Article
Biochemistry & Molecular Biology
Erik Cerrato, Alberto Privitera, Mario Chiesa, Enrico Salvadori, Maria Cristina Paganini
Summary: Due to its thermal stability, conductivity, high exciton binding energy and high electron mobility, zinc oxide is one of the most studied semiconductors in the field of photocatalysis. Doping the lattice with foreign atoms can introduce defects within the bandgap, making zinc oxide optically active in the visible range and reducing the energy required for photo-driven charge separation. This study demonstrates a green synthetic procedure for achieving high-level doping and highlights the importance of thermal treatment in selecting the nature of the defect and the material's capability for specific chemistry. The low-temperature treatments were found to produce material with higher efficiency in the water photosplitting reaction.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Polymer Science
Tan Mao, Mengchen Liu, Liyuan Lin, Youliang Cheng, Changqing Fang
Summary: This paper summarizes the recent research on zinc oxide photocatalysts at home and abroad, introduces the methods of doping and compounding with other substances, and discusses the prospects of further improving catalytic efficiency.
Article
Chemistry, Physical
Di Li, Youye Dai, Lingyan Kong, Yuanxiang Gu, Lei Wang
Summary: A (NH4)2(S((S2)Mo(S2))3)/vanadium oxide/graphene oxide composite is synthesized via hydrothermal method and used as the cathode material for aqueous zinc ion batteries. After the first charging/discharging process, a novel vanadium-based cathode is formed, which exhibits excellent electrochemical properties due to the synergistic effect of molybdenum ion doping and graphene oxide supporting. The cathode material shows high discharge capacity, good cycling performance, and high capacity retention.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Saqib, Shams ur Rahman, Shahid Ali, Safyan Akram Khan, Bushra Ismail, Asad Muhammad Khan
Summary: The development and functionalization of zinc oxide nanostructures for the degradation of organic pollutants were studied. The doping of transition metal ions significantly improved the photocatalytic activity of zinc oxide. The optimized metal-doped zinc oxide showed high absorption capacity and degradation efficiency under visible light.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Sulaiman S. A. Al Ghafry, Mohammed Z. Al-Abri, Basim Al Farsi, Faisal Al Marzouqi, Lamia M. Al Farsi, Nur Adilah Roslan, Azzuliani Supangat
Summary: This study successfully synthesized pristine and gallium doped ZnO nanorods using rapid microwave-assisted method, and investigated the effects of different doping levels. The results showed significant changes in the morphology, crystalline size, and surface roughness of the nanorods with Ga doping. The 1% Ga doping sample exhibited significant enhancement in visible light absorption and rapid degradation.
Article
Materials Science, Multidisciplinary
Sulaiman S. A. Al Ghafry, Hamood Al Shidhani, Basim Al Farsi, R. G. Sumesh Sofin, Abdullah S. Al-Hosni, Zahra Alsharji, Jamal Al-Sabahi, Mohammed Z. Al-Abri
Summary: The contamination of water resources is a major environmental concern, especially the presence of hazardous pollutants such as phenol. Therefore, developing cost-effective techniques to remove phenol from water is crucial. This study investigated the use of silver-doped zinc oxide nanorods (Ag-ZnO NRs) for the degradation of phenol under sunlight. The synthesized Ag-ZnO NRs exhibited two distinct structures, hexagonal and cubic, and their optical properties showed significant improvement due to silver doping. The 0.5% Ag-doped ZnO NRs showed the highest photocatalytic activity, achieving a degradation rate of 98.5% for phenol removal under solar light irradiation after 5 hours.
Article
Chemistry, Analytical
Shilpa Rana, Amandeep Kaur, Anu Bharti, Suman Singh, Archana Bhatnagar, Nirmal Prabhakar
Summary: A novel spiegelmer-based biosensor has been developed for the detection of hepcidin in human serum samples, showing high sensitivity and stability. The sensor utilizes a specific thiolated spiegelmer immobilized on a nanocomposite and is evaluated using electrochemical impedance spectroscopy, demonstrating promising applicability for clinical monitoring of hepcidin.
ANALYTICA CHIMICA ACTA
(2021)
Article
Engineering, Chemical
R. N. Dalila, M. K. Md Arshad, Subash C. B. Gopinath, Conlathan Ibau, M. M. N. Nuzaihan, M. F. M. Fathil, U. Z. Mohd Azmi, Periasamy Anbu
Summary: A label-free Faradaic electrochemical impedimetric was developed for highly sensitive detection of C-reactive protein (CRP) using a gold interdigitated microelectrode biosensing platform enhanced by a gold nanoparticle-decorated molybdenum disulfide (Au-NPs/MoS2) nanosheet. The developed immunoassay showed a linear detection range of CRP and demonstrated excellent performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Carolina Sayury Miyashiro, Safia Hamoudi
Summary: This study investigates the photocatalytic degradation of acetamiprid using visible light irradiation. The results show that ZnO photocatalyst doped with palladium and graphene oxide has a positive effect on the photocatalytic activity of acetamiprid. Furthermore, Pd-GO-doped ZnO catalyst exhibits good stability even after five cycles of recycling in the reaction medium.
Article
Chemistry, Physical
Pierre G. Ramos, Juan Espinoza, Luis A. Sanchez, Juan Rodriguez
Summary: This study investigates the use of transition metal-doped zinc oxide/reduced graphene oxide (ZnO/rGO) nanostructures for photocatalytic applications. A cost-effective electrospinning-assisted hydrothermal method is proposed to synthesize these nanostructures. The results show that the doping of transition metals and the presence of rGO improve the photocatalytic activity of ZnO, by enhancing the separation of photogenerated electron-hole pairs and inhibiting their recombination. Despite challenges in controlling the doping process, transition metal-doped ZnO/rGO nanostructures show promise for efficient and sustainable photocatalytic applications in the future.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Juqin Zeng, Marco Fontana, Adriano Sacco, Daniele Sassone, Candido F. Pirri
Summary: The composition of the catalyst layer greatly affects the mass diffusion rate and accessibility of active sites in the carbon dioxide reduction reaction (CO2RR). While efforts have been dedicated to cathode material development, little research has focused on maximizing electrode performance for CO2RR. This study thoroughly investigates the key electrode components and their effects on CO2RR performance.
Article
Energy & Fuels
Juan Valle-Pulido, Omar E. Solis, Diego Esparza, Ruben Arturo Rodriguez-Rojas, Silver-Hamill Turren-Cruz, Jesus Manuel Rivas, Isaac Zarazua
Summary: In this study, different types of perovskite solar cells were prepared and subjected to a 60-day ageing process to investigate their stability. The results showed that the samples with 8.5% MABr3 retained 92.89% of the initial efficiency after ageing, while the samples without MABr3 only retained 50.32% of the initial efficiency. Electrochemical impedance studies revealed that the formation of Cs segregates in the samples with MABr3 promoted beneficial rearrangement of the crystalline structure, which maintained or even improved the photocurrent density. This research is significant in understanding the impact of doping on degradation processes and characterizing the changes in electrical and ionic dynamics of solar cells using Impedance Spectroscopy.
Article
Materials Science, Ceramics
Robert Peter, Ales Omerzu, Ivna Kavre Piltaver, Renato Speranza, Kresimir Salamon, Matejka Podlogar, Karlo Velican, Marko Percic, Mladen Petravic
Summary: In this study, we investigated the photocatalytic activity of ZnO thin films doped with copper atoms during film growth using atomic layer deposition. The results showed that the doped ZnO films exhibited enhanced optical absorption in the visible region, leading to a significant improvement in photocatalytic efficiency under simulated sunlight irradiation.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Simona Tuckute, Sarunas Varnagiris, Marius Urbonavicius, Emilija Demikyte, Kristina Bockute, Martynas Lelis
Summary: ZnO is an important industrial metal oxide semiconductor. Reactive magnetron sputtering under Zn-rich conditions promotes the formation of intrinsic ZnO defects, resulting in the deposition of metallic Zn phase-rich ZnO films that exhibit superior photocatalytic efficiency compared to traditional ZnO oxide. This intentional formation of intrinsic ZnO defects can be considered advantageous self-doping. The addition of extrinsic dopants, such as copper or carbon, further modifies the microstructure of the films, with carbon having a positive effect on photocatalytic efficiency.
Article
Chemistry, Multidisciplinary
David C. Moore, Ali Jawaid, Robert Busch, Michael Brothers, Paige Miesle, Adam Miesle, Rahul Rao, Jonghoon Lee, Lucas K. Beagle, Michael Motala, Shay Goff Wallace, Julia R. Downing, Ajit Roy, Christopher Muratore, Mark C. Hersam, Richard Vaia, Steve Kim, Nicholas R. Glavin
Summary: Chemical sensors based on solution-processed 2D nanomaterials are highly sensitive, capable of detecting NO2 gas at concentrations as low as 1 ppb, while bypassing traditional interflake interactions in favor of selectively extracting intraflake doping effects. This approach allows for an all solution-processed, flexible 2D sensor to be fabricated with similar sensitivity limits, and a thermal annealing strategy can further improve sensitivity by 2x at 200 degrees C.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
M. Karyaoui, D. Ben Jemia, M. Daoudi, A. Bardaoui, A. Boukhachem, M. Amlouk, R. Chtourou
Summary: This paper investigates the physical properties of graphene oxide-doped zinc oxide thin films, finding that 2% GO doping demonstrates the best optoelectrical properties and has potential for future optoelectronic applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Physics, Multidisciplinary
D. Ben Jemia, M. Karyaoui, M. A. Wederni, A. Bardaoui, M. Martinez-Huerta, M. Amlouk, R. Chtourou
Summary: This study investigated the impact of silver plasmon and reduced graphene oxide on the photoelectrochemical performance of ZnO thin films, finding that ZnO:Ag/rGO photo-anodes exhibited higher photocurrent density.
Article
Physics, Condensed Matter
Taher Ghrib, Nouf K. AL-Saleem, Aishah AL-Naghmaish, Abdelhafeez A. Elshekhipy, Sami Brini, Khaoula Briki, Khaled A. Elsayed
Summary: The Cu2O/TiO2/Cu2O/TiO2/Si heterojunction was synthesized by sol-gel spin coating technique and annealed at different temperatures. The annealing temperatures had significant effects on the microstructural, optical, electrical, and thermal properties of the heterojunctions. The annealing process resulted in crystallization, decreased band gap, increased photoluminescence intensity, higher forward current density, and enhanced thermal conductivity.
MICRO AND NANOSTRUCTURES
(2022)
Article
Environmental Sciences
Marwa Akkari, Afrah Bardaoui, Mohamed Amine Djebbi, Abdesslem Ben Haj Amara, Radhouane Chtourou
Summary: This study focused on the development and characterization of Ag-ZnO/sepiolite photocatalysts. The results showed that the Ag-ZnO/sepiolite photocatalysts prepared by a simple hydrothermal route exhibited enhanced photocatalytic activity, with the sample doped with 5% Ag showing the best performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Souha Aouini, Afrah Bardaoui, Diogo M. F. Santos, Radhouane Chtourou
Summary: CuMn2O4 with spinel structure was successfully synthesized on a stainless steel mesh by a one-pot hydrothermal method, showing excellent electrochemical performance as a supercapacitor electrode.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Nouf K. AL-Saleem, Taher Ghrib, Aishah AL-Naghmaish, Abdelhafeez A. Elshekhipy, Nawal Almalki, Nabil Gmati, Najoua Kamoun Turki
Summary: The study investigated the effects of pore size on the properties of nickel foam coated with graphene thin film, showing changes in electrical, optical, and thermal properties with decreasing pore size. Electrical conductivity increased, specific capacitance increased, and dielectric permittivity decreased as the pore size decreased.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Energy & Fuels
Souha Aouini, Afrah Bardaoui, Ana M. Ferraria, Diogo M. F. Santos, Radhouane Chtourou
Summary: ZnMn2O4 spinels were prepared by a simple hydrothermal route, and the reaction time had a significant impact on the structural and morphological parameters. Longer reaction times resulted in spinel samples with a tetragonal structure, high crystallinity, and larger crystallite size. The samples exhibited a pyramid morphology and good crystalline properties.
Article
Chemistry, Physical
Noha A. Saleh, Muna Y. Alqahtani, M. H. A. Mhareb, Filiz Ercan, Taher Ghrib, Tarek S. Kayed, Bekir Ozcelik, Ismail Ercan, Fatimah ALbazzaz, Reem Alanazi, Maram Al-Quadrah, Noor Al-Drweesh
Summary: The Mg2FeTi1-xCexO6 ceramics with different Ce concentrations were prepared by solid-state technique for gamma radiation shielding. The nanomaterials were characterized for their structural and optical properties, and the Ce-doped compounds showed a tetragonal crystal structure. The magnetization of the samples increased with Ce doping, and various radiation shielding parameters for gamma-rays, neutrons, and protons were evaluated. The results demonstrated that the sample with x = 10% exhibited the highest shielding properties for gamma, proton, and neutron, making it suitable for radiation shielding applications.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Multidisciplinary
Hanen Abdelli, Houeida Issa Hamoud, Juan Pablo Bolletta, Arnold Paecklar, Afrah Bardaoui, Krassimir L. Kostov, Ewelina Szaniawska, Antoine Maignan, Christine Martin, Mohamad El-Roz
Summary: A highly efficient CuFe2O4-based photocatalyst is reported for the photo-catalytic dehydrogenation of formic acid under visible light at room temperature. The catalyst exhibits high selectivity and stability, making it a promising material for photocatalytic dehydrogenation. This study provides a new route to design cost-effective Cu-based photocatalysts for visible-light driven reactions.
APPLIED MATERIALS TODAY
(2023)
Article
Chemistry, Analytical
Rabiaa Elkarous, Afrah Bardaoui, Jerome Borme, Nabil Sghaier, Pedro Alpuim, Diogo M. F. Santos, Radhouane Chtourou
Summary: This study proposes a high-performance asymmetric gold/graphene/platinum photodetector that operates without bias. It incorporates interdigitated metallic contacts to enhance the separation and collection of photocarriers. By utilizing chemical vapor deposition and electron-beam lithography, three devices with different dimensions were fabricated and evaluated for their photoresponsivities at different wavelengths. The 100 μm device exhibited the highest photoresponsivity of 358 A/W at 400 nm illumination. These findings demonstrate the potential of the proposed design to increase the active area, improve light absorption, and achieve efficient separation and collection of photogenerated carriers, making it highly relevant for optoelectronic applications.
Article
Chemistry, Inorganic & Nuclear
Afrah Bardaoui, Asma Hammami, Rabiaa Elkarous, Mohamed Ali Aloui, Rania Oueslati, Olfa Messaoud, Diogo M. F. Santos, Radhouane Chtourou
Summary: Understanding and regulating DNA interactions with solvents and redox-active centers can lead to improved electrochemical signals and biosensor development. This study presents the development of a graphene-modified indium tin oxide (ITO) electrode for double-stranded DNA detection. The modified electrode exhibited enhanced electrical conductivity and altered electrochemical response when the number of base pairs increased. The proposed method shows potential for replacing nucleic acid gel electrophoresis for DNA fragment detection and size quantification.
Article
Physics, Condensed Matter
Aishah Al-Naghmaish, Taher Ghrib, Hassen Dakhlaoui, Nouf K. AL-Saleem, Filiz Ercan, Tarek S. Kayed, Erdem Elibol, Ismail Ercan, Mesut Yildiz, Abdelhafeez A. Elshekhipy, Nawal Almalki
Summary: The characteristics of Al0.1Ga0.9As nano-films with different thicknesses on GaAs substrate were studied. The effects of Al0.1Ga0.9As thickness on thermal properties were analyzed using SEM, XRD, UV-Visible spectrophotometry, PL, EIS, and PTD techniques. The results showed that the Al0.1Ga0.9As thickness influenced the thermal conductivity and sensitivity to structural changes. The Al0.1Ga0.9As/GaAs system has potential applications in photoelectric and thermoelectric devices.
MICRO AND NANOSTRUCTURES
(2023)
Article
Multidisciplinary Sciences
Taher Ghrib, Filiz Ercan, T. S. Kayed, Tahani H. Flemban, Mesut Yildiz, Omer Kaygili, Ismail Ercan
Summary: The study reported the investigation of structural, microstructural, optical, dielectric, and magnetic properties of three double perovskite materials synthesized by solid-state reaction. The materials exhibited monoclinic crystal structure and consistent elemental mappings with sample concentrations. The research showed the potential of the materials for microelectronic applications in circuit devices.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Imene Gritli, Afrah Bardaoui, Jamila Ben Naceur, Salah Ammar, Mohammad Abu Haija, Sherif Mohamed Abdel Salam Keshk, Radhouane Chtourou
Summary: Porous magnetite and hematite nanoparticles were successfully prepared via the sol-gel auto-combustion method, with properties dependent on the starch content, exhibiting different crystal structures, morphologies, and specific surface areas.
TURKISH JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
A. Mabrouki, O. Messaoudi, M. Mansouri, S. Elgharbi, A. Bardaoui
Summary: This paper presents a correlation between experimental and theoretical approaches to study the properties of La0.5Ca0.5Mn0.9V0.1O3, finding that the compound exhibits semi-metallic behavior and high light absorption characteristics. Additionally, the study delves into the relationship between magnetic properties and high hydration among different elements in the compound.
Article
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)