Article
Materials Science, Multidisciplinary
Yi-Jun Jen, Wei-Chieh Ma, Ting-Yen Lin
Summary: By obliquely bidepositing TiN thin films with different subdeposit thicknesses, this study observed a morphological transition from a nano-zigzag array to vertically grown columnar structures. The obtained principal refractive indexes explained the anisotropic transmission and reflection, showing the potential for tunable anisotropic properties in TiN nanostructured films for future multilayer designs. The film with a subdeposit thickness of 3 nm exhibited low refractive index and extinction coefficient for visible wavelengths, indicating promising characteristics for applications in optical devices.
Article
Materials Science, Ceramics
Adyasha Samal, Annu Kumar Lakshya, Shyam Murli Manohar Dhar Dwivedi, Avijit Dalal, Anupam Ghosh, Argha Deep Paul, Rajat Mahapatra, Rajeev Kumar Gupta, Mohammed Adnan Hasan, Arjun Dey, Aniruddha Mondal
Summary: VO2 nano-columns were fabricated using GLAD technique with a TiO2 cap-layer for phase protection, XRD and FTIR analysis revealed the presence of different oxidation states, and the sample exhibited a stable phase transition temperature and resistance drop at 66 degrees Celsius. Small-radius polaron model and Fermi-Dirac theory were used to calculate sheet resistance and carrier density.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Walker J. Tuff, Robert A. Hughes, Spencer D. Golze, Svetlana Neretina
Summary: Bimetallic Janus nanostructures are highly functional nanomaterials that maintain partially exposed surfaces due to the union of two chemically distinct metal segments. This study demonstrates the use of a collimated ion beam as a control to selectively remove a passivating oxide shell from one side of a metal nanostructure, resulting in a substrate-bound Au-Ag Janus nanostructure. The developed procedures enable the realization of complex Janus architectures arranged in periodic arrays, advancing the field of nanometal syntheses directed by oxides.
Article
Biophysics
Xun Lu, Seongmin Lee, Jun Kim, Naseem Abbas, Mohsin Ali Badshah, Seok-min Kim
Summary: A selective fabrication method of Ag nanorods on the microcolumn structure using the GLAD process was proposed to enhance the signal-to-background noise ratio of the metal-enhanced fluorescence substrate.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Biochemistry & Molecular Biology
Lijian Meng, Tao Yang
Summary: Nanostructured TiO2 films were deposited on Indium Tin Oxide (ITO) and glass substrates using dc reactive magnetron sputtering at various substrate inclination angles. The structural and optical properties of the films were analyzed using X-ray diffraction, scanning electron microscopy, and UV-Vis spectrophotometer. Dye-sensitized solar cells (DSSC) were constructed with these TiO2 films as photoelectrodes, and the impact of substrate inclination angle during film preparation on DSSC conversion efficiency was investigated.
Article
Chemistry, Multidisciplinary
Ting Xiao, Jie Zhao, Peng Sun, Peng Li, Yaokang Zhang, Ni Zhao, Zhiwei Ren, Gang Li, Zhifeng Huang, Zijian Zheng
Summary: The study introduces a new type of broadband-transmitting built-in TiO2 metalens that can enhance the sensitivity, speed, and efficiency of photodetectors.
Article
Multidisciplinary Sciences
Xin-Xian Wu, Cheng-Yu Lu, Tsung-Yu Huang
Summary: In this study, an oblique-flat-sheet metamaterial perfect absorber (MPA) was designed to enhance the sensitivity of a biosensor. By simulating and conducting experiments, it was confirmed that the MPA had higher sensitivity.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Khushboo Bukharia, Prasanta Karmakar, Pallavi Pandit, Ajay Gupta
Summary: The study found that oblique angle deposition results in columnar growth of magnetic nanowires with a well-defined uniaxial magnetic anisotropy, where the easy axis of magnetization is tilted by an angle of 25 degrees.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Mahsa Fakharpour, Fahimeh Abrinaei
Summary: Helical manganese oxide nanostructures were successfully deposited on glass substrate using glancing angle deposition and electron-beam evaporation technique. Characterization techniques including X-ray diffraction, FESEM imaging, and FTIR spectroscopy confirmed the successful growth of the nanostructured thin film. The optical properties and nonlinear optical behavior of the helical manganese oxide nanostructures were investigated, revealing their potential as nanophotonic devices.
Article
Materials Science, Multidisciplinary
Mengsheng Yang, Kewei Gao, Pifeng Xing, Taimin Yi, Zhibing He, Bo Ke
Summary: Gold nanoarray films prepared by glancing angle deposition exhibit different thermal stabilities and degradation mechanisms based on their structural features at different temperatures.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Vinit Kumar Yadav, Amitabha Nath, Abhijit Das, Julaiba Tahsina Mazumder, Mitra Barun Sarkar
Summary: Enhanced photosensing performance was reported for Indium nanoparticles capped TiO2 nanowire array using GLAD technique, showing high ideality factor and improved photoresponsivity. The ON/OFF switching irradiation for the In NPs based photosensor increased with quick rise and fall times.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Physical
J. Potocnik, N. Bozinovic, M. Popovic, T. Barudzija, M. Nenadovic, M. Novakovic
Summary: In this study, copper thin films with zigzag and square spiral nanostructures were deposited using glancing angle deposition. The morphological, chemical, structural, optical, and electrical properties of the films were investigated. The results showed that the porousness and growth mechanism of the nanostructures significantly influenced the properties of the films, and the optical and electrical properties were closely related to the concentration of defects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Zachary R. Lawson, Arin S. Preston, Matiyas T. Korsa, Nathaniel L. Dominique, Walker J. Tuff, Eli Sutter, Jon P. Camden, Jost Adam, Robert A. Hughes, Svetlana Neretina
Summary: This article demonstrates an assembly route for the fabrication of aligned plasmonic gold trimers with air-filled vertical nanogaps, exceeding the spatial controls of standard lithographic techniques. By utilizing specific process steps and control measures, precise positioning of nanogaps and metal assembly, as well as characterization of the optical response of the structures, were achieved.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Optics
Suwan Plaipichit, Surawut Wicharn, Sirirat Champasee, Thitiporn Kaewyou, Puttita Padthaisong, Chamnan Promjantuk, Watchara Chao-moo, Tossaporn Lertvanithphol, Viyapol Patthanasettakul, Mati Horprathum, Hideki Nakajima, Saksorn Limwichean
Summary: In this study, a surface-enhanced Raman scattering (SERS) substrate was fabricated using titanium nitride nanorods structures (TiN NRs) prepared by high-power impulse magnetron sputtering (HiPIMS) and glancing angle depositions (GLAD) techniques. The surface morphology, crystalline structures, and chemical composition of TiN NRs were characterized, and the efficiency of the generated Raman signal was measured. The results show that TiN NRs are a promising candidate for cost-effective fabrication of SERS substrates.
Article
Engineering, Electrical & Electronic
Atul Kumar Singh, Priyanka Chetri, Michael Cholines Pedapudi, Jay Chandra Dhar
Summary: Two different junction devices were fabricated using glancing angle deposition technique. The characteristics of the devices were confirmed by FE-SEM and TEM analysis. The I-V characteristics and rectification ratio indicated the formation of good Schottky and p-n junctions. The specific detectivity and noise equivalent power were measured, and the devices showed fast response.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Vinicius G. Antunes, Carlos A. Figueroa, Fernando Alvarez
Summary: This paper reports on the competition between H2O (residual) and H-2 by site (defects) on the Si surface, created by Xe+ ion bombardment. X-ray photoelectron spectroscopy (XPS) was used to analyze the data, as hydrogen cannot be detected by XPS. The study found that the hydrogen passivation effect limits the formation of Si-OH and Si-O-Si bonds, and Xe+ ion bombardment diminishes the H-2 chemisorption energy barrier onto Si.
Article
Chemistry, Physical
Digvijay Singh, Felipe Cemin, Mawin J. M. Jimenez, Vinicius Antunes, Fernando Alvarez, Dmytro Orlov, Carlos A. Figueroa, Santosh S. Hosmani
Summary: This study investigates the high-temperature oxidation behavior of nanostructure surface layered AISI 304L stainless steel. The results show that the surface mechanical attrition treatment (SMAT) process can lead to the formation of a stable and protective oxide scale with better adhesion and higher density.
APPLIED SURFACE SCIENCE
(2022)
Article
Instruments & Instrumentation
Ricardo Javier Pena Roman, Yves Auad, Lucas Grasso, Lazaro A. Padilha, Fernando Alvarez, Ingrid David Barcelos, Mathieu Kociak, Luiz Fernando Zagonel
Summary: This paper presents a light collection/injection strategy based on an off-axis parabolic mirror collector for a low-temperature Scanning Tunneling Microscope (STM). The system allows for various spectroscopic techniques and demonstrates flexible and efficient light injection and collection capabilities on metallic surfaces and semiconducting samples.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Physics, Applied
Abderzak El Farsy, Vinicius G. Antunes, Benjamin Seznec, Loic Schiesko, Charles Ballage, Tiberiu Minea
Summary: The study utilized tunable diode laser absorption spectroscopy to measure the velocity distribution functions of titanium atoms in the electron beam powder bed fusion process. The obtained vapor properties serve as reliable inputs for melt pool simulations.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Coatings & Films
Anna Kapran, Vinicius G. Antunes, Zdenek Hubicka, Charles Ballage, Tiberiu Minea
Summary: This study focuses on the influence of different magnetic field configurations of a high-power impulse magnetron sputtering (HiPIMS) in a nonreactive mode on the film precursors. The ionized flux fraction and total flux deposited onto the substrate were measured. The degree of magnetron balancing and the geometry of the magnetic field were investigated as crucial factors influencing the thin film deposition for different HiPIMS pulse lengths.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Nanoscience & Nanotechnology
Fabio J. R. Costa, Thiago G-L Brito, Ingrid D. Barcelos, Luiz Fernando Zagonel
Summary: Single layers of transition metal dichalcogenides (TMDCs), such as WSe2, have attracted increasing attention for their intense electron-hole interactions and potential for novel optical applications. The dielectric properties of substrates significantly influence the electronic and optical properties of these atomically-thin semiconductors, including the band-gap and luminescence intensity. Increasing permittivity induces a red-shift of the optical band-gap and a reduction in luminescence intensity of WSe2.
Article
Nanoscience & Nanotechnology
Claudevan A. Sousa, Luiz G. Bonato, Eduardo S. Goncalves, Arthur Alo, Brener R. C. Vale, Diogo B. Almeida, Ana F. Nogueira, Luiz F. Zagonel, Lazaro A. Padilha
Summary: In this paper, the nonlinear optical response of CsPbBr3 perovskite nanocrystals was investigated and found to be not particularly high. The measured nonlinear refractive index was in the same order of magnitude as other semiconductors.
Article
Materials Science, Coatings & Films
Jennifer Stefani Weber, Vanessa Piroli, Michael Cristian Goldbeck, Bruna Louise Perotti, Carla Daniela Boeira, Newton Kiyoshi Fukumasu, Alexandre Fassini Michels, Carlos Alejandro Figueroa
Summary: This study investigated the adhesion of DLC films on low-alloy steel using silicon-containing interlayers at different deposition times. The results showed that the interlayer thickness increased and silicon bonds contributed more with longer deposition times. However, longer deposition times also led to higher roughness and defect ratio in the DLC coatings.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Physics, Fluids & Plasmas
V. G. Antunes, M. Rudolph, A. Kapran, H. Hajihoseini, M. A. Raadu, N. Brenning, J. T. Gudmundsson, D. Lundin, T. Minea
Summary: The high power impulse magnetron sputtering (HiPIMS) discharge increases ionization of sputtered atoms due to higher electron density and efficient electron energization. The ionization mainly occurs within the electron trapping zone, called the ionization region (IR), determined by the magnet configuration. The extension and volume of the IR are measured based on optical emission from excited argon atoms, assuming proportional ionization and excitation processes. The recorded images above a titanium target show that the shape of the IR corresponds well to the magnetic field lines. The IR expands from 10 to 17 mm from the target surface when the parallel magnetic field strength above the racetrack is lowered from 24 to 12 mT at a constant discharge current.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Yves Auad, Eduardo J. C. Dias, Marcel Tence, Jean-Denis Blazit, Xiaoyan Li, Luiz Fernando Zagonel, Odile Stephan, Luiz H. G. Tizei, F. Javier Garcia de Abajo, Mathieu Kociak
Summary: The authors propose a technique that combines free-space light and electron beams to achieve unmatched spatial and spectral resolution. This approach allows detailed investigation of photonic structures, promising advancements in microscopy and quantum optics.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Antonio Riul, Anerise de Barros, Gabriel Gaal, Maria L. Braunger, Mawin J. Jimenez, Carlos Avila-Avendano, Varlei Rodrigues, Monica Jung de Andrade, Manuel Quevedo-Lopez, Fernando Alvarez, Ray H. Baughman
Summary: Self-healing materials play a crucial role in the development of next-generation multifunctional wearables and IoT appliances. The layer-by-layer technique allows for homogeneous dispersion of materials on various matrices, while the addition of conductive fillers enables the creation of thin film composites with controlled conductivity and healing ability under ambient conditions. Achieving a delicate balance among electrical, mechanical, and structural characteristics is essential for the design of conductive self-healing composites. The application of these composites in a self-healing e-tongue demonstrates their potential for solving technological challenges.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Ricardo Javier Pena Roman, Delphine Pommier, Remi Bretel, Luis E. Parra Lopez, Etienne Lorchat, Julien Chaste, Abdelkarim Ouerghi, Severine Le Moal, Elizabeth Boer-Duchemin, Gerald Dujardin, Andrey G. Borisov, Luiz F. Zagonel, Guillaume Schull, Stephane Berciaud, Eric Le Moal
Summary: This study investigates the generation of excitons in monolayer WS2 using inelastic electron tunneling in a scanning tunneling microscope. Optical spectroscopy and Fourier-space optical microscopy reveal that the bias polarity of the tunnel junction determines the spectral and angular distribution of the emitted light.
Article
Chemistry, Physical
L. M. Leidens, D. Matte, G. L. Rech, J. E. Zorzi, A. F. Michels, F. Alvarez, C. A. Perottoni, C. A. Figueroa
Summary: This study proposes a desorption-based model to investigate the isotopic effect on phononic dissipation during friction behavior at the nanoscale. Contradictory conclusions were reported from previous experimental and theoretical approaches. The results show that even a minor surface coverage difference of 5% can have a significant impact on friction, which is supported by molecular dynamics simulations.
APPLIED SURFACE SCIENCE ADVANCES
(2022)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)