Article
Biochemical Research Methods
Nanxin Yu, Wenping Geng, Yukai Liu, Huiyi Zhang, Hao Lu, Zhigang Duan, Lingxiao Yang, Yichi Zhang, Xiujian Chou
Summary: In this study, a reflector-interdigital transducer (R-IDT) acoustofluidic device based on unilateral coherence enhancement is proposed to achieve SSAW definition features of periodic particle capture positions. The device combines leaky-SAW and spherical waves to create a time-averaged spatial periodicity, accurately predicting the lateral spacing of these positions. The R-IDT structure enhances amplitude and improves particle manipulation range, confirmed by experimental verification.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Mechanics
Guangyuan Su, Yunhao Zhang, Yongquan Liu, Tiejun Wang
Summary: Elastic metasurfaces have potential to manipulate elastic waves, but current technologies are limited in wave control. This study introduces a new generation of elastic metasurfaces incorporating amplitude discontinuities, allowing for more flexible wave manipulation. Experimental validation on two amplitude-shift metasurfaces for flexural waves demonstrates successful wave control.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2021)
Article
Physics, Multidisciplinary
Marek Gluza, Per Moosavi, Spyros Sotiriadis
Summary: Studying inhomogeneous TLLs, where the propagation velocity and Luttinger parameter become functions of position, it is found that they have profound effects on the dynamics. Specifically, if the Luttinger parameter depends on position, pronounced spreading into the light cone occurs. This is observed in ultracold atoms in a parabolic trap.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Letter
Chemistry, Multidisciplinary
Ning Liu, Oleg Mikhailovskii, Nikolai R. Skrynnikov, Yi Xue
Summary: A pipeline based on molecular dynamics (MD) has been developed to emulate the process of determining protein crystallographic structures from diffraction photographs. Using a lysozyme structure as a template, a supercell containing 125 crystal unit cells with 1000 protein molecules and solvent was constructed. MD trajectories at 298 K and 250 K were simulated and used to generate diffraction photographs, which were then fed into the standard pipeline for structure determination. The resulting structures were highly consistent with the MD model and the original experimental structure. This methodology has potential applications in refining crystal structures and extracting dynamic information from diffraction data or diffuse scattering.
Article
Materials Science, Multidisciplinary
Wen Zuo, Ya-Shuai Han, Zheng-Lan Zhou, Hua-Feng Xu, Zheng-Xian Zhou, Jun Qu
Summary: In this study, we numerically investigated the capture of particles with different refractive-indexes using focused partially coherent Lommel-Gaussian beam (PCLGB). By adjusting the optical and lens parameters, stable and wide-range trapping can be achieved. The results obtained have potential applications in micromanipulation technology and biotechnology.
RESULTS IN PHYSICS
(2022)
Article
Instruments & Instrumentation
Jiayi Sun, Zhijun Chi, Yingchao Du, Renkai Li, Wenhui Huang, Chuanxiang Tang
Summary: This paper introduces a simulation method of gamma-ray phase contrast imaging (PCI) based on the combination of Monte Carlo simulation and wave optics. The feasibility of this method is verified by comparing the simulation result of Young's double-slit experiment. A simulation of a concentric metal sample is carried out to demonstrate the potential of gamma-ray PCI, and the edge enhancement effect is observed at the interfaces of the sample. The simulation results preliminarily verify the feasibility of gamma-ray PCI for metallic materials.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Engineering, Electrical & Electronic
Hedieh Ajam, Marzieh Najafi, Vahid Jamali, Bernhard Schmauss, Robert Schober
Summary: This paper investigates the modeling and design of intelligent reflecting surface (IRS)-assisted optical communication systems. A new analytical channel model is developed to capture the impact of IRS characteristics on the end-to-end channel. Three different protocols are proposed for the sharing of the optical IRS. The performance of the proposed protocols is analyzed through bit error rate and outage probability.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Physics, Applied
Hao Ge, Zi-Wei Long, Xiang -Yuan Xu, Jin-Guo Hua, Yang Liu, Bi-Ye Xie, Jian-Hua Jiang, Ming-Hui Lu, Yan-Feng Chen
Summary: This study reports on the direct measurement of the local density of states (LDOS) in acoustic systems. The LDOS in acoustics is quantified through the measurement of volume flow rate and acoustic pressure. The results unveil the role of LDOS in acoustic phenomena and pave the way for controlling and characterizing LDOS for various applications in acoustic emission control, energy localization, and wave-matter interaction.
PHYSICAL REVIEW APPLIED
(2023)
Article
Optics
Mahdi Habibpour, Parviz Parvin, Reza Amrollahi
Summary: In this study, a homemade gold fineness analyzer based on CF SA-LIBS was fabricated, showing enhanced relative signal intensity by 1 order of magnitude. The technique allows for more accurate determination of ionic species concentrations, resulting in analytical errors of less than 0.5% for gold karat assessment. Additionally, single-shot SA-LIBS benefits from smaller ablative mass compared to standard LIBS.
Article
Optics
Zhang Ying, Ma Chao-qun, Zhu Shi-jun, Liu Xiao-xu, Cai He, An Guo-fei, Wang You
Summary: This paper investigates the influence of atmospheric turbulence on the optical properties of a laser beam, using a twisted Laguerre-Gaussian correlated beam to derive the cross-spectral density function for propagation. Numerical simulations and comparisons with different parameters show that a beam with high twist factor, low transverse parameter, and high mode order can effectively suppress the impact of atmospheric turbulence.
Article
Chemistry, Analytical
Rui Yang, Shangru Yang, Yao Lin, Yubin Su, Yuanyuan Li, Chengbin Zheng
Summary: A novel and accurate strategy for the quantitative analysis of dissolved oxygen (DO) in natural water samples was proposed in this study, based on selective oxidation reaction and miniature point discharge optical emission spectrometry (mu PD-OES). The method showed simplicity, speed, and high efficiency, and was successfully applied to tap water, river water, and lake water samples for DO determination, with results in good agreement with a Chinese national standard method.
MICROCHEMICAL JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Bin Liu, Yuxi Ruan, Yanguang Yu
Summary: Self-mixing interferometry (SMI) is a promising non-destructive sensing technology with advantages of simplicity in system structure and high resolution in measurement. In this article, an all-fiber SMI linear sensor for real-time tracking acoustic emission (AE) signals is designed, showing comparable AE detection capability to piezoelectric sensor.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Kaita Ito, Masahiro Kusano, Masahiko Demura, Makoto Watanabe
Summary: A novel method for real-time monitoring of microdefects generation during selective laser melting (SLM) has been developed using battery-powered equipment capable of recording and transmitting acoustic emission (AE) waveforms. The method was proven effective in detecting microcracks and pores as the origin of defects in single-layer modeling tests. This novel AE monitoring technique showed potential for improving the SLM process.
ADDITIVE MANUFACTURING
(2021)
Article
Engineering, Electrical & Electronic
Luke Smith, Zhichao Li, Steve Dixon
Summary: Clamp-on ultrasonic transit time difference flow meters provide a solution for metering without cutting into existing pipelines. By considering design features such as a curved contact face and a scattering surface, unwanted ultrasonic modes can be minimized. However, minimizing these modes does not offer any advantage for transit time difference measurement.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
S. Chib, F. Khannous, A. Belafhal
Summary: In this study, the analytical analysis of the propagation of GMvHchGB beam in maritime atmospheric turbulence was conducted using the extended Huygens-Fresnel principle. Numerical simulations showed that the beam underwent shape changes when passing through the medium under different parameter settings. The impact of incident parameters on the beam, such as Gaussian waist, Cosh parameter, hollowness, and order, was also numerically analyzed.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Dentistry, Oral Surgery & Medicine
R. D. Pereira, A. D. C. M. Valdivia, A. A. Bicalho, S. D. Franco, D. Tantbirojn, A. Versluis, C. J. Soares
OPERATIVE DENTISTRY
(2015)
Article
Dentistry, Oral Surgery & Medicine
R. A. S. Pereira, A. A. Bicalho, S. D. Franco, D. Tantbirojn, A. Versluis, C. J. Soares
OPERATIVE DENTISTRY
(2016)
Article
Engineering, Mechanical
M. A. F. de Moraes, J. Bertholdi, R. V. Arencibia, F. F. Ramos Neto, S. D. Franco
Article
Automation & Control Systems
Luciano Jose Arantes, Karina Alves Fernandes, Cristiano Rafael Schramm, Jose Eduardo Silveira Leal, Antnio Piratelli-Filho, Sinesio Domingues Franco, Rosenda Valdes Arencibia
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2017)
Article
Engineering, Mechanical
R. Mascia, F. F. Ramos Neto, T. F. Barbosa Neto, S. D. Franco
Article
Engineering, Mechanical
F. J. da Silva, R. R. Marinho, M. T. P. Paes, S. D. Franco
Article
Automation & Control Systems
Guilherme Henrique Caetano Barros, Cristiano Rafael Schramm, Sinesio Domingues Franco, Luciano Jose Arantes, Rosenda Valdes Arencibia
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2019)
Article
Engineering, Mechanical
Marcus Vinicius Rezende Junior, Jose Eduardo Silveira Leal, Raphael Rezende Pires, Marcelo Torres Piza Paes, Francisco Francelino Ramos Neto, Sinesio Domingues Franco, Rosenda Valdes Arencibia
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2019)
Article
Materials Science, Characterization & Testing
Marcus Vinicius Rezende Junior, Marcelo Torres Piza Paes, Waldek Wladimir Bose Filho, Rosenda Valdes Arencibia, Sinesio Domingues Franco
Summary: The study investigated the effects of cross section and notch radius on the susceptibility to hydrogen embrittlement of AISI 4140 steel, finding significant impacts of cross section on S-FFs values and hardness as well as the interaction between hardness and cross section on hydrogen embrittlement. The incremental step loading technique requires fewer specimens for evaluation when large strain constraints are applied.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Materials Science, Characterization & Testing
Danilo Eduardo Fonseca Souza, Jose Eduardo Silveira Leal, Waldek Wladimir Bose Filho, Rosenda Valdes Arencibia, Sinesio Domingues Franco
Summary: Hydrogen embrittlement affects a wide range of metal alloys in the industry, and the use of incremental step loading technique or development of new methods can effectively evaluate HE susceptibility, particularly for metallic materials with hardness less than 33 HRC.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Materials Science, Characterization & Testing
Guilherme Bernardes Rodrigues, Marcelo Torres Piza Paes, Francisco Francelino Ramos Neto, Sinesio Domingues Franco, Rosenda Valdes Arencibia, Waldek Wladimir Bose Filho
Summary: The SNTT method is a promising approach for determining fracture toughness parameter, but its application is still restricted. This study aims at organizing existing information and presenting detailed test charts and techniques for experimental research conducted using the SNTT method.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Chemistry, Physical
Guilherme Antonelli Martiniano, Eduardo Silveira Leal, Guilherme Soares Rosa, Waldek Wladimir Bose Filho, Marcelo Torres Piza Paes, Sinesio Domingues Franco
Summary: This study analyzed the hydrogen embrittlement susceptibility of a modified AISI 4130 steel through incremental step loading tests and found that the dual-phase microstructure exhibited the lowest susceptibility, while martensite with large prior austenite grains showed the highest susceptibility. The difference in susceptibility was attributed to the fraction of high-angle boundaries and the local deformation of ferrite in the microstructures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Multidisciplinary
Luiz Fernando Maia de Almeida, Sonia Aparecida Goulart Oliveira, Marcelo Torres Piza Paes, Francisco Francelino Ramos Neto, Sinesio Domingues Franco, Rosenda Valdes Arencibia
Summary: This study evaluated the effect of test velocity on ultimate tensile strength using the Small Punch Test. Results showed that reducing the test velocity from 1.0 mu m/s to 0.1 mu m/s increased susceptibility to hydrogen embrittlement, with significant effects on the ultimate tensile strength only observed in 4137 M steel. The different behaviors of the steels were attributed to a combination of factors including test velocity, non-metallic inclusion, calcium addition, tensile strength, and hardness.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2021)
Proceedings Paper
Robotics
Denis Soares Freitas, Vera Lucia D. S. Franco, Sinesio D. Franco, Marcelo Torres Piza Paes, Ricardo R. Marinho
2015 12TH LATIN AMERICAN ROBOTICS SYMPOSIUM AND 2015 3RD BRAZILIAN SYMPOSIUM ON ROBOTICS (LARS-SBR)
(2015)
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.