Results 11 to 20 of about 5,931,270 (391)

Practical quantum imaging with undetectedphotons [PDF]

open access: yesOptics Continuum, 2023
Infrared (IR) imaging is invaluable across many scientific disciplines, from material analysis to diagnostic medicine. However, applications are often limited by detector cost, resolution and sensitivity, noise caused by the thermal IR background, and ...
E. Pearce   +13 more
semanticscholar   +1 more source

Energy Beamforming for RF Wireless Power Transfer With Dynamic Metasurface Antennas [PDF]

open access: yesIEEE Wireless Communications Letters, 2023
Radio frequency (RF) wireless power transfer (WPT) is a promising technology for charging the Internet of Things. Practical RF-WPT systems usually require energy beamforming (EB), which can compensate for the severe propagation loss by directing beams ...
Amirhossein Azarbahram   +21 more
semanticscholar   +1 more source

Biomimicry in nanotechnology: a comprehensive review [PDF]

open access: yesNanoscale Advances, 2022
Biomimicry has been utilized in many branches of science and engineering to develop devices for enhanced and better performance. The application of nanotechnology has made life easier in modern times. It has offered a way to manipulate matter and systems
Mehedi Hasan Himel   +13 more
semanticscholar   +1 more source

The Sample of Red Supergiants in 12 Low-mass Galaxies of the Local Group [PDF]

open access: yesAstrophysical Journal, 2021
This work establishes the most complete sample of red supergiants (RSGs) in 12 low-mass galaxies (WLM, IC 10, NGC 147, NGC 185, IC 1613, Leo A, Sextans B, Sextans A, NGC 6822, Pegasus Dwarf, SMC, and LMC) of the Local Group, which forms a
Yi Ren   +12 more
semanticscholar   +1 more source

Discovery of a glitch in the accretion-powered pulsar SXP 1062 [PDF]

open access: yes, 2017
We present timing analysis of the accretion powered pulsar SXP 1062, based on the observations of \textit{Swift}, \textit{XMM-Newton} and \textit{Chandra} satellites covering a time span of about 2 years.
M. Serim   +7 more
semanticscholar   +1 more source

Power and linewidth of propagating and localized modes in nanocontact spin-torque oscillators [PDF]

open access: yes, 2012
The integrated power and linewidth of a propagating and a self-localized spin-wave mode excited by spin-polarized current in an obliquely magnetized magnetic nanocontact are studied experimentally ...
S. Bonetti   +25 more
semanticscholar   +1 more source

Interdisciplinary Project-Based Learning: Experiences and Reflections From Teaching Electronic Engineering in China

open access: yesIEEE Transactions on Education, 2023
Continuous developments in the electronics industry have led to constantly changing career roles and graduate skills requirements. Students in the University of Electronic Science and Technology of China (UESTC) have complained that numerous courses in ...
Hua Fan   +6 more
semanticscholar   +1 more source

30 GHz flux density measurements of the Caltech-Jodrell flat-spectrum sources with OCRA-p [PDF]

open access: yes, 2007
To measure the 30-GHz flux densities of the 293 sources in the Caltech-Jodrell Bank flat-spectrum (CJF) sample. The measurements are part of an ongoing programme to measure the spectral energy distributions of flat spectrum radio sources and to correlate
S. R. Lowe   +9 more
semanticscholar   +1 more source

Timing studies on RXTE observations of SAX J2103.5+4545 [PDF]

open access: yes, 2006
SAX J2103.5+4545 has been continuously monitored for ∼900 d by the Rossi X-ray Timing Explorer (RXTE) since its outburst in 2002 July. Using these observations and previous archival RXTE observations of SAX J2103.5+4545, we refined the binary orbital ...
A. Baykal   +15 more
semanticscholar   +1 more source

Evidence of a change in the long-term spin-down rate of the X-ray pulsar 4U 1907+09 [PDF]

open access: yes, 2005
We analysed RXTE archival observations of 4U 1907 +09 between 1996 February 17 and 2002 March 6. The pulse timing analysis showed that the source stayed at almost constant period around 1998 August and then started to spin-down at a rate of (-1.887 ∓ 0 ...
A. Baykal   +11 more
semanticscholar   +1 more source

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