Article
Chemistry, Multidisciplinary
Huiqin Zhou, Anlin Feng, Shanshan Ji, Yidong Hu, Qingyang Li
Summary: A ZnO nanowire array was synthesized within 10 minutes for the first time through electrodeposition of a Zn nanocrystal coating followed by a microwave hydrothermal treatment, offering the cheapest and fastest route from aqueous solutions so far. This simple, economical, efficient, flexible, and scalable method has promising prospects for industrial applications.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Ivan Shtepliuk, Volodymyr Khranovskyy, Arsenii Ievtushenko, Rositsa Yakimova
Summary: This study systematically investigated the morphology and optical properties of ZnO layers grown on SiC substrates with various off-cut angles, highlighting the benefits of an 8-degree off-cut angle for step-flow growth and improved growth quality. Temperature-dependent photoluminescence measurements revealed a strong dependence of excitonic emission on off-cut angles, indicating a correlation between structural and optical properties of ZnO on vicinal surfaces.
Article
Nanoscience & Nanotechnology
Haitao Wang, Zhongyu Hou, Changlin Li, Bo Wang
Summary: Research in plasma actuation is focusing on enhancing thrust density for aerodynamic flow control. A new method involving nanoscaled structures and voltage/frequency tuning has been proposed and experimentally evaluated. Results show a 78% increase in thrust with nanostructures, but a threshold effect with lower voltages and frequencies impacting thrust generation. Electric characteristics are not sensitive to nanostructures, demonstrating the effectiveness of incorporating nanoscaled structures into DBD plasma actuators to improve mechanical performance.
Article
Chemistry, Multidisciplinary
Yuxiao Zheng, Xueying Xu, Fengrui Li, Weilin Chen, Jian Gong, Chunlei Wang
Summary: This work presents a transparent photodetector based on binary metal oxides, where the addition of polyoxometalate (POM) modified ZnO NWs in the top layer increases UV absorption and creates an interlayer p-n junction, achieving high transparency and efficient photodetection capabilities.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Optics
Xiaomiao Fei, Dayong Jiang, Man Zhao
Summary: Recent studies have shown that nanostructures have a significant gain effect on the performance of photodetectors (PDs). In this study, Cu2O and ZnO films were prepared using electrochemical and magnetron sputtering methods, respectively, and ZnO nanowire arrays (NWAs) were grown on Cu2O/ZnO PDs using a hydrothermal method. The introduction of ZnO nanowires effectively improved the responsivity and light absorption of the Cu2O/ZnO PD by about 16 times. The ZnO nanowires also enhanced the detection sensitivity of the Cu2O/ZnO/ZnO NWs PD by nearly 5 times, demonstrating their remarkable improvement for heterojunction PDs.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Shaoyu Liu, Weiye Yang, Lei Liu, Huohuo Chen, Yingkai Liu
Summary: Ni-doped ZnO nanowire arrays with different Ni concentrations are grown on etched fluorine-doped tin oxide electrodes by hydrothermal method. The morphology and microstructure of the nanowire arrays are investigated and the sensitive property is measured. The Ni-ZnO nanowires with 8 at.% Ni precursor concentration show high selectivity for H2S and a large response compared to other gases.
Article
Chemistry, Physical
Xiuxiu Dong, Jun Deng, Meicai Ge, Shun Lu, Qiuxiang Zhu
Summary: A novel coaxial CdS@ZnO nanowire array catalyst was synthesized and the optimal photocatalytic composite was obtained by adjusting the ratio of CdS and ZnO. The catalyst exhibited strong photocatalytic solid activity, achieving high adsorption and photodegradation rates for methylene blue under simulated sunlight illumination.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Piyawan Paisrisarn, Takao Yasui, Zetao Zhu, Annop Klamchuen, Panita Kasamechonchung, Tuksadon Wutikhun, Visittapong Yordsri, Yoshinobu Baba
Summary: This study investigated the effect of crystallinity and morphology of ZnO nanowires on the capture efficiency of EVs, important biomarkers of cancer. The results showed that both the crystallinity and morphology of the nanowires played a role in improving the EV capture performance.
Article
Chemistry, Analytical
Ling Zhu, Zipeng Yin, Zijian Lv, Meijin Li, Dianping Tang
Summary: The study team developed a new signal-amplified photoelectrochemical (PEC) immunoassay method for quantitative monitoring of the target PSA based on an ion-exchange reaction, which exhibited a good linear range and low detection limit, providing a new perspective for disease-related biomarker detection.
Article
Chemistry, Analytical
Dongzhi Zhang, Qian Mi, Dongyue Wang, Tingting Li
Summary: A self-powered high-performance gas sensor based on MXene/Co3O4 composite driven by ZnO/MXene nanowire arrays piezoelectric nanogenerator at room temperature was reported, showing significant response to formaldehyde concentration. The sensor has potential application value for detecting formaldehyde, and the piezoelectric output voltage can drive the sensor effectively.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Songyou Zhang, Xiuqing Cao, Guofu Zhang, Shaozhi Deng, Jun Chen
Summary: This paper investigates the effect of pixel density on the emission performance of gated ZnO nanowire arrays. Simulation and experimental results show that the fabricated arrays, with optimized gate modulation, exhibit high emission current and effective gate control.
Article
Chemistry, Multidisciplinary
Yi Li, Xiaojing Wei, Qiuyue Yang, Jie Zhang, Wencai Wang, Linlin Dong, Bokai Gao, Chen Li, Xiaolin Sun, Yanwen Ma
Summary: In this work, self-powered flexible transparent ultraviolet (UV) photodetectors with fast response speed, high transparency, and excellent mechanical stability are reported. The device is based on a CuO/ZnO nanowire array heterojunction on a Cu NW backbone. It exhibits a rise time of 16 ms, a decay time of 17 ms, a photocurrent/dark current ratio of 392, and a transparency of 80%. Furthermore, the device retains good photoresponse performance even after 10,000 bending cycles, demonstrating its superior mechanical stability.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
Zehira Belamri, Leila Boumaza, Smail Boudjadar
Summary: In this study, a ZnO thin film coating on an aluminum substrate was investigated. Zn thin layers were electroplated and thermally oxidized to synthesize the ZnO thin films. The samples were characterized using various techniques and it was found that the films showed different morphologies and surface roughness depending on the annealing time. The synthesized films exhibited both hydrophobic and hydrophilic surfaces, with the sample annealed for 2 hours at 500°C showing the highest contact angle.
Article
Multidisciplinary Sciences
Tuerkan Bayrak, Amanda Martinez-Reyes, David Daniel Ruiz Arce, Jeffrey Kelling, Enrique C. Samano, Artur Erbe
Summary: A method based on directed molecular self-assembly was introduced to manufacture and electrically characterise C-shape gold nanowires, revealing hopping, thermionic, and tunneling transports indicating weakly coupled metallic segments along the wires.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Yalambaku Rajesh, M. S. S. Bharati, S. Venugopal Rao, M. Ghanashyam Krishna
Summary: This study demonstrates the potential of ZnO nanowire arrays decorated with TiN nanoparticles as SERS substrates, achieving enhancement in Raman signals. The research presents a simple, cost-effective and facile method for the fabrication of TiN-based SERS substrates.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Yu-Ju Huang, Lian-Ming Lyu, Cheng-Yi Lin, Guan-Chi Lee, Kai-Yuan Hsiao, Ming-Yen Lu
Summary: In this study, the enhanced photocatalytic activity of a few-layer WS2/ZnO heterostructure was observed for dye degradation and H-2 production. The few-layer WS2 acted as a co-catalyst and provided active sites for reactions, leading to higher rates of photocatalytic H-2 production compared to bare ZnO nanoparticles. Additionally, vortex-stirring accelerated mass-transfer, resulting in higher efficiency of dye photodegradation.
Article
Chemistry, Physical
Guan-Chi Lee, Lian-Ming Lyu, Kai-Yuan Hsiao, Yu-Sheng Huang, Tsong-Pyng Perng, Ming-Yen Lu, Lih-Juann Chen
Summary: This study applied a piezo-potential to ZnO/ZnS/MoS2 heterostructures to enhance the separation of photoexcited electrons and holes, resulting in increased production of H2. The heterostructures were synthesized through hydrothermal synthesis, and the H2 production varied with the different mixing ratios of ZnO and MoS2. When a piezopotential was introduced through ultrasonication during the photocatalytic reaction, the rate of H2 production significantly increased due to band tilting and improved charge transfer.
Article
Nanoscience & Nanotechnology
Ragini Mishra, Abhishek Dubey, Ching-Wen Chang, Ashok Ranjan, Ming-Yen Lu, Ta-Jen Yen, Shangjr Gwo
Summary: This study demonstrates an efficient hot-hole injection mechanism based on a metal-semiconductor heterostructure, which can be used for optical sensing and solar energy harvesting. By optimizing the material structure, the photocurrent conversion efficiency is significantly increased, and an internal photovoltage enables self-sustainable photocurrent generation.
Article
Nanoscience & Nanotechnology
Ashok Ranjan, Kai-Yuan Hsiao, Cheng-Yi Lin, Yu-Han Tseng, Ming-Yen Lu
Summary: In this study, lead-free rhombohedral R3c bismuth sodium titanate (BNT) particles were synthesized using a sol-gel method and utilized as piezocatalysts with high production rates and efficiency in degrading organic pollutants.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Aanchal Agarwal, Yan-Ting Liu, Yu-Sheng Huang, Chang-Wei Cheng, Shyam Narayan Singh Yadav, Ta-Jen Yen, Shangjr Gwo, Ming -Yen Lu, Lih-Juann Chen
Summary: The effects of high-k dielectric materials MoO3 and Ta2O5 as interlayers on the lasing thresholds of ZnO/high-k material/Al nanolasers have been investigated. The results showed that these high-dielectric-constant materials can be used to construct low threshold surface-plasmon polariton lasers. By inserting MoO3 and Ta2O5 films between the Al film and ZnO nanowires, material losses are reduced and optical confinement is enhanced.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Yu-Cheng Chang, Shih-Yue Syu, Ming -Yen Lu
Summary: This study synthesized In(OH)3-In2S3 nanosheet and In(OH)3-In2S3-Cu2O composite via hydrothermal and wet chemical methods, respectively. The composite showed enhanced properties compared to the nanosheet, including higher surface area, light-harvesting capacity, and charge carrier separation. In addition, In(OH)3-In2S3-Cu2O nanofiber was fabricated through electrospinning with simplicity and high photocatalytic activity. The study also investigated the parameters affecting the photocatalytic hydrogen production of the nanofiber and demonstrated its superior performance. These findings contribute to the practical application of photocatalytic hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kim Tuyen Le, Nguyet N. T. Pham, Yin-Song Liao, Ashok Ranjan, Hsun-Yen Lin, Po-Han Chen, Hoang Nguyen, Ming Yen Lu, Seung Geol Lee, Jyh Ming Wu
Summary: In this study, active sites of molybdenum disulfide (MoS2) nanoflowers (NFs) decorated with Ni(OH)(2) nanoparticles (NPs) were synthesized to form heterostructures. It was found that Ni(OH)(2)/MoS2 NF heterostructures can split water into hydrogen and oxygen gases. The interface of Ni(OH)(2)/MoS2 NF exhibited strain-induced piezopotential, promoting charge separation and enhancing the efficiency of the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER).
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Yu-Hsiang Hsueh, Ashok Ranjan, Lian-Ming Lyu, Kai-Yuan Hsiao, Yu-Cheng Chang, Ming-Pei Lu, Ming-Yen Lu
Summary: This study investigates the effect of stacking faults (SFs) on electromigration in silver nanowires (AgNWs), specifically with regards to necking and void growth. AgNWs are synthesized using the galvanic replacement reaction at a low cost. By varying the concentration of silver nitrate, AgNWs with and without SFs are obtained. In situ TEM analysis provides strong evidence that SFs effectively suppress the migration of surface atoms. Additionally, the investigation of void growth process reveals that SF facets parallel to the {111} plane contribute to anisotropic morphological changes and slow down the rate of void growth by 135 times. Therefore, planar defects can extend the lifetimes of devices by causing intrinsic changes to material properties.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Chun-Han Kuo, Ai-Yin Wang, Hao-Yu Liu, Shao-Chu Huang, Xiang-Rong Chen, Chong-Chi Chi, Yu-Chung Chang, Ming-Yen Lu, Han-Yi Chen
Summary: Solid-state Li-ion batteries, which can avoid the combustion and explosion of electrolytes and enhance battery performance, are prospective candidates for storage systems. In this study, a novel high-entropy oxide with high conductivity and air stability was successfully synthesized as a solid electrolyte for Li-ion batteries.
Article
Chemistry, Physical
Sheng-Yu Hsu, Chong-Chi Chi, Ming-Yen Lu, Shou-Yi Chang, Yuan-Tai Lai, Su-Yueh Tsai, Jenq-Gong Duh
Summary: In this study, (AlCrNbSixTi)N multicomponent nitride coatings with various Si content were fabricated and it was found that multi-dimensional strengthening and toughening mechanisms were present. The addition of Si contributed to enhanced atomic packing, nanostructure formation, and microstructural modification, leading to multiple strengthening and toughening effects. The maximum hardness of 27.2 GPa and high fracture toughness of 3.66 +/- 0.37MPa m were achieved with the addition of 4.4 at% of Si. The (AlCrNbSi7.6Ti)N coating exhibited the highest fracture toughness due to featureless microstructure, nanostructure formation, and non-complete amorphization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yu-Sheng Huang, Yan-Ting Liu, Tsong-Pyng Perng, Ming-Yen Lu, Yu-Lun Chueh, Lih- Juann Chen
Summary: Continuous few-layer MoS2 thin films with exposed active sites were fabricated using thermal decomposition. By varying Ar plasma power, defect engineering resulted in enhanced photocatalytic properties, with 30 W power providing the optimal enhancement. However, increased exposed active edges/defects induced oxidation in air. The influence of defects on photocatalytic performance was investigated, emphasizing the need for stabilizing defects for practical applications.
Article
Nanoscience & Nanotechnology
Ching-Han Mao, Chin-Chien Chung, Wei-Ren Syong, Yu-Chi Yao, Kai-Yuan Hsiao, Ming-Yen Lu, Mario Hofmann, Ya-Ping Hsieh, Yu-Jung Lu, Ta-Jen Yen
Summary: This article presents an all-semimetal plasmonic photodetector consisting of monolayer MoS2, Bi contact electrodes, and Bi plasmonic nanodisks to address the contact resistance and absorption limitations of monolayer TMDCs. The results show a 690% enhancement in photoresponsivity and a detectivity of 6.40 x 1012 Jones, making it the highest reported value for plasmonic TMDC photodetectors.
Article
Chemistry, Multidisciplinary
Chung-An Hsieh, Guang-Hsun Tan, Yung-Tang Chuang, Hao-Cheng Lin, Po-Ting Lai, Pei-En Jan, Bo-Han Chen, Chih-Hsuan Lu, Shang-Da Yang, Kai-Yuan Hsiao, Ming-Yen Lu, Li-Yin Chen, Hao-Wu Lin
Summary: Highly efficient vacuum-deposited metal halide perovskite light-emitting diodes (PeLEDs) are achieved by optimizing the stoichiometric ratio of the sublimed precursors under high vacuum and incorporating ultrathin under- and upper-layers for the perovskite emission layer (EML). The properties of the perovskite EMLs are strongly influenced by the presence and nature of the upper- and presublimed materials, leading to enhanced device performance. By eliminating Pb degrees formation and passivating defects, the PeLEDs achieve outstanding external quantum efficiencies (EQE) of 10.9% and 21.1% with and without a light out-coupling structure, respectively, surpassing the 10% EQE milestone of vacuum-deposited PeLEDs.
Article
Chemistry, Physical
Rishi Ranjan Kumar, Wei-Cheng Yu, Thangapandian Murugesan, Po-Cheng Chen, Ashok Ranjan, Ming -Yen Lu, Heh-Nan Lin
Summary: Photodeposition has been extensively used to grow nanomaterials on a substrate, but directly depositing 2D transition metal dichalcogenides (TMDs) remains challenging. An alternative approach is to deposit 2D TMDs on a suitable nanomaterial template. In this work, large-scale MoS2/Cu2O/ZnO heterostructure arrays are formed by low-temperature in situ photodeposition and used for chemiresistive gas sensing at room temperature. The excellent gas sensing performance is attributed to the abundant heterojunctions in the nanocomposite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Hao-Chin Huang, Kai-Yuan Hsiao, Yu-Han Tseng, Yan-De Chen, Ming-Yen Lu
Summary: In this study, an in situ transmission electron microscopy (TEM) heating system was used to investigate the morphological changes of cubic Ag nanoparticles (NPs) and Ag-based core-shell structures induced by sublimation, as well as the influence of shell coverage on thermal stability. It was found that large Ag NPs (>50 nm) showed a three-stage sublimation-induced morphological change, while small Ag NPs (<30 nm) showed a uniform sublimation. The sublimation process of core-shell NPs started at stage II, and the thermal stability was enhanced by carbon shell passivation.