Results 61 to 70 of about 105,814 (313)

Coupled Optical Response of Armchair Graphene Nanoribbons and Single Wall Carbon Nanotube Hybrid Structures

Advanced Optical Materials, EarlyView.
A strong interaction between the five‐armchair graphene nanoribbons (GNRs) and the encapsulating single‐walled carbon nanotubes is identified. A reduction of the bandgap of the hybrid structure as well as additional proof for the single H‐terminations of the GNRs are confirmed through a combination of optical absorbance spectroscopy and density ...
Dido Denier van der Gon, Jorge Laranjeira, Valeria Milotti, Lukas W. Perner, Joselyn Benalcázar, Manuel Melle‐Franco, Thomas Pichler, Oliver H. Heckl, Paola Ayala   +8 more
wiley   +1 more source

Doppler sonar analysis of swallowing sounds in normal pediatric individuals Análise dos sons da deglutição pelo sonar Doppler em indivíduos normais na faixa etária pediátrica

Brazilian Journal of Otorhinolaryngology, 2009
Among the methods for assessing swallowing sounds - videofluoroscopy modified barium study, fiberoptic swallowing endoscopy, neck auscultation through a microphone, accelerometer and, more recently, the Doppler sonar - we have chosen the latter.
Cibele Fontoura Cagliari, Ari Leon Jurkiewicz, Rosane Sampaio Santos, Jair Mendes Marques   +3 more
doaj   +1 more source

The Doppler Effect

Ethnologia Europaea, 2005
At the last page of the first book Laura Ingalls Wilder wrote on her childhood Little house in the big woods she is lying in bed, while her father plays “Shall Auld Acquaintance be Forgot” on his violin. When the fiddle had stopped singing Laura called out softly, ‘What are days of auld lang syne, Pa?’‘They are the days of a long time ago, Laura’ Pa ...
openaire   +2 more sources

Optical Chaos Generation and Applications

Advanced Photonics Research, EarlyView.
This review comprehensively examines optical chaos generation via feedback, injection, and optoelectronic methods, emphasizing bandwidth enhancement and time‐delay suppression. Applications include chaos‐synchronized secure communication, physical random number generation, chaotic lidar for cm‐level detection, distributed fiber sensing, and terahertz ...
Wenhui Chen, Xiaoxin Mao, Junli Wang, Rong Zhang, Longsheng Wang, Zhiwei Jia, Pu Li, Anbang Wang, Yuncai Wang   +8 more
wiley   +1 more source

Measurement of nonlinear and Doppler distortion in Distributed Mode Loudspeakers [PDF]

International Journal of Electronics and Telecommunications
Distributed Mode Loudspeakers (DMLs), as other electroacoustic transducers with electrodynamic excitation, are susceptible to the occurrence of nonlinear distortion. The literature on nonlinear distortion in DMLs is scarce.
Karol Czesak, Piotr Kleczkowski
doaj   +1 more source

Integration of Soft‐Robotics and Deep Learning to Assess the Coordinated Biosonar Emission and Reception Dynamics in Hipposiderid Bats

Advanced Robotics Research, EarlyView.
Combining a biomimetic soft‐robot with deep‐learning data analytics sheds light on a unique peripheral dynamics seen in the biosonar system of bats: Bats modulate their ultrasonic biosonar signals upon emission as well as reception with variable, yet highly coordinated motion patterns of their noseleaves and pinnae.
Shuxin Zhang, Ruihao Wang, Xiaoyan Yin, Luhui Yang, Rolf Müller   +4 more
wiley   +1 more source

Lateral velocity measurement and error analysis

The Journal of Engineering, 2019
Most existing velocity measurement methods can only calculate the radial velocity by Doppler effect. Here, the authors study the method of measuring the lateral velocity.
Mengye Qiang, Yechao Bai, Xinggan Zhang
doaj   +1 more source

A Quadruped Piezoelectric Ultrasonic Actuating Robot with Foot‐Leg‐Trunk‐Integrated Structure

Advanced Robotics Research, EarlyView.
This study proposes a novel foot‐leg‐trunk‐integrated quadruped piezoelectric ultrasonic actuating robot with small size and lightweight. A hybrid vibration mode combining the first‐order out‐of‐plane bending vibration of the trunk and the first‐order horizontal bending vibration of driving legs is designed to generate elliptical trajectories at foot ...
Jie Deng, Yue Zhang, Xinchao Hao, Jing Li, Shijing Zhang, Yingxiang Liu   +5 more
wiley   +1 more source

Experimental measurements of radar signatures of large wind turbine

The Journal of Engineering, 2019
This study presents preliminary results on the signature of a large offshore wind turbine collected using an active S-band radar. The intensity fluctuations of this clutter signal in the range and Doppler domain are characterised, looking at their ...
Francesco Fioranelli, Jarez Patel, Colin Horne, Riccardo Palamà, Hugh Griffiths, Laith Danoon, Anthony Brown   +6 more
doaj   +1 more source

Anisotropic Surface Microrollers for Endovascular Navigation: A Computational Analysis with a Case Study in Hepatic Perfusion

Advanced Theory and Simulations, EarlyView.
Computational fluid dynamics analyses assess the upstream locomotion performance of anisotropic microrollers with varying height‐to‐width ratios. Observing their successful upstream locomotion in veins, their performance in hepatic circulation is investigated for treating primary liver cancer.
Burak Arslan, Ugur Bozuyuk, Kıvanç Görgülü, Erdost Yildiz, Hakancan Ozturk, Lucia Liotta, Volker Heinemann, Hana Algül, Metin Sitti   +8 more
wiley   +1 more source