Results 141 to 150 of about 70,205 (364)
Physical Review Letters, 2017 We present a method allowing for the imposition of two independent and arbitrary phase profiles on any pair of orthogonal states of polarization-linear, circular, or elliptical-relying only on simple, linearly birefringent wave plate elements arranged ...
J. P. Balthasar Mueller +4 more
semanticscholar +1 more source
Reconfigurable Manipulation of Sound with a Multimaterial 3D Printed Origami Metasurface
Advanced Materials Technologies, EarlyView.This paper demonstrates a programmable origami‐inspired metasurface, using multimaterial three‐dimensional printing technology to achieve reconfigurable sound manipulation. The unique bistable design enables rapid switching between configurations, allowing for precise control of acoustic reflections with minimal mechanical input. The results showcase a
Dinh Hai Le +5 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
Diffractive Interface Theory: Nonlocal polarizability approach to the optics of metasurfaces [PDF]
arXiv, 2014 We present a formalism for understanding the elecromagnetism of metasurfaces, optically thin composite films with engineered diffraction. The technique, diffractive interface theory (DIT), takes explicit advantage of the small optical thickness of a metasurface, eliminating the need for solving for light propagation inside the film and providing a ...
arxiv
Reprogrammable Phononic Metasurfaces
Advanced Materials, 2017 AbstractPhononic metamaterials rely on the presence of resonances in a structured medium to control the propagation of elastic waves. Their response depends on the geometry of their fundamental building blocks. A major challenge in metamaterials design is the realization of basic building blocks that can be tuned dynamically. Here, a metamaterial plate
André Foehr +4 more
openaire +5 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
Metasurfaces for perfect and full control of refraction and reflection [PDF]
arXiv, 2016 In this talk we present and discuss a new general approach to the synthesis of metasurfaces for full control of transmitted and reflected fields. The method is based on the use of an equivalent impedance matrix which connects the tangential field components at the two sides on the metasurface.
arxiv
Smart metasurface with self-adaptively reprogrammable functions
Light: Science & Applications, 2019 Intelligence at either the material or metamaterial level is a goal that researchers have been pursuing. From passive to active, metasurfaces have been developed to be programmable to dynamically and arbitrarily manipulate electromagnetic (EM) wavefields.
Qian Ma +5 more
semanticscholar +1 more source
Progress in Surface Plasmon and Other Resonance Biosensors for Biomedical Applications
Advanced Materials Technologies, EarlyView.This is the shortened version: Recent advancements in surface plasmon resonance and other optical resonance biosensors for biomedical applications are presented. Advanced sensing strategies are examined for the detection of diverse analytes, integration of nanomaterials and machine learning, and emerging nonplasmonic modes like guided mode resonance ...
Faten Bashar Kamal Eddin +8 more
wiley +1 more source
Analog computing using reflective plasmonic metasurfaces [PDF]
arXiv, 2016 Motivated by the recent renewed interest in compact analog computing using light and metasurfaces (Silva, A. et al., Science 2014, 343, 160-163), we suggest a practical approach to its realization that involves reflective metasurfaces consisting of arrayed gold nanobricks atop a subwavelength-thin dielectric spacer and optically-thick gold film, a ...
arxiv