Results 61 to 70 of about 3,566,597 (273)

On the Existence, Rareness, and Uniqueness of Quenched H i-rich Galaxies in the Local Universe

The Astrophysical Journal
Using data from ALFALFA, xGASS, H i -MaNGA, and the Sloan Digital Sky Survey (SDSS), we identify a sample of 47 “red but H i -rich” (RR) galaxies with near-UV (NUV) − r > 5 and unusually high H i -to-stellar mass ratios. We compare the optical properties
Xiao Li, Cheng Li, H. J. Mo, Jianhong Hu, Jing Wang, Ting Xiao   +5 more
doaj   +1 more source

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

Advanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri, Asif Abdullah Khan, Md Fahim Al Fattah, Mahmoud Almadhoun, Shamaila Shahzadi, Aixi Pan, Md Soyaeb Hasan, Henry Wu, Arash Aghigh, Bhawna Bhawna, François Légaré, Vivek Maheshwari, Dayan Ban   +12 more
wiley   +1 more source

Revisiting the Vertical Distribution of H i Absorbing Clouds in the Solar Neighborhood. II. Constraints from a Large Catalog of 21 cm Absorption Observations at High Galactic Latitudes

The Astrophysical Journal
The cold neutral medium (CNM) is where neutral atomic hydrogen (H i ) is converted into molecular clouds, so the structure and kinematics of the CNM are key drivers of galaxy evolution.
Daniel R. Rybarczyk, Trey V. Wenger, Snežana Stanimirović   +2 more
doaj   +1 more source

One H2 molecule per ten million H atoms reveals sub-parsec-scale cold overdensities at z ∼ 4★

Astronomy & Astrophysics
We present the detection and analysis of H2 absorption at z = 4.24 towards the bright quasar J 0007−5705, which was observed with the Very Large Telescope as part of the ESPRESSO QUasar Absorption Line Survey (EQUALS). The high resolving power of R ≈ 120 
Noterdaeme P., Balashev S., Berg T., Cristiani S., Cuellar R., Cupani G., Di Stefano S., D’Odorico V., Fian C., Godard B., López S., Milaković D., Trost A., Welsh L.   +13 more
doaj   +1 more source

An ellipsoidal mirror for focusing neutral atomic and molecular beams [PDF]

, 2010
Manipulation of atomic and molecular beams is essential to atom optics applications including atom lasers, atom lithography, atom interferometry and neutral atom microscopy.
Galas, J., Sondergard, E., Reisinger, T., Miranda, R., Fladischer, K., Farias, D., Ernst, W.E., Piatkowski, B., Mayrhofer, V., Surma, B., Miros, A., Holst, B., Reingruber, H., Allison, W., Sitarek, S., Allison,, W., Nieto, P., Ross, A.E., Barredo, D., MacLaren, D.A., Litwin, D., Ross A.E., Nieto P., Allison, William, Farías D., Reisinger T., Sitarek S., Barredo D., Miros A., Barredo, Daniel, Søndergård E., Fladischer K., Galas J., Surma B., Ernst W.E., Litwin D., Allison W., Piatkowski B., Miranda, Rodolfo, Nieto, Pablo, Hoist B., MacLaren D.A., Reingruber H., Farías, Daniel, MacLaren, Donald A., Mayrhofer V.   +45 more
core   +1 more source

3D‐Printed Gradient Shape‐Memory Strain Sensors With Rewritable Gauge Factors

Advanced Functional Materials, EarlyView.
A 3D‐printed shape‐memory strain sensor combines thermomechanical programming with gradient architectural design. Preset strain rewrites the gauge factor (GF), while the gradient geometry amplifies the response through strain redistribution. Reprogrammable sensitivity enables the same sensor to detect weak pulse signals and monitor large‐amplitude ...
Xuan Zhang, Wenjie Qiao, Kaixin Jiang, Sherry Chen, Hanyu Cui, Kirsten Dyer, Xuefeng Zhu, Ting Wang, Xuehua Zhang, Ben Bin Xu, Jie Kong   +10 more
wiley   +1 more source

Joint Analysis of H I Absorption Zeeman Measurements and the Morphology of Filamentary H I Emission

The Astrophysical Journal
We present a joint analysis of H I absorption Zeeman measurements and the morphology of filamentary H I emission to investigate the 3D structure of the magnetic field in the diffuse neutral interstellar medium.
Marta Nowotka, Susan E. Clark, Blakesley Burkhart, Laura Fissel, Tao-Chung Ching, Timothy Robishaw, Carl Heiles   +6 more
doaj   +1 more source

Infrared spectroscopy of cyanonaphthalenes under interstellar relevant conditions and their potential connection with astronomical aromatic infrared bands

Astronomy & Astrophysics
Context. Aromatic infrared bands (AIBs) are widely observed in diverse astrophysical environments and are generally attributed to vibrational emission from polycyclic aromatic hydrocarbons (PAHs).
Xin Jiaqi, Xu Jianzhi, Ferrari Piero, Hou Gao-Lei   +3 more
doaj   +1 more source

Microfluidic Nano‐Assembly of Red‐Blood‐Cell (RBC) Lipids and Components for Engineering Extracellular Vesicles

Advanced Healthcare Materials, EarlyView.
Engineered red blood cell‐derived extracellular vesicles (eRBCEVs) are synthesized via controlled microfluidic assembly from native RBC lipids, enabling tunable encapsulation of proteins, nucleic acids, nanoparticles, and viral vectors. The platform demonstrates reproducible nanoscale architecture, preserved membrane composition, and functional cargo ...
Chiranth K. Nagaraj, Xilal Y. Rima, Kim T. Nguyen, Courtney Culkins, Nana Boateng, Jacob Doon‐Ralls, Alejandro Bresolin, Xin Huang, Hong Li, Vahedi Amid, Ajeet Pal Singh, Dharti Shantaram, Anastasiia Amari, Mangesh D. Hade, Nicholas R. Merriam, Zachary D. Schultz, Scott Q. Harper, Nizar Y. Saad, Setty M. Magaña, Willa A. Hsueh, Rachel E. Kopec, Blaise R. Kimmel, Andre F. Palmer, Eduardo Reátegui   +23 more
wiley   +1 more source

CO-dark Molecular Gas Traced by HCO+ in the Diffuse Interstellar Medium

The Astrophysical Journal
A classic problem in the study of the interstellar medium (ISM) is the near-invisibility of molecular hydrogen (H _2 ) in cold environments. Observations of CO emission are typically used to indirectly trace H _2 , but a significant fraction of H _2 in ...
Daniel R. Rybarczyk, Michael P. Busch, J. R. Dawson, Min-Young Lee, Gan Luo   +4 more
doaj   +1 more source