Results 21 to 30 of about 3,408,611 (301)

Pumping-controlled multicolor modulation of upconversion emission for dual-mode dynamic anti-counterfeiting

open access: yesNanophotonics, 2020
Lanthanide up-conversion features stepwise multi-photon processes, where the difference in photon number that is required for specific up-conversion process usually leads to significant variance in pumping-related processes/properties.
Dai Xiaoru   +5 more
doaj   +1 more source

3D-Printed Dielectric Resonators for Quasi-TE112 Mode Singlets, Doublets and Dual-Mode Filters

open access: yesIEEE Access, 2022
This paper demonstrates the use of a ceramic stereolithography-based additive manufacturing process to fabricate higher-order mode dielectric resonators.
Luke Robins   +6 more
doaj   +1 more source

Design and Analysis of Trench-Assisted Low-Bending-Loss Large-Mode-Field-Area Multi-Core Fiber with an Air Hole

open access: yesPhotonics, 2021
In this paper, a trench-assisted low-bending-loss large-mode-field-area multi-core fiber with air hole is proposed, which can achieve dual-mode transmission.
Renjie Jia   +3 more
doaj   +1 more source

Lightweight Dual-Mode Soft Actuator Fabricated from Bellows and Foam Material

open access: yesActuators, 2022
Foam-based soft actuators are lightweight and highly compressible, which make them an attractive option for soft robotics. A negative pressure drive would complement the advantages of foam actuators and improve the durability of the soft robotic system ...
Zhiwei Jiao   +6 more
doaj   +1 more source

Sociodemographics and Psychosocial Experiences of Distance Learners in Nigeria: A Comparison of Single-mode and Dual-mode Universities

open access: yesJournal of Open, Flexible and Distance Learning, 2022
The study explored the psychosocial experience of distance learners at the National Open University of Nigeria (NOUN) and the Obafemi Awolowo University (OAU) in Ile-Ife. Psychosocial experience refers to the aggregate outcome of events and feelings that
Tajudeen Adebisi, Taiwo Olatunji
doaj  

A Dual Mode, Thin and Wideband MIMO Antenna System for Seamless Integration on UAV

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
Unmanned Aerial Vehicles (UAV’s), also known as autonomous drones, are being utilized for a variety of applications such as disaster management, search and rescue, surveillance, and remote monitoring.
Zubair Akhter   +2 more
doaj   +1 more source

Multiple Order Dual-Band Active Ring Filters with Composite Right/Left Handed Cells [PDF]

open access: yes, 2010
In this paper, a novel dual-band active filter topology is presented. The non-linear phase response of a composite right/left-handed cell is used to achieve the desired dual-band performance.
García Pérez, Oscar Alberto   +7 more
core   +1 more source

Dual-mode scramjet control using optical emission sensors

open access: yes, 2023
Closed-loop fueling control of a dual-mode scramjet was demonstrated using optical emission spectroscopy as the sole feedback to the controller. The optical emission from species of interest (OH*, CH*, C2*) was first characterized throughout the ...
Andrew Wanchek (17174365)   +4 more
core   +1 more source

A Compact Broadband Planar Inverted-F Antenna with Dual-Resonant Modes

open access: yesApplied Sciences, 2022
In this paper, a compact broadband planar inverted-F antenna (PIFA) with dual-resonant modes (TM1/2,2 and TM3/2,0) is proposed for 5G applications. By loading a pair of horizontal slots on the patch, the TM3/2,0 mode can be shifted downward and combined ...
Zhengya Qi   +3 more
doaj   +1 more source

Dual-Mode Flexible Sensor Based on PVDF/MXene Nanosheet/Reduced Graphene Oxide Composites for Electronic Skin

open access: yesNanomaterials, 2022
MXene materials have the metallic conductivity of transition metal carbides. Among them, Ti3C2TX with an accordion structure has great application prospects in the field of wearable devices.
Hu Liang   +4 more
doaj   +1 more source

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