Results 101 to 110 of about 7,494 (265)

A Systematic Study of GelMA‐Carbopol Bioinks for High‐Fidelity Extrusion 3D Bioprinting at Physiological Temperatures

open access: yesAdvanced Healthcare Materials, EarlyView.
Gonzalez Martinez and collaborators develop a strategy to formulate high performance GelMA‐based bioinks with low solids contents. The resulting bioinks enable 3D bioprinting at 37 °C of high‐fidelity structures with tunable mechanical properties that support high cell viability and function.
David A. González‐Martínez   +8 more
wiley   +1 more source

Radial oscillations of neutral and charged hybrid stars

open access: yes, 2014
We construct stellar models of hadron stars and hybrid stars and calculate the frequencies of their lowest radial mode of vibration. Chandrasekhar's equation for radial oscillations is generalized for stars with internal electric fields and earlier ...
A. Brillante, I. N. Mishustin
core   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

On the Structure and Oscillations of the First Stars

open access: yes
Post-main sequence Population III stars (of the mass range M = 0.8 – 1  MSun) could inhabit dwarf galaxies and the halo of the Milky Way. However, they remain observationally elusive. Surface abundance anomalies induced by evolutionary mixing – particularly thermohaline diffusion and dredge-up events – can mimic the chemical signatures of second ...
Ferreira dos Santos, Thiago   +3 more
openaire   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

open access: yesAdvanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi   +4 more
wiley   +1 more source

Radial oscillations of relativistic stars

open access: yes, 2001
We present a new survey of the radial oscillation modes of neutron stars. This study complements and corrects earlier studies of radial oscillations.
K. D. Kokkotas, J. Ruoff
core   +1 more source

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

open access: yesAdvanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens   +8 more
wiley   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

open access: yesAdvanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo   +11 more
wiley   +1 more source

Rapid oscillations in cataclysmic variable stars

open access: yes, 2004
Includes bibliographical references (p. 129-146).Rapid quasi-coherent oscillations were detected in the optical light curves of 24 cataclysmic variable stars (CVS).
Pretorius, Magaretha L
core  

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