Review
Chemistry, Physical
Dongan Liu, Limei Hao, Weiren Zhu, Xiao Yang, Xiaole Yan, Chen Guan, You Xie, Shaofang Pang, Zhi Chen
Summary: This paper reviews the recent research progress of acoustic metasurfaces, including design mechanisms, applications, and future research interests.
Review
Materials Science, Multidisciplinary
Guosheng Ji, John Huber
Summary: Acoustic metamaterials, artificial structures designed to produce unconventional reflection and refraction indices, are gaining prominence in engineering applications. This article provides an overview of recent research progress in acoustic metamaterials, covering passive acoustic metamaterials and active piezoelectric acoustic metamaterials. The topics discussed include their definition, mechanisms, classification, structure, and potential applications. The article also addresses current technical challenges and future prospects in the field.
APPLIED MATERIALS TODAY
(2022)
Article
Engineering, Civil
Mohamad Basel Al Sawaf, Kiyosi Kawanisi, Gillang Noor Nugrahaning Gusti, Faruq Khadami, Cong Xiao, Masoud Bahreinimotlagh
Summary: In this study, flood dynamics were monitored using the fluvial acoustic tomography system (FAT), and new equations were proposed to evaluate the expected flow direction. The results showed that the minimum number of acoustic stations required to determine river flow direction in unidirectional streams can be reduced to three, which is more practical and convenient. The study also provided new guidelines for continuously estimating flow direction using a triangular distribution of tomographic systems.
JOURNAL OF HYDROLOGY
(2023)
Review
Materials Science, Multidisciplinary
Mosab Kaseem, Siti Fatimah, Nisa Nashrah, Young Gun Ko
Summary: This review discusses the development of metallic materials with excellent surface properties through plasma electrolytic oxidation, focusing on scientific principles, microstructural features, protective characteristics, and functional applications of the coating. Various benign approaches to improve the structural and functional properties of coating layers are also described.
PROGRESS IN MATERIALS SCIENCE
(2021)
Article
Chemistry, Analytical
Mariya Aleksandrova, Dimiter Badarov
Summary: This paper provides an overview of the latest achievements in surface acoustic wave (SAW) sensors for gas or liquid fluid, focusing on the topology of electrodes and signal processing relevant to sensing device application. The organization of interdigital (IDT) electrodes is essential in determining the acoustic wave distribution mode and improving SAW performance. The signal conditioning system plays a practical role in the implementation of compact and mobile SAW systems. The precision of SAW platform detection is influenced by both the geometry and location of IDT electrodes around the sensing layer.
Review
Materials Science, Multidisciplinary
Weiming Ji, Runhua Zhou, Priyanka Vivegananthan, Mao See Wu, Huajian Gao, Kun Zhou
Summary: This review critically evaluates the latest research on gradient-structured metals and alloys, summarizing their fabrication techniques, strengthening mechanisms, mechanical properties, and discussing potential applications and prospects.
PROGRESS IN MATERIALS SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Livia Alexandra Dinu, Valentin Buiculescu, Angela Mihaela Baracu
Summary: This review provides an overview of the development and application of NO2 gas surface acoustic wave (SAW) sensors, focusing on different sensor configurations, fabrication technology, sensitive layer nanomaterials, and gas detection test methods. The synthesis methods of nanomaterials, their functionalization techniques, and the mechanism of interaction between NO2 molecules and the sensing nanomaterials are discussed.
Review
Materials Science, Multidisciplinary
Yinping Tao, Musu Ren, Han Zhang, Ton Peijs
Summary: Noise pollution has a significant impact on human health, leading to issues like hearing loss and stress. Research on developing efficient and cost-effective sound absorbing materials for vehicles, buildings, and large spaces is crucial, focusing on engineering materials solutions and tailored micro and nanostructures.Various materials and design strategies are reviewed, with a discussion on the synergistic effects of combining different constituents at different length scales for desired acoustic properties.
APPLIED MATERIALS TODAY
(2021)
Review
Chemistry, Multidisciplinary
Guanqi Tang, Feng Yan
Summary: Perovskite solar cells (PSCs) are considered a promising new generation photovoltaic technology for their high power conversion efficiency, easy fabrication, and low cost. Flexible perovskite solar cells (FPSCs) are seen as the primary commercialization option for PSCs, as they can be prepared by roll-to-roll printing process and are suitable for mass production. They can meet the demands of the emerging market for flexible electronics and have achieved efficiencies over 21%.
Article
Chemistry, Multidisciplinary
Yuanlu Tsai, Zhiteng Li, Shaojie Hu
Summary: This article reviews the current developments in atomic layer technology for spintronics, including atomic layer deposition (ALD) and atomic layer etching (ALE). The importance of these techniques in device fabrication is discussed, along with their applications in various materials. The article also compares the critical factors of ALD and ALE and explores the future prospects and challenges of atomic layer technology in spintronics.
Review
Immunology
Sha Li, Hangeri Liang, Shui-Hao Zhao, Xiao-Yan Yang, Zhong Guo
Summary: This review provides an overview of the advancements made in the development of protein-based pneumococcal vaccines. The key protein vaccine candidates and their vaccination results in animal studies are discussed, as well as the challenges and future directions in protein-based pneumococcal vaccine.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Chemistry, Physical
Juhyung Park, Jihun Kang, Sourav Chaule, Ji-Hyun Jang
Summary: Extensive research has been conducted on photoelectrochemical water splitting as a promising solution to meet the increasing demand for cleaner and renewable energy in a sustainable manner. This review article primarily focuses on strategies aimed at improving the water oxidation performance through heteroatom doping.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Physical
Ramanujam Lenin, Pattayil Alias Joy, Chandan Bera
Summary: Thermal properties of nanofluids, including dispersion, stability, and heat transfer, are heavily influenced by the interfacial layer, specifically its thickness and thermal conductivity. However, the challenges in determining these factors have limited research progress in the field of nanofluids. This review aims to provide insights on optimizing nanofluid thermal properties for commercial applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Biotechnology & Applied Microbiology
Kaimin Wu, Xuliang He, Jinglei Wang, Ting Pan, Ran He, Feizhi Kong, Zhenmin Cao, Feiye Ju, Zhao Huang, Libo Nie
Summary: Microfluidic chip technology is a technology platform that integrates basic operation units such as processing, separation, reaction, and detection into a microchannel chip to achieve low consumption, fast and efficient sample analysis. It has the characteristics of small sample and reagent volume, fast analysis, low cost, automation, portability, high throughput, and good compatibility with other techniques. The future development of microfluidic chips lies in point-of-care testing and high throughput equipment, but there are still challenges in the design and integration of microfluidic chips, as well as the analysis of actual samples.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Review
Energy & Fuels
Lu Zhang, Zhigang Yao, Hanyu Wang, Jian Zhang, Xiaoling Ma, Fujun Zhang
Summary: Polymer solar cells (APSCs) composed of polymeric donors and acceptors have shown great potential for wearable and flexible stretchable devices due to their mechanical flexibility and good film formation property. The recent progress in efficient APSCs is mainly attributed to the development of functional layer materials and device engineering evolution. This review outlines the key materials and techniques that enable high-performance APSCs, and discusses the challenges and future outlooks in this field.
Article
Acoustics
Vladimir E. Ostashev, D. Keith Wilson, Michael B. Muhlestein
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2020)
Article
Acoustics
D. Keith Wilson, Vladimir E. Ostashev, Chris L. Pettit
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2020)
Article
Acoustics
D. Keith Wilson
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2020)
Article
Acoustics
Matthew J. Kamrath, Vladimir E. Ostashev, D. Keith Wilson, Michael J. White, Carl R. Hart, Anthony Finn
Summary: This article experimentally investigated the amplitude and phase fluctuations of acoustic signals propagating along vertical and slanted paths, finding that the theory correctly predicted amplitude variances but overpredicted phase variances. Ground blocking of large eddies likely explains the discrepancy.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Acoustics
Carl R. Hart, D. Keith Wilson, Chris L. Pettit, Edward T. Nykaza
Summary: In this study, surrogate data was generated using the Crank-Nicholson parabolic equation and sampled by the Latin hypercube technique. Three machine-learning algorithms were applied to compare the predictions with experimental observations, showing better agreement when using surrogate data from a single realization of turbulence.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Acoustics
D. Keith Wilson, Matthew J. Kamrath, Caitlin E. Haedrich, Daniel J. Breton, Carl R. Hart
Summary: Statistical distributions of urban noise levels are influenced by various complex phenomena, with different distributions exhibiting skewness based on factors like fading and source variations. Analysis of sound-level data from 37 locations in the North End of Boston suggests that the exponentially modified Gaussian distribution provides the best fit to the data.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Acoustics
D. Keith Wilson, Michael J. Shaw, Vladimir E. Ostashev, Michael B. Muhlestein, Ross E. Alter, Michelle E. Swearingen, Sarah L. McComas
Summary: This study numerically simulated the impacts of characteristic weather events and seasonal patterns on infrasound propagation in the Arctic region, highlighting the different effects of various phenomena on the propagation and emphasizing the importance of horizontal variations in atmospheric profiles.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Acoustics
Vladimir E. Ostashev, Matthew J. Kamrath, D. Keith Wilson, Michael J. White, Carl R. Hart, Anthony Finn
Summary: This article investigates the coherence of acoustic signals in atmospheric turbulence and provides mathematical formulations for describing such coherence. Experimental data show that the theoretical models can predict the coherence characteristics of acoustic signals under different turbulent conditions with reasonable accuracy.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Physics, Multidisciplinary
Vladimir E. Ostashev, Elena Shabalina, D. Keith Wilson, Matthew J. Kamrath
Summary: This article investigates the phase variance of sound waves in statistically inhomogeneous turbulence and highlights the discrepancies between the results obtained using the Markov approximation and experimental data.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Acoustics
D. Keith Wilson, Chris L. Pettit, Vladimir E. Ostashev, Matthew J. Kamrath
Summary: The probability distributions of acoustic signals propagating through the near-ground atmosphere were simulated using the parabolic equation method. The results show that while a two-parameter gamma distribution fits well in the absence of uncertainties, a three-parameter distribution is needed to account for parametric uncertainties.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Acoustics
D. Keith Wilson, Vladimir E. Ostashev, Max E. Krackow
Summary: The basic Rice model is commonly used to describe complex signal statistics, but it is unsuitable for situations involving scattering by random inhomogeneities spanning a broad range of spatial scales. To address this, the model is extended to include a random modulation in the signal phase, which greatly improves agreement with simulated data for sound propagation in the near-ground atmosphere.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Correction
Acoustics
Vladimir E. Ostashev, Michael B. Muhlestein, D. Keith Wilson
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Acoustics
Vladimir E. E. Ostashev, D. Keith Wilson, Carl R. R. Hart
Summary: This article extends an isotropic turbulence model in the atmospheric boundary layer to account for ground blocking of buoyancy-produced velocity fluctuations. The extended, anisotropic turbulence model is used to predict the effect of velocity eddies on the statistical characteristics of sound signals. A closed-form expression for the variance of the phase fluctuations of a spherical sound wave for vertical and slanted propagation is derived using this model and geometrical acoustics. The phase variance is significantly affected by the buoyancy-produced velocity fluctuations with ground blocking, resulting in anisotropic behavior.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
D. Keith Wilson, Chris L. Pettit, Vladimir E. Ostashev, Kyle G. Dunn
ARTIFICIAL INTELLIGENCE AND MACHINE LEARNING FOR MULTI-DOMAIN OPERATIONS APPLICATIONS II
(2020)
Proceedings Paper
Computer Science, Artificial Intelligence
D. Keith Wilson, Daniel J. Breton, Chis L. Pettit, Vladimir E. Ostashev
ARTIFICIAL INTELLIGENCE AND MACHINE LEARNING FOR MULTI-DOMAIN OPERATIONS APPLICATIONS
(2019)
