Results 51 to 60 of about 4,092,880 (299)

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

open access: yesAdvanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh   +4 more
wiley   +1 more source

Simple and Easily Connectable Transition from Empty Substrate-Integrated Waveguide to a 3D Printed Rectangular Waveguide

open access: yesApplied Sciences, 2023
3D printing is one of the most promising manufacturing methods in the most developed technological fields, including microwave hardware fabrication. On the other hand, the well-known manufacturing methods of planar substrate integrated circuits allow ...
Darío Herraiz   +5 more
doaj   +1 more source

Exceptional Electro‐Optic Coefficient Unlocked via Polarization Swaying in KNbO3 Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
We present the largest reported electro‐optic response in any material to date, guided by a new design principle that exploits ultralow coercive field polarization swaying enabled by low‐symmetry ferroelectric phases in monoclinic KNbO3 thin films for energy‐efficient classical and quantum photonic integrated circuits. ABSTRACT The electro‐optic effect
Sankalpa Hazra   +11 more
wiley   +1 more source

Biodegradable Conductors for Implantable and Wearable Transient Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Biodegradable conductors are essential building blocks for transient bioelectronics, enabling temporary sensing, stimulation, and energy transfer while eliminating the need for device retrieval. This review summarizes biodegradable metals, conducting polymers, ionic conductors, and conductive composites, highlighting degradation mechanisms, material ...
Yicheng Zhu, Yijun Liu, Naoji Matsuhisa
wiley   +1 more source

A Substrate Integrated Gap Waveguide Based Wideband 3-dB Coupler for 5G Applications

open access: yesIEEE Access, 2018
A wideband 3-dB coupler using substrate integrated gap waveguide (SIGW) is proposed based on the principle of the branch-line coupler structure. The SIGW coupler design is comprehensively studied.
Dongya Shen, Ke Wang, Xiupu Zhang
doaj   +1 more source

A review on future planar transmission line

open access: yesCogent Engineering, 2016
Substrate Integrated Waveguide (SIW) is an emerging trend in planar technology. The SIW structure consists of two rows of conducting cylinders in a dielectric substrate.
Ashok Kumar   +2 more
doaj   +1 more source

Practical Design and Implementation Method for Asymmetric-Response Post-Loaded Substrate-Integrated Waveguide Filters

open access: yesIEEE Access, 2020
This paper presents a practical method for implementing a post-loaded substrate-integrated waveguide (SIW) filter producing an asymmetric response with a pair of near-band transmission zeros.
Sanggu Lee, Seunggoo Nam, Juseop Lee
doaj   +1 more source

Substrate Integrated Waveguide Switched Beam Antenna

open access: yes, 2015
This communication presents a substrate integrated waveguide (SIW) switched beam antenna operating at 2.45 GHz. The design allows the beam to be switched between six discrete directions giving 360° coverage. The switch beam control is achieved using only
Wu, Liang   +2 more
core   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

open access: yesAdvanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Peningkatan Persentase Lebar Pita Antena 5G Substrate Integrated Waveguide dengan Slot Dumbbell

open access: yesJurnal Elkomika
ABSTRAK Antena Substrate Integrated Waveguide (SIW) konvensional memiliki lebar pita impedansi yang sempit. Penelitian ini mengusulkan perbaikan lebar pita impedansi antena SIW dengan mempergunakan slot dumbbell elips.
DIAN WIDI ASTUTI   +3 more
doaj   +1 more source

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