Results 11 to 20 of about 786,843 (253)

Broadband Bidirectional and Multi-Channel Unidirectional Acoustic Insulation by Mode-Conversion Phased Units

open access: yesFrontiers in Materials, 2021
The technique of sound insulation has a wide range of potential applications in environment noise control and architectural acoustics. The rapid development of acoustic artificial materials has provided alternative solutions to design sound insulation ...
Jia-he Chen   +10 more
doaj   +1 more source

Continuous Phase-Modulated Halftones [PDF]

open access: yesIEEE Transactions on Image Processing, 2009
A generalization of periodic clustered-dot halftones is proposed, wherein the phase of the halftone spots is modulated using a secondary signal. The process is accomplished by using an analytic halftone threshold function that allows halftones to be generated with controlled phase variation in different regions of the printed page.
Basak, Oztan, Gaurav, Sharma
openaire   +2 more sources

Interfaces of Modulated Phases [PDF]

open access: yesPhysical Review Letters, 1997
Numerically minimizing a continuous free-energy functional which yields several modulated phases, we obtain the order-parameter profiles and interfacial free energies of symmetric and non-symmetric tilt boundaries within the lamellar phase, and of interfaces between coexisting lamellar, hexagonal, and disordered phases.
Netz, R., Andelman, D., Schick, M.
openaire   +3 more sources

Tunable Multiple Surface Plasmonic Bending Beams into Single One by Changing Incident Light Wavelength

open access: yesPhotonics, 2023
Controllable surface plasmonic bending beams (SPBs) with propagating along bending curves have a wide range of applications in the fields of fiber sensors, optical trapping, and micro-nano manipulations.
Hang Zhang   +4 more
doaj   +1 more source

Superconducting acousto-optic phase modulator

open access: yesOptics Express, 2021
We report the development of a superconducting acousto-optic phase modulator fabricated on a lithium niobate substrate. A titanium-diffused optical waveguide is placed in a surface acoustic wave resonator, where the electrodes for mirrors and an interdigitated transducer are made of a superconducting niobium titanium nitride thin film.
Okada, Ayato   +11 more
openaire   +3 more sources

Programmable Manipulations of Terahertz Beams by Graphene-Based Metasurface With Both Amplitude and Phase Modulations

open access: yesFrontiers in Materials, 2022
Terahertz metasurface with digital, programmable control recently gained considerable attention for its potential applications in high-speed imaging, nondestructive sensing, and wireless communication.
Chenxi Liu   +4 more
doaj   +1 more source

High‐Efficiency Phase and Polarization Modulation Metasurfaces

open access: yesAdvanced Photonics Research, 2022
Use of metasurfaces to control the characteristics of electromagnetic waves is an emerging trend at present. Multifunctional metasurfaces, which can modulate multiple wave parameters, greatly reduce the complexity and enrich the functionality of optical ...
Huan Zhao   +4 more
doaj   +1 more source

Multiple range imaging camera operation with minimal performance impact [PDF]

open access: yes, 2010
Time-of-flight range imaging cameras operate by illuminating a scene with amplitude modulated light and measuring the phase shift of the modulation envelope between the emitted and reflected light.
Cree, Michael J.   +3 more
core   +2 more sources

Dynamic Reflection Phase Modulation in Terahertz Metamaterial

open access: yesIEEE Photonics Journal, 2019
In order to provide the terahertz metamaterial with dynamic phase modulation capability, a new strategy is proposed. It consists of two different unit cells involving particularly designed metallic concentric circular split ring resonators, both of which
Zeng Yangjian   +4 more
doaj   +1 more source

Engineering Aspheric Liquid Crystal Lenses by Using the Transmission Electrode Technique

open access: yesCrystals, 2020
The transmission electrode technique has been recently proposed as a versatile method to obtain various types of liquid-crystal (LC) lenses. In this work, an equivalent electric circuit and new analytical expressions based on this technique are developed.
José Francisco Algorri   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy