Article
Nanoscience & Nanotechnology
Lei Liu, Dong Pan, Lianjun Wen, Ran Zhuo, Jianhua Zhao
Summary: We have developed a new approach to grow vertically aligned InAs nanowires on Si (111) substrates using Ag as catalysts. The diameters of the nanowires obtained by this method are mainly distributed between 20 and 50 nm, and the nanowires with thinner diameters have fewer stacking faults and twin defects, allowing the production of high-quality pure wurtzite nanowires. By using these vertically aligned InAs nanowires as the channel material of field effect transistors, we achieved a field-effect mobility of about 2800 cm(2) V-1 s(-1) and an I (on)/I (off) ratio of about 10(4) at room temperature.
Article
Nanoscience & Nanotechnology
Yuting Zheng, Yanhui Liu, Lin Wang, Jinlong Liu, Junjun Wei, Liangxian Chen, Kang An, Xiaotong Zhang, Haitao Ye, Haojun Zhou, Hongliang Tao, Yuhang Yin, Xiaoping Ouyang, Chengming Li
Summary: The performance of boron-doped diamond hollow nanoneedle array was enhanced through surface state modulation. By controlling the surface roughness and boron concentration, a uniform and dense nanoneedle array was constructed. After hydrogen plasma treatment, the nanoneedle array showed excellent field emission stability and desirable current density.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Guozhen Liu, Yan Tang, Abdul Majid Soomro, Peng Shen, Shiqiang Lu, Yehang Cai, Hao Wang, Qianyi Yang, Han Chen, Yingbing Shi, Chun Lin, Feiya Xu, Fuchun Xu, Zhiming Wu, Xiaohong Chen, Duanjun Cai, Junyong Kang
Summary: Piezoelectric nanogenerators (PENGs) have the potential to harvest various types of mechanical energy and power portable devices and wearable electronic systems. In this study, a vertically aligned zinc oxide (ZnO) nanorods array was grown on polycrystalline copper paper using a two-dimensional (2D) hexagonal boron nitride (h-BN) monolayer. The h-BN layer effectively released strain in the ZnO nanoarray, resulting in highly aligned and ultralong nanorods. A flexible and transparent PENG based on the h-BN/ZnO nanoarray/h-BN sandwiched structure was fabricated, with the h-BN layer suppressing carrier movements and improving output voltage. The PENG exhibited a capacitance that increased exponentially with inversely proportional dielectric layer thickness, reaching 0.01 mF with a 2D h-BN monolayer. The multilayer h-BN based PENG achieved an open-circuit voltage of 5 V, a short-circuit current of -18 mu A, and a maximum output power density of 169 mW/cm2, showing practical potential for self-powered wearable devices in the future.
Article
Materials Science, Multidisciplinary
Xinchuan Liu, Yuanxun Li, Jianfeng Xiao, Jiuzhou Zhao, Chi Li, Zhenjun Li
Summary: A mold-aligned transfer anchoring method was used to anchor vertically aligned carbon nanotube films and arrays on a metallic substrate using silver conductive paint via an annealing process. After 100 hours of continuous testing, the anchored carbon nanotube emitter showed a decrease of around 88% in emission current decay rate and a 57% lower current fluctuation compared to the unanchored emitter. Additionally, the anchored emitter successfully distinguished a metal wire with a width of approximately 90 μm using a carbon nanotube cold cathode X-ray imaging system.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Anu Katiyar, Nishant Kumar, R. K. Shukla, Anchal Srivastava
Summary: ZnO nanorods are grown along the c-axis using a sonicated sol-gel immersion method at a lower temperature, where the seed-layer precursor molarity and immersion time significantly impact the structural and morphological properties of the nanorods. These hexagonal nanorods exhibit green emission and persistent photoconductivity, which can be partially quenched through annealing. Annealing also helps improve transmittance and tunes the band gap value of bulk ZnO.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Yongjun Kim, P. R. Deshmukh, Weon Gyu Shin
Summary: Vertically aligned ZnO nanowires developed on Pt coated Si-wafer exhibit high photocurrent density and water splitting efficiency under light illumination, making them promising photoelectrodes for solar energy applications.
Article
Chemistry, Multidisciplinary
Y. H. Huang, H. C. Lin, S. L. Cheng
Summary: This study demonstrated the controllable fabrication of vertically aligned NiSi2 nanoneedles with sharp nanotips on (100)Si substrates, eliminating complex processes and toxic chemicals. The produced nanoneedles exhibited excellent electron emission properties, attributed to their low work function, sharp tips, single-crystalline structure, and good vertical alignment, making them promising candidates for vacuum nanoelectronics and field emission display applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Rajendra K. Saroj, Puspendu Guha, Sangmin Lee, Dongha Yoo, Eunsu Lee, Jamin Lee, Miyoung Kim, Gyu-Chul Yi
Summary: A study on the selective growth of hexagonal GaSe film on prepatterned graphene substrate and fabrication of photodetector array is presented. The growth behavior of GaSe and the performance of the fabricated GaSe-based photodetectors are investigated. The findings reveal the potential applications of GaSe in optoelectronic devices.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Analytical
Azka Awais, Muhammad Arsalan, Xiujuan Qiao, Wang Yahui, Qinglin Sheng, Tianli Yue, Yaping He
Summary: Sensitive non-enzymatic electrochemical sensor based on ZnO nanorods grown by hydrothermal method with high surface area and good sensing capacity was successfully prepared and decorated with Au nanoparticles for efficient glucose sensing. The unique hexagonal Au-ZnO nanorods exhibited excellent electrochemical features with high sensitivity, low detection limit, and good stability, repeatability, selectivity, and reproducibility in real samples, showing great potential for glucose detection devices.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Abhisek Chakraborty, Andrea Orsini, Jyoti Prakash Kar, Francesco Gatta, Usman Khan, Christian Falconi
Summary: This study demonstrates a method of naturally promoting ultra-efficient, convection-assisted, seed-less synthesis of ZnO nanowires by heating the substrate with an adjacent temperature-controlled surface.
Article
Chemistry, Physical
Alexander Okotrub, Dmitriy Gorodetskiy, Artem Gusel'nikov, Anastasiya M. Kondranova, Lyubov G. Bulusheva, Mariya Korabovska, Raimonds Meija, Donats Erts
Summary: Aligned arrays of carbon nanotubes (CNTs) are anisotropic nanomaterials with high length-to-diameter aspect ratio, channels passing through the array, and mechanical strength. Iron nanoparticles in the arrays show a gradient distribution, with carbon-encapsulated nanoparticles mostly being iron carbide Fe3C.
Article
Engineering, Chemical
Zhiru Xu, Ligang Xu, Yali Wang, Qunyan Li, Suping Cui, Zuoren Nie, Qi Wei
Summary: This study proposed a novel strategy to enhance the MTBE/water separation performance of porous alpha-Al2O3 membranes. The membranes were modified with ZnO nanorod arrays (ZNA) through a deposition and decomposition method followed by hydrothermal reaction, and then hydrophobized with fluoroalkylsilane (FAS). The modified membranes showed a significantly increased MTBE/water separation factor and concentrated MTBE in the permeate mixture to a high concentration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Optics
Liang Liu, Wangqi Mao, Xinyu Gao, Chenglin He, Zilan Tang, Hao Chang, Long Zhang, Xiaoxia Wang, Hongxing Dong, Anlian Pan
Summary: This study demonstrates a high-capacity physically unclonable function (PUF) label based on vertically aligned perovskite nanowire arrays. The label is constructed using a low-cost solution process and an anodized aluminum oxide template. It achieves high-resolution mapping, impressive encoding capacity, and high pixel density, making it a promising approach for anti-counterfeiting applications.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Guangjie Yuan, Zhenhua Liu, Zhipeng Cao, Jiefei Xie, Haohao Li, Long Li, Yueli Sun, Yingzhong Tian
Summary: This study utilized PECVD to prepare VACNTs on ALD ZnO films, with NH2 radicals exhibiting higher reactivity than H2 molecules and H radicals, leading to lower activation energy for the nucleation and initial growth of VACNTs.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Ceramics
Juan Agustin Badan, Guillermo Jauregui, Elena Navarrete-Astorga, Rodrigo Henriquez, Francisco Martin Jimenez, Daniel Ariosa, Enrique A. Dalchiele
Summary: The effect of solid-state thermal dewetting (SSD) parameters on the Ag NPs decorated ZnO NRs arrays was investigated, showing that bandgap tuning and light manipulation at the nanoscale can be achieved by controlling the size of Ag nanoparticles. Additionally, the surface plasmonic effect caused by silver nanoparticles attached to ZnO NRs arrays enhances room temperature photoluminescence (PL) emission and suppresses the visible light emission.
CERAMICS INTERNATIONAL
(2021)
