Article
Polymer Science
Mubashir Shah, Imran Murtaza, Rehan Abid, Ahmed Shuja, Hong Meng, Naeem Ahmed
Summary: The newly designed electrochromic conjugated polymer P(F8-DT6-TT) shows excellent color tuning ability, characterized through NMR, spectroscopy, and AFM techniques. Its stability improves with increasing cycle numbers and exhibits good overall stability.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Chemistry, Analytical
Francisco A. Filippin, Mariana I. Rojas, Lucia B. Avalle
Summary: This study investigates the size and distribution of Pt nanoparticles (NPs) on glass/Ti/Pt/TiO2 surfaces through scanning electron microscopy (SEM), and finds that TiO2 grows independently of Pt NPs and remains stable under various conditions. The modified semiconductor/electrolyte interfaces with different amounts of electrodeposited Pt show a shift towards more positive values in open circuit potentials (OCPs). These surfaces exhibit both the activity of a Pt quasielectrode and the band structure of a titanium dioxide semiconductor, making them ideal for use as photoanodes. Additionally, the preparation method ensures reproducibility.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
A. S. Mogoda, K. M. Zohdy
Summary: The corrosion behavior of antimony in sulfuric acid solution and the stability of the anodic-generated coating on its surface were studied using various techniques. The results showed that the anodic layer development on the antimony surface occurs via a low-field migration mechanism. The pre-immersion oxide film and the anodic-produced layer on antimony were found to be prone to dissolution in concentrated acid solution. Additionally, the thermodynamic parameters for the corrosion of antimony in concentrated acid solution were calculated.
BULLETIN OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Analytical
Michelle Hadad, Nadine Hadad, Alexander G. Zestos
Summary: In this study, a method for measuring cortisol using carbon fiber microelectrodes and fast-scan cyclic voltammetry was developed. This method showed high sensitivity, high spatiotemporal resolution, and biocompatibility, and it was able to detect cortisol stably. Its application will contribute to a better understanding of the physiological importance of cortisol.
Article
Chemistry, Physical
Karla Caroline de Freitas Araujo, Emily Cintia Tossi de Araujo Costa, Danyelle Medeiros de Araujo, Elisama V. Santos, Carlos A. Martinez-Huitle, Pollyana Souza Castro
Summary: In the development of electrochemical sensors, carbon micro-structured or micro-materials have been widely used as supports/modifiers to improve the performance of bare electrodes. However, no attempts for electroanalytical determination of caffeine with CF microelectrode have been reported in the literature. Therefore, a homemade CF-microelectrode was fabricated and used to determine caffeine in soft beverage samples.
Article
Construction & Building Technology
Le T. Pham, Steven M. Cramer
Summary: This study examined the properties of air bubbles extracted from air-entrained cement paste using new techniques such as atomic force microscopy and scanning electron microscopy. The results showed that air bubbles associated with synthetic AEAs had thinner and more-flexible shells than those with neutralized vinsol resin. The stiffness and thickness of the bubble shells were correlated with the stability of air bubbles in concrete.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Sen Gu, Miao Hao, Peng Pan, Xin Li, Junhui Zhu, Yong Wang, Changhai Ru
Summary: The novel SEM-based integrated nanoindentation, nanoscratch, and atomic force microscopy (AFM) instrument showed promise but faced the challenge of PRC signal drift due to electron irradiation from SEM. A method to reduce PRC signal drift was proposed and validated in this study.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Electrochemistry
Encarnacion Torralba, Eduardo Laborda, Angela Molina, Christine Cachet-Vivier, Stephane Bastide
Summary: Cavity microelectrodes (CMEs) provide a valuable platform for evaluating the electrocatalytic performance of micro- and nanoparticulate materials; experiments show capacitive distortion increases with powder surface area, but faradaic response mainly occurs on the first layer of the powder load, cyclic voltammetry and square wave voltammetry (SWV) are suitable for discriminating faradaic processes at CMEs.
Article
Electrochemistry
B. Hernandez-Concepcion, R. M. Souto, J. Izquierdo
Summary: A novel dynamic method for chemical imaging of actively corroding metal surfaces using CV-SECM and SWV-SECM is proposed. Gold microelectrodes are employed as SECM tips to collect and dissolve Cu2+ ions, enabling the investigation of copper dissolution and electrochemical behavior during mapping of copper surfaces. The results indicate heterogeneous copper degradation and the formation of protective films and passive layers.
ELECTROCHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Zakia Aribou, Nidal Khemmou, Rida Allah Belakhmima, Iman Chaouki, Mohamed Ebn Touhami, Rachid Touir, Said Bakkali
Summary: This study investigated the effects of poly(oxy-1,2-ethanediyl), alpha-(4-nonylphenyl)-omega-hydroxy-,branched (ANP) at various concentrations on the Cu-electrodeposition on the brass surface. The ANP additive was found to have leveling, grain refining, and brightening agent effects. The morphology of the Cu-electrodeposits was analyzed using SEM, EDS, and AFM, while cyclic voltammetry, quantum chemical calculations, and MD simulations were used to explain the Cu-electrodeposition mechanism. Electrochemical measurements showed that the presence of ANP in the copper bath improved the corrosion resistance of the Cu-electrodeposit in a marine medium.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Analytical
Agnieszka Nawrocka, Ireneusz Piwonski, Salvatore Sauro, Annalisa Porcelli, Louis Hardan, Monika Lukomska-Szymanska
Summary: This paper conducted a literature review on four microscopic methods commonly used in dental research, which are confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). These microscopic techniques differ in their principles and require specific protocols for specimen preparation, but all play a significant role in describing and evaluating the adhesive bonding process and enamel surface condition.
Article
Electrochemistry
Anna Pidluzhna
Summary: This study investigates the electrochemical behavior of lithium elements using composite electrodes made from nano TiO2, polypropylene as a binder material, and carbon black as a conductive additive. Material characterization was done using scanning electron microscopy and X-ray photoelectron spectroscopy. The cyclic voltammetric tests were conducted to study the electrochemical behavior of nano TiO2 composite electrodes and the electrochemical properties of these electrodes were described.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Electrical & Electronic
Ryota Fukuzawa, Daichi Kobayashi, Takuji Takahashi
Summary: Electrostatic force microscopy (EFM) is used to examine the electrostatic force between an AFM tip and sample surface, allowing evaluation of their capacitance and surface potential. The dependences of the electrostatic force on dc voltage and ac voltage frequency can be used to investigate carrier density, carrier type, and deep-level states in a semiconductor. Proper distance control is necessary in EFM to ensure accurate measurements, and the oscillation amplitude of a cantilever can be effectively used for feedback control. The 1 A-mode operation in EFM shows good robustness against the strong electrostatic force and allows proper measurements of tip-sample capacitance.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Multidisciplinary
Tianyao Zhang, Haibo Yu, Jialin Shi, Xiaoduo Wang, Hao Luo, Daojing Lin, Zhu Liu, Chanmin Su, Yuechao Wang, Lianqing Liu
Summary: This paper proposes an imaging method that combines atomic force microscopy with microlens-based scanning optical microscopy, which can achieve cross-scale rapid imaging and improve the efficiency of large-scale imaging and detection.
Article
Chemistry, Analytical
Antanas Zinovicius, Juste Rozene, Timas Merkelis, Ingrida Bruzaite, Arunas Ramanavicius, Inga Morkvenaite-Vilkonciene
Summary: Electrically conductive polymers have potential applications in charge transfer from living cells to electrochemical biosensors and biofuel cells. Modification of living cells by polypyrrole (PPy) reduces cell lifespan, burdens replication, and diminishes renewability. The study evaluated the viability and morphology of non-modified, inactivated, and PPy-modified yeast cells, showing a reduction in cell size, increased roughness, and the formation of polymer clusters with higher pyrrole concentrations. A microbial fuel cell (MFC) designed with yeast modified by a 0.05 M pyrrole solution generated 8.32 mW/m(2) more power than the MFC based on non-modified yeast. However, higher concentrations of PPy caused cytotoxic effects and reduced charge transfer efficiency.
Article
Energy & Fuels
M. Giray Ersozoglu, Hurmus Gursu, Metin Gencten, A. Sezai Sarac, Yucel Sahin
Summary: Graphene-based electrodes have great potential for use as positive electrode material in vanadium redox flow batteries. This study successfully prepared binder-free sulfur-doped graphene oxide electrodes in one step and demonstrated improved performance in terms of discharge capacity and energy efficiency for vanadium redox batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Polymer Science
Remzi Gurbuz, Baran Sarac, Viktor Soprunyuk, Eray Yuece, Juergen Eckert, Ali Ozcan, A. Sezai Sarac
Summary: Producing rubbery polymer nanofibers through electrospinning is challenging due to fiber entanglement, however, homogeneous CNT-filled PBu/PEO composite material shows improved physical properties. These composites can be used to create bio-composite scaffold and fibrous antibacterial membrane scaffolds with uniform diameter distribution.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Baran Sarac, Tolga Karazehir, Eray Yuce, Marlene Muehlbacher, A. Sezai Sarac, Juergen Eckert
Summary: Improving the efficiency of hydrogen storage and release using metallic glass nanofilms offers green solutions for nanoscale energy applications. Specific sizes and configurations of the hydrogen storage components demonstrate high electrochemical performance, with high specific pseudocapacitance and conductive behavior.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Baran Sarac, Tolga Karazehir, Matej Micusik, Celine Halkali, Dominik Gutnik, Maria Omastova, A. Sezai Sarac, Juergen Eckert
Summary: In transition metal-based alloys, nonlinearity in current at large cathodic potentials challenges the reliability of linear Tafel slopes for evaluating electrocatalytic hydrogen activity. High-precision nonlinear fitting at low current densities can overcome this challenge by describing the kinetics of electrochemical reactions due to charge transfer. The study demonstrates the practicality and high accuracy of a general evaluation criterion for assessing electrocatalytic reactions in different metallic alloy systems.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Ozan Yoruk, Yuksel Bayrak, Murat Ates
Summary: Superior performance of a ternary nanocomposite material consisting of TiO2 and rGO, added to PANI, was observed through various analysis and tests, showing enhanced specific capacitance, energy density, power density, and cycle life compared to individual components.
Review
Polymer Science
Murat Ates, Ozge Kuzgun, Idris Candan
Summary: This review article discusses the research and technological advancements of titanium-based materials in supercapacitors, with a focus on titanium carbide, titanium nitride, and titanium dioxide. It also highlights the various factors influencing the electrochemical performance of supercapacitor devices, and provides insights into future prospects and challenges in the field.
IRANIAN POLYMER JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Murat Ates, Ozan Yoruk, Yuksel Bayrak
Summary: In this study, a simple and cost-effective preparation method of rGO/Co3O4 nanocomposite was proposed. The electroactive materials were characterized by various techniques, and the nanocomposite showed excellent electrochemical performance at different monomer concentrations.
MATERIALS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Baran Sarac, Yurii P. Ivanov, Tolga Karazehir, Marlene Muehlbacher, A. Sezai Sarac, A. Lindsay Greer, Jurgen Eckert
Summary: The multilayer amorphous and crystalline Pd-Si based nanosheets demonstrate exceptionally high hydrogen storage capabilities when stacked in the right order, offering potential for enhanced hydrogen storage and production through smart design applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
M. Giray Ersozoglu, Hurmus Gursu, Selin Gumrukcu, A. Sezai Sarac, Yucel Sahin
Summary: The aim of this study is to convert commercial carbon fiber into heteroatom-doped graphene-like surfaced fibers through an eco-friendly and fast intercalation/semi-exfoliation mechanism, and to improve the hydrogen evolution reaction performance of the catalyst.
Article
Chemistry, Physical
Baran Sarac, Tolga Karazehir, Hans-Detlev Gilsing, Juergen Eckert, A. Sezai Sarac
Summary: The interactions between the electrolyte and electroactive species in redox active PProDOT derivatives are enhanced by better-performing electrodes for electrochemical energy conversion and storage. A new equation is proposed to assess the kinetics of the diffusion-limited adsorption process, and electron-donating groups attached to the monomer stabilize radical cation and dication formation. The findings of this study provide new insights into the factors requiring attention in tailoring assemblies for organic electronic applications.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2022)
Article
Polymer Science
Rumeysa Beyaz, Aysun Ekinci, Zuhal Yurtbasi, Mustafa Oksuz, Murat Ates, Ismail Aydin
Summary: The effects of metal and carbon based fillers on the properties of Polyamide 6,6 were investigated in this study. The results showed that the electrical and thermal conductivity as well as the mechanical properties of the composites were improved with the use of fillers. The hybrid fillers further enhanced the mechanical properties of the composites.
HIGH PERFORMANCE POLYMERS
(2023)
Review
Polymer Science
Murat Ates, Selin Karadag, Aysegul Akdogan Eker, Bulent Eker
Summary: This review article presents the industrial applications of polyurethane (PU) foam materials. PU foams have been used to replace metals and plastics in various engineering applications by combining the hardness and durability of metal with the flexibility of rubber. Different compositions and chemical factors can be used to synthesize PU foams with specific properties for different applications.
POLYMER INTERNATIONAL
(2022)
Article
Polymer Science
Aysun Ekinci, Mustafa Oksuz, Murat Ates, Ismail Aydin
Summary: This study investigates the effects of PP-g-MA compatibilizer on the thermal and mechanical properties of PP/rPET blends. The results show that increasing the amount of PP-g-MA improves the interfacial interactions between the polymers and enhances the strength and modulus of the blends.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Automation & Control Systems
Busra Al Menen, Aysun Ekinci, Mustafa Oksuz, Murat Ates, Ismail Aydin
Summary: The study investigated the effect of processing parameters on the properties of deflector parts made from a combination of recycled polypropylene (rPP) and ethylene propylene diene monomer (EPDM) through a two-component injection molding process. Post-industrial waste PP was used in varying amounts in the rPP/EPDM parts, and the dimensional, mechanical, thermal, and morphological properties of the parts were analyzed. The results showed that the dimensional stability and adhesion between rPP and EPDM were influenced by the processing parameters.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Polymer Science
Murat Ates, Ceylin Alperen
Summary: Polythiophene (PTh), reduced graphene oxide (rGO), and graphene oxide (GO) nanocomposites with carbon black (CB) have been synthesized and show promising potential for supercapacitors. The nanocomposites exhibit high electrical conductivity and specific capacitance, with the rGO/PTh/CB composite achieving the highest capacitance retention, energy density, and power density. The addition of PTh and CB to the GO material significantly increases the specific capacitance. This study demonstrates the successful use of rGO/PTh/CB nanocomposites for supercapacitor technology.
IRANIAN POLYMER JOURNAL
(2023)
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)
