanosheets show higher sensitivity in detecting organic pollutants and degrading dyes compared to undecorated Cu2S nanosheets. Reproducibility experiments indicate their potential for dual functionality as highly sensitive SERS probes and stable photocatalysts.
Article
Biochemistry & Molecular Biology
Wen-Jyun Wang, Chung-Dann Kan, Chih-Yen Chen, Yi-Yao Meng, Jieh-Neng Wang, Wei-Ling Chen, Chia-Hsiang Chen, Wei-Peng Li
Summary: Synthetic PLGA MVs with biogenic MV-mimic vesicular structure were prepared successfully for drug delivery applications, showing great potential in delivering hydrophobic compounds like IC to cells. The in vitro results demonstrated that IC-loaded PLGA MVs significantly decreased the cell viability of A549 lung carcinoma cells, indicating their excellent potential as a drug delivery platform.
Article
Chemistry, Physical
Y. C. Liao, P. S. Chen, P. H. Tsai, J. S. C. Jang, K. C. Hsieh, H. W. Chang, C. Y. Chen, J. C. Huang, H. J. Wu, Y. C. Lo, C. W. Huang, I. Y. Tsao
Summary: In this study, the Ti-65 alloy was processed through a series of thermomechanical treatments, which resulted in significant grain refinement and enhancement of tensile strength, demonstrating good strength-ductility synergy.
Article
Chemistry, Multidisciplinary
Rei-Ping Li, Shiang-Yi Lu, Yen-Jen Lin, Chih-Yen Chen
Summary: 2D bismuth telluride nanosheets were successfully synthesized and characterized using environmental SEM and UV-Vis-NIR spectroscopy, leading to insights for future optimization of materials fabrication and applications.
Article
Chemistry, Physical
Po-Sung Chen, Sheng-Jia Shiu, Pei-Hua Tsai, Yu-Chin Liao, Jason Shian-Ching Jang, Hsin-Jay Wu, Shou-Yi Chang, Chih-Yen Chen, I-Yu Tsao
Summary: This study explores the use of lightweight nonequiatomic MEAs with Zr additions to achieve high strength and high ductility properties. The Ti-65(AlCrNbV)(28)Zr-7 MEAs demonstrated an optimum combination of mechanical properties after undergoing hot rolling, cold rolling, and rapid annealing. With their high specific yield strength and ductility, these MEAs have considerable potential for energy and transportation applications.
Article
Nanoscience & Nanotechnology
Chih-Yen Chen, Chia-Chieh Tseng
Summary: Unlike most composite nanostructured catalysts, Ga2S3 semiconductors and g-C3N4 heterojunction photocatalysts exhibit high efficiency in removing methylene blue due to stable absorption and physical properties. Ga2S3 nanosheets have 40% higher activities than P25-TiO2 catalysts. Ga2S3/g-C3N4 heterostructures show significantly improved light absorption and photocatalytic efficiency compared to Ga2S3 and g-C3N4 alone. The study also investigated the synthesis process parameters and evaluated the photocatalytic mechanism and oxidation species involved.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Feng-Shuo Li, Yue-Wen Fang, Yi-Ting Wu, Shu-Wei Wu, Sheng-Zhu Ho, Chih-Yen Chen, Ching-Yu Chiang, Yi-Chun Chen, Heng-Jui Liu
Summary: A efficient electrocatalytic electrode made of a BiFeO(3)/nickel foam heterostructure is reported in this study, which exhibits a smaller overpotential and higher current density than the blank nickel foam electrode. When in contact with an alkaline solution, the bond between hydroxyls and the BiFeO3 surface induces a large area of upward self-polarization, reducing the adsorption energy of subsequent adsorbates and promoting oxygen and hydrogen evolution reactions.
Article
Multidisciplinary Sciences
Gang Qiu, Hung-Yu Yang, Lunhui Hu, Huairuo Zhang, Chih-Yen Chen, Yanfeng Lyu, Christopher Eckberg, Peng Deng, Sergiy Krylyuk, Albert V. Davydov, Ruixing Zhang, Kang L. Wang
Summary: In this study, van der Waals Josephson junctions made with iron-based superconductor Fe(Te,Se) were fabricated, and the global device-level transport signatures of interfacial ferromagnetism emerging with superconducting states were reported for the first time. Additionally, a stochastic field-free superconducting diode effect was observed, confirming the spontaneous time-reversal symmetry breaking.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Yu-Chen Liu, Meng-Xun Xie, Yu-Huai Li, Sheng-Zhu Ho, Chin-Han Huang, Min-Yuan Huang, Chun-Wei Huang, Yi Chou, Chih-Yen Chen, Yi-Chia Chou, Yi-Chun Chen, Heng-Jui Liu, Jan-Chi Yang
Summary: Thin film engineering allows researchers to modify physical properties, phase stability, and domain architectures in functional materials. This study reveals a naturally formed superdomain architecture in tetragonal Pb(Zr,Ti)O-3 epitaxial film, showing unique domain connections and piezoresponse characteristics.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
