Results 61 to 70 of about 217,913 (292)

Colloidal Plasmonic Nanoparticles for Ultrafast Optical Switching and Laser Pulse Generation

open access: yesFrontiers in Materials, 2018
Light-matter interactions are greatly enhanced and spatially well-confined in plasmonic nanostructures in the spectral resonance range. In colloidal plasmonic nanoparticle (NP), this effect is manifested by the strong absorption caused by the collective ...
Xiaofeng Liu
doaj   +1 more source

The Class-E/F Family of ZVS Switching Amplifiers [PDF]

open access: yes, 2003
A new family of switching amplifiers, each member having some of the features of both class E and inverse F, is introduced. These class-E/F amplifiers have class-E features such as incorporation of the transistor parasitic capacitance into the circuit ...
Aoki, Ichiro   +3 more
core   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg   +5 more
wiley   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann   +3 more
wiley   +1 more source

A new transformerless buck‐boost converter with improved voltage gain and continuous input current

open access: yesIET Power Electronics
This paper proposes a new transformerless buck‐boost converter with an extended voltage conversion ratio. This converter has semi‐quadratic voltage gain, which provides more gain with lower duty cycles.
Majid Hosseinpour   +3 more
doaj   +1 more source

A Reconfigurable Dual Band-Notched Ultra-Wideband Flexible Antenna Based on a Silicon Switch

open access: yesIEEE Access
This article presents a reconfigurable dual-notch ultra-wideband (UWB) antenna designed to analyze the performance of silicon-based switches on a flexible substrate. The primary aim is to evaluate the performance of silicon-based switches integrated onto
Hilal Koc Polat
doaj   +1 more source

A Reconfigurable Triple-Notch-Band Antenna Integrated with Defected Microstrip Structure Band-Stop Filter for Ultra-Wideband Cognitive Radio Applications

open access: yesInternational Journal of Antennas and Propagation, 2013
A printed reconfigurable ultra-wideband (UWB) monopole antenna with triple narrow band-notched characteristics is proposed for cognitive radio applications in this paper. The triple narrow band-notched frequencies are obtained using a defected microstrip
Yingsong Li, Wenxing Li, Qiubo Ye
doaj   +1 more source

Switched Capacitor Voltage Converter [PDF]

open access: yes, 2019
This project supports IoT development by reducing the power con- sumption and physical footprint of voltage converters. Our switched- capacitor IC design steps down an input of 1:0 - 1:4 V to 0:6 V for a decade of load current from 5 ...
Hsia, Anne, Kidd, Bradford
core   +1 more source

Effect of Loss on Multiplexed Single-Photon Sources

open access: yes, 2015
An on-demand single-photon source is a key requirement for scaling many optical quantum technologies. A promising approach to realize an on-demand single-photon source is to multiplex an array of heralded single-photon sources using an active optical ...
Bonneau, Damien   +3 more
core   +1 more source

Ideal optical switching by nonlinear multiple (parasitic) core couplers

open access: yesElectronics Letters, 1990
Ideal nonlinear optical switching can be approached by placing a number of ‘parasitic’ cores in parallel with the original twin-core coupler. Significant improvement occurs with the addition of only one ‘parasitic’ core, requiring an increase in length of 40% that of the twin-core coupler.
Y. Chen, A.W. Snyder, D.J. Mitchell
openaire   +1 more source

Home - About - Disclaimer - Privacy