Results 81 to 90 of about 556,769 (269)
In situ chamber for studying battery failure using high‐speed synchrotron radiography
Journal of Synchrotron Radiation, Volume 30, Issue 1, Page 192-199, January 2023., 2023 The developed test chamber, capable of high‐speed X‐ray imaging, was designed to perform robust in situ abuse tests on batteries in various configurations while providing a complete overview of the failure event with additional complementary measurement methods.The investigation of lithium‐ion battery failures is a major challenge for personnel and ...
Jonas Pfaff +9 more
wiley +1 more source
Transforming Room Acoustics with Causality‐Driven Dual‐Function Passive Metamaterials
Advanced Materials Technologies, EarlyView.This work presents an dual acoustic metamaterial for rooms that achieves excellent broadband performance for both sound absorption and sound diffusion. This is done by using causality formulations linking the absorption of the passive system to its volume, yielding an optimal surface area ratio required for excellent sound absorption and while ...
Eric Ballestero +5 more
wiley +1 more source
Nanophotonics, 2023 The ultraviolet (UV) wavelength regime is attracting increasing attention because of its growing demand in semiconductor lithography, spectroscopy, and imaging applications owing to its high spatial resolution and high photon energy.
Won Seungjai +5 more
doaj +1 more source
Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection [PDF]
Scientific Reports, 2013 AbstractWe unveil the connection between the acoustic impedance along a flat surface and the reflected acoustic wavefront, in order to empower a wide wariety of novel applications in acoustic community. Our designed flat surface can generate double reflections: the ordinary reflection and the extraordinary one whose wavefront is manipulated by the ...
Zhi Ning Chen +4 more
openaire +3 more sources
Film‐Based Multi‐Photon Lithography for Efficient Printing of Electromagnetic Surface Structures
Advanced Materials Technologies, EarlyView.This work introduces film‐based multi‐photon lithography as an efficient method for fabricating electromagnetic surface structures with 2D and 2.5D geometries, particularly THz and mid‐IR metasurfaces. These structures can be fabricated on various substrates, such as glass or silicon‐on‐insulator, over areas ranging from mm2 to cm2, achieving feature ...
Gordon Zyla +6 more
wiley +1 more source
Unidirectional Focusing of Light Using Structured Diffractive Surfaces
Advanced Optical Materials, EarlyView.This study presents a reciprocal diffractive unidirectional focusing design based on linear and isotropic layers. A set of cascaded diffractive layers is designed using deep learning to achieve efficient forward light focusing while suppressing backward propagation across various illumination angles.
Yuhang Li +4 more
wiley +1 more source
Beam Shaping by a Magnetic Fluid Deformable Mirror With Curved Trajectory for Optical Tweezer System
IEEE Access, 2021 This article describes a novel optical tweezer system which utilizes a magnetic fluid deformable mirror (MFDM) with a wavefront sensor (WFS) and controller to produce a curved Bessel beam for manipulating an optically trapped microparticle.
Xiang Wei +6 more
doaj +1 more source
High-Fidelity and High-Speed Wavefront Shaping by Leveraging Complex Media [PDF]
arXiv, 2023 Achieving high-precision light manipulation is crucial for delivering information through complex media with high fidelity. However, existing spatial light modulation devices face a fundamental tradeoff between speed and accuracy. Digital micromirror devices (DMDs) have emerged as a promising candidate as accessible high-speed wavefront shaping devices
arxiv
Dispersionless Manipulation of Reflected Acoustic Wavefront by Subwavelength Corrugated Surface [PDF]
Scientific Reports, 2015 AbstractFree controls of optic/acoustic waves for bending, focusing or steering the energy of wavefronts are highly desirable in many practical scenarios. However, the dispersive nature of the existing metamaterials/metasurfaces for wavefront manipulation necessarily results in limited bandwidth. Here, we propose the concept of dispersionless wavefront
Xue-wen Jiang +6 more
openaire +2 more sources
Femtosecond Pulse Shaping with Semiconductor Huygens' Metasurfaces
Advanced Optical Materials, EarlyView.Spatially variant silicon Huygens' metasurfaces enable femtosecond pulse shaping by tailoring the spectral phase and amplitude of incident pulses. Two key functionalities are demonstrated: temporal stretching and pulse splitting of an input Gaussian pulse.
Katsuya Tanaka +10 more
wiley +1 more source