Results 161 to 170 of about 16,821,719 (299)

Enhancement of Circular Dichroism in Chiral Dielectric Metasurfaces by Ion Beam Irradiation

Advanced Optical Materials, EarlyView.
Ion beam irradiation enables post fabrication tuning of dissipative losses in chiral dielectric metasurfaces composed of C4 symmetric silicon nanostructures. By tailoring the absorption toward critical coupling condition, circular dichroism is enhanced from 0.70 to 0.85, demonstrating a versatile route for maximizing optical chirality and polarization ...
Anna Fitriana, Katsuya Tanaka, Lukas Raam Jaeger, Martin Hafermann, Thomas Pertsch, Carsten Ronning, Isabelle Staude   +6 more
wiley   +1 more source

GX 340+0: In and Out of Focus

The Astrophysical Journal
The Nuclear Spectroscopic Telescope Array (NuSTAR) enables detailed high-energy X-ray observations from 3–79 keV, but its performance can be constrained by telemetry saturation when observing bright sources, leading to reduced effective exposure times ...
S. Li, R. M. Ludlam, D. J. K. Buisson, M. Sudha, S. Rossland, G. Mastroserio, M. C. Brumback, J. A. García, B. W. Grefenstette, F. La Monaca, E. A. Saavedra, A. Di Marco   +11 more
doaj   +1 more source

TacScope: A Miniaturized Vision‐Based Tactile Sensor for Surgical Applications

Advanced Robotics Research, EarlyView.
TacScope is a compact, vision‐based tactile sensor designed for robot‐assisted surgery. By leveraging a curved elastomer surface with pressure‐sensitive particle redistribution, it captures high‐resolution 3D tactile feedback. TacScope enables accurate tumor detection and shape classification beneath soft tissue phantoms, offering a scalable, low‐cost ...
Md Rakibul Islam Prince, Sheeraz Athar, Pokuang Zhou, Yu She   +3 more
wiley   +1 more source

Binary Interaction Dominates the Evolution of Massive Stars

, 2012
peer reviewedThe presence of a nearby companion alters the evolution of massive stars in binary systems, leading to phenomena such as stellar mergers, x-ray binaries, and gamma-ray bursts. Unambiguous constraints on the fraction of massive stars affected
Sana, H., Gieles, M., Izzard, R. G., Izzard, R.G., Sana, Hugues, de Koter, Alex, de Mink, S. E., Evans, C.J., Le Bouquin, J-B., de Mink, S.E., Schneider, F.R.N., Evans, C. J., Le Bouquin, J.-B., Schneider, F. R. N., Gosset, E., de Koter, A., Langer, N., Schneider, F.RN., Gosset, Eric   +18 more
core   +1 more source

A Two-stage Kick Scenario for the Peculiar Low-mass X-Ray Binary GX 1+4

The Astrophysical Journal Letters
The low-mass X-ray binary (LMXB) GX 1+4 stands out with its unique properties. Despite being an old system, it hosts a strongly magnetized neutron star (NS), a trait usually linked to younger systems. Its exceptionally long orbital period (1160 days) and
Xiangyu Ivy Wang, Shi-Jie Gao, Xiang-Dong Li   +2 more
doaj   +1 more source

Spectral Comparisons of Neutron Star Low-Mass X-Ray Binaries with Black Hole X-Ray Binaries

, 2013
The study of high-resolution X-ray spectra of neutron star low-mass X-ray binaries (LMXBs) allows the investigation of the innermost parts of the accretion disk and immediate surroundings of the compact object. The weak magnetic eld of old neutron stars present in such systems allows the accretion disk to approach very close to the compact object, like
openaire   +1 more source

Spin evolution of neutron stars in transient low-mass X-ray binaries

Monthly Notices of the Royal Astronomical Society
ABSTRACT Millisecond pulsar + helium white dwarf (MSP + He WD) binaries are thought to have descended from neutron star low-mass X-ray binaries (NS LMXBs). The NSs accreted from the progenitors of the WDs and their spin periods were accordingly accelerated to the equilibrium periods of order milliseconds.
Cui, Zhe, Li, Xiang-Dong
openaire   +2 more sources

A Self‐Healing Permanent Magnet Putty for Soft Robot Skins With Force Sensing and Functional Recovery

Advanced Robotics Research, EarlyView.
Permanent magnet putty (PMP) integrates high‐coercivity NdFeB particles with a dynamic polyborosiloxane–Ecoflex matrix, achieving rapid self‐healing (90% mechanical recovery in 10 s) and magnetic recovery within 20 min. With twice the sensitivity of commercial putties, PMP enables precise 5–30 N force detection and discrimination between pressing and ...
Ruotong Zhao, Mitsuhiro Kamezaki, Ryosuke Dobashi, Yuhiro Iwamoto, Yasushi Ido, Yoshihiro Kawahara   +5 more
wiley   +1 more source

On the X-ray Emission of Massive Binary Stars [PDF]

This thesis is dedicated to the theoretical investigation of massive binary systems consisting of a normal star and a neutron star or black hole as a companion.
Quast, Martin
core   +1 more source

NuSTAR’s Intentional Stray Light Observation of Scorpius X-1

The Astrophysical Journal
We present the first spectral analysis of Scorpius X-1 (Sco X-1) using intentional stray light (SL) observations taken by NuSTAR. Unlike focused observations that have high telemetry load when observing bright sources, intentional SL observations can ...
S. Li, R. M. Ludlam, M. Sudha, M. C. Brumback, D. J. K. Buisson, B. M. Coughenour, A. Di Marco, B. W. Grefenstette, F. La Monaca, G. Mastroserio, S. Rossland   +10 more
doaj   +1 more source