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Chrisoula Alexandraki, Michael Starakis, Panagiotis Zervas and Rolf Bader
Percussionists use a multitude of objects and materials, mounted on their instruments, to achieve a satisfying sound texture. This is a tedious process as there are no guidelines suggesting how to manipulate a percussion instrument to adjust its perceptu...
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Miguel Ruiz Cabello, Antonio J. Martín Valverde, Borja Plaza, Malte Frövel, David Poyatos, Amelia R. Bretones, Alberto G. Bravo and Salvador G. García
Efficiently modeling thin features using the finite-difference time-domain (FDTD) method involves a considerable reduction in the spatial mesh size. However, in real-world scenarios, such reductions can lead to unaffordable memory and CPU requirements. I...
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Ziyou Zhou, Wenfeng Liu, Hailong Huang, Xiaolong Ding and Xintian Li
In this paper, the solar absorption level of PEDOT:PSS/Ge organic and inorganic hybrid solar cells (HSCs) with different parameters of cruciform microstructure (CM) is studied, using the finite-difference time domain (FDTD) method. The light absorption i...
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Yuhuan Qiu, Guohua Kang, Xunlong Cheng and Jiaqi Wu
To address the problem that the black coating for spacecraft optical stealth easily falls off, this study constructs a light-absorbing spacecraft surface based on a micro/nanostructure through imitating a natural light-trapping structure. In this paper, ...
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Francesco Martellotta, Stefania Liuzzi and Chiara Rubino
Rupestrian churches are spaces obtained from excavation of soft rocks that are frequently found in many Mediterranean countries. In the present paper the church dedicated to Saints Andrew and Procopius, located close to the city of Monopoli in Apulia (It...
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You-Jin Jeong, Suchit Kumar, Seon-Woo Park, Youngkyu Song, Jee-Hyun Cho, Chan Hong Moon and Chang-Hyun Oh
This study presents the feasibility of a dual-mode high-pass birdcage RF coil to acquire MR images at both 1H and 23Na frequencies at ultra-high-field MR scanner, 7 T. A dual-mode circuit (DMC) in the dual-mode birdcage (DMBC) RF coil operates at two fre...
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Hongyu Ren, Qianyi Shangguan, Zijun Song, Yong Zhao, Zao Yi, Guolu Ma, Jianguo Zhang, Hua Yang, Shifa Wang and Pinghui Wu
This paper presents a graphene metamaterial absorber based on impedance matching. A finite difference in time domain (FDTD) method is used to achieve a theoretically perfect absorption in the mid-infrared band. A basis is created for the multiband stable...
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Iro Malefaki and Kostas Belibassakis
Biomimetic flapping-foil thrusters can operate efficiently while offering desirable levels of thrust required for the propulsion of a small vessel or an Autonomous Underwater Vehicle (AUV). These systems have been studied both as main propulsion devices ...
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Lin Liu, Xiumei Zhang, Yunjia Ji and Xiuming Wang
A knowledge of wave propagation in boreholes with gas hydrate-bearing sediments, a typical three-phase porous medium, is of great significance for better applications of acoustic logging information on the exploitation of gas hydrate. To study the wave p...
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Yinping Li, Niannian Wang, Jianwei Lei, Fuming Wang and Ce Li
Ground Penetrating Radar (GPR) is a shallow geophysical method for detecting and locating subsurface targets. The GPR image echo characteristics of complex underground structures can be obtained by carrying out GPR forward modeling research. The traditio...
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