Results 51 to 60 of about 12,538 (215)

Functional Fibers in Soft Robotics: Advances in Material, Structural, and Systemic Tactics

Advanced Robotics Research, EarlyView.
Fiber‐form robotic systems offer a scalable pathway toward embodied intelligence in soft robotics. This review surveys functional fibers as material, structural, and systemic elements, highlighting advances in responsive materials, architectural programing, and fabrication strategies.
Joonhee Won, Jaehyun Jang, Hyeonseo Kim, Inyoung Choi, Steve Park, Seongjun Park   +5 more
wiley   +1 more source

Disturbances of surface wave field due to wave scattering at shallow cavities

Yantu gongcheng xuebao, 2018
In homogenous half spaces, the wave fields at shallow depth are dominated by Rayleigh waves activated by the surface sources. When the forward Rayleigh waves encounter a shallow cavity, the displacement shapes and the particle orbit are changed. Rayleigh
CHAI Hua-you 1, KE Wen-hui 2, 3, CHEN Elton J 4, HUANG Xiang-guo 2, LI Zhong-chao 2
doaj   +1 more source

Perspective: Hollow Core Optical Fibres for Ultraviolet and Visible Wavelengths

Advanced Science, EarlyView.
Hollow core optical fibres bypass material constraints that limit optical fibres at ultraviolet and visible wavelengths. However, their challenging fabrication has limited their development, and significant gains in performance remain possible. In this perspective we outline approaches to enable the next generation of fibres for shorter wavelengths ...
Robbie Mears, Kerrianne Harrington, Jonathan C. Knight, William J. Wadsworth, James M. Stone, Tim A. Birks   +5 more
wiley   +1 more source

Moonlit sky polarization patterns from Cerro Paranal

Astronomy & Astrophysics
We investigated the polarization patterns from the moonlit sky as observed from the European Southern Observatory at Cerro Paranal. The moonlit sky background can be significant in astronomical observations and thus be a source of contamination in ...
Pereira B., González-Gaitán S., Mourão A. M., Rino-Silvestre J., Paulino-Afonso A., Anderson J. P., Cikota A., Morales-Garoffolo A.   +7 more
doaj   +1 more source

Spontaneous Rayleigh-Brillouin scattering spectral analysis based on the Wiener filter

AIP Advances, 2018
In this paper, a spontaneous Rayleigh-Brillouin scattering spectrometer is developed to measure the gaseous spontaneous Rayleigh-Brillouin scattering profiles over the pressure range from 1 to 5 atm for a wavelength of 532nm at a constant room ...
Tao Wu, Jingcheng Shang, Chuanyin Yang, Xinyi Zhang, Huan Yu, Qibo Mao, Xingdao He, Zhongping Chen   +7 more
doaj   +1 more source

Tissue Optics and Photonics: Biological Tissue Structures

Journal of Biomedical Photonics & Engineering, 2015
This is the first section of the review-tutorial paper describing fundamentals of tissue optics and photonics mostly devoted to biological tissue structures and their specificity related to light interactions at its propagation in tissues.
Valery V. Tuchin
doaj   +1 more source

On Determination Method for Resolution of Secondary Electron Images in Scanning Electron Microscopy

Advanced Science, EarlyView.
An idealized SEM, termed Rayleigh's microscope, is constructed by Monte Carlo simulation to represent imaging conditions that just satisfy the Rayleigh criterion. Based on this physically defined model, sharpness–resolution conversion curves are established and combined with the Rose criterion, enabling automated resolution evaluation from practical ...
Tongfang Yang, Yanbo Zou, Zejun Ding
wiley   +1 more source

3D Large‐Scale Subwavelength‐Resolution Sound Sheet Tomography Based on an Active and Programmable Circular Meta‐Array

Advanced Science, EarlyView.
A programmable 2048‐element circular ultrasound array combined with a compact acoustic lens produces a thin “sound sheet” over a large field of view, and records echoes with wide angular diversity across the ring aperture. Coherence‐enhanced beamforming converts full‐matrix data into high‐contrast tomographic slices, delivering near‐diffraction‐limited
Qiu‐De Zhang, Zi‐Bin Lin, Zhuo Chen, Zhao‐Hui Liu, Jin‐Lian He, Jun‐Jie Song, Long‐Sheng Zeng, Liang Zhou, Ming‐Yue Ding, Yu‐Gui Peng, Ming Yuchi, Xue‐Feng Zhu   +11 more
wiley   +1 more source

Probing methane in Uranus’ upper stratosphere using HST observations of the 1280 Å Raman feature

Astronomy & Astrophysics
We analysed far-ultraviolet (FUV) spectra of Uranus obtained by the HST STIS and COS instruments in 2012 and 2014, respectively, to determine the brightness of Raman-scattered Lyman-alpha (Lyα) emissions centred at 1280 Å (hereafter, the Raman feature ...
Joshi Sushen, Roth Lorenz, Chaufray Jean-Yves, Gladstone Randy, Ivchenko Nickolay, Strobel Darrell, Lamy Laurent   +6 more
doaj   +1 more source

Study on the Scattering Effect of Terahertz Waves in Near-Surface Atmosphere

IEEE Access, 2018
Terahertz waves suffer from scattering attenuation of various types of particles due to the complex environment in the near-surface atmosphere. This paper focused on the scattering attenuation of terahertz waves due to different kinds of particles ...
Qingfeng Jing, Danmei Liu, Jincheng Tong
doaj   +1 more source