Article
Chemistry, Physical
Virginia Boix, Claudia Struzzi, Tamires Gallo, Niclas Johansson, Giulio D'Acunto, Zhihua Yong, Alexei Zakharov, Zheshen Li, Joachim Schnadt, Anders Mikkelsen, Jan Knudsen
Summary: In this study, electron beam induced fragmentation of borazine was used to synthesize amorphous BNx on graphene, providing insight into the use of electron beams for synthesis and lateral control of stable and inert layers in 2D heterostructures. The final structure exhibited thermal stability up to 1400 K and approximately 50 nm spatial control provided by the electron beam. This research opens up new possibilities for manufacturing electronic devices based on 2D materials.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
V. A. Ryzhkov, G. E. Remnev, I. N. Pyatkov, M. V. Zhuravlev
Summary: Reducing pressure reduces the number of 12C ions while increasing the number of protons accelerated. Protons and 12C ions are accelerated to equal velocities by the same relativistic electron bunches, but they differ in terms of extraction and capture processes during acceleration.
Article
Chemistry, Multidisciplinary
Alessio Mezzi, Eleonora Bolli, Saulius Kaciulis, Alessandro Bellucci, Barbara Paci, Amanda Generosi, Matteo Mastellone, Valerio Serpente, Daniele Maria Trucchi
Summary: Thin films of scandium oxide (Sc2O3) were deposited on silicon substrates to study the effect of thickness on work function reduction. Various measurements, including X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), energy dispersive X-ray reflectivity (EDXR), atomic force microscopy (AFM), and ultraviolet photoelectron spectroscopy (UPS), were performed on the films of different nominal thicknesses (ranging from 2-50 nm) and in multi-layered mixed structures with barium fluoride (BaF2) films. The results showed that non-continuous films were necessary to minimize the work function, even with a stoichiometry far from ideal (Sc/O = 0.38), due to the formation of surface dipole effects between crystalline islands and substrates. Furthermore, the presence of BaF2 in multi-layered films did not contribute to further work function reduction.
Article
Chemistry, Multidisciplinary
Hsuan Lu, Chih-Hong Chang, Bo-Rong Wu, Nien-Chi Wu, Jun-Zhi Liang, Chi-An Dai, Arnold C-M Yang
Summary: In this work, the authors demonstrate that nearly 100% quantum efficiency can be achieved in thin solid films of semiconducting polymers by mechanically stretching the polymer molecules into molecular confinement. The quantum efficiencies of the polymers significantly increase after stretching, especially for the transparent polyfluorene (PFO) and the semitransparent MEH-PPV. However, the quantum efficiency of the crystalline polythiophene (P3HT-rr) does not increase in the pristine state, but it increases after reducing the interchain coupling. The findings suggest that mechanical confinement plays a fundamental role in stabilizing and migrating photoexcited charges.
Article
Chemistry, Multidisciplinary
Eva De Leo, Aurelio A. Rossinelli, Patricia Marques-Gallego, Lisa V. Poulikakos, David J. Norris, Ferry Prins
Summary: Linear gratings patterned on the surface of cQD thin films enhance the outcoupling of emission, resulting in bright and saturated colors. By adjusting the periodicity and orientation of the gratings, active color tuning of the thin-film emission is achieved.
Article
Materials Science, Ceramics
Changhua Chen, Yunsheng Tang, Wenyuan Liu, Jun Cheng, Changfeng Ke, Yankun Huo, Ping Wu, Jianzhong Ni
Summary: The study found that reducing electron beam energy and increasing TiC coating thickness can enhance energy deposition and temperature differences, leading to improved resistance to electron beam bombardment in TiC/Graphite targets. Adjustment of TiC coating thickness controls coating morphology, with thicker coatings providing better resistance to electron beam bombardment, as supported by numerical modeling results.
CERAMICS INTERNATIONAL
(2021)
Article
Spectroscopy
Shu-Yu Lin, Sheng-Lung Chou, Chien-Ming Tseng, Yu-Jong Wu
Summary: Electron bombardment experiments on aniline revealed the formation of aniline cation, anilino and phenyl radicals, and phenylnitrene. Further irradiation at specific wavelengths resulted in the depletion of certain species and the formation of other aromatic compounds. The infrared features of these species were characterized through a combination of experimental and theoretical approaches. These findings contribute to a better understanding of the molecular structure and photochemical behavior of aniline.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Tao Liu, Xujie Tong, Shuoqiu Tian, Yuying Xie, Mingsai Zhu, Bo Feng, Xiaohang Pan, Rui Zheng, Shan Wu, Ding Zhao, Yifang Chen, Bingrui Lu, Min Qiu
Summary: Ice lithography is a promising technology in nanotechnology, however, its theoretical modeling and understanding are still limited. In this study, a Monte Carlo algorithm-based modeling method for ice lithography is developed and simulations are performed. The comparisons with conventional electron beam lithography show the superior properties of ice lithography.
Article
Chemistry, Applied
Sri Nithya Mahottamananda, Yash Pal, Syed Alay Hashim, Mengu Dinesh, Djalal Trache
Summary: This study successfully incorporated B4C and PTFE into the HTPB fuel matrix, improving the ignition, combustion, and regression rate performance of solid fuel. The combustion behavior of different mass ratios of B4C was analyzed, and a comprehensive combustion mechanism was proposed for B4C/PTFE loaded in the HTPB matrix under an oxygen environment.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2023)
Article
Chemistry, Physical
Ewa Stodolak-Zych, Agnieszka Gubernat, Anna Scislowska-Czarnecka, Magdalena Chadzinska, Lukasz Zych, Dariusz Zientara, Marek Nocun, Piotr Jelen, Miroslaw M. Bucko
Summary: This study aimed to explain the differences in the biological behavior of two boron carbide powders prepared by different synthesis methods. The results showed that the synthesized powder had a higher boron content and facilitated protein adsorption, leading to increased hydrophilicity and improved cell adhesion.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Bo Jiang, Wei Wei, Wenxuan Jiang, Mengqi Lv, Wei Wang, Hui Wang
Summary: This study directly visualizes the controllable recovery of electron transfer ability for single Prussian blue nanoparticles (PBNPs) after electron beam insertion using an electro-optical imaging technique. By eliminating e-beam damage and precisely controlling electron insertion behaviors, a lossless chemical reduction mechanism for metal ions on the framework structure of PBNP is induced, temporarily blocking electron transfer channels. A subsequent charge rebalance process at a sub-nanoparticle level rebuilds ion migration channels on the outer layer of single PBNP, repairing the electron transfer path. This work provides a generic methodology to study the electron-particle interplay and mechanism of electrode materials at a sub-nanoparticle level.
Article
Chemistry, Inorganic & Nuclear
Jia-Hao Wei, Wei Ren, Heng Lu, Guo-Guang Yao, Ying Zhu, Dong-Xing Zhao, Wei-Li Wang, Qin Shi, Jun Wang, Tian Ding, Bo-Yu Zhang
Summary: The annealing process resulted in a gradual increase in grain size for the Mn-Co-Ni oxide film deposited by electron beam evaporation. Samples annealed at different temperatures exhibited varying properties, with the 750 degrees C sample showing the highest thermal constant and activation energy. The proposed synthesis route for medium entropy Mn-based thermosensitive films is feasible and may have implications for the preparation of other medium/high entropy materials.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Manabu Ishimaru, Ryusuke Nakamura, Yanwen Zhang, William J. Weber, George G. Peterson, Natale J. Ianno, Michael Nastasi
Summary: In this study, the structures of amorphous boron carbide (a-BxC) were characterized using electron diffraction technology. It was found that the most favorable cluster in B4C generated by ion irradiation is a pentagonal pyramid, while C-C homonuclear bonds were formed in the deposited a-BxC thin film. X-ray photoemission spectroscopy revealed that the a-BxC thin film contains more carbon than B4C, leading to the formation of the homonuclear bonds.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Kelvin Y. Xie, Qirong Yang, Christopher J. Marvel, Mo-Rigen He, Jerry C. LaSalvia, Martin P. Harmer, Chawon Hwang, Richard A. Haber, Kevin J. Hemker
Summary: This paper reviews the progressive understanding of amorphization in three successive generations of boron carbide, comparing the susceptibility of amorphization in each generation and elucidating the fundamental mechanisms that explain the reduction in amorphization for B-rich and B/Si codoped boron carbides. Future research directions to further deepen the understanding of stress-induced amorphization of boron carbide are also discussed.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Engineering, Mechanical
Undrakh Mishigdorzhiyn, Aleksandr Semenov, Nikolay Ulakhanov, Aleksandr Milonov, Dorzho Dasheev, Pavel Gulyashinov
Summary: This paper presents the results of electron beam surface alloying (EBSA) of H21 and L6 tool steels using treatment pastes containing boron carbide and aluminum powders. The microstructure, microhardness, wear resistance, and elemental and phase composition of the alloyed layers were investigated. The research is beneficial for various industries where high microhardness, wear resistance, and surface quality are required.
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)