Article
Thermodynamics
Xiaowei Wang, Wenqing Zhang, Tianyi Su, Zhijun Zhang, Shiwei Zhang
Summary: The research reveals the significant impact of NEAC and TMAC variations on flow fields, thermal fields, pressure, and Knudsen force, with a nonlinear relationship observed between Knudsen force and NEAC as well as TMAC. Decreasing accommodation coefficients lead to an increase in the slope of the curve for Knudsen force, highlighting the sensitivity of these parameters to rarefied gas flows.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Xiaowei Wang, Zhijun Zhang, Feng Han, Wenqing Zhang, Shiwei Zhang
Summary: The study investigates gas flows induced by inhomogeneous temperatures in a rarefied gas and the Knudsen force on structures using DSMC method with AI and VSS potentials. Results show significant differences between the predictions of the two potentials under specific conditions.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Physics, Multidisciplinary
Xiaowei Wang, Feng Han, Wenqing Zhang, Zhijun Zhang, Shiwei Zhang
Summary: This study numerically analyzes the rarefied gas flows triggered by temperature fields in the system of microbeams and investigates the effects of wall materials and roughness on the gas flow characteristics. The results indicate that the wall materials and surface roughness have an impact on the macroscopic characteristics of the gas flow, and the roughness of the cold beam surface weakens the effects of wall materials on Knudsen force.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Engineering, Aerospace
Deepak Nabapure, Ram Chandra K. Murthy
Summary: This study utilized DSMC method to analyze the rarefied gas flow over a forward-facing step, revealing that an increase in Knudsen number exacerbates surface properties and that flow recirculation lengths decrease with rarefaction.
Article
Optics
Lei Wang, Shige Wang, Qiuling Zhao, Xia Wang
Summary: Optical pulling is an attractive concept with counterintuitive features and promising applications. While optical pulling of micro-nano objects has been extensively studied in the past decade, pulling of macroscopic objects remains challenging. This study demonstrates laser pulling of a macroscopic object in a rarefied gas, where the pulling force originates from the Kundsen force induced by a gauss laser beam irradiating a macroscopic structure composed of absorptive graphene material and a SiO2 layer. The results expand the scope of optical pulling from the microscale to the macroscale and provide an effective technique for macroscopic optical manipulations.
Article
Engineering, Aerospace
D. Nabapure, A. Singh, R. C. M. Kalluri
Summary: This study focuses on exploring the various loads encountered by a re-entry vehicle passing through different altitudes covering different rarefaction regimes, using the direct simulation Monte Carlo (DSMC) method to examine the rarefied hypersonic flow over a backward-facing step (BFS). The influence of the Knudsen number on flow characteristics has been clarified, showing an increasing trend in normalised flow properties with the Knudsen number due to compressibility and viscous heating effects.
AERONAUTICAL JOURNAL
(2022)
Review
Automation & Control Systems
Hussein Hussein, Asrar Damdam, Liangjie Ren, Youssef Obeid Charrouf, Jack Challita, Mahdi Zwain, Hossein Fariborzi
Summary: The maturation of robotics research and advances in machine miniaturization have led to the development of microbots with various applications. Microbots can navigate confined spaces, monitor the environment, perform micro-assembly and manipulation, as well as conduct in vivo surgeries and drug delivery. Actuators, which play a critical role in robot performance, are comprehensively reviewed, with a focus on the most recent development and methodologies, including piezoelectric, magnetic, electrostatic, thermal, acoustic, biological, chemical, and optical actuation.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Yun Cao, Haotian Liu, Hao Chen, Hengbo Zhu, Weirong Nie, Zhanwen Xi
Summary: The study comprehensively investigated the dynamic thermal performance of MEMS electrothermal actuators using an infrared thermal microscope system, analyzing temperature distribution, heating and cooling performance, and frequency response under different waveform voltages. The established electro-thermo-structural coupling model showed fairly good agreement with the measured results through qualitative and quantitative comparisons.
IEEE SENSORS JOURNAL
(2021)
Article
Thermodynamics
Vasily Kosyanchuk, Stepan Konakov
Summary: This paper uses the Direct Simulation Monte Carlo method to study a new gas separation device prototype based on MEMS. The core part of the device is a microchannel with oscillating elements-barriers blocking the flow. The study investigates the influence of practical aspects on separation performance and shows that the separation factor can approach the Knudsen diffusion limit with the necessary number of barriers and feasible oscillation frequency.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Review
Engineering, Mechanical
Almothana Albukhari, Ulrich Mescheder
Summary: Due to reliability issues and limitations, commercial electrostatic actuators are limited to basic applications and cannot be scaled up to the macro range. To overcome these limitations, cooperative electrostatic actuator systems have been researched, including the hybrid cooperative architectures that incorporate another actuation principle. Among these architectures, inchworm motors show potential for bridging the micro to the macro range.
Article
Chemistry, Physical
Mohammad Alzgool, Mohammad Mousavi, Benyamin Davaji, Shahrzad Towfighian
Summary: This work demonstrates zero-power shock sensing using a micro-triboelectric generator and MEMS electrostatic actuator system. The generator converts mechanical shock into voltage, which is then utilized to actuate a MEMS switch. Through the integration of MEMS technology, the fabrication process of a Triboelectric-Nano-Generator (TENG) is presented for the first time. The TENG shows the ability to provide a voltage difference of up to 0.4V at 2.3g acceleration and successfully actuates a cantilevered MEMS switch.
Article
Chemistry, Analytical
Clint John Cortes Otic, Shigeru Yonemura
Summary: This paper proposes a mechanism for trapping and grasping micro-objects without physical contact by utilizing thermally induced Knudsen forces in a rarefied gas. The mechanism is achieved by the pressure differences induced by thermal edge flows, attracting the objects to a heated thin plate.
Article
Engineering, Electrical & Electronic
Jifeng Chu, Qiongyuan Wang, Yuyang Liu, Jianbin Pan, Huan Yuan, Aijun Yang, Xiaohua Wang, Mingzhe Rong
Summary: An improved approach to enhance the performance of single gas sensors is proposed using micro-electro-mechanical systems (MEMS) technology, which reduces power consumption without increasing physical volume. By combining short-period thermal modulation with periodic sampling, optimal features are extracted and the performance of neural networks is enhanced using stacked denoising autoencoder.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Nanoscience & Nanotechnology
Shogo Sugimoto, Hiroshi Sugimoto
Summary: The rarefied gas flow in a microscopic thermal transpiration pump fabricated by micro/nano-electro-mechanical systems is investigated using numerical analysis. The results show that the numerical model can reproduce experimental data and provide details of the three-dimensional flow structures for varying Knudsen numbers.
MICROFLUIDICS AND NANOFLUIDICS
(2022)
Article
Chemistry, Analytical
Zhichao Shi, Emile Martincic, Johan Moulin, Elie Lefeuvre, Frederic Lamarque
Summary: This paper presents the design and fabrication process of MEMS bistable buckled beam actuators, and proposes improved analytical models to predict their mechanical behavior.
Article
Chemistry, Organic
Zinatossadat Hossaini, Annataj Noushin, Peiman Valipour, Maryam Ghazvini, Mohammad Hosseinnasab Rostam
Summary: Fe3O4/ZnO/MWCNTs magnetic nanocomposites were used as a high-performance organometallic catalyst for the synthesis of naphthyridine derivatives in aqueous media. The catalyst showed improved yield of products and significant reusability. Moreover, some synthesized compounds exhibited antioxidant and antimicrobial activities.
POLYCYCLIC AROMATIC COMPOUNDS
(2022)
Article
Physics, Applied
Yu-Ming Chu, Rasoul Moradi, Amir Musa Abazari
Summary: The efficiency of heat transfer in heat exchangers in chemical and mechanical systems is significantly influenced by the presence of a non-uniform magnetic field. Increasing magnetic intensity enhances the Nusselt number, while increasing inlet velocity reduces the impact of magnetic effects on heat transfer.
MODERN PHYSICS LETTERS B
(2021)
Article
Chemistry, Physical
Yuelei Zhang, Puneet Rana, R. Moradi, Zhixiong Li
Summary: This study investigates the impact of coaxial injector arrays of hydrogen/air multi-jet on fuel mixing performance, aiming to optimize fuel distribution and penetration downstream in different operating conditions. The results show that the injection of coaxial air/hydrogen jet significantly enhances mixing downstream and the fuel jet space of 7 Dj offers maximum fuel mixing.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Physics, Multidisciplinary
Xiao-Yong Shen, M. Barzegar Gerdroodbary, Amir Musa Abazari, Rasoul Moradi
Summary: The study utilized computational simulations to uncover the effects of blood flow characteristics on the evolution and rupture of aneurysms in the internal carotid artery. The research aimed to identify the main causes for aneurysm rupture and pinpoint high-risk regions on the aneurysm wall. Findings suggest that aneurysm growth is directly related to its orientation and location, with internal wall shear stress being significantly lower than external stress.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Engineering, Aerospace
Guangli Fan, Adel Almarashi, Peixi Guo, Nidal H. Abu-Hamdeh, Abdullah M. Abusorrah, R. Moradi
Summary: The study investigates the impacts of high-velocity air stream interacting with cross fuel jet on fuel mixing and flame stability. Computational fluid dynamic method is used to model the flow structure, revealing that adding an inclined ramp upstream can enhance fuel mixing effectiveness and distribution uniformity.
AEROSPACE SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
M. Sadegh Rajabi, Rasoul Moradi, H. Pirouz Kavehpour
Summary: This review article provides a detailed introduction to the applications of nanotechnology in the oil and gas industry, including upstream, midstream, and downstream. The article highlights the advantages of nanotechnology in this industry and discusses the challenges it faces. The research findings demonstrate the potential of nanotechnology in improving efficiency.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2022)
Review
Biochemistry & Molecular Biology
Mehrnaz Entesari, Mina Zamani, Mohammad Heidarizadeh, Rasoul Moradi, Fatemeh Khakdan, Fariba Rafiei
Summary: The outbreak of COVID-19 pandemic has caused significant damage to the world, highlighting the urgent need for a quick and easily available biosensor for detection. Research has shown that using real-time RT-PCR assay with molecular beacons can improve the accuracy of detecting SARS-CoV-2 and distinguish between pathogenic and non-pathogenic strains of coronaviruses.
MOLECULAR BIOTECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Rasoul Moradi, Nazila Pour Khalili, Ni Luh Wulan Septiani, Chia-Hung Liu, Esmail Doustkhah, Yusuke Yamauchi, Slava V. Rotkin
Summary: Modern biosensor technologies are essential for detecting addictive and abused drugs, allowing accurate tracking and detection of trace levels of various drugs.
Article
Energy & Fuels
M. Sadegh Rajabi, Rasoul Moradi, H. Pirouz Kavehpour
Summary: Water flooding is a commonly used method for increasing oil recovery, and the salinity composition plays an important role in enhanced oil recovery. This study measured the interfacial tension between acidic heavy crude oil and different brine solutions, and investigated the effect of oil composition and water composition on the wettability of carbonate rock. Additionally, the use of silica nanoparticles as an agent for reducing interfacial tension and altering wettability was examined. The results showed that magnesium chloride at 1 M concentration had the lowest interfacial tension and the highest impact on wettability alteration. The application of silica nanoparticles showed insignificant effects in this study.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Biophysics
Amir Sabernaeemi, M. Barzegar Gerdroodbary, Sajad Salavatidezfouli, Peiman Valipour
Summary: The use of stent-assisted coiling for intracranial aneurysms may lead to the deformation of local vasculature. This study investigates the hemodynamic features of blood flow in four different types of intracranial aneurysms with and without stent intervention. The results show that stenting decreases blood velocity, wall pressure, and wall shear stress, while it has inconsistent effects on neck inflow rate among the aneurysms.
BIOMECHANICS AND MODELING IN MECHANOBIOLOGY
(2023)
Article
Chemistry, Applied
Siavash Afrashteh, Nazila Nouri, Parand Banihashem, Alireza Hoseinpour Kasgari, Peiman Valipour, Ehsan Binaeian
Summary: This study investigates the use of Zr-based MOF, UiO-66, modified by Dimethyl Ethylenediamine (UiO-66-mmen) as a carrier for anticancer drug MTX. The surface morphology and characteristics of the modified MOF were analyzed, and the optimal values of three parameters were determined. The results showed that UiO-66-mmen exhibited high MTX uptake efficiency and followed the Langmuir isotherm model. The mechanisms of MTX uptake and the thermodynamic properties were also studied.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Food Science & Technology
Kazhal Ebrahimi, Peiman Valipour, Mohammad Mirjalili, Habib-Allah Tayebi
Summary: This research aims to develop a multi-functional finishing method for cotton fabric to enhance properties such as self-cleaning, antibacterial, ultraviolet blocking, mechanical, and electrical conductivity. Zinc stannate nanophotocatalyst and reduced graphene oxide (RGO) were successfully synthesized and used for the treatment of cotton fabrics. The finished cotton samples exhibited self-cleaning properties under sunlight irradiation and showed excellent antibacterial activity against common pathogenic bacteria. The presence of RGO significantly improved the electrical conductivity of cotton fabrics, while the zinc stannate nanocomposite-coated cotton samples demonstrated strong photocatalytic self-cleaning activity.
Article
Engineering, Multidisciplinary
Zan -Hui Jin, M. Barzegar Gerdroodbary, P. Valipour, M. Faraji, Nidal H. Abu-Hamdeh
Summary: The coiling technique is the most significant and conventional option for treating an intracranial aneurysm. The effects of blood hemodynamics on the risk of aneurysm rupture are investigated through transient simulations of blood stream. The impacts of blood viscosity and coiling treatment on the distribution of WSS and OSI factors are comprehensively discussed.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Kazhal Ebrahimi, Peiman Valipour, Mohammad Mirjalili, Habib-Allah Tayebi
Summary: A single step process for in situ synthesis of graphene nanosheets and zinc stannate nanoparticles on cotton fabric was introduced and the properties of the nanocomposite were investigated. The samples were characterized by various techniques and it was found that both nanomaterials were successfully synthesized and attached to the cotton fibers. The nanocomposite showed improved photocatalytic activity, hydrophobicity, and antibacterial activity compared to the cotton fabric.
Article
Materials Science, Textiles
Peiman Valipour
Summary: A novel self-cleaning, antibacterial, and ultraviolet-resistant polyester fabric loaded with zinc stannate nanoparticles was prepared using an in situ sonochemical approach. The treated fabric displayed superior antibacterial activity, photo-catalytic self-cleaning property, and UV-blocking activity compared to the fabric treated with zinc oxide nanoparticles.
INDIAN JOURNAL OF FIBRE & TEXTILE RESEARCH
(2023)
Article
Engineering, Multidisciplinary
Sicheng Jiao, Shixiang Wang, Minge Gao, Min Xu
Summary: This paper presents a non-contact method of thickness measurement for thin-walled rotary shell parts based on a chromatic confocal sensor. The method involves using a flip method to obtain surface profiles from both sides of the workpiece, measuring the decentration and tilt errors of the workpiece using a centering system, establishing a unified reference coordinate system, reconstructing the external and internal surface profiles, and calculating the thickness. Experimental results show that the method can accurately measure the thickness of a sapphire spherical shell workpiece and is consistent with measurements of other materials.
Article
Engineering, Multidisciplinary
Rajeev Kumar, Sajal Agarwal, Sarika Pal, Alka Verma, Yogendra Kumar Prajapati
Summary: This study evaluated the performance of a CaF2-Ag-MXene-based surface plasmon resonance (SPR) sensor at different wavelengths. The results showed that the sensor achieved the maximum sensitivity at a wavelength of 532 nm, and higher sensitivities were obtained at shorter wavelengths at the expense of detection accuracy.
Article
Engineering, Multidisciplinary
Attilio Di Nisio, Gregorio Andria, Francesco Adamo, Daniel Lotano, Filippo Attivissimo
Summary: Capacitive sensing is a widely used technique for a variety of applications, including avionics. However, current industry standard Capacitive Level Sensors (CLSs) used in helicopters perform poorly in terms of sensitivity and dynamic characteristics. In this study, novel geometries were explored and three prototypes were built and tested. Experimental validation showed that the new design featuring a helicoidal slit along the external electrode of the cylindrical probe improved sensitivity, response time, and linearity.
Article
Engineering, Multidisciplinary
Kai Yang, Huiqin Wang, Ke Wang, Fengchen Chen
Summary: This paper proposes an effective measurement method for dynamic compaction construction based on time series model, which enables real-time monitoring and measurement of anomalies and important construction parameters through simulating motion state transformation and running time estimation.
Article
Engineering, Multidisciplinary
Hui Fu, Qinghua Song, Jixiang Gong, Liping Jiang, Zhanqiang Liu, Qiang Luan, Hongsheng Wang
Summary: An automatic detection and pixel-level quantification model based on joint Mask R-CNN and TransUNet is developed to accurately evaluate microcrack damage on the grinding surfaces of engineering ceramics. The model is effectively trained on actual micrograph image dataset using a joint training strategy. The proposed model achieves reliable automatic detection and fine segmentation of microcracks, and a skeleton-based quantification model is also proposed to provide comprehensive and precise measurements of microcrack size.
Review
Engineering, Multidisciplinary
Sang Yeob Kim, Da Yun Kwon, Arum Jang, Young K. Ju, Jong-Sub Lee, Seungkwan Hong
Summary: This paper reviews the categorization and applications of UAV sensors in forensic engineering, with a focus on geotechnical, structural, and water infrastructure fields. It discusses the advantages and disadvantages of sensors with different wavelengths and addresses the challenges of current UAV technology and recommendations for further research in forensic engineering.
Article
Engineering, Multidisciplinary
Anton Nunez-Seoane, Joaquin Martinez-Sanchez, Erik Rua, Pedro Arias
Summary: This article compares the use of Mobile Laser Scanners (MLS) and Aerial Laser Scanners (ALS) for digitizing the road environment and detecting road slopes. The study found that ALS data and its corresponding algorithm achieved better detection and delimitation results compared to MLS. Measuring the road from a terrestrial perspective negatively impacted the detection process, while an aerial perspective allowed for scanning of the entire slope structure.
Article
Engineering, Multidisciplinary
Nur Luqman Saleh, Aduwati Sali, Raja Syamsul Azmir Raja Abdullah, Sharifah M. Syed Ahmad, Jiun Terng Liew, Fazirulhisyam Hashim, Fairuz Abdullah, Nur Emileen Abdul Rashid
Summary: This study introduces an enhanced signal processing scheme for detecting mouth-click signals used by blind individuals. By utilizing additional band-pass filtering and other steps, the detection accuracy is improved. Experimental results using artificial signal data showed a 100% success rate in detecting obstacles. The emerging concepts in this research are expected to benefit radar and sonar system applications.
Article
Engineering, Multidisciplinary
Jiqiang Tang, Shengjie Qiu, Lu Zhang, Jinji Sun, Xinxiu Zhou
Summary: This paper studies the magnetic noise level of a compact high-performance magnetically shielded room (MSR) under different operational conditions and establishes a quantitative model for magnetic noise calculation. Verification experiments show the effectiveness of the proposed method.
Review
Engineering, Multidisciplinary
Krzysztof Bartnik, Marcin Koba, Mateusz Smietana
Summary: The demand for miniaturized sensors in the biomedical industry is increasing, and optical fiber sensors (OFSs) are gaining popularity due to their small size, flexibility, and biocompatibility. This study reviews various OFS designs tested in vivo and identifies future perspectives and challenges for OFS technology development from a user perspective.
Article
Engineering, Multidisciplinary
Yue Wang, Lei Zhou, Zihao Li, Jun Wang, Xuangou Wu, Xiangjun Wang, Lei Hu
Summary: This paper presents a 3-D reconstruction method for dynamic stereo vision of metal surface based on line structured light, overcoming the limitation of the measurement range of static stereo vision. The proposed method uses joint calibration and global optimization to accurately reconstruct the 3-D coordinates of the line structured light fringe, improving the reconstruction accuracy.
Article
Engineering, Multidisciplinary
Jaafar Alsalaet
Summary: Order tracking analysis is an effective tool for machinery fault diagnosis and operational modal analysis. This study presents a new formulation for the data equation of the second-generation Vold-Kalman filter, using separated cosine and sine kernels to minimize error and provide smoother envelopes. The proposed method achieves high accuracy even with small weighting factors.
Article
Engineering, Multidisciplinary
Tonglei Cao, Kechen Song, Likun Xu, Hu Feng, Yunhui Yan, Jingbo Guo
Summary: This study constructs a high-resolution dataset for surface defects in ceramic tiles and addresses the scale and quantity differences in defect distribution. An improved approach is proposed by introducing a content-aware feature recombination method and a dynamic attention mechanism. Experimental results demonstrate the superior accuracy and efficiency of the proposed method.
Article
Engineering, Multidisciplinary
Qinghong Fu, Yunxi Lou, Jianghui Deng, Xin Qiu, Xianhua Chen
Summary: Measurement and quantitative characterization of aging-induced gradient properties is crucial for accurate analysis and design of asphalt pavement. This research proposes the composite specimen method to obtain asphalt binders at different depths within the mixture and uses dynamic shear rheometer tests to measure aging-induced gradient properties and reveal internal mechanisms. G* master curves are constructed to investigate gradient aging effects in a wide range. The study finds that the composite specimen method can effectively restore the boundary conditions and that it is feasible to study gradient aging characteristics within the asphalt mixture. The study also observes variations in G* and delta values and the depth range of gradient aging effects for different aging levels.
Article
Engineering, Multidisciplinary
Min Li, Kai Wei, Tianhe Xu, Yali Shi, Dixing Wang
Summary: Due to the limitations of ground monitoring stations in China for the BDS, the accuracy of BDS Medium Earth Orbit (MEO) satellite orbits can be influenced. To overcome this, low Earth orbit (LEO) satellites can be used as additional monitoring stations. In this study, data from two LEO satellites were collected to improve the precise orbit determination of the BDS. By comparing the results with GPS and BDS-2/3 solutions, it was found that including the LEO satellites significantly improved the accuracy of GPS and BDS-2/3 orbits.
