Results 81 to 90 of about 786,932 (316)

Cosmology with Gravitational Lensing [PDF]

open access: yes, 2011
Lectures given at Como Summer School 2007, now published (in 'Dark Matter and Dark Energy', 2011, ASSL 370, eds. Matarrese, Colpi, Gorini, Moschella)
openaire   +5 more sources

Targeted Local Delivery via Fiber‐Embedded Flexible Microchannels Integrated with Film‐Based Implantable Probes

open access: yesAdvanced Materials Technologies, EarlyView.
In this study, a fiber‐embedded drug delivery channel for implantable microprobes, demonstrating the first functional drug delivery system using flexible LCP‐based probes, is developed. The design incorporates fibers for site‐selective drug delivery and electrical functions. The utilization of monolithic thermal bonding simplifies fabrication.
Jaehwan Byun   +6 more
wiley   +1 more source

Time delay of light in the gravitational lensing of supermassive black holes in dark matter halos

open access: yesEuropean Physical Journal C: Particles and Fields
The dark matter halo has non-negligible effects on the gravitational lensing of supermassive black hole in the galaxy center. Our work presents a study on the time-delay of light in gravitational lensing of black holes enclosed by dark matter halos.
Chen-Kai Qiao, Ping Su
doaj   +1 more source

Weak gravitational lensing by stringy black holes [PDF]

open access: yesThe European Physical Journal Plus, 2019
In this paper, we discuss the weak gravitational lensing in the context of stringy black holes. Initially, we examine the deflection angle of photon by charged stringy black hole.
W. Javed   +3 more
semanticscholar   +1 more source

Efficient and Realistic Brain Simulation: A Review and Design Guide for Memristor‐Based Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
Memristor‐based emulation of Hodgkin‐Huxley neuron models is investigated, by defining the ideal device characteristics needed for accurate ion‐channel representation and reviewing existing works targeting memristive replication of biological realistic neural behavior.
Lennart Paul Liong Landsmeer   +5 more
wiley   +1 more source

Gravitational lensing of gravitational waves: wave nature and prospects for detection [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
We discuss the gravitational lensing of gravitational wave (GW) signals from coalescing binaries. We delineate the regime where wave effects are significant from the regime where geometric limit can be used.
A. Meena, J. Bagla
semanticscholar   +1 more source

Nebulae as Gravitational Lenses [PDF]

open access: yesPhysical Review, 1937
Einstein recently published (1) some calculations concerning a suggestion made by R. W. Mandl, namely, that a star B may act as a "gravitational lens" for light coming from another star A which lies closely enough on the line of sight behind B. As Einstein remarks the chance to observe this effect for stars is extremely small.
openaire   +4 more sources

Macroscopic Phase‐Change Drug Carrier Ball with Photothermally Controlled Release and Magnetically Controlled Transport Properties

open access: yesAdvanced Materials Technologies, EarlyView.
Millimeter‐scale macroscopic phase‐change balls with on‐demand drug release triggered by photothermal stimulation and magnetically controllable transport properties are demonstrated. The proposed system can be easily fabricated using omniphobic surfaces and offers several advantages, including high visibility, controllable transport, easy drug loading,
Hyunji Lee   +5 more
wiley   +1 more source

Gravitational Lenses [PDF]

open access: yesSymposium - International Astronomical Union, 1988
The gravitational lensing phenomenon is a new observational tool in cosmology. It appears to occur reasonably frequently; several thousand examples probably are observable with current radio and optical telescopes. A dozen or so reasonable candidates have been proposed, but it has become clear that one must apply strong tests to distinguish between ...
openaire   +1 more source

Research Progress on Atmospheric Turbulence Perception and Correction Based on Adaptive Optics and Deep Learning

open access: yesAdvanced Photonics Research, EarlyView.
This work presents a systematic review of atmospheric turbulence fundamentals, including theoretical formulations and adaptive optics‐based mitigation strategies. This includes an in‐depth examination of the devices, theories, and methodologies associated with traditional correction approaches.
Qinghui Liu   +5 more
wiley   +1 more source

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