Results 31 to 40 of about 409,007 (252)

Broadband THz Absorber for Large Inclination Angle TE and TM Waves

open access: yesIEEE Photonics Journal, 2021
Terahertz (THz) electromagnetic wave absorbers are finding new applications both in military and civilian sectors. This is the reason why constant efforts have been made worldwide to enhance the working performance of these absorbers. One downside of the
Vinit Singh Yadav   +2 more
doaj   +1 more source

Switchable and Tunable Terahertz Metamaterial Based on Vanadium Dioxide and Photosensitive Silicon

open access: yesNanomaterials, 2023
A switchable and tunable terahertz (THz) metamaterial based on photosensitive silicon and Vanadium dioxide (VO2) was proposed. By using a finite-difference time-domain (FDTD) method, the transmission and reflective properties of the metamaterial were ...
Xin Zhang   +7 more
doaj   +1 more source

Semiconductor saturable absorbers for ultrafast THz signals [PDF]

open access: yes, 2010
We demonstrate saturable absorber behavior of n-type semiconductors GaAs, GaP and Ge in THz frequency range at room temperature using nonlinear THz spectroscopy.
Conwell E. M.   +2 more
core   +4 more sources

A Novel Approach for Optimization of Vehicle Noise Insulators [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2020
Development of effective sound insulators for interior noise reduction of vehicle cabin is an essential phase of the process of vehicle manufacturing. One of the main issues in this process is the space limitations for packaging the firewall insulators ...
S.Hamed Tabatabaei   +3 more
doaj   +1 more source

Stereo Perfect Metamaterial Absorber Based on Standing Gear-Shaped Resonant Structure With Wide-Incident-Angle Stability

open access: yesFrontiers in Physics, 2020
In this work, a single-band metamaterial absorber (MA) based on a three dimensional (3D) resonant structure is presented. The unit cell is composed of a standing gear-shaped resonator, which is embedded in the dielectric substrate.
Guangsheng Deng   +4 more
doaj   +1 more source

A Solid State Plasma Multifunctional Metamaterial and Its Application for Energy Absorbing and Cross Polarization Conversion

open access: yesIEEE Access, 2020
With the increasing expectations of electromagnetic devices, the defects of monofunctional devices that are susceptibly limited by external constraints are becoming more and more obvious and the integration of multiple functions has gradually become the ...
Li Zeng   +4 more
doaj   +1 more source

Transformation of subradiant state to superradiant state in a thick resonant medium

open access: yes, 2013
The propagation of a step pulse through a thick resonant absorber with homogeneously broadened absorption line is considered. It is shown that a specific subradiant state is naturally developed in the absorber due to the formation of the spatial domains ...
Shakhmuratov, R. N.
core   +1 more source

Drill-String Vibration Suppression Using Hybrid Magnetorheological Elastomer-Fluid Absorbers

open access: yesActuators
Rotary drilling systems with PDC bits, commonly used for drilling deep wells in the production and exploration of oil and natural gas, frequently encounter severe vibrations.
Jasem M. Kamel   +2 more
doaj   +1 more source

Testing and Analysis of MOSFET-Based Absorber Integrated Antenna for 5G/WiMAX/WLAN Applications

open access: yesNanomaterials, 2022
A 3D electromagnetic circuit design and analysis of a MOSFET-based absorber active integrated antenna has been performed. It integrates a transmitting dual-band double material substrate (DMS) cylindrical surrounding patch antenna (CSPA) with a MOSFET ...
Elliot O. Omoru, Viranjay M. Srivastava
doaj   +1 more source

The effects of absorber attachment location on vibration response of simply supported plate [PDF]

open access: yes, 2016
Vibration analysis of thin walled structure has been an active research in engineering fields. This paper proposed to investigate the application of vibration absorber (VA) attached to the simply supported plate (SSP) in order to suppress the structural ...
Mohamed Salleh, Muhammad   +1 more
core  

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