Results 111 to 120 of about 72,602 (336)

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

Advanced Materials, EarlyView.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju, Roshan Velluvakandy, Xianghua Wu, Miguel Angel Merlos Rodrigo, Zbyněk Heger, Kamila Bendíčková, Jan Frič, Martin Pumera   +7 more
wiley   +1 more source

Origin and Radial Distribution of Faint Blue Horizontal-Branch Stars [PDF]

, 1988
C. D. Bailyn, J. E. Grindlay, H. N. Cohn, P. M. Lugger   +3 more
openalex   +1 more source

The massive hot subdwarf binary LAMOST J065816.72+094343.1

Astronomy & Astrophysics
Context. Massive short-period binaries involving hot subdwarf stars (sdO/Bs) are rare but very relevant to constraining pathways for binary star evolution.
Mattig F., Barlow B. N., Liu D., Dorsch M., Geier S., Pritzkuleit M., Dawson H., Wang B., Schaffenroth V., Kupfer T., Derbyshire C., Barocci-Faul S.   +11 more
doaj   +1 more source

Internal rotation of subdwarf B stars: limiting cases and asteroseismological consequences

, 2004
Observations of the rotation rates of horizontal branch (HB) stars show puzzling systematics. In particular, cooler HB stars often show rapid rotation (with velocities in excess of 10 km/s), while hotter HB stars typically show much smaller rotation ...
Heber U., Shelbi R. Hostler, Steven D. Kawaler, Stobie R. S., Zahn J.-P.   +4 more
core   +2 more sources

Perspective: OLED Displays Singing with the Blues

Advanced Materials, EarlyView.
While blue pixels consume approximately 50% of the energy of OLED display front planes, in the 25 years since their invention, 100% internal efficiency triplet‐controlled phosphorescent OLEDs have not met the stability standards necessary for their adoption.
Stephen R. Forrest, Claire Arneson, Haonan Zhao   +2 more
wiley   +1 more source

Helium-rich EHB Stars in Globular Clusters

, 2003
Recent UV observations of the most massive Galactic globular clusters show a significant population of hot stars below the zero-age HB (``blue hook'' stars), which cannot be explained by canonical stellar evolution.
Dreizler, S., Landsman, W. B., Moehler, S., Sweigart, A. V.   +3 more
core   +1 more source

Evolution of horizontal branch stars with extension

Astrophysics and Space Science, 1990
The details of the evolution of a low-mass horizontal branch star through the asymptotic giant phase with the assumption of first an extended atmosphere and second with extended and mass including atmosphere are given in comparison with the evolution of the same model without extension.
Laskarides, P.G., Nikolaidis, D.L.
openaire   +3 more sources

Atomically Resolved Acoustic Dynamics Coupled with Magnetic Order in a Van der Waals Antiferromagnet

Advanced Materials, EarlyView.
Magnetically coupled acoustic phonon modes (f1, f2, f3) are captured by ultrafast X‐ray diffraction in a prototypical van der Waals antiferromagnet FePS3, including their atomic displacement vectors (u) and the acoustic propagation wave vectors (k). Notably, the atomic displacement vector and amplitude of these modes, represented by the direction and ...
Faran Zhou, Kyle Hwangbo, Sung Soo Ha, Xiao‐Wei Zhang, Sae Hwan Chun, Jaeku Park, Intae Eom, Qianni Jiang, Zekai Yang, Marc Zajac, Sungwon Kim, Sungwook Choi, Zhaodong Chu, Kyoung Hun Oh, Yifan Su, Alfred Zong, Elton J. G. Santos, Ting Cao, Jiun‐Haw Chu, Stephan O. Hruszkewycz, Nuh Gedik, Di Xiao, Hyunjung Kim, Xiaodong Xu, Haidan Wen   +24 more
wiley   +1 more source

Overluminous Blue Horizontal‐Branch Stars Formed by Low‐Mass Companions [PDF]

, 2007
Noam Soker, Amos Harpaz
openalex   +1 more source

A small survey of UV-bright stars around the northern ecliptic pole: seeking new p-mode sdB variables for the TESS mission

Open Astronomy, 2019
Starting in 2019, the TESS mission will monitor the northern ecliptic pole for 1 year. Data will be collected at 30-minute and 2-minute cadences, and only a limited amount of slots will be reserved for targets requiring a 20- second cadence.
Prins Saskia, Telting John, Østensen Roy   +2 more
doaj   +1 more source