Results 61 to 70 of about 103,059 (283)

Study on pulse shaping optimization of multiphase compensated pulsed alternator

Energy Reports, 2022
Compensated pulsed alternator (CPA) can exchange its kinetic energy into high current pulses. The pulse current waveform can be provided more flexibility by means of the trigger angle control of each phase from the multiphase CPA pulse driving system ...
Qi Li, Chengxu Sun, Youlong Wang, Ye Li
doaj   +1 more source

Joint Transmit and Receive Filter Optimization for Sub-Nyquist Delay-Doppler Estimation

, 2018
In this article, a framework is presented for the joint optimization of the analog transmit and receive filter with respect to a parameter estimation problem. At the receiver, conventional signal processing systems restrict the two-sided bandwidth of the
Lenz, Andreas, Stein, Manuel S., Swindlehurst, A. Lee   +2 more
core   +1 more source

Effect of Pulse Shaping on Subharmonic Aided Pressure Estimation In Vitro and In Vivo. [PDF]

, 2016
OBJECTIVES: Subharmonic imaging (SHI) is a technique that uses the nonlinear oscillations of microbubbles when exposed to ultrasound at high pressures transmitting at the fundamental frequency ie, f METHODS: Eight waveforms with different envelopes were ...
Dave, Jaydev K., Eisenbrey, John R., Forsberg, Flemming, Gupta, Ipshita, Hazard, Christopher, Li, Huiwen, Liu, Ji-Bin, Sridharan, Anush, Stanczak, Maria, Wallace, Kirk, Wang, Ping, Wang, Xinghua   +11 more
core   +2 more sources

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

Advanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon, Raúl López‐Martín, Verner Håkonsen, Nader Yaacoub, Francisco J. Terán, Alberto López Ortega, Jose A. De Toro, Gurvinder Singh   +7 more
wiley   +1 more source

OFDM Waveform Design for Joint Radar-communication Based on Data Distortion

Leida xuebao
Orthogonal Frequency Division Multiplexing (OFDM) waveform design is one of the key physical layer technologies for achieving joint radar-communication.
Yan LIU, Xianrong WAN, Jianxin YI
doaj   +1 more source

Wirelessly Powered Backscatter Communications: Waveform Design and SNR-Energy Tradeoff [PDF]

, 2017
This paper shows that wirelessly powered backscatter communications is subject to a fundamental tradeoff between the harvested energy at the tag and the reliability of the backscatter communication, measured in terms of SNR at the reader. Assuming the RF
Clerckx, Bruno, Huang, Kaibin, Zawawi, Zati Bayani   +2 more
core   +2 more sources

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Regularized Dual Averaging Image Reconstruction for Full-Wave Ultrasound Computed Tomography

, 2017
Ultrasound computed tomography (USCT) holds great promise for breast cancer screening. Waveform inversion-based image reconstruction methods account for higher order diffraction effects and can produce high-resolution USCT images, but are computationally
Anastasio, Mark A., Duric, Neb, Li, Cuiping, Matthews, Thomas P., Wang, Kun   +4 more
core   +1 more source

Integration of Low‐Voltage Nanoscale MoS2 Memristors on CMOS Microchips

Advanced Functional Materials, EarlyView.
This article presents the first monolithic integration of nanoscale MoS2‐based memristors into the back‐end‐of‐line of foundry‐fabricated CMOS microchips in a one‐transistor‐one‐resistor (1T1R) architecture. The MoS2‐based 1T1R cells exhibit forming‐free, nonvolatile resistive switching with ultra‐low operating voltages, low cycle‐to‐cycle variability ...
Jimin Lee, Sofía Cruces, Xiaohua Liu, Yang Chen, Vasilis A. Maroufidis, Janghyun Jo, Lukas Völkel, Dennis Braun, Michael Möller, Leon Brackmann, Holger Kalisch, Michael Heuken, Andrei Vescan, Rafal E. Dunin‐Borkowski, Joachim Mayer, Stefan Wiefels, Max C. Lemme   +16 more
wiley   +1 more source

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source