Results 181 to 190 of about 109,148 (343)

Perturbed precessing ellipses as the building blocks of spiral arms in a barred galaxy with two pattern speeds

, 2022
M. Harsoula, C. Efthymiopoulos, G. Contopoulos, A. C. Tzemos   +3 more
openalex   +1 more source

Microwave‐Assisted Aqueous Synthesis of Gelatin‐Norbornene for Hydrogel Crosslinking and Bioprinting

Advanced Materials Technologies, EarlyView.
A microwave‐assisted reaction is utilized to synthesize gelatin‐norbornene (GelNB), achieving a high degree of norbornene functionalization while reducing the macromer's upper critical solution temperature. The resulting GelNB macromer has high solubility at room temperature, facilitating light‐based 3‐dimensional (3D) printing of thiol‐norbornene ...
Jonathan B. Bryan, Chien‐Chi Lin
wiley   +1 more source

A Dynamic Galaxy: Stellar Age Patterns across the Disk of M101

The Astrophysical Journal
Using deep, narrowband imaging of the nearby spiral galaxy M101, we present stellar age information across the full extent of the disk of M101. Our narrowband filters measure age-sensitive absorption features such as the Balmer lines and the slope of the
Ray Garner III, J. Christopher Mihos, Paul Harding, Charles R. Garner Jr.   +3 more
doaj   +1 more source

Spiral Arms as Envelopes [PDF]

Monthly Notices of the Royal Astronomical Society, 1932
openaire   +1 more source

The shapes of spiral arms in the S⁴G survey and their connection with stellar bars [PDF]

, 2019
S. Diaz-Garcia, H. Salo, J. H. Knapen, M. Herrera-Endoqui   +3 more
openalex   +1 more source

Programmable Dimensional Lithography with Digital Micromirror Devices for Multifunctional Microarchitectures

Advanced Materials Technologies, EarlyView.
This review explores recent advances in digital micromirror device (DMD)‐based lithography, focusing on its programmable light modulation, multi‐material compatibility, and dimensional patterning strategies. It highlights innovations from optical system design to materials integration and multifunctional applications, positioning DMD lithography as a ...
Yubin Lee, Byungcheon Yoo, Chaeyeong Ryu, Jongwon Oh, Dahye Baek, Jiseok Lee   +5 more
wiley   +1 more source

Group Delay Dispersion Measurements on Mid‐Infrared Supermirrors

Advanced Optical Materials, EarlyView.
Group delay dispersion of novel semiconductor‐based optics is measured in the mid‐infrared spectral range (2.5 to 4.8 μm$\rm \umu{\rm m}$). Comparisons are made between simulations, measurements conducted with a home‐built white light interferometer, and measurements performed with a commercially available FTIR.
Ulrich Galander, Maximilian Prinz, Lukas W. Perner, Oliver H. Heckl   +3 more
wiley   +1 more source

Tomographic Imaging of the Sagittarius Spiral Arm's Magnetic Field Structure

The Astrophysical Journal
The Galactic global magnetic field is thought to play a vital role in shaping Galactic structures such as spiral arms and giant molecular clouds. However, our knowledge of magnetic field structures in the Galactic plane at different distances is limited,
Yasuo Doi, Kengo Nakamura, Koji S. Kawabata, Masafumi Matsumura, Hiroshi Akitaya, Simon Coudé, Claudia V. Rodrigues, Jungmi Kwon, Motohide Tamura, Mehrnoosh Tahani, Antonio Mario Magalhães, Reinaldo Santos-Lima, Yenifer Angarita, José Versteeg, Marijke Haverkorn, Tetsuo Hasegawa, Sarah Sadavoy, Doris Arzoumanian, Pierre Bastien   +18 more
doaj   +1 more source

Amplitude of Spiral Arms and Dark Matter [PDF]

, 2004
P. Grosbøl
openalex   +1 more source

Chiral Metasurfaces with Multidimensional Tunability for Optical Chiral States

Advanced Optical Materials, EarlyView.
A novel bilayer perovskite chiral metasurface enables tunable transitions between BIC‐associated vortex centres and circularly polarized states via rotational symmetry control. Breaking rotational symmetry and applying in situ rotation to the upper layer allows precise, omnidirectional tuning of C points in momentum space. This evolution forms a Möbius‐
Dayang Lin, Abbas Ghaffari, Qing Gu
wiley   +1 more source